home *** CD-ROM | disk | FTP | other *** search
| MacBinary | 1993-01-05 | 1.5 MB | [ONLN/HLX2] |
open in: 
MacOS 8.1
|
Win98
|
DOS
browse contents |
view JSON data
|
view as text
This file was processed as: MacBinary
(archive/macBinary).
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 10%
| dexvert
| MacBinary (archive/macBinary)
| fallback
| Supported |
| 100%
| file
| MacBinary II, inited, Tue Dec 22 10:51:26 1992, modified Tue Jan 5 09:59:13 1993, creator 'HLX2', type 'ONLN', 1503157 bytes "TN-Hardware" , at 0x16f035 43289 bytes resource
| default (weak)
| |
| 99%
| file
| data
| default
| |
| 100%
| TrID
| MacBinary 2
| default (weak)
| |
| 100%
| siegfried
| fmt/1762 MacBinary (II)
| default
| |
| 100%
| lsar
| MacBinary
| default
|
|
| id metadata |
|---|
| key | value |
|---|
| macFileType | [ONLN] |
| macFileCreator | [HLX2] |
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 00 0b 54 4e 2d 48 61 72 | 64 77 61 72 65 00 00 00 |..TN-Har|dware...|
|00000010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000040| 00 4f 4e 4c 4e 48 4c 58 | 32 01 00 00 00 00 00 00 |.ONLNHLX|2.......|
|00000050| 00 00 00 00 16 ef b5 00 | 00 a9 19 a7 5c e9 fe a7 |........|....\...|
|00000060| 6f 52 c1 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |oR......|........|
|00000070| 00 00 00 00 00 00 00 00 | 00 00 81 81 00 29 00 00 |........|.....)..|
|00000080| 4d 61 63 69 6e 74 6f 73 | 68 20 32 31 22 20 43 6f |Macintos|h 21" Co|
|00000090| 6c 6f 72 20 44 69 73 70 | 6c 61 79 20 54 65 63 68 |lor Disp|lay Tech|
|000000a0| 6e 69 63 61 6c 20 53 70 | 65 63 69 66 69 63 61 74 |nical Sp|ecificat|
|000000b0| 69 6f 6e 73 0d 48 61 72 | 64 77 61 72 65 09 4d 2e |ions.Har|dware.M.|
|000000c0| 48 57 2e 32 31 72 67 62 | 53 70 65 63 0d 57 72 69 |HW.21rgb|Spec.Wri|
|000000d0| 74 74 65 6e 20 62 79 3a | 09 47 75 69 6c 6c 65 72 |tten by:|.Guiller|
|000000e0| 6d 6f 20 41 2e 20 4f 72 | 74 69 7a 09 4f 63 74 6f |mo A. Or|tiz.Octo|
|000000f0| 62 65 72 20 31 39 39 32 | 0d 54 68 69 73 20 54 65 |ber 1992|.This Te|
|00000100| 63 68 6e 69 63 61 6c 20 | 4e 6f 74 65 20 70 72 65 |chnical |Note pre|
|00000110| 73 65 6e 74 73 20 74 68 | 65 20 74 65 63 68 6e 69 |sents th|e techni|
|00000120| 63 61 6c 20 73 70 65 63 | 69 66 69 63 61 74 69 6f |cal spec|ificatio|
|00000130| 6e 73 20 66 6f 72 20 74 | 68 65 20 4d 61 63 69 6e |ns for t|he Macin|
|00000140| 74 6f 73 68 20 32 31 22 | 20 43 6f 6c 6f 72 20 44 |tosh 21"| Color D|
|00000150| 69 73 70 6c 61 79 20 77 | 69 74 68 20 74 68 65 20 |isplay w|ith the |
|00000160| 6f 62 6a 65 63 74 69 76 | 65 20 6f 66 20 61 6c 6c |objectiv|e of all|
|00000170| 6f 77 69 6e 67 20 64 69 | 73 70 6c 61 79 20 62 6f |owing di|splay bo|
|00000180| 61 72 64 20 61 6e 64 20 | 61 63 63 65 6c 65 72 61 |ard and |accelera|
|00000190| 74 6f 72 20 62 6f 61 72 | 64 20 6d 61 6e 75 66 61 |tor boar|d manufa|
|000001a0| 63 74 75 72 65 72 73 20 | 74 6f 20 65 6e 73 75 72 |cturers |to ensur|
|000001b0| 65 20 63 6f 6d 70 61 74 | 69 62 69 6c 69 74 79 20 |e compat|ibility |
|000001c0| 77 69 74 68 20 74 68 69 | 73 20 6d 6f 6e 69 74 6f |with thi|s monito|
|000001d0| 72 2e 0d 49 6e 70 75 74 | 20 43 6f 6e 6e 65 63 74 |r..Input| Connect|
|000001e0| 6f 72 0d 54 68 65 20 76 | 69 64 65 6f 20 61 6e 64 |or.The v|ideo and|
|000001f0| 20 73 79 6e 63 68 72 6f | 6e 69 7a 61 74 69 6f 6e | synchro|nization|
|00000200| 20 69 6e 70 75 74 20 73 | 69 67 6e 61 6c 73 20 61 | input s|ignals a|
|00000210| 72 65 20 73 75 70 70 6c | 69 65 64 20 76 69 61 20 |re suppl|ied via |
|00000220| 61 20 44 20 73 65 72 69 | 65 73 20 73 69 7a 65 2d |a D seri|es size-|
|00000230| 33 20 73 68 65 6c 6c 20 | 77 69 74 68 20 74 68 72 |3 shell |with thr|
|00000240| 65 65 20 69 6e 74 65 72 | 6e 61 6c 20 63 6f 61 78 |ee inter|nal coax|
|00000250| 69 61 6c 20 63 6f 6e 6e | 65 63 74 6f 72 73 2e 20 |ial conn|ectors. |
|00000260| 54 68 65 20 63 6f 6e 6e | 65 63 74 6f 72 20 61 74 |The conn|ector at|
|00000270| 20 74 68 65 20 6d 6f 6e | 69 74 6f 72 20 68 61 73 | the mon|itor has|
|00000280| 20 74 65 6e 20 73 6f 63 | 6b 65 74 20 63 6f 6e 74 | ten soc|ket cont|
|00000290| 61 63 74 73 20 61 6e 64 | 20 74 68 72 65 65 20 63 |acts and| three c|
|000002a0| 6f 61 78 69 61 6c 20 72 | 65 63 65 70 74 61 63 6c |oaxial r|eceptacl|
|000002b0| 65 73 20 28 6d 61 6c 65 | 20 63 65 6e 74 65 72 20 |es (male| center |
|000002c0| 70 69 6e 29 2c 20 61 73 | 20 73 68 6f 77 6e 2e 20 |pin), as| shown. |
|000002d0| 54 68 65 20 73 68 65 6c | 6c 20 69 73 20 44 61 72 |The shel|l is Dar|
|000002e0| 74 65 63 68 20 74 79 70 | 65 20 46 4d 2d 31 33 57 |tech typ|e FM-13W|
|000002f0| 33 53 20 6f 72 20 65 71 | 75 69 76 61 6c 65 6e 74 |3S or eq|uivalent|
|00000300| 2e 20 54 68 65 20 63 6f | 61 78 69 61 6c 20 72 65 |. The co|axial re|
|00000310| 63 65 70 74 61 63 6c 65 | 73 20 61 72 65 20 44 61 |ceptacle|s are Da|
|00000320| 72 74 65 63 68 20 74 79 | 70 65 20 46 4d 45 31 53 |rtech ty|pe FME1S|
|00000330| 20 6f 72 20 65 71 75 69 | 76 61 6c 65 6e 74 2e 0d | or equi|valent..|
|00000340| 54 68 65 20 63 65 6e 74 | 65 72 20 63 6f 6e 64 75 |The cent|er condu|
|00000350| 63 74 6f 72 20 6f 66 20 | 41 33 20 69 73 20 72 65 |ctor of |A3 is re|
|00000360| 64 20 76 69 64 65 6f 20 | 61 6e 64 20 74 68 65 20 |d video |and the |
|00000370| 6f 75 74 65 72 20 63 6f | 6e 64 75 63 74 6f 72 20 |outer co|nductor |
|00000380| 69 73 20 72 65 64 20 76 | 69 64 65 6f 20 72 65 74 |is red v|ideo ret|
|00000390| 75 72 6e 2e 20 54 68 65 | 20 63 65 6e 74 65 72 20 |urn. The| center |
|000003a0| 63 6f 6e 64 75 63 74 6f | 72 20 6f 66 20 41 32 20 |conducto|r of A2 |
|000003b0| 69 73 20 67 72 65 65 6e | 20 76 69 64 65 6f 20 61 |is green| video a|
|000003c0| 6e 64 20 74 68 65 20 6f | 75 74 65 72 20 63 6f 6e |nd the o|uter con|
|000003d0| 64 75 63 74 6f 72 20 69 | 73 20 67 72 65 65 6e 20 |ductor i|s green |
|000003e0| 76 69 64 65 6f 20 72 65 | 74 75 72 6e 2e 20 54 68 |video re|turn. Th|
|000003f0| 65 20 63 65 6e 74 65 72 | 20 63 6f 6e 64 75 63 74 |e center| conduct|
|00000400| 6f 72 20 6f 66 20 41 31 | 20 69 73 20 62 6c 75 65 |or of A1| is blue|
|00000410| 20 76 69 64 65 6f 20 61 | 6e 64 20 74 68 65 20 6f | video a|nd the o|
|00000420| 75 74 65 72 20 63 6f 6e | 64 75 63 74 6f 72 20 69 |uter con|ductor i|
|00000430| 73 20 62 6c 75 65 20 76 | 69 64 65 6f 20 72 65 74 |s blue v|ideo ret|
|00000440| 75 72 6e 2e 20 0d 53 65 | 6e 73 65 20 30 2c 20 53 |urn. .Se|nse 0, S|
|00000450| 65 6e 73 65 20 31 2c 20 | 61 6e 64 20 53 65 6e 73 |ense 1, |and Sens|
|00000460| 65 20 32 20 28 70 69 6e | 73 20 39 2c 20 38 2c 20 |e 2 (pin|s 9, 8, |
|00000470| 61 6e 64 20 33 29 20 77 | 69 6c 6c 20 62 65 20 73 |and 3) w|ill be s|
|00000480| 68 6f 72 74 65 64 20 74 | 6f 20 53 65 6e 73 65 20 |horted t|o Sense |
|00000490| 67 72 6f 75 6e 64 20 28 | 70 69 6e 20 34 29 20 69 |ground (|pin 4) i|
|000004a0| 6e 20 74 68 65 20 6d 6f | 6e 69 74 6f 72 2c 20 70 |n the mo|nitor, p|
|000004b0| 72 6f 64 75 63 69 6e 67 | 20 74 68 65 20 73 65 6e |roducing| the sen|
|000004c0| 73 65 20 6c 69 6e 65 20 | 63 6f 64 65 20 30 30 30 |se line |code 000|
|000004d0| 2e 20 0d 54 68 65 20 66 | 6f 6c 6c 6f 77 69 6e 67 |. .The f|ollowing|
|000004e0| 20 6c 69 6e 65 73 20 77 | 69 6c 6c 20 62 65 20 63 | lines w|ill be c|
|000004f0| 6f 6e 6e 65 63 74 65 64 | 20 74 6f 67 65 74 68 65 |onnected| togethe|
|00000500| 72 20 74 68 72 6f 75 67 | 68 20 6c 6f 77 20 69 6d |r throug|h low im|
|00000510| 70 65 64 61 6e 63 65 73 | 20 61 74 20 74 68 65 20 |pedances| at the |
|00000520| 43 50 55 20 73 69 64 65 | 3a 20 53 65 6e 73 65 20 |CPU side|: Sense |
|00000530| 67 72 6f 75 6e 64 2c 20 | 53 68 65 6c 6c 20 67 72 |ground, |Shell gr|
|00000540| 6f 75 6e 64 2c 20 74 68 | 65 20 6f 75 74 65 72 20 |ound, th|e outer |
|00000550| 63 6f 6e 64 75 63 74 6f | 72 73 20 6f 66 20 41 31 |conducto|rs of A1|
|00000560| 2c 20 41 32 2c 20 61 6e | 64 20 41 33 2c 20 61 6e |, A2, an|d A3, an|
|00000570| 64 20 74 68 65 20 72 65 | 74 75 72 6e 73 20 6f 66 |d the re|turns of|
|00000580| 20 48 73 79 6e 63 2c 20 | 56 73 79 6e 63 2c 20 61 | Hsync, |Vsync, a|
|00000590| 6e 64 20 43 73 79 6e 63 | 2e 0d 49 6e 70 75 74 20 |nd Csync|..Input |
|000005a0| 53 69 67 6e 61 6c 20 54 | 69 6d 69 6e 67 3a 0d 46 |Signal T|iming:.F|
|000005b0| 75 72 74 68 65 72 20 52 | 65 66 65 72 65 6e 63 65 |urther R|eference|
|000005c0| 3a 0d a5 09 4d 61 63 69 | 6e 74 6f 73 68 20 32 31 |:...Maci|ntosh 21|
|000005d0| 22 20 43 6f 6c 6f 72 20 | 44 69 73 70 6c 61 79 20 |" Color |Display |
|000005e0| 4f 77 6e 65 72 27 73 20 | 47 75 69 64 65 0d a5 20 |Owner's |Guide.. |
|000005f0| 09 44 65 73 69 67 6e 69 | 6e 67 20 43 61 72 64 73 |.Designi|ng Cards|
|00000600| 20 61 6e 64 20 44 72 69 | 76 65 72 73 20 66 6f 72 | and Dri|vers for|
|00000610| 20 74 68 65 20 4d 61 63 | 69 6e 74 6f 73 68 20 46 | the Mac|intosh F|
|00000620| 61 6d 69 6c 79 2c 20 54 | 68 69 72 64 20 45 64 69 |amily, T|hird Edi|
|00000630| 74 69 6f 6e 0d 41 70 70 | 6c 65 20 44 65 73 6b 74 |tion.App|le Deskt|
|00000640| 6f 70 20 42 75 73 20 51 | 26 41 73 0d 48 61 72 64 |op Bus Q|&As.Hard|
|00000650| 77 61 72 65 09 4d 2e 48 | 57 2e 41 44 42 2e 51 26 |ware.M.H|W.ADB.Q&|
|00000660| 41 73 0d 52 65 76 69 73 | 65 64 20 62 79 3a 09 44 |As.Revis|ed by:.D|
|00000670| 65 76 65 6c 6f 70 65 72 | 20 53 75 70 70 6f 72 74 |eveloper| Support|
|00000680| 20 43 65 6e 74 65 72 09 | 4f 63 74 6f 62 65 72 20 | Center.|October |
|00000690| 31 39 39 32 0d 57 72 69 | 74 74 65 6e 20 62 79 3a |1992.Wri|tten by:|
|000006a0| 09 44 65 76 65 6c 6f 70 | 65 72 20 53 75 70 70 6f |.Develop|er Suppo|
|000006b0| 72 74 20 43 65 6e 74 65 | 72 09 4f 63 74 6f 62 65 |rt Cente|r.Octobe|
|000006c0| 72 20 31 39 39 30 0d 54 | 68 69 73 20 54 65 63 68 |r 1990.T|his Tech|
|000006d0| 6e 69 63 61 6c 20 4e 6f | 74 65 20 63 6f 6e 74 61 |nical No|te conta|
|000006e0| 69 6e 73 20 61 20 63 6f | 6c 6c 65 63 74 69 6f 6e |ins a co|llection|
|000006f0| 20 6f 66 20 51 26 41 73 | 20 72 65 6c 61 74 69 6e | of Q&As| relatin|
|00000700| 67 20 74 6f 20 61 20 73 | 70 65 63 69 66 69 63 20 |g to a s|pecific |
|00000710| 74 6f 70 69 63 d1 71 75 | 65 73 74 69 6f 6e 73 20 |topic.qu|estions |
|00000720| 79 6f 75 d5 76 65 20 73 | 65 6e 74 20 74 68 65 20 |you.ve s|ent the |
|00000730| 44 65 76 65 6c 6f 70 65 | 72 20 53 75 70 70 6f 72 |Develope|r Suppor|
|00000740| 74 20 43 65 6e 74 65 72 | 20 28 44 53 43 29 20 61 |t Center| (DSC) a|
|00000750| 6c 6f 6e 67 20 77 69 74 | 68 20 61 6e 73 77 65 72 |long wit|h answer|
|00000760| 73 20 66 72 6f 6d 20 74 | 68 65 20 44 53 43 20 65 |s from t|he DSC e|
|00000770| 6e 67 69 6e 65 65 72 73 | 2e 20 57 68 69 6c 65 20 |ngineers|. While |
|00000780| 44 53 43 20 65 6e 67 69 | 6e 65 65 72 73 20 68 61 |DSC engi|neers ha|
|00000790| 76 65 20 63 68 65 63 6b | 65 64 20 74 68 65 20 51 |ve check|ed the Q|
|000007a0| 26 41 20 63 6f 6e 74 65 | 6e 74 20 66 6f 72 20 61 |&A conte|nt for a|
|000007b0| 63 63 75 72 61 63 79 2c | 20 74 68 65 20 51 26 41 |ccuracy,| the Q&A|
|000007c0| 20 54 65 63 68 6e 69 63 | 61 6c 20 4e 6f 74 65 73 | Technic|al Notes|
|000007d0| 20 64 6f 6e d5 74 20 68 | 61 76 65 20 74 68 65 20 | don.t h|ave the |
|000007e0| 65 64 69 74 69 6e 67 20 | 61 6e 64 20 6f 72 67 61 |editing |and orga|
|000007f0| 6e 69 7a 61 74 69 6f 6e | 20 6f 66 20 6f 74 68 65 |nization| of othe|
|00000800| 72 20 54 65 63 68 6e 69 | 63 61 6c 20 4e 6f 74 65 |r Techni|cal Note|
|00000810| 73 2e 20 54 68 65 20 51 | 26 41 20 66 75 6e 63 74 |s. The Q|&A funct|
|00000820| 69 6f 6e 20 69 73 20 74 | 6f 20 67 65 74 20 6e 65 |ion is t|o get ne|
|00000830| 77 20 74 65 63 68 6e 69 | 63 61 6c 20 69 6e 66 6f |w techni|cal info|
|00000840| 72 6d 61 74 69 6f 6e 20 | 61 6e 64 20 75 70 64 61 |rmation |and upda|
|00000850| 74 65 73 20 74 6f 20 79 | 6f 75 20 71 75 69 63 6b |tes to y|ou quick|
|00000860| 6c 79 2c 20 73 61 76 69 | 6e 67 20 74 68 65 20 70 |ly, savi|ng the p|
|00000870| 6f 6c 69 73 68 20 66 6f | 72 20 77 68 65 6e 20 74 |olish fo|r when t|
|00000880| 68 65 20 69 6e 66 6f 72 | 6d 61 74 69 6f 6e 20 6d |he infor|mation m|
|00000890| 69 67 72 61 74 65 73 20 | 69 6e 74 6f 20 72 65 66 |igrates |into ref|
|000008a0| 65 72 65 6e 63 65 20 6d | 61 6e 75 61 6c 73 2e 0d |erence m|anuals..|
|000008b0| 51 26 41 73 20 61 72 65 | 20 6e 6f 77 20 69 6e 63 |Q&As are| now inc|
|000008c0| 6c 75 64 65 64 20 77 69 | 74 68 20 54 65 63 68 6e |luded wi|th Techn|
|000008d0| 69 63 61 6c 20 4e 6f 74 | 65 73 20 74 6f 20 6d 61 |ical Not|es to ma|
|000008e0| 6b 65 20 61 63 63 65 73 | 73 20 74 6f 20 74 65 63 |ke acces|s to tec|
|000008f0| 68 6e 69 63 61 6c 20 75 | 70 64 61 74 65 73 20 65 |hnical u|pdates e|
|00000900| 61 73 69 65 72 20 66 6f | 72 20 79 6f 75 2e 20 49 |asier fo|r you. I|
|00000910| 66 20 79 6f 75 20 68 61 | 76 65 20 63 6f 6d 6d 65 |f you ha|ve comme|
|00000920| 6e 74 73 20 6f 72 20 73 | 75 67 67 65 73 74 69 6f |nts or s|uggestio|
|00000930| 6e 73 20 61 62 6f 75 74 | 20 51 26 41 20 63 6f 6e |ns about| Q&A con|
|00000940| 74 65 6e 74 20 6f 72 20 | 64 69 73 74 72 69 62 75 |tent or |distribu|
|00000950| 74 69 6f 6e 2c 20 70 6c | 65 61 73 65 20 6c 65 74 |tion, pl|ease let|
|00000960| 20 75 73 20 6b 6e 6f 77 | 20 62 79 20 73 65 6e 64 | us know| by send|
|00000970| 69 6e 67 20 61 6e 20 41 | 70 70 6c 65 4c 69 6e 6b |ing an A|ppleLink|
|00000980| 20 74 6f 20 44 45 56 46 | 45 45 44 42 41 43 4b 2e | to DEVF|EEDBACK.|
|00000990| 20 41 70 70 6c 65 20 50 | 61 72 74 6e 65 72 73 20 | Apple P|artners |
|000009a0| 6d 61 79 20 73 65 6e 64 | 20 74 65 63 68 6e 69 63 |may send| technic|
|000009b0| 61 6c 20 71 75 65 73 74 | 69 6f 6e 73 20 61 62 6f |al quest|ions abo|
|000009c0| 75 74 20 51 26 41 20 63 | 6f 6e 74 65 6e 74 20 74 |ut Q&A c|ontent t|
|000009d0| 6f 20 44 45 56 53 55 50 | 50 4f 52 54 20 66 6f 72 |o DEVSUP|PORT for|
|000009e0| 20 72 65 73 6f 6c 75 74 | 69 6f 6e 2e 0d 4e 65 77 | resolut|ion..New|
|000009f0| 20 51 26 41 73 20 61 6e | 64 20 51 26 41 73 20 72 | Q&As an|d Q&As r|
|00000a00| 65 76 69 73 65 64 20 74 | 68 69 73 20 6d 6f 6e 74 |evised t|his mont|
|00000a10| 68 20 61 72 65 20 6d 61 | 72 6b 65 64 20 77 69 74 |h are ma|rked wit|
|00000a20| 68 20 61 20 62 61 72 20 | 69 6e 20 74 68 65 20 73 |h a bar |in the s|
|00000a30| 69 64 65 20 6d 61 72 67 | 69 6e 2e 0d d2 48 6f 77 |ide marg|in...How|
|00000a40| 20 74 6f 20 41 44 42 d3 | 20 41 70 70 6c 65 20 44 | to ADB.| Apple D|
|00000a50| 65 73 6b 74 6f 70 20 42 | 75 73 20 72 65 66 65 72 |esktop B|us refer|
|00000a60| 65 6e 63 65 73 0d 57 72 | 69 74 74 65 6e 3a 09 31 |ences.Wr|itten:.1|
|00000a70| 31 2f 31 34 2f 39 30 0d | 4c 61 73 74 20 72 65 76 |1/14/90.|Last rev|
|00000a80| 69 65 77 65 64 3a 09 31 | 32 2f 31 39 2f 39 30 0d |iewed:.1|2/19/90.|
|00000a90| 49 20 75 6e 64 65 72 73 | 74 61 6e 64 20 74 68 61 |I unders|tand tha|
|00000aa0| 74 20 64 6f 69 6e 67 20 | 41 70 70 6c 65 20 44 65 |t doing |Apple De|
|00000ab0| 73 6b 74 6f 70 20 42 75 | 73 20 28 41 44 42 29 20 |sktop Bu|s (ADB) |
|00000ac0| 64 65 76 65 6c 6f 70 6d | 65 6e 74 20 66 6f 72 20 |developm|ent for |
|00000ad0| 6d 69 63 65 20 28 6f 72 | 20 69 73 20 69 74 20 6d |mice (or| is it m|
|00000ae0| 6f 75 73 65 73 29 20 63 | 61 6e 20 62 65 20 64 69 |ouses) c|an be di|
|00000af0| 66 66 69 63 75 6c 74 2e | 20 41 72 65 20 74 68 65 |fficult.| Are the|
|00000b00| 72 65 20 6d 61 6e 79 20 | 75 6e 64 6f 63 75 6d 65 |re many |undocume|
|00000b10| 6e 74 65 64 20 74 65 63 | 68 6e 69 63 61 6c 20 69 |nted tec|hnical i|
|00000b20| 73 73 75 65 73 20 77 68 | 69 63 68 20 49 20 6e 65 |ssues wh|ich I ne|
|00000b30| 65 64 20 74 6f 20 62 65 | 20 61 77 61 72 65 20 6f |ed to be| aware o|
|00000b40| 66 20 69 6e 20 6f 72 64 | 65 72 20 74 6f 20 65 66 |f in ord|er to ef|
|00000b50| 66 65 63 74 69 76 65 6c | 79 20 63 6f 6d 6d 75 6e |fectivel|y commun|
|00000b60| 69 63 61 74 65 20 77 69 | 74 68 20 74 68 65 20 41 |icate wi|th the A|
|00000b70| 44 42 20 62 75 73 3f 0d | 5f 5f 5f 0d 59 6f 75 20 |DB bus?.|___.You |
|00000b80| 73 68 6f 75 6c 64 20 68 | 61 76 65 20 74 68 65 20 |should h|ave the |
|00000b90| 66 6f 6c 6c 6f 77 69 6e | 67 20 62 69 74 73 20 6f |followin|g bits o|
|00000ba0| d5 20 69 6e 66 6f 3a 0d | a5 20 49 6e 73 69 64 65 |. info:.|. Inside|
|00000bb0| 20 4d 61 63 69 6e 74 6f | 73 68 2c 20 56 6f 6c 75 | Macinto|sh, Volu|
|00000bc0| 6d 65 20 56 2c 20 43 68 | 61 70 74 65 72 20 32 30 |me V, Ch|apter 20|
|00000bd0| 2c 20 d2 41 70 70 6c 65 | 20 44 65 73 6b 74 6f 70 |, .Apple| Desktop|
|00000be0| 20 42 75 73 d3 0d a5 20 | 4d 61 63 69 6e 74 6f 73 | Bus... |Macintos|
|00000bf0| 68 20 54 65 63 68 6e 69 | 63 61 6c 20 4e 6f 74 65 |h Techni|cal Note|
|00000c00| 20 d2 53 70 61 63 65 20 | 41 6c 69 65 6e 73 20 41 | .Space |Aliens A|
|00000c10| 74 65 20 4d 79 20 4d 6f | 75 73 65 20 28 41 44 42 |te My Mo|use (ADB|
|00000c20| d1 54 68 65 20 55 6e 74 | 6f 6c 64 20 53 74 6f 72 |.The Unt|old Stor|
|00000c30| 79 29 d3 0d a5 20 4d 61 | 63 69 6e 74 6f 73 68 20 |y)... Ma|cintosh |
|00000c40| 54 65 63 68 6e 69 63 61 | 6c 20 4e 6f 74 65 20 d2 |Technica|l Note .|
|00000c50| 41 62 73 6f 6c 75 74 65 | 20 50 6f 69 6e 74 69 6e |Absolute| Pointin|
|00000c60| 67 20 44 65 76 69 63 65 | 20 4d 65 6d 6f 72 79 20 |g Device| Memory |
|00000c70| 53 74 72 75 63 74 75 72 | 65 d3 0d a5 20 4d 61 63 |Structur|e... Mac|
|00000c80| 69 6e 74 6f 73 68 20 54 | 65 63 68 6e 69 63 61 6c |intosh T|echnical|
|00000c90| 20 4e 6f 74 65 20 d2 4b | 65 79 20 4d 61 70 70 69 | Note .K|ey Mappi|
|00000ca0| 6e 67 d3 0d a5 20 41 70 | 70 6c 65 20 44 65 73 6b |ng... Ap|ple Desk|
|00000cb0| 74 6f 70 20 42 75 73 20 | 73 70 65 63 69 66 69 63 |top Bus |specific|
|00000cc0| 61 74 69 6f 6e 73 20 70 | 61 63 6b 61 67 65 2e 20 |ations p|ackage. |
|00000cd0| 54 68 69 73 20 69 73 20 | 61 20 70 61 63 6b 61 67 |This is |a packag|
|00000ce0| 65 20 6f 66 20 6f 66 66 | 69 63 69 61 6c 20 41 70 |e of off|icial Ap|
|00000cf0| 70 6c 65 20 53 70 65 63 | 69 66 69 63 61 74 69 6f |ple Spec|ificatio|
|00000d00| 6e 73 20 63 6f 76 65 72 | 69 6e 67 20 74 68 65 20 |ns cover|ing the |
|00000d10| 41 44 42 20 70 72 6f 74 | 6f 63 6f 6c 2c 20 61 6e |ADB prot|ocol, an|
|00000d20| 64 20 41 70 70 6c 65 2d | 6d 61 6e 75 66 61 63 74 |d Apple-|manufact|
|00000d30| 75 72 65 64 20 41 44 42 | 20 44 65 76 69 63 65 73 |ured ADB| Devices|
|00000d40| 2e 20 54 68 69 73 20 69 | 73 20 61 76 61 69 6c 61 |. This i|s availa|
|00000d50| 62 6c 65 20 66 72 6f 6d | 20 41 70 70 6c 65 d5 73 |ble from| Apple.s|
|00000d60| 20 73 6f 66 74 77 61 72 | 65 20 6c 69 63 65 6e 73 | softwar|e licens|
|00000d70| 69 6e 67 20 64 65 70 61 | 72 74 6d 65 6e 74 20 75 |ing depa|rtment u|
|00000d80| 70 6f 6e 20 65 78 65 63 | 75 74 69 6f 6e 20 6f 66 |pon exec|ution of|
|00000d90| 20 61 6e 20 41 44 42 20 | 4c 69 63 65 6e 73 65 20 | an ADB |License |
|00000da0| 41 67 72 65 65 6d 65 6e | 74 2e 20 43 6f 6e 74 61 |Agreemen|t. Conta|
|00000db0| 63 74 20 74 68 65 20 6c | 69 63 65 6e 73 69 6e 67 |ct the l|icensing|
|00000dc0| 20 64 65 70 61 72 74 6d | 65 6e 74 20 61 74 3a 0d | departm|ent at:.|
|00000dd0| 41 70 70 6c 65 20 53 6f | 66 74 77 61 72 65 20 4c |Apple So|ftware L|
|00000de0| 69 63 65 6e 73 69 6e 67 | 0d 41 70 70 6c 65 20 43 |icensing|.Apple C|
|00000df0| 6f 6d 70 75 74 65 72 2c | 20 49 6e 63 2e 2c 0d 32 |omputer,| Inc.,.2|
|00000e00| 30 35 32 35 20 4d 61 72 | 69 61 6e 69 20 41 76 65 |0525 Mar|iani Ave|
|00000e10| 6e 75 65 2c 20 4d 2f 53 | 20 33 38 2d 49 0d 43 75 |nue, M/S| 38-I.Cu|
|00000e20| 70 65 72 74 69 6e 6f 2c | 20 43 41 2c 20 39 35 30 |pertino,| CA, 950|
|00000e30| 31 34 0d 28 34 30 38 29 | 20 39 37 34 2d 34 36 36 |14.(408)| 974-466|
|00000e40| 37 0d 41 70 70 6c 65 4c | 69 6e 6b 3a 20 53 57 2e |7.AppleL|ink: SW.|
|00000e50| 4c 49 43 45 4e 53 45 0d | 41 64 64 69 74 69 6f 6e |LICENSE.|Addition|
|00000e60| 61 6c 20 41 44 42 20 72 | 65 66 65 72 65 6e 63 65 |al ADB r|eference|
|00000e70| 73 3a 0d 49 6e 73 69 64 | 65 20 4d 61 63 69 6e 74 |s:.Insid|e Macint|
|00000e80| 6f 73 68 2c 20 56 6f 6c | 75 6d 65 20 56 2c 20 54 |osh, Vol|ume V, T|
|00000e90| 68 65 20 41 70 70 6c 65 | 20 44 65 73 6b 74 6f 70 |he Apple| Desktop|
|00000ea0| 20 42 75 73 0d 4d 61 63 | 69 6e 74 6f 73 68 20 46 | Bus.Mac|intosh F|
|00000eb0| 61 6d 69 6c 79 20 48 61 | 72 64 77 61 72 65 20 52 |amily Ha|rdware R|
|00000ec0| 65 66 65 72 65 6e 63 65 | 0d 41 70 70 6c 65 20 49 |eference|.Apple I|
|00000ed0| 49 47 53 20 48 61 72 64 | 77 61 72 65 20 52 65 66 |IGS Hard|ware Ref|
|00000ee0| 65 72 65 6e 63 65 20 4d | 61 6e 75 61 6c 0d 41 70 |erence M|anual.Ap|
|00000ef0| 70 6c 65 20 49 49 47 53 | 20 46 69 72 6d 77 61 72 |ple IIGS| Firmwar|
|00000f00| 65 20 52 65 66 65 72 65 | 6e 63 65 20 4d 61 6e 75 |e Refere|nce Manu|
|00000f10| 61 6c 0d 49 4d 50 4f 52 | 54 41 4e 54 20 4e 4f 54 |al.IMPOR|TANT NOT|
|00000f20| 45 3a 20 49 6e 20 74 68 | 65 20 63 61 73 65 20 6f |E: In th|e case o|
|00000f30| 66 20 61 20 64 69 73 63 | 72 65 70 61 6e 63 79 20 |f a disc|repancy |
|00000f40| 62 65 74 77 65 65 6e 20 | 74 68 65 20 41 44 42 20 |between |the ADB |
|00000f50| 73 70 65 63 69 66 69 63 | 61 74 69 6f 6e 20 61 6e |specific|ation an|
|00000f60| 64 20 61 20 72 65 66 65 | 72 65 6e 63 65 20 6d 61 |d a refe|rence ma|
|00000f70| 6e 75 61 6c 2c 20 74 68 | 65 20 73 70 65 63 69 66 |nual, th|e specif|
|00000f80| 69 63 61 74 69 6f 6e 20 | 73 75 70 65 72 73 65 64 |ication |supersed|
|00000f90| 65 73 2e 0d 42 61 75 6d | 2c 20 50 65 74 65 72 2e |es..Baum|, Peter.|
|00000fa0| 0d d2 42 6f 61 72 64 69 | 6e 67 20 74 68 65 20 42 |..Boardi|ng the B|
|00000fb0| 75 73 2c d3 20 4d 61 63 | 55 73 65 72 2c 20 4a 75 |us,. Mac|User, Ju|
|00000fc0| 6c 79 20 31 39 38 37 2c | 20 70 2e 20 31 34 32 2e |ly 1987,| p. 142.|
|00000fd0| 0d d2 41 6e 20 4f 76 65 | 72 76 69 65 77 20 6f 66 |..An Ove|rview of|
|00000fe0| 20 41 70 70 6c 65 20 44 | 65 73 6b 74 6f 70 20 42 | Apple D|esktop B|
|00000ff0| 75 73 2c d3 20 43 61 6c | 6c 20 41 2e 50 2e 50 2e |us,. Cal|l A.P.P.|
|00001000| 4c 2e 45 2e 2c 20 4a 75 | 6e 65 20 31 39 38 37 2c |L.E., Ju|ne 1987,|
|00001010| 20 70 2e 20 32 34 2e 0d | 49 6e 20 61 64 64 69 74 | p. 24..|In addit|
|00001020| 69 6f 6e 20 74 6f 20 74 | 68 65 20 77 72 69 74 74 |ion to t|he writt|
|00001030| 65 6e 20 77 6f 72 64 2c | 20 74 68 65 72 65 20 61 |en word,| there a|
|00001040| 72 65 20 73 6f 6d 65 20 | 63 6f 64 65 20 73 61 6d |re some |code sam|
|00001050| 70 6c 65 73 20 74 68 61 | 74 20 77 69 6c 6c 20 70 |ples tha|t will p|
|00001060| 72 6f 62 61 62 6c 79 20 | 70 72 6f 76 65 20 75 73 |robably |prove us|
|00001070| 65 66 75 6c 3a 0d a5 20 | 4d 61 63 44 54 53 20 53 |eful:.. |MacDTS S|
|00001080| 61 6d 70 6c 65 20 43 6f | 64 65 20 23 53 43 2e 30 |ample Co|de #SC.0|
|00001090| 31 37 2e 54 62 6c 74 44 | 72 76 72 20 2d 20 41 6e |17.TbltD|rvr - An|
|000010a0| 20 65 78 61 6d 70 6c 65 | 20 70 6f 69 6e 74 69 6e | example| pointin|
|000010b0| 67 20 64 65 76 69 63 65 | 20 64 72 69 76 65 72 20 |g device| driver |
|000010c0| 66 6f 72 20 74 68 65 20 | 4d 61 63 69 6e 74 6f 73 |for the |Macintos|
|000010d0| 68 0d a5 20 41 44 42 4c | 69 73 74 65 72 20 2d 20 |h.. ADBL|ister - |
|000010e0| 41 20 73 69 6d 70 6c 65 | 20 70 72 6f 67 72 61 6d |A simple| program|
|000010f0| 20 74 68 61 74 20 75 73 | 65 73 20 74 68 65 20 41 | that us|es the A|
|00001100| 44 42 20 6d 61 6e 61 67 | 65 72 20 74 6f 20 64 69 |DB manag|er to di|
|00001110| 73 70 6c 61 79 20 69 6e | 66 6f 72 6d 61 74 69 6f |splay in|formatio|
|00001120| 6e 20 61 62 6f 75 74 20 | 64 65 76 69 63 65 73 20 |n about |devices |
|00001130| 63 6f 6e 6e 65 63 74 65 | 64 20 74 6f 20 41 44 42 |connecte|d to ADB|
|00001140| 2e 20 28 4f 6e 20 74 68 | 65 20 44 65 76 65 6c 6f |. (On th|e Develo|
|00001150| 70 65 72 20 53 65 72 69 | 65 73 20 43 44 2c 20 69 |per Seri|es CD, i|
|00001160| 6e 20 61 20 66 6f 6c 64 | 65 72 20 63 61 6c 6c 65 |n a fold|er calle|
|00001170| 64 20 d2 43 61 6d 65 72 | 6f 6e d5 73 20 53 6f 75 |d .Camer|on.s Sou|
|00001180| 72 63 65 d3 29 2e 0d 46 | 69 6e 61 6c 6c 79 2c 20 |rce.)..F|inally, |
|00001190| 66 6f 72 20 61 6e 79 20 | 72 65 6d 61 69 6e 69 6e |for any |remainin|
|000011a0| 67 20 71 75 65 73 74 69 | 6f 6e 73 2c 20 63 6f 6e |g questi|ons, con|
|000011b0| 74 61 63 74 20 4d 61 63 | 69 6e 74 6f 73 68 20 44 |tact Mac|intosh D|
|000011c0| 65 76 65 6c 6f 70 65 72 | 20 54 65 63 68 6e 69 63 |eveloper| Technic|
|000011d0| 61 6c 20 53 75 70 70 6f | 72 74 20 76 69 61 20 41 |al Suppo|rt via A|
|000011e0| 70 70 6c 65 4c 69 6e 6b | 20 61 74 20 d2 4d 61 63 |ppleLink| at .Mac|
|000011f0| 44 54 53 d3 20 6f 72 20 | 76 69 61 20 74 68 65 20 |DTS. or |via the |
|00001200| 55 53 20 4d 61 69 6c 20 | 61 74 3a 20 0d 4d 61 63 |US Mail |at: .Mac|
|00001210| 69 6e 74 6f 73 68 20 44 | 65 76 65 6c 6f 70 65 72 |intosh D|eveloper|
|00001220| 20 54 65 63 68 6e 69 63 | 61 6c 20 53 75 70 70 6f | Technic|al Suppo|
|00001230| 72 74 0d 41 70 70 6c 65 | 20 43 6f 6d 70 75 74 65 |rt.Apple| Compute|
|00001240| 72 2c 20 49 6e 63 2e 0d | 32 30 34 30 30 20 53 74 |r, Inc..|20400 St|
|00001250| 65 76 65 6e 73 20 43 72 | 65 65 6b 20 42 6c 76 64 |evens Cr|eek Blvd|
|00001260| 2e 20 4d 53 20 37 35 2d | 33 54 0d 43 75 70 65 72 |. MS 75-|3T.Cuper|
|00001270| 74 69 6e 6f 2c 20 43 41 | 20 39 35 30 31 34 0d 41 |tino, CA| 95014.A|
|00001280| 70 70 6c 65 20 44 65 73 | 6b 74 6f 70 20 42 75 73 |pple Des|ktop Bus|
|00001290| 20 28 41 44 42 29 20 6c | 69 63 65 6e 73 69 6e 67 | (ADB) l|icensing|
|000012a0| 20 69 6e 66 6f 72 6d 61 | 74 69 6f 6e 0d 57 72 69 | informa|tion.Wri|
|000012b0| 74 74 65 6e 3a 09 31 31 | 2f 32 32 2f 38 39 0d 4c |tten:.11|/22/89.L|
|000012c0| 61 73 74 20 72 65 76 69 | 65 77 65 64 3a 09 31 31 |ast revi|ewed:.11|
|000012d0| 2f 37 2f 39 30 0d 54 6f | 20 6c 69 63 65 6e 73 65 |/7/90.To| license|
|000012e0| 20 74 68 65 20 41 70 70 | 6c 65 20 44 65 73 6b 74 | the App|le Deskt|
|000012f0| 6f 70 20 42 75 73 20 61 | 6e 64 20 41 44 42 20 44 |op Bus a|nd ADB D|
|00001300| 65 76 69 63 65 20 53 70 | 65 63 69 66 69 63 61 74 |evice Sp|ecificat|
|00001310| 69 6f 6e 73 2c 20 63 6f | 6e 74 61 63 74 3a 0d 20 |ions, co|ntact:. |
|00001320| 20 20 20 41 70 70 6c 65 | 20 53 6f 66 74 77 61 72 | Apple| Softwar|
|00001330| 65 20 4c 69 63 65 6e 73 | 69 6e 67 0d 20 20 20 20 |e Licens|ing. |
|00001340| 41 70 70 6c 65 20 43 6f | 6d 70 75 74 65 72 2c 20 |Apple Co|mputer, |
|00001350| 49 6e 63 2e 0d 20 20 20 | 20 32 30 35 32 35 20 4d |Inc.. | 20525 M|
|00001360| 61 72 69 61 6e 69 20 41 | 76 65 2e 2c 20 4d 2f 53 |ariani A|ve., M/S|
|00001370| 20 33 38 2d 49 0d 20 20 | 20 20 43 75 70 65 72 74 | 38-I. | Cupert|
|00001380| 69 6e 6f 2c 20 43 41 20 | 39 35 30 31 34 0d 20 20 |ino, CA |95014. |
|00001390| 20 20 31 2d 34 30 38 2d | 39 37 34 2d 34 36 36 37 | 1-408-|974-4667|
|000013a0| 0d 20 20 20 20 41 70 70 | 6c 65 4c 69 6e 6b 3a 20 |. App|leLink: |
|000013b0| 53 57 2e 4c 49 43 45 4e | 53 45 0d 41 44 42 20 6e |SW.LICEN|SE.ADB n|
|000013c0| 61 6d 65 20 6d 61 70 70 | 69 6e 67 0d 57 72 69 74 |ame mapp|ing.Writ|
|000013d0| 74 65 6e 3a 09 31 32 2f | 31 39 2f 39 30 0d 4c 61 |ten:.12/|19/90.La|
|000013e0| 73 74 20 72 65 76 69 65 | 77 65 64 3a 09 31 31 2f |st revie|wed:.11/|
|000013f0| 31 36 2f 39 31 0d 57 68 | 65 72 65 20 69 73 20 74 |16/91.Wh|ere is t|
|00001400| 68 65 20 74 72 61 6e 73 | 6c 61 74 69 6f 6e 20 6f |he trans|lation o|
|00001410| 66 20 41 44 42 20 28 41 | 70 70 6c 65 20 44 65 73 |f ADB (A|pple Des|
|00001420| 6b 74 6f 70 20 42 75 73 | 29 20 74 79 70 65 20 66 |ktop Bus|) type f|
|00001430| 72 6f 6d 20 61 6e 20 75 | 6e 73 69 67 6e 65 64 20 |rom an u|nsigned |
|00001440| 69 6e 74 65 67 65 72 20 | 28 65 2e 67 2e 2c 20 31 |integer |(e.g., 1|
|00001450| 29 20 74 6f 20 74 68 65 | 20 d2 72 65 61 6c d3 20 |) to the| .real. |
|00001460| 74 68 69 6e 67 20 28 65 | 2e 67 2e 2c 20 d2 6d 6f |thing (e|.g., .mo|
|00001470| 75 73 65 d3 29 20 64 6f | 63 75 6d 65 6e 74 65 64 |use.) do|cumented|
|00001480| 3f 20 49 66 20 73 6f 2c | 20 77 68 61 74 20 69 73 |? If so,| what is|
|00001490| 20 69 74 3f 0d 5f 5f 5f | 0d 54 68 65 20 6f 6e 6c | it?.___|.The onl|
|000014a0| 79 20 6d 61 70 70 69 6e | 67 73 20 6f 66 20 64 65 |y mappin|gs of de|
|000014b0| 76 69 63 65 20 49 44 73 | 20 61 6e 64 20 61 64 64 |vice IDs| and add|
|000014c0| 72 65 73 73 65 73 20 74 | 6f 20 6e 61 6d 65 73 20 |resses t|o names |
|000014d0| 74 68 61 74 20 79 6f 75 | 20 63 61 6e 20 72 65 6c |that you| can rel|
|000014e0| 79 20 6f 6e 20 61 72 65 | 20 74 68 65 20 6f 6e 65 |y on are| the one|
|000014f0| 73 20 74 68 61 74 20 61 | 70 70 65 61 72 20 69 6e |s that a|ppear in|
|00001500| 20 49 6e 73 69 64 65 20 | 4d 61 63 69 6e 74 6f 73 | Inside |Macintos|
|00001510| 68 2e 20 4d 6f 73 74 20 | 64 65 76 69 63 65 73 20 |h. Most |devices |
|00001520| 61 70 70 65 61 72 20 6c | 69 6b 65 20 6f 6e 65 20 |appear l|ike one |
|00001530| 6f 66 20 74 68 6f 73 65 | 20 64 65 76 69 63 65 73 |of those| devices|
|00001540| 2e 20 48 6f 77 65 76 65 | 72 2c 20 74 68 65 72 65 |. Howeve|r, there|
|00001550| 20 69 73 6e d5 74 20 61 | 6e 79 20 6f 74 68 65 72 | isn.t a|ny other|
|00001560| 20 49 44 20 74 6f 20 6e | 61 6d 65 20 6d 61 70 70 | ID to n|ame mapp|
|00001570| 69 6e 67 73 2e 0d 41 44 | 42 20 70 72 6f 62 6c 65 |ings..AD|B proble|
|00001580| 6d 73 20 66 72 6f 6d 20 | 74 69 6d 69 6e 67 20 65 |ms from |timing e|
|00001590| 78 74 72 65 6d 65 73 20 | 26 20 75 6e 64 65 66 69 |xtremes |& undefi|
|000015a0| 6e 65 64 20 74 72 61 6e | 73 61 63 74 69 6f 6e 20 |ned tran|saction |
|000015b0| 73 69 7a 65 73 0d 57 72 | 69 74 74 65 6e 3a 09 31 |sizes.Wr|itten:.1|
|000015c0| 30 2f 32 32 2f 39 30 0d | 4c 61 73 74 20 72 65 76 |0/22/90.|Last rev|
|000015d0| 69 65 77 65 64 3a 09 32 | 2f 32 30 2f 39 31 0d 57 |iewed:.2|/20/91.W|
|000015e0| 68 79 20 64 6f 20 6d 79 | 20 41 44 42 20 64 65 76 |hy do my| ADB dev|
|000015f0| 69 63 65 73 20 66 61 69 | 6c 20 6f 66 74 65 6e 20 |ices fai|l often |
|00001600| 61 66 74 65 72 20 61 20 | 72 65 73 74 61 72 74 20 |after a |restart |
|00001610| 6f 6e 20 6d 79 20 4d 61 | 63 69 6e 74 6f 73 68 20 |on my Ma|cintosh |
|00001620| 49 49 66 78 2c 20 62 75 | 74 20 77 6f 72 6b 20 66 |IIfx, bu|t work f|
|00001630| 69 6e 65 20 6f 6e 20 6f | 74 68 65 72 20 4d 61 63 |ine on o|ther Mac|
|00001640| 69 6e 74 6f 73 68 20 6d | 6f 64 65 6c 73 3f 20 57 |intosh m|odels? W|
|00001650| 68 79 20 64 6f 20 74 68 | 65 79 20 73 69 6d 70 6c |hy do th|ey simpl|
|00001660| 79 20 6e 6f 74 20 77 6f | 72 6b 20 6f 6e 20 74 68 |y not wo|rk on th|
|00001670| 65 20 4d 61 63 69 6e 74 | 6f 73 68 20 49 49 73 69 |e Macint|osh IIsi|
|00001680| 20 61 6e 64 20 4d 61 63 | 69 6e 74 6f 73 68 20 4c | and Mac|intosh L|
|00001690| 43 3f 0d 5f 5f 5f 0d 57 | 69 74 68 20 65 61 63 68 |C?.___.W|ith each|
|000016a0| 20 6e 65 77 20 73 79 73 | 74 65 6d 20 72 65 6c 65 | new sys|tem rele|
|000016b0| 61 73 65 20 61 6e 64 20 | 65 61 63 68 20 6e 65 77 |ase and |each new|
|000016c0| 20 6d 61 63 68 69 6e 65 | 20 77 65 20 68 65 61 72 | machine| we hear|
|000016d0| 20 61 20 66 65 77 20 6d | 6f 72 65 20 63 6f 6d 70 | a few m|ore comp|
|000016e0| 6c 61 69 6e 74 73 20 61 | 62 6f 75 74 20 62 72 6f |laints a|bout bro|
|000016f0| 6b 65 6e 20 41 44 42 20 | 64 65 76 69 63 65 73 2e |ken ADB |devices.|
|00001700| 20 54 68 69 73 20 69 73 | 20 74 72 75 65 20 6f 66 | This is| true of|
|00001710| 20 73 79 73 74 65 6d 20 | 73 6f 66 74 77 61 72 65 | system |software|
|00001720| 20 76 65 72 73 69 6f 6e | 73 20 36 2e 30 2e 34 20 | version|s 6.0.4 |
|00001730| 61 6e 64 20 36 2e 30 2e | 35 2c 20 61 6e 64 20 74 |and 6.0.|5, and t|
|00001740| 68 65 20 4d 61 63 69 6e | 74 6f 73 68 20 49 49 63 |he Macin|tosh IIc|
|00001750| 69 2c 20 49 49 66 78 2c | 20 49 49 73 69 2c 20 61 |i, IIfx,| IIsi, a|
|00001760| 6e 64 20 4c 43 2e 20 0d | 41 20 6c 69 74 74 6c 65 |nd LC. .|A little|
|00001770| 20 68 69 73 74 6f 72 69 | 63 61 6c 20 70 65 72 73 | histori|cal pers|
|00001780| 70 65 63 74 69 76 65 20 | 69 73 20 69 6e 20 6f 72 |pective |is in or|
|00001790| 64 65 72 2e 20 54 68 65 | 20 41 70 70 6c 65 20 44 |der. The| Apple D|
|000017a0| 65 73 6b 74 6f 70 20 42 | 75 73 20 73 70 65 63 69 |esktop B|us speci|
|000017b0| 66 69 63 61 74 69 6f 6e | 20 69 73 20 70 72 65 74 |fication| is pret|
|000017c0| 74 79 20 73 6c 6f 70 70 | 79 20 77 69 74 68 20 74 |ty slopp|y with t|
|000017d0| 6f 6c 65 72 61 6e 63 65 | 73 20 61 73 20 68 69 67 |olerance|s as hig|
|000017e0| 68 20 61 73 20 b1 33 30 | 25 20 6f 6e 20 73 6f 6d |h as .30|% on som|
|000017f0| 65 20 73 69 67 6e 61 6c | 20 74 69 6d 69 6e 67 73 |e signal| timings|
|00001800| 2e 20 54 68 69 73 20 68 | 61 73 20 6c 65 64 20 74 |. This h|as led t|
|00001810| 6f 20 6d 61 6e 79 20 6d | 61 72 67 69 6e 61 6c 20 |o many m|arginal |
|00001820| 69 6d 70 6c 65 6d 65 6e | 74 61 74 69 6f 6e 73 20 |implemen|tations |
|00001830| 66 6f 72 20 41 44 42 20 | 64 65 76 69 63 65 73 2c |for ADB |devices,|
|00001840| 20 62 6f 74 68 20 77 69 | 74 68 69 6e 20 41 70 70 | both wi|thin App|
|00001850| 6c 65 20 61 6e 64 20 66 | 72 6f 6d 20 74 68 69 72 |le and f|rom thir|
|00001860| 64 20 70 61 72 74 69 65 | 73 2e 20 55 6e 66 6f 72 |d partie|s. Unfor|
|00001870| 74 75 6e 61 74 65 6c 79 | 2c 20 74 68 65 20 66 69 |tunately|, the fi|
|00001880| 72 73 74 20 67 65 6e 65 | 72 61 74 69 6f 6e 20 6f |rst gene|ration o|
|00001890| 66 20 6d 61 63 68 69 6e | 65 73 20 73 75 70 70 6f |f machin|es suppo|
|000018a0| 72 74 69 6e 67 20 41 44 | 42 20 63 6f 75 6c 64 20 |rting AD|B could |
|000018b0| 68 61 76 65 20 62 65 65 | 6e 20 65 76 65 6e 20 6d |have bee|n even m|
|000018c0| 6f 72 65 20 6c 65 6e 69 | 65 6e 74 20 74 68 61 6e |ore leni|ent than|
|000018d0| 20 74 68 65 20 73 70 65 | 63 69 66 69 63 61 74 69 | the spe|cificati|
|000018e0| 6f 6e 2c 20 73 6f 20 74 | 68 61 74 20 64 65 76 69 |on, so t|hat devi|
|000018f0| 63 65 73 20 77 68 69 63 | 68 20 77 65 72 65 20 2d |ces whic|h were -|
|00001900| 33 35 25 20 6d 69 67 68 | 74 20 68 61 76 65 20 77 |35% migh|t have w|
|00001910| 6f 72 6b 65 64 20 6a 75 | 73 74 20 66 69 6e 65 2e |orked ju|st fine.|
|00001920| 20 49 6e 20 61 74 20 6c | 65 61 73 74 20 6f 6e 65 | In at l|east one|
|00001930| 20 69 6e 73 74 61 6e 63 | 65 2c 20 61 20 6d 69 6e | instanc|e, a min|
|00001940| 69 6d 75 6d 20 74 69 6d | 69 6e 67 20 77 61 73 20 |imum tim|ing was |
|00001950| 6e 6f 74 20 65 6e 66 6f | 72 63 65 64 20 61 74 20 |not enfo|rced at |
|00001960| 61 6c 6c 21 20 4f 75 72 | 20 6d 6f 72 65 20 72 65 |all! Our| more re|
|00001970| 63 65 6e 74 20 70 72 6f | 64 75 63 74 73 20 61 6e |cent pro|ducts an|
|00001980| 64 20 73 79 73 74 65 6d | 20 73 6f 66 74 77 61 72 |d system| softwar|
|00001990| 65 2c 20 77 68 69 6c 65 | 20 72 65 6d 61 69 6e 69 |e, while| remaini|
|000019a0| 6e 67 20 77 69 74 68 69 | 6e 20 73 70 65 63 69 66 |ng withi|n specif|
|000019b0| 69 63 61 74 69 6f 6e 73 | 2c 20 61 72 65 20 72 65 |ications|, are re|
|000019c0| 6c 61 74 69 76 65 6c 79 | 20 73 74 72 69 63 74 65 |latively| stricte|
|000019d0| 72 20 61 62 6f 75 74 20 | 61 6c 6c 6f 77 61 62 6c |r about |allowabl|
|000019e0| 65 20 74 6f 6c 65 72 61 | 6e 63 65 73 2e 0d 54 68 |e tolera|nces..Th|
|000019f0| 65 20 6d 6f 73 74 20 63 | 6f 6d 6d 6f 6e 20 6d 61 |e most c|ommon ma|
|00001a00| 6e 69 66 65 73 74 61 74 | 69 6f 6e 20 6f 66 20 61 |nifestat|ion of a|
|00001a10| 6e 20 41 44 42 20 74 69 | 6d 69 6e 67 20 70 72 6f |n ADB ti|ming pro|
|00001a20| 62 6c 65 6d 20 69 73 20 | 64 75 72 69 6e 67 20 64 |blem is |during d|
|00001a30| 65 76 69 63 65 20 69 6e | 69 74 69 61 6c 69 7a 61 |evice in|itializa|
|00001a40| 74 69 6f 6e 2e 20 44 65 | 76 65 6c 6f 70 65 72 73 |tion. De|velopers|
|00001a50| 20 6d 75 73 74 20 61 64 | 68 65 72 65 20 73 74 72 | must ad|here str|
|00001a60| 69 63 74 6c 79 20 74 6f | 20 74 68 65 20 6d 69 6e |ictly to| the min|
|00001a70| 69 6d 75 6d 20 61 6e 64 | 20 6d 61 78 69 6d 75 6d |imum and| maximum|
|00001a80| 20 64 65 6c 61 79 20 74 | 69 6d 65 73 20 66 6f 72 | delay t|imes for|
|00001a90| 20 69 6e 69 74 69 61 6c | 69 7a 61 74 69 6f 6e 20 | initial|ization |
|00001aa0| 74 72 61 6e 73 61 63 74 | 69 6f 6e 73 20 61 6e 64 |transact|ions and|
|00001ab0| 20 74 68 65 79 20 73 68 | 6f 75 6c 64 20 61 69 6d | they sh|ould aim|
|00001ac0| 20 66 6f 72 20 74 68 65 | 20 6d 69 64 64 6c 65 20 | for the| middle |
|00001ad0| 6f 66 20 74 68 65 20 74 | 6f 6c 65 72 61 6e 63 65 |of the t|olerance|
|00001ae0| 20 77 69 6e 64 6f 77 2c | 20 6e 6f 74 20 74 68 65 | window,| not the|
|00001af0| 20 65 64 67 65 2e 20 4f | 66 20 70 61 72 74 69 63 | edge. O|f partic|
|00001b00| 75 6c 61 72 20 69 6d 70 | 6f 72 74 61 6e 63 65 20 |ular imp|ortance |
|00001b10| 72 65 63 65 6e 74 6c 79 | 20 69 73 20 74 68 65 20 |recently| is the |
|00001b20| 54 6c 74 20 28 73 74 6f | 70 20 74 6f 20 73 74 61 |Tlt (sto|p to sta|
|00001b30| 72 74 20 74 69 6d 65 29 | 20 70 61 72 61 6d 65 74 |rt time)| paramet|
|00001b40| 65 72 20 66 72 6f 6d 20 | 74 68 65 20 41 44 42 20 |er from |the ADB |
|00001b50| 53 70 65 63 69 66 69 63 | 61 74 69 6f 6e 2e 20 4e |Specific|ation. N|
|00001b60| 6f 6d 69 6e 61 6c 6c 79 | 20 69 74 20 69 73 20 32 |ominally| it is 2|
|00001b70| 30 30 20 b5 73 2e 20 54 | 68 65 20 6d 69 6e 69 6d |00 .s. T|he minim|
|00001b80| 75 6d 20 64 65 6c 61 79 | 20 69 73 20 31 34 30 20 |um delay| is 140 |
|00001b90| b5 73 2e 20 4d 61 6e 79 | 20 64 65 76 69 63 65 73 |.s. Many| devices|
|00001ba0| 20 77 68 69 63 68 20 64 | 6f 20 6e 6f 74 20 69 6e | which d|o not in|
|00001bb0| 69 74 69 61 6c 69 7a 65 | 20 70 72 6f 70 65 72 6c |itialize| properl|
|00001bc0| 79 20 61 72 65 20 66 6f | 75 6e 64 20 74 6f 20 72 |y are fo|und to r|
|00001bd0| 65 73 70 6f 6e 64 20 6d | 6f 72 65 20 71 75 69 63 |espond m|ore quic|
|00001be0| 6b 6c 79 20 74 68 61 6e | 20 74 68 69 73 20 6d 69 |kly than| this mi|
|00001bf0| 6e 69 6d 75 6d 20 64 65 | 6c 61 79 20 64 75 72 69 |nimum de|lay duri|
|00001c00| 6e 67 20 74 68 65 20 54 | 61 6c 6b 52 33 20 69 6e |ng the T|alkR3 in|
|00001c10| 69 74 69 61 6c 69 7a 61 | 74 69 6f 6e 20 73 65 71 |itializa|tion seq|
|00001c20| 75 65 6e 63 65 2e 0d 54 | 68 65 20 70 72 6f 62 6c |uence..T|he probl|
|00001c30| 65 6d 20 77 69 74 68 20 | 74 68 65 20 4d 61 63 69 |em with |the Maci|
|00001c40| 6e 74 6f 73 68 20 49 49 | 73 69 20 61 6e 64 20 4c |ntosh II|si and L|
|00001c50| 43 20 69 73 20 6f 6e 65 | 20 6f 66 20 70 72 6f 74 |C is one| of prot|
|00001c60| 6f 63 6f 6c 73 2e 20 54 | 68 65 20 41 44 42 20 73 |ocols. T|he ADB s|
|00001c70| 70 65 63 69 66 69 63 61 | 74 69 6f 6e 20 72 65 71 |pecifica|tion req|
|00001c80| 75 69 72 65 73 20 61 20 | 74 72 61 6e 73 61 63 74 |uires a |transact|
|00001c90| 69 6f 6e 20 74 6f 20 63 | 6f 6e 73 69 73 74 20 6f |ion to c|onsist o|
|00001ca0| 66 20 61 74 20 6c 65 61 | 73 74 20 74 77 6f 20 62 |f at lea|st two b|
|00001cb0| 79 74 65 73 2e 20 53 6f | 6d 65 20 64 65 76 69 63 |ytes. So|me devic|
|00001cc0| 65 2f 64 72 69 76 65 72 | 20 63 6f 6d 62 69 6e 61 |e/driver| combina|
|00001cd0| 74 69 6f 6e 73 20 68 61 | 76 65 20 62 65 65 6e 20 |tions ha|ve been |
|00001ce0| 67 65 74 74 69 6e 67 20 | 61 77 61 79 20 77 69 74 |getting |away wit|
|00001cf0| 68 20 d2 73 69 6e 67 6c | 65 2d 62 79 74 65 d3 20 |h .singl|e-byte. |
|00001d00| 74 72 61 6e 73 61 63 74 | 69 6f 6e 73 2e 20 54 68 |transact|ions. Th|
|00001d10| 65 73 65 20 77 69 6c 6c | 20 6e 6f 74 20 6e 65 63 |ese will| not nec|
|00001d20| 65 73 73 61 72 69 6c 79 | 20 73 6c 69 70 20 62 79 |essarily| slip by|
|00001d30| 20 6e 65 77 65 72 20 69 | 6d 70 6c 65 6d 65 6e 74 | newer i|mplement|
|00001d40| 61 74 69 6f 6e 73 2e 0d | 41 44 42 20 70 6f 77 65 |ations..|ADB powe|
|00001d50| 72 20 72 65 71 75 69 72 | 65 6d 65 6e 74 73 20 6f |r requir|ements o|
|00001d60| 6e 20 4d 61 63 69 6e 74 | 6f 73 68 20 4c 43 0d 57 |n Macint|osh LC.W|
|00001d70| 72 69 74 74 65 6e 3a 09 | 33 2f 31 39 2f 39 31 0d |ritten:.|3/19/91.|
|00001d80| 4c 61 73 74 20 72 65 76 | 69 65 77 65 64 3a 09 34 |Last rev|iewed:.4|
|00001d90| 2f 32 39 2f 39 31 0d 57 | 68 61 74 20 69 73 20 74 |/29/91.W|hat is t|
|00001da0| 68 65 20 6d 61 78 69 6d | 75 6d 20 70 6f 77 65 72 |he maxim|um power|
|00001db0| 20 64 72 61 77 20 6f 6e | 20 74 68 65 20 41 70 70 | draw on| the App|
|00001dc0| 6c 65 20 44 65 73 6b 74 | 6f 70 20 42 75 73 20 28 |le Deskt|op Bus (|
|00001dd0| 41 44 42 29 20 6f 6e 20 | 74 68 65 20 4d 61 63 69 |ADB) on |the Maci|
|00001de0| 6e 74 6f 73 68 20 4c 43 | 3f 20 54 68 65 20 6c 6f |ntosh LC|? The lo|
|00001df0| 77 2d 70 6f 77 65 72 20 | 6d 6f 75 73 65 20 73 70 |w-power |mouse sp|
|00001e00| 65 63 69 66 69 63 61 74 | 69 6f 6e 73 20 73 74 61 |ecificat|ions sta|
|00001e10| 74 65 20 74 68 61 74 20 | 74 68 65 20 6d 6f 75 73 |te that |the mous|
|00001e20| 65 20 73 68 61 6c 6c 20 | 63 6f 6e 73 75 6d 65 20 |e shall |consume |
|00001e30| 6e 6f 20 6d 6f 72 65 20 | 74 68 61 6e 20 31 30 20 |no more |than 10 |
|00001e40| 6d 41 2e 20 57 68 79 20 | 64 6f 65 73 20 41 70 70 |mA. Why |does App|
|00001e50| 6c 65 20 73 70 65 63 69 | 66 79 20 38 30 20 6d 41 |le speci|fy 80 mA|
|00001e60| 20 66 6f 72 20 61 20 6d | 6f 75 73 65 20 6f 6e 20 | for a m|ouse on |
|00001e70| 74 68 65 20 4d 61 63 69 | 6e 74 6f 73 68 20 4c 43 |the Maci|ntosh LC|
|00001e80| 3f 20 57 68 61 74 20 64 | 6f 65 73 20 41 70 70 6c |? What d|oes Appl|
|00001e90| 65 20 72 65 63 6f 6d 6d | 65 6e 64 20 66 6f 72 20 |e recomm|end for |
|00001ea0| 6d 61 78 69 6d 75 6d 20 | 70 6f 77 65 72 20 63 6f |maximum |power co|
|00001eb0| 6e 73 75 6d 70 74 69 6f | 6e 20 66 6f 72 20 61 20 |nsumptio|n for a |
|00001ec0| 0d 74 68 69 72 64 2d 70 | 61 72 74 79 20 41 44 42 |.third-p|arty ADB|
|00001ed0| 20 64 65 76 69 63 65 3f | 20 0d 5f 5f 5f 0d 54 68 | device?| .___.Th|
|00001ee0| 65 20 70 6f 77 65 72 20 | 62 75 64 67 65 74 20 66 |e power |budget f|
|00001ef0| 6f 72 20 74 68 65 20 4d | 61 63 69 6e 74 6f 73 68 |or the M|acintosh|
|00001f00| 20 4c 43 d5 73 20 41 44 | 42 20 70 6f 72 74 20 63 | LC.s AD|B port c|
|00001f10| 68 61 6e 67 65 64 20 61 | 66 74 65 72 20 74 68 65 |hanged a|fter the|
|00001f20| 20 69 6e 66 6f 72 6d 61 | 74 69 6f 6e 20 77 61 73 | informa|tion was|
|00001f30| 20 63 6f 6d 70 69 6c 65 | 64 20 66 6f 72 20 69 74 | compile|d for it|
|00001f40| 73 20 70 72 6f 64 75 63 | 74 20 69 6e 66 6f 72 6d |s produc|t inform|
|00001f50| 61 74 69 6f 6e 20 73 68 | 65 65 74 73 2e 20 54 68 |ation sh|eets. Th|
|00001f60| 65 20 4d 61 63 69 6e 74 | 6f 73 68 20 4c 43 20 63 |e Macint|osh LC c|
|00001f70| 61 6e 20 73 75 70 70 6c | 79 20 74 68 65 20 73 74 |an suppl|y the st|
|00001f80| 61 6e 64 61 72 64 20 35 | 30 30 20 6d 41 20 74 68 |andard 5|00 mA th|
|00001f90| 61 74 20 61 6c 6c 20 41 | 44 42 20 68 6f 73 74 73 |at all A|DB hosts|
|00001fa0| 20 61 72 65 20 73 75 70 | 70 6f 73 65 64 20 74 6f | are sup|posed to|
|00001fb0| 20 73 75 70 70 6c 79 2e | 0d 54 68 65 20 73 74 61 | supply.|.The sta|
|00001fc0| 6e 64 61 72 64 20 6b 65 | 79 62 6f 61 72 64 20 61 |ndard ke|yboard a|
|00001fd0| 6e 64 20 6d 6f 75 73 65 | 20 61 72 65 20 73 70 65 |nd mouse| are spe|
|00001fe0| 63 69 66 69 65 64 20 74 | 6f 20 64 72 61 77 20 6e |cified t|o draw n|
|00001ff0| 6f 20 6d 6f 72 65 20 74 | 68 61 6e 20 31 30 30 20 |o more t|han 100 |
|00002000| 6d 41 2e 20 42 65 63 61 | 75 73 65 20 61 6e 79 20 |mA. Beca|use any |
|00002010| 6f 66 20 74 68 65 73 65 | 20 64 65 76 69 63 65 73 |of these| devices|
|00002020| 20 6d 61 79 20 62 65 20 | 61 74 74 61 63 68 65 64 | may be |attached|
|00002030| 20 74 6f 20 61 20 4d 61 | 63 69 6e 74 6f 73 68 20 | to a Ma|cintosh |
|00002040| 4c 43 2c 20 69 74 20 69 | 73 20 6e 65 63 65 73 73 |LC, it i|s necess|
|00002050| 61 72 79 20 74 6f 20 73 | 70 65 63 69 66 79 20 74 |ary to s|pecify t|
|00002060| 68 65 20 6d 61 63 68 69 | 6e 65 20 66 6f 72 20 73 |he machi|ne for s|
|00002070| 69 67 6e 69 66 69 63 61 | 6e 74 6c 79 20 6d 6f 72 |ignifica|ntly mor|
|00002080| 65 20 74 68 61 6e 20 74 | 68 65 20 31 30 20 6d 41 |e than t|he 10 mA|
|00002090| 20 61 63 74 75 61 6c 6c | 79 20 64 72 61 77 6e 20 | actuall|y drawn |
|000020a0| 62 79 20 d2 6c 6f 77 2d | 70 6f 77 65 72 d3 20 41 |by .low-|power. A|
|000020b0| 44 42 20 70 65 72 69 70 | 68 65 72 61 6c 73 2e 0d |DB perip|herals..|
|000020c0| 41 70 70 6c 65 20 68 61 | 73 20 61 6c 77 61 79 73 |Apple ha|s always|
|000020d0| 20 72 65 63 6f 6d 6d 65 | 6e 64 65 64 20 74 68 61 | recomme|nded tha|
|000020e0| 74 20 41 44 42 20 64 65 | 76 69 63 65 73 20 72 65 |t ADB de|vices re|
|000020f0| 71 75 69 72 69 6e 67 20 | 31 30 30 20 6d 41 20 6f |quiring |100 mA o|
|00002100| 72 20 6d 6f 72 65 20 62 | 65 20 64 65 73 69 67 6e |r more b|e design|
|00002110| 65 64 20 74 6f 20 70 72 | 6f 76 69 64 65 20 74 68 |ed to pr|ovide th|
|00002120| 65 69 72 20 6f 77 6e 20 | 35 20 56 20 70 6f 77 65 |eir own |5 V powe|
|00002130| 72 20 73 6f 75 72 63 65 | 2e 20 54 68 65 20 41 44 |r source|. The AD|
|00002140| 42 20 65 6e 67 69 6e 65 | 65 72 69 6e 67 20 73 70 |B engine|ering sp|
|00002150| 65 63 69 66 69 63 61 74 | 69 6f 6e 20 28 30 36 32 |ecificat|ion (062|
|00002160| 2d 30 32 36 37 29 2c 20 | 77 68 69 63 68 20 79 6f |-0267), |which yo|
|00002170| 75 20 67 65 74 20 77 68 | 65 6e 20 79 6f 75 20 6c |u get wh|en you l|
|00002180| 69 63 65 6e 73 65 20 6f | 75 72 20 41 44 42 20 74 |icense o|ur ADB t|
|00002190| 65 63 68 6e 6f 6c 6f 67 | 79 2c 20 68 61 73 20 62 |echnolog|y, has b|
|000021a0| 6f 74 68 20 74 68 65 20 | 68 6f 73 74 20 61 6e 64 |oth the |host and|
|000021b0| 20 74 68 65 20 64 65 76 | 69 63 65 20 70 6f 77 65 | the dev|ice powe|
|000021c0| 72 20 6c 6f 61 64 69 6e | 67 20 69 6e 66 6f 72 6d |r loadin|g inform|
|000021d0| 61 74 69 6f 6e 20 6f 6e | 20 70 61 67 65 20 34 2e |ation on| page 4.|
|000021e0| 0d 4d 69 6e 69 6d 69 7a | 69 6e 67 20 41 44 42 20 |.Minimiz|ing ADB |
|000021f0| 4d 61 6e 61 67 65 72 20 | 61 64 64 72 65 73 73 20 |Manager |address |
|00002200| 72 65 73 6f 6c 75 74 69 | 6f 6e 20 63 6f 6c 6c 69 |resoluti|on colli|
|00002210| 73 69 6f 6e 20 70 6f 74 | 65 6e 74 69 61 6c 0d 57 |sion pot|ential.W|
|00002220| 72 69 74 74 65 6e 3a 09 | 36 2f 37 2f 39 31 0d 4c |ritten:.|6/7/91.L|
|00002230| 61 73 74 20 72 65 76 69 | 65 77 65 64 3a 09 31 30 |ast revi|ewed:.10|
|00002240| 2f 31 35 2f 39 31 0d 41 | 70 70 6c 65 20 6f 66 66 |/15/91.A|pple off|
|00002250| 65 72 73 20 74 77 6f 20 | 73 75 67 67 65 73 74 69 |ers two |suggesti|
|00002260| 6f 6e 73 20 74 6f 20 6d | 69 6e 69 6d 69 7a 65 20 |ons to m|inimize |
|00002270| 74 68 65 20 70 6f 74 65 | 6e 74 69 61 6c 20 66 6f |the pote|ntial fo|
|00002280| 72 20 63 6f 6c 6c 69 73 | 69 6f 6e 73 20 64 75 72 |r collis|ions dur|
|00002290| 69 6e 67 20 61 64 64 72 | 65 73 73 20 72 65 73 6f |ing addr|ess reso|
|000022a0| 6c 75 74 69 6f 6e 20 75 | 73 69 6e 67 20 74 68 65 |lution u|sing the|
|000022b0| 20 41 70 70 6c 65 20 44 | 65 73 6b 74 6f 70 20 42 | Apple D|esktop B|
|000022c0| 75 73 20 28 41 44 42 29 | 20 4d 61 6e 61 67 65 72 |us (ADB)| Manager|
|000022d0| 3a 0d 31 2e 20 55 73 65 | 20 61 20 73 6f 6d 65 77 |:.1. Use| a somew|
|000022e0| 68 61 74 20 72 61 6e 64 | 6f 6d 20 73 74 6f 70 2d |hat rand|om stop-|
|000022f0| 74 6f 2d 73 74 61 72 74 | 20 74 69 6d 65 20 69 6e |to-start| time in|
|00002300| 20 74 68 65 20 72 61 6e | 67 65 20 0d 31 34 30 ca | the ran|ge .140.|
|00002310| b5 73 ca b2 ca 54 6c 74 | ca b2 ca 32 36 30 ca b5 |.s...Tlt|...260..|
|00002320| 73 2e 20 44 6f 6e d5 74 | 20 62 65 20 74 6f 6f 20 |s. Don.t| be too |
|00002330| 67 65 6e 65 72 6f 75 73 | 20 68 65 72 65 2c 20 68 |generous| here, h|
|00002340| 6f 77 65 76 65 72 2e 20 | 54 6c 74 20 69 73 20 6f |owever. |Tlt is o|
|00002350| 6e 65 20 6f 66 20 74 68 | 65 20 6d 6f 72 65 20 73 |ne of th|e more s|
|00002360| 65 6e 73 69 74 69 76 65 | 20 41 44 42 20 74 69 6d |ensitive| ADB tim|
|00002370| 69 6e 67 20 70 61 72 61 | 6d 65 74 65 72 73 20 61 |ing para|meters a|
|00002380| 6e 64 20 69 74 d5 73 20 | 62 65 73 74 20 74 6f 20 |nd it.s |best to |
|00002390| 62 65 20 6e 65 61 72 20 | 74 68 65 20 6d 69 64 64 |be near |the midd|
|000023a0| 6c 65 20 6f 66 20 74 68 | 65 20 77 69 6e 64 6f 77 |le of th|e window|
|000023b0| d1 74 72 79 20 6e 6f 74 | 20 74 6f 20 62 65 20 74 |.try not| to be t|
|000023c0| 6f 6f 20 63 6c 6f 73 65 | 20 74 6f 20 74 68 65 20 |oo close| to the |
|000023d0| 65 6e 64 70 6f 69 6e 74 | 73 20 6f 72 20 79 6f 75 |endpoint|s or you|
|000023e0| 20 6d 61 79 20 6e 6f 74 | 69 63 65 20 65 72 72 61 | may not|ice erra|
|000023f0| 74 69 63 20 62 65 68 61 | 76 69 6f 72 2e 20 4f 66 |tic beha|vior. Of|
|00002400| 20 63 6f 75 72 73 65 2c | 20 74 68 65 72 65 20 69 | course,| there i|
|00002410| 73 20 61 20 66 69 6e 69 | 74 65 20 61 6d 6f 75 6e |s a fini|te amoun|
|00002420| 74 20 6f 66 20 74 69 6d | 65 20 69 6e 20 74 68 65 |t of tim|e in the|
|00002430| 20 54 6c 74 20 77 69 6e | 64 6f 77 20 61 6e 64 20 | Tlt win|dow and |
|00002440| 74 68 65 72 65 20 61 72 | 65 20 61 20 66 69 6e 69 |there ar|e a fini|
|00002450| 74 65 20 6e 75 6d 62 65 | 72 20 6f 66 20 72 61 6e |te numbe|r of ran|
|00002460| 64 6f 6d 20 61 64 64 72 | 65 73 73 65 73 20 61 20 |dom addr|esses a |
|00002470| 64 65 76 69 63 65 20 6d | 61 79 20 72 65 74 75 72 |device m|ay retur|
|00002480| 6e 2c 20 62 75 74 20 69 | 6e 20 6d 6f 73 74 20 63 |n, but i|n most c|
|00002490| 61 73 65 73 20 64 65 76 | 69 63 65 73 20 73 68 6f |ases dev|ices sho|
|000024a0| 75 6c 64 20 62 65 20 61 | 62 6c 65 20 74 6f 20 72 |uld be a|ble to r|
|000024b0| 65 73 6f 6c 76 65 20 74 | 68 65 6d 73 65 6c 76 65 |esolve t|hemselve|
|000024c0| 73 20 70 72 6f 70 65 72 | 6c 79 2e 20 49 66 20 74 |s proper|ly. If t|
|000024d0| 68 65 79 20 64 6f 20 6e | 6f 74 2c 20 69 74 20 73 |hey do n|ot, it s|
|000024e0| 68 6f 75 6c 64 20 62 65 | 20 61 20 72 61 72 65 20 |hould be| a rare |
|000024f0| 63 6f 69 6e 63 69 64 65 | 6e 63 65 20 77 68 69 63 |coincide|nce whic|
|00002500| 68 20 63 61 6e 20 62 65 | 20 72 65 73 6f 6c 76 65 |h can be| resolve|
|00002510| 64 20 62 79 20 72 65 62 | 6f 6f 74 69 6e 67 20 6f |d by reb|ooting o|
|00002520| 72 20 73 69 6d 70 6c 79 | 20 75 73 69 6e 67 20 61 |r simply| using a|
|00002530| 20 75 74 69 6c 69 74 79 | 20 70 72 6f 67 72 61 6d | utility| program|
|00002540| 20 77 68 69 63 68 20 65 | 78 65 63 75 74 65 73 20 | which e|xecutes |
|00002550| 74 68 65 20 5f 41 44 42 | 52 65 69 6e 69 74 20 74 |the _ADB|Reinit t|
|00002560| 72 61 70 2e 0d 32 2e 20 | 52 65 74 75 72 6e 20 61 |rap..2. |Return a|
|00002570| 20 72 61 6e 64 6f 6d 20 | 6e 75 6d 62 65 72 20 69 | random |number i|
|00002580| 6e 20 74 68 65 20 52 33 | 20 61 64 64 72 65 73 73 |n the R3| address|
|00002590| 20 66 69 65 6c 64 2e 20 | 49 6e 20 66 61 63 74 2c | field. |In fact,|
|000025a0| 20 79 6f 75 d5 72 65 20 | 6e 65 76 65 72 20 72 65 | you.re |never re|
|000025b0| 71 75 69 72 65 64 20 74 | 6f 20 72 65 73 70 6f 6e |quired t|o respon|
|000025c0| 64 20 77 69 74 68 20 79 | 6f 75 72 20 61 63 74 75 |d with y|our actu|
|000025d0| 61 6c 20 61 64 64 72 65 | 73 73 20 69 6e 20 72 65 |al addre|ss in re|
|000025e0| 73 70 6f 6e 73 65 20 74 | 6f 20 61 20 54 61 6c 6b |sponse t|o a Talk|
|000025f0| 20 52 33 2e 20 59 6f 75 | 20 6f 6e 6c 79 20 6d 75 | R3. You| only mu|
|00002600| 73 74 20 6b 65 65 70 20 | 74 72 61 63 6b 20 6f 66 |st keep |track of|
|00002610| 20 77 68 61 74 20 79 6f | 75 72 20 63 75 72 72 65 | what yo|ur curre|
|00002620| 6e 74 20 61 64 64 72 65 | 73 73 20 69 73 20 61 6e |nt addre|ss is an|
|00002630| 64 20 72 65 61 64 64 72 | 65 73 73 20 69 6e 20 61 |d readdr|ess in a|
|00002640| 63 63 6f 72 64 61 6e 63 | 65 20 77 69 74 68 20 4c |ccordanc|e with L|
|00002650| 69 73 74 65 6e 20 52 33 | 20 63 6f 6d 6d 61 6e 64 |isten R3| command|
|00002660| 73 20 66 72 6f 6d 20 74 | 68 65 20 68 6f 73 74 2e |s from t|he host.|
|00002670| 20 42 79 20 72 65 74 75 | 72 6e 69 6e 67 20 61 20 | By retu|rning a |
|00002680| 72 61 6e 64 6f 6d 20 6e | 75 6d 62 65 72 20 69 6e |random n|umber in|
|00002690| 20 74 68 65 20 61 64 64 | 72 65 73 73 20 66 69 65 | the add|ress fie|
|000026a0| 6c 64 2c 20 79 6f 75 20 | 6d 69 6e 69 6d 69 7a 65 |ld, you |minimize|
|000026b0| 20 74 68 65 20 70 6f 73 | 73 69 62 69 6c 69 74 79 | the pos|sibility|
|000026c0| 20 74 68 61 74 20 74 77 | 6f 20 64 65 76 69 63 65 | that tw|o device|
|000026d0| 73 20 61 72 65 20 74 72 | 61 6e 73 6d 69 74 74 69 |s are tr|ansmitti|
|000026e0| 6e 67 20 65 78 61 63 74 | 6c 79 20 74 68 65 20 73 |ng exact|ly the s|
|000026f0| 61 6d 65 20 64 61 74 61 | 20 6f 6e 20 74 68 65 20 |ame data| on the |
|00002700| 62 75 73 20 61 74 20 65 | 78 61 63 74 6c 79 20 74 |bus at e|xactly t|
|00002710| 68 65 20 73 61 6d 65 20 | 74 69 6d 65 2e 20 54 68 |he same |time. Th|
|00002720| 69 73 20 69 73 20 74 68 | 65 20 6f 6e 6c 79 20 69 |is is th|e only i|
|00002730| 6e 73 74 61 6e 63 65 20 | 77 68 65 72 65 20 61 20 |nstance |where a |
|00002740| 77 65 6c 6c 2d 64 65 73 | 69 67 6e 65 64 20 61 6c |well-des|igned al|
|00002750| 67 6f 72 69 74 68 6d 20 | 77 6f 75 6c 64 20 66 61 |gorithm |would fa|
|00002760| 69 6c 20 74 6f 20 64 65 | 74 65 63 74 20 61 20 63 |il to de|tect a c|
|00002770| 6f 6c 6c 69 73 69 6f 6e | 2e 0d 41 20 77 65 6c 6c |ollision|..A well|
|00002780| 2d 64 65 73 69 67 6e 65 | 64 20 61 6c 67 6f 72 69 |-designe|d algori|
|00002790| 74 68 6d 20 64 65 74 65 | 63 74 73 20 63 6f 6c 6c |thm dete|cts coll|
|000027a0| 69 73 69 6f 6e 73 20 62 | 79 20 73 65 6e 73 69 6e |isions b|y sensin|
|000027b0| 67 20 74 68 65 20 41 44 | 42 20 64 61 74 61 20 6c |g the AD|B data l|
|000027c0| 69 6e 65 20 61 73 73 65 | 72 74 65 64 20 77 68 65 |ine asse|rted whe|
|000027d0| 6e 20 69 74 20 69 73 20 | 6e 6f 74 20 65 78 70 65 |n it is |not expe|
|000027e0| 63 74 65 64 20 74 6f 20 | 62 65 2e 20 49 74 20 6d |cted to |be. It m|
|000027f0| 75 73 74 20 6d 6f 6e 69 | 74 6f 72 20 66 6f 72 20 |ust moni|tor for |
|00002800| 74 68 69 73 20 63 6f 6e | 64 69 74 69 6f 6e 20 62 |this con|dition b|
|00002810| 65 66 6f 72 65 20 74 72 | 61 6e 73 6d 69 74 74 69 |efore tr|ansmitti|
|00002820| 6e 67 20 61 6e 64 20 61 | 6e 79 20 74 69 6d 65 20 |ng and a|ny time |
|00002830| 74 68 65 20 64 65 76 69 | 63 65 20 69 73 20 74 72 |the devi|ce is tr|
|00002840| 61 6e 73 6d 69 74 74 69 | 6e 67 20 61 6e 64 20 65 |ansmitti|ng and e|
|00002850| 78 70 65 63 74 73 20 74 | 68 65 20 64 61 74 61 20 |xpects t|he data |
|00002860| 6c 69 6e 65 20 74 6f 20 | 62 65 20 6e 65 67 61 74 |line to |be negat|
|00002870| 65 64 2e 20 4f 6e 65 20 | 63 68 65 63 6b 20 70 65 |ed. One |check pe|
|00002880| 72 20 62 69 74 20 63 65 | 6c 6c 20 69 73 20 74 79 |r bit ce|ll is ty|
|00002890| 70 69 63 61 6c 6c 79 20 | 6e 6f 74 20 73 75 66 66 |pically |not suff|
|000028a0| 69 63 69 65 6e 74 2e 20 | 4d 6f 6e 69 74 6f 72 69 |icient. |Monitori|
|000028b0| 6e 67 20 66 6f 72 20 63 | 6f 6c 6c 69 73 69 6f 6e |ng for c|ollision|
|000028c0| 20 73 68 6f 75 6c 64 20 | 62 65 20 61 20 6b 65 79 | should |be a key|
|000028d0| 2c 20 72 65 70 65 74 69 | 74 69 76 65 20 70 61 72 |, repeti|tive par|
|000028e0| 74 20 6f 66 20 74 68 65 | 20 74 72 61 6e 73 6d 69 |t of the| transmi|
|000028f0| 73 73 69 6f 6e 20 70 72 | 6f 63 65 73 73 2e 0d 41 |ssion pr|ocess..A|
|00002900| 44 42 52 65 69 6e 69 74 | 20 63 6c 61 72 69 66 69 |DBReinit| clarifi|
|00002910| 63 61 74 69 6f 6e 0d 57 | 72 69 74 74 65 6e 3a 09 |cation.W|ritten:.|
|00002920| 36 2f 37 2f 39 31 0d 4c | 61 73 74 20 72 65 76 69 |6/7/91.L|ast revi|
|00002930| 65 77 65 64 3a 09 31 30 | 2f 31 35 2f 39 31 0d 41 |ewed:.10|/15/91.A|
|00002940| 44 42 52 65 69 6e 69 74 | 20 64 6f 65 73 6e d5 74 |DBReinit| doesn.t|
|00002950| 20 73 65 65 6d 20 74 6f | 20 77 6f 72 6b 20 65 78 | seem to| work ex|
|00002960| 61 63 74 6c 79 20 61 73 | 20 64 65 73 63 72 69 62 |actly as| describ|
|00002970| 65 64 20 69 6e 20 74 68 | 65 20 41 70 70 6c 65 20 |ed in th|e Apple |
|00002980| 44 65 73 6b 74 6f 70 20 | 42 75 73 20 0d 28 41 44 |Desktop |Bus .(AD|
|00002990| 42 29 20 64 6f 63 75 6d | 65 6e 74 61 74 69 6f 6e |B) docum|entation|
|000029a0| 2e 20 50 6c 65 61 73 65 | 20 63 6c 61 72 69 66 79 |. Please| clarify|
|000029b0| 2e 0d 5f 5f 5f 0d 41 20 | 53 65 6e 64 52 65 73 65 |..___.A |SendRese|
|000029c0| 74 20 63 6f 6d 6d 61 6e | 64 20 62 79 74 65 20 69 |t comman|d byte i|
|000029d0| 73 20 6e 65 76 65 72 20 | 73 65 6e 74 20 61 63 72 |s never |sent acr|
|000029e0| 6f 73 73 20 74 68 65 20 | 62 75 73 2c 20 61 73 20 |oss the |bus, as |
|000029f0| 49 6e 73 69 64 65 20 4d | 61 63 69 6e 74 6f 73 68 |Inside M|acintosh|
|00002a00| 20 61 6e 64 20 6f 74 68 | 65 72 20 64 6f 63 75 6d | and oth|er docum|
|00002a10| 65 6e 74 61 74 69 6f 6e | 20 73 65 65 6d 73 20 74 |entation| seems t|
|00002a20| 6f 20 69 6d 70 6c 79 2e | 20 49 6e 20 66 61 63 74 |o imply.| In fact|
|00002a30| 2c 20 77 68 65 6e 20 74 | 68 65 20 41 44 42 20 4d |, when t|he ADB M|
|00002a40| 61 6e 61 67 65 72 20 69 | 73 20 61 73 6b 65 64 20 |anager i|s asked |
|00002a50| 74 6f 20 53 65 6e 64 52 | 65 73 65 74 2c 20 69 74 |to SendR|eset, it|
|00002a60| 20 61 63 74 75 61 6c 6c | 79 20 69 6e 73 74 72 75 | actuall|y instru|
|00002a70| 63 74 73 20 74 68 65 20 | 41 44 42 20 74 72 61 6e |cts the |ADB tran|
|00002a80| 73 63 65 69 76 65 72 20 | 74 6f 20 61 73 73 65 72 |sceiver |to asser|
|00002a90| 74 20 61 6e 20 47 6c 6f | 62 61 6c 20 52 65 73 65 |t an Glo|bal Rese|
|00002aa0| 74 20 70 75 6c 73 65 2e | 0d 54 68 65 20 54 61 6c |t pulse.|.The Tal|
|00002ab0| 6b 20 52 33 20 73 65 71 | 75 65 6e 63 65 20 61 66 |k R3 seq|uence af|
|00002ac0| 74 65 72 20 61 20 72 65 | 73 65 74 20 69 73 20 61 |ter a re|set is a|
|00002ad0| 73 20 66 6f 6c 6c 6f 77 | 73 3a 20 65 61 63 68 20 |s follow|s: each |
|00002ae0| 6f 66 20 74 68 65 20 31 | 36 20 64 65 76 69 63 65 |of the 1|6 device|
|00002af0| 20 61 64 64 72 65 73 73 | 65 73 20 69 73 20 70 6f | address|es is po|
|00002b00| 6c 6c 65 64 20 6f 6e 63 | 65 2c 20 61 6e 64 20 74 |lled onc|e, and t|
|00002b10| 68 65 6e 20 74 68 65 20 | 41 44 42 20 4d 61 6e 61 |hen the |ADB Mana|
|00002b20| 67 65 72 20 72 65 74 75 | 72 6e 73 20 74 6f 20 74 |ger retu|rns to t|
|00002b30| 68 65 20 61 64 64 72 65 | 73 73 65 73 20 74 68 61 |he addre|sses tha|
|00002b40| 74 20 64 69 64 20 6e 6f | 74 20 74 69 6d 65 20 6f |t did no|t time o|
|00002b50| 75 74 20 28 61 64 64 72 | 65 73 73 65 73 20 77 68 |ut (addr|esses wh|
|00002b60| 69 63 68 20 63 6f 6e 74 | 61 69 6e 20 61 74 20 6c |ich cont|ain at l|
|00002b70| 65 61 73 74 20 6f 6e 65 | 20 64 65 76 69 63 65 29 |east one| device)|
|00002b80| 20 61 6e 64 20 72 65 74 | 72 69 65 73 20 74 68 6f | and ret|ries tho|
|00002b90| 73 65 20 61 64 64 72 65 | 73 73 65 73 20 28 6d 6f |se addre|sses (mo|
|00002ba0| 76 69 6e 67 20 64 65 76 | 69 63 65 73 20 62 65 74 |ving dev|ices bet|
|00002bb0| 77 65 65 6e 20 64 65 66 | 61 75 6c 74 20 61 6e 64 |ween def|ault and|
|00002bc0| 20 74 65 6d 70 6f 72 61 | 72 79 20 61 64 64 72 65 | tempora|ry addre|
|00002bd0| 73 73 65 73 29 20 6d 75 | 6c 74 69 70 6c 65 20 74 |sses) mu|ltiple t|
|00002be0| 69 6d 65 73 20 28 35 30 | 20 69 6e 20 74 68 65 20 |imes (50| in the |
|00002bf0| 63 75 72 72 65 6e 74 20 | 69 6d 70 6c 65 6d 65 6e |current |implemen|
|00002c00| 74 61 74 69 6f 6e 29 20 | 75 6e 74 69 6c 20 69 74 |tation) |until it|
|00002c10| 20 69 73 20 73 61 74 69 | 73 66 69 65 64 20 74 68 | is sati|sfied th|
|00002c20| 61 74 20 64 65 76 69 63 | 65 73 20 68 61 76 65 20 |at devic|es have |
|00002c30| 73 65 70 61 72 61 74 65 | 64 20 70 72 6f 70 65 72 |separate|d proper|
|00002c40| 6c 79 2e 0d 54 68 69 73 | 20 69 6e 69 74 69 61 6c |ly..This| initial|
|00002c50| 69 7a 61 74 69 6f 6e 20 | 74 61 73 6b 20 69 73 20 |ization |task is |
|00002c60| 70 61 74 63 68 65 64 20 | 6f 75 74 20 62 79 20 53 |patched |out by S|
|00002c70| 79 73 74 65 6d 20 36 2e | 30 2e 35 20 61 6e 64 20 |ystem 6.|0.5 and |
|00002c80| 6c 61 74 65 72 2c 20 73 | 6f 20 65 76 65 72 79 20 |later, s|o every |
|00002c90| 6d 61 63 68 69 6e 65 20 | 63 61 6e 20 75 73 65 20 |machine |can use |
|00002ca0| 74 68 65 20 6e 65 77 2c | 20 69 6d 70 72 6f 76 65 |the new,| improve|
|00002cb0| 64 20 41 44 42 20 4d 61 | 6e 61 67 65 72 20 77 68 |d ADB Ma|nager wh|
|00002cc0| 69 63 68 20 64 65 62 75 | 74 65 64 20 77 69 74 68 |ich debu|ted with|
|00002cd0| 20 74 68 65 20 4d 61 63 | 69 6e 74 6f 73 68 20 49 | the Mac|intosh I|
|00002ce0| 49 63 69 20 52 4f 4d 2e | 0d 41 70 70 6c 65 20 44 |Ici ROM.|.Apple D|
|00002cf0| 65 73 6b 74 6f 70 20 42 | 75 73 20 28 41 44 42 29 |esktop B|us (ADB)|
|00002d00| 20 73 74 61 72 74 75 70 | 20 74 69 6d 69 6e 67 0d | startup| timing.|
|00002d10| 57 72 69 74 74 65 6e 3a | 09 31 31 2f 36 2f 39 31 |Written:|.11/6/91|
|00002d20| 0d 4c 61 73 74 20 72 65 | 76 69 65 77 65 64 3a 09 |.Last re|viewed:.|
|00002d30| 31 31 2f 36 2f 39 31 0d | 49 20 6e 65 65 64 20 65 |11/6/91.|I need e|
|00002d40| 78 61 63 74 20 41 70 70 | 6c 65 20 44 65 73 6b 74 |xact App|le Deskt|
|00002d50| 6f 70 20 42 75 73 20 28 | 41 44 42 29 20 73 74 61 |op Bus (|ADB) sta|
|00002d60| 72 74 75 70 20 74 69 6d | 69 6e 67 20 64 61 74 61 |rtup tim|ing data|
|00002d70| 20 66 6f 72 20 65 61 63 | 68 20 4d 61 63 69 6e 74 | for eac|h Macint|
|00002d80| 6f 73 68 20 6d 6f 64 65 | 6c 2e 20 57 68 65 6e 20 |osh mode|l. When |
|00002d90| 64 6f 65 73 20 74 68 65 | 20 41 44 42 20 71 75 65 |does the| ADB que|
|00002da0| 72 79 20 74 6f 20 64 65 | 76 69 63 65 73 20 66 69 |ry to de|vices fi|
|00002db0| 72 73 74 20 67 6f 20 6f | 75 74 20 61 6e 64 20 77 |rst go o|ut and w|
|00002dc0| 68 65 6e 20 64 6f 65 73 | 20 69 74 20 72 65 63 65 |hen does| it rece|
|00002dd0| 69 76 65 20 63 6f 6e 66 | 69 72 6d 61 74 69 6f 6e |ive conf|irmation|
|00002de0| 20 6f 66 20 61 20 64 65 | 76 69 63 65 20 70 72 65 | of a de|vice pre|
|00002df0| 73 65 6e 74 3f 20 57 68 | 65 6e 20 64 6f 65 73 20 |sent? Wh|en does |
|00002e00| 74 68 65 20 46 69 6c 65 | 20 4d 61 6e 61 67 65 72 |the File| Manager|
|00002e10| 20 73 74 61 72 74 20 6c | 6f 61 64 69 6e 67 20 74 | start l|oading t|
|00002e20| 68 65 20 63 6f 6e 74 72 | 6f 6c 20 66 69 6c 65 73 |he contr|ol files|
|00002e30| 3f 20 57 68 61 74 20 74 | 79 70 65 20 6f 66 20 73 |? What t|ype of s|
|00002e40| 69 67 6e 61 6c 20 69 73 | 20 73 65 6e 74 20 61 6e |ignal is| sent an|
|00002e50| 64 20 72 65 63 65 69 76 | 65 64 2d 2d 61 20 70 75 |d receiv|ed--a pu|
|00002e60| 6c 73 65 20 6f 66 20 77 | 68 61 74 20 70 61 72 61 |lse of w|hat para|
|00002e70| 6d 65 74 65 72 73 3f 0d | 5f 5f 5f 0d 49 74 d5 73 |meters?.|___.It.s|
|00002e80| 20 6e 6f 74 20 70 6f 73 | 73 69 62 6c 65 20 74 6f | not pos|sible to|
|00002e90| 20 74 65 6c 6c 20 79 6f | 75 20 77 68 65 6e 20 41 | tell yo|u when A|
|00002ea0| 44 42 20 64 65 76 69 63 | 65 73 20 61 72 65 20 69 |DB devic|es are i|
|00002eb0| 6e 69 74 69 61 6c 69 7a | 65 64 20 61 66 74 65 72 |nitializ|ed after|
|00002ec0| 20 70 6f 77 65 72 2d 75 | 70 20 77 69 74 68 20 61 | power-u|p with a|
|00002ed0| 6e 79 20 61 63 63 75 72 | 61 63 79 2c 20 62 65 63 |ny accur|acy, bec|
|00002ee0| 61 75 73 65 20 69 74 20 | 64 65 70 65 6e 64 73 20 |ause it |depends |
|00002ef0| 6f 6e 20 66 61 63 74 6f | 72 73 20 73 75 63 68 20 |on facto|rs such |
|00002f00| 61 73 20 68 6f 77 20 6d | 75 63 68 20 52 41 4d 20 |as how m|uch RAM |
|00002f10| 69 73 20 69 6e 20 74 68 | 65 20 6d 61 63 68 69 6e |is in th|e machin|
|00002f20| 65 20 61 6e 64 20 77 68 | 61 74 20 6b 69 6e 64 20 |e and wh|at kind |
|00002f30| 6f 66 20 73 63 72 65 65 | 6e 73 20 61 72 65 20 63 |of scree|ns are c|
|00002f40| 6f 6e 6e 65 63 74 65 64 | 20 74 6f 20 69 74 2e 20 |onnected| to it. |
|00002f50| 57 68 65 6e 20 74 68 65 | 20 73 79 73 74 65 6d 20 |When the| system |
|00002f60| 62 65 67 69 6e 73 20 6c | 6f 61 64 69 6e 67 20 63 |begins l|oading c|
|00002f70| 6f 6e 74 72 6f 6c 20 66 | 69 6c 65 73 2c 20 69 74 |ontrol f|iles, it|
|00002f80| d5 73 20 65 76 65 6e 20 | 6d 6f 72 65 20 76 61 72 |.s even |more var|
|00002f90| 69 61 62 6c 65 2c 20 64 | 65 70 65 6e 64 69 6e 67 |iable, d|epending|
|00002fa0| 20 6f 6e 20 74 68 69 6e | 67 73 20 6c 69 6b 65 20 | on thin|gs like |
|00002fb0| 64 69 73 6b 20 73 70 65 | 65 64 73 20 61 6e 64 20 |disk spe|eds and |
|00002fc0| 69 66 20 74 68 65 20 75 | 73 65 72 20 69 73 20 62 |if the u|ser is b|
|00002fd0| 6f 6f 74 69 6e 67 20 6f | 66 66 20 61 20 66 6c 6f |ooting o|ff a flo|
|00002fe0| 70 70 79 2e 20 49 6e 20 | 67 65 6e 65 72 61 6c 2c |ppy. In |general,|
|00002ff0| 20 74 69 6d 69 6e 67 20 | 69 73 73 75 65 73 20 61 | timing |issues a|
|00003000| 72 65 20 64 69 66 66 69 | 63 75 6c 74 20 77 69 74 |re diffi|cult wit|
|00003010| 68 20 74 68 65 20 4d 61 | 63 69 6e 74 6f 73 68 2c |h the Ma|cintosh,|
|00003020| 20 61 73 20 69 74 20 64 | 6f 65 73 6e d5 74 20 65 | as it d|oesn.t e|
|00003030| 76 65 6e 20 61 70 70 72 | 6f 61 63 68 20 62 65 69 |ven appr|oach bei|
|00003040| 6e 67 20 61 20 72 65 61 | 6c 2d 74 69 6d 65 20 6d |ng a rea|l-time m|
|00003050| 61 63 68 69 6e 65 2e 0d | 52 65 67 61 72 64 69 6e |achine..|Regardin|
|00003060| 67 20 74 68 65 20 63 68 | 61 72 61 63 74 65 72 69 |g the ch|aracteri|
|00003070| 73 74 69 63 73 20 6f 66 | 20 74 68 65 20 41 44 42 |stics of| the ADB|
|00003080| 20 73 74 61 72 74 75 70 | 20 73 65 71 75 65 6e 63 | startup| sequenc|
|00003090| 65 2c 20 74 68 65 20 62 | 65 73 74 20 74 68 69 6e |e, the b|est thin|
|000030a0| 67 20 74 6f 20 64 6f 20 | 69 73 20 67 65 74 20 74 |g to do |is get t|
|000030b0| 68 65 20 41 44 42 20 53 | 70 65 63 69 66 69 63 61 |he ADB S|pecifica|
|000030c0| 74 69 6f 6e 20 66 72 6f | 6d 20 41 70 70 6c 65 d5 |tion fro|m Apple.|
|000030d0| 73 20 53 6f 66 74 77 61 | 72 65 20 4c 69 63 65 6e |s Softwa|re Licen|
|000030e0| 73 69 6e 67 3b 20 69 74 | 20 63 6f 6e 74 61 69 6e |sing; it| contain|
|000030f0| 73 20 61 6c 6c 20 74 68 | 65 20 69 6e 66 6f 72 6d |s all th|e inform|
|00003100| 61 74 69 6f 6e 20 79 6f | 75 20 6e 65 65 64 20 28 |ation yo|u need (|
|00003110| 61 6c 6f 6e 67 20 77 69 | 74 68 20 49 6e 73 69 64 |along wi|th Insid|
|00003120| 65 20 4d 61 63 69 6e 74 | 6f 73 68 20 61 6e 64 20 |e Macint|osh and |
|00003130| 74 68 65 20 4d 61 63 69 | 6e 74 6f 73 68 20 48 61 |the Maci|ntosh Ha|
|00003140| 72 64 77 61 72 65 20 52 | 65 66 65 72 65 6e 63 65 |rdware R|eference|
|00003150| 29 20 74 6f 20 62 75 69 | 6c 64 20 61 6e 20 41 44 |) to bui|ld an AD|
|00003160| 42 20 64 65 76 69 63 65 | 2e 0d 4d 75 6c 74 69 70 |B device|..Multip|
|00003170| 6c 65 20 4d 61 63 20 41 | 44 42 20 64 65 76 69 63 |le Mac A|DB devic|
|00003180| 65 73 20 77 69 74 68 20 | 73 61 6d 65 20 6f 72 69 |es with |same ori|
|00003190| 67 69 6e 61 6c 20 61 64 | 64 72 65 73 73 20 26 20 |ginal ad|dress & |
|000031a0| 41 44 42 53 0d 57 72 69 | 74 74 65 6e 3a 09 31 32 |ADBS.Wri|tten:.12|
|000031b0| 2f 31 31 2f 39 31 0d 4c | 61 73 74 20 72 65 76 69 |/11/91.L|ast revi|
|000031c0| 65 77 65 64 3a 09 31 32 | 2f 31 31 2f 39 31 0d 4f |ewed:.12|/11/91.O|
|000031d0| 75 72 20 41 44 42 20 64 | 65 76 69 63 65 20 75 73 |ur ADB d|evice us|
|000031e0| 65 73 20 61 6e 20 27 41 | 44 42 53 27 20 28 37 29 |es an 'A|DBS' (7)|
|000031f0| 20 72 65 73 6f 75 72 63 | 65 2c 20 62 65 63 61 75 | resourc|e, becau|
|00003200| 73 65 20 77 65 20 63 6f | 6e 74 61 63 74 65 64 20 |se we co|ntacted |
|00003210| 53 6f 66 74 77 61 72 65 | 20 4c 69 63 65 6e 73 69 |Software| Licensi|
|00003220| 6e 67 20 61 6e 64 20 77 | 65 72 65 20 61 73 73 69 |ng and w|ere assi|
|00003230| 67 6e 65 64 20 61 20 64 | 65 66 61 75 6c 74 20 61 |gned a d|efault a|
|00003240| 64 64 72 65 73 73 20 6f | 66 20 37 2e 20 49 66 20 |ddress o|f 7. If |
|00003250| 61 6e 6f 74 68 65 72 20 | 64 65 76 65 6c 6f 70 65 |another |develope|
|00003260| 72 d5 73 20 64 65 76 69 | 63 65 20 61 74 20 64 65 |r.s devi|ce at de|
|00003270| 66 61 75 6c 74 20 61 64 | 64 72 65 73 73 20 37 20 |fault ad|dress 7 |
|00003280| 68 61 73 20 61 6e 20 27 | 41 44 42 53 27 20 72 65 |has an '|ADBS' re|
|00003290| 73 6f 75 72 63 65 2c 20 | 68 6f 77 20 77 6f 75 6c |source, |how woul|
|000032a0| 64 20 74 68 65 20 41 44 | 42 20 4d 61 6e 61 67 65 |d the AD|B Manage|
|000032b0| 72 20 68 61 6e 64 6c 65 | 20 74 68 69 73 3f 0d 5f |r handle| this?._|
|000032c0| 5f 5f 0d 54 68 65 20 41 | 44 42 20 4d 61 6e 61 67 |__.The A|DB Manag|
|000032d0| 65 72 20 64 6f 65 73 6e | d5 74 20 68 61 76 65 20 |er doesn|.t have |
|000032e0| 6d 75 63 68 20 74 6f 20 | 73 61 79 20 61 62 6f 75 |much to |say abou|
|000032f0| 74 20 74 68 69 73 2e 20 | 54 68 65 20 52 65 73 6f |t this. |The Reso|
|00003300| 75 72 63 65 20 4d 61 6e | 61 67 65 72 20 64 6f 65 |urce Man|ager doe|
|00003310| 73 6e d5 74 20 61 6c 6c | 6f 77 20 74 77 6f 20 72 |sn.t all|ow two r|
|00003320| 65 73 6f 75 72 63 65 73 | 20 6f 66 20 69 64 65 6e |esources| of iden|
|00003330| 74 69 63 61 6c 20 74 79 | 70 65 20 61 6e 64 20 49 |tical ty|pe and I|
|00003340| 44 20 69 6e 20 74 68 65 | 20 73 61 6d 65 20 72 65 |D in the| same re|
|00003350| 73 6f 75 72 63 65 20 66 | 69 6c 65 2c 20 73 6f 20 |source f|ile, so |
|00003360| 74 68 65 20 73 65 72 76 | 69 63 65 20 72 6f 75 74 |the serv|ice rout|
|00003370| 69 6e 65 73 20 66 6f 72 | 20 74 77 6f 20 64 65 76 |ines for| two dev|
|00003380| 69 63 65 73 20 61 73 20 | 64 65 73 63 72 69 62 65 |ices as |describe|
|00003390| 64 20 63 61 6e 6e 6f 74 | 20 62 65 20 69 6e 73 74 |d cannot| be inst|
|000033a0| 61 6c 6c 65 64 20 69 6e | 20 74 68 65 20 53 79 73 |alled in| the Sys|
|000033b0| 74 65 6d 20 66 69 6c 65 | 20 61 74 20 74 68 65 20 |tem file| at the |
|000033c0| 73 61 6d 65 20 74 69 6d | 65 2e 20 54 68 69 73 20 |same tim|e. This |
|000033d0| 69 73 20 61 20 6c 69 6d | 69 74 61 74 69 6f 6e 20 |is a lim|itation |
|000033e0| 6f 66 20 74 68 65 20 4d | 61 63 69 6e 74 6f 73 68 |of the M|acintosh|
|000033f0| 20 41 70 70 6c 65 20 44 | 65 73 6b 74 6f 70 20 42 | Apple D|esktop B|
|00003400| 75 73 20 69 6d 70 6c 65 | 6d 65 6e 74 61 74 69 6f |us imple|mentatio|
|00003410| 6e 20 77 68 69 63 68 20 | 69 73 20 64 65 73 63 72 |n which |is descr|
|00003420| 69 62 65 64 20 69 6e 20 | 74 68 65 20 4d 61 63 69 |ibed in |the Maci|
|00003430| 6e 74 6f 73 68 20 54 65 | 63 68 6e 69 63 61 6c 20 |ntosh Te|chnical |
|00003440| 4e 6f 74 65 20 d2 53 70 | 61 63 65 20 41 6c 69 65 |Note .Sp|ace Alie|
|00003450| 6e 73 20 41 74 65 20 4d | 79 20 4d 6f 75 73 65 20 |ns Ate M|y Mouse |
|00003460| 28 41 44 42 d1 54 68 65 | 20 55 6e 74 6f 6c 64 20 |(ADB.The| Untold |
|00003470| 53 74 6f 72 79 29 2e d3 | 0d 54 68 65 72 65 20 72 |Story)..|.There r|
|00003480| 65 61 6c 6c 79 20 69 73 | 20 6e 6f 20 77 61 79 20 |eally is| no way |
|00003490| 61 72 6f 75 6e 64 20 74 | 68 69 73 2e 20 53 69 6e |around t|his. Sin|
|000034a0| 63 65 20 61 6c 6c 20 6f | 66 20 74 68 65 20 61 64 |ce all o|f the ad|
|000034b0| 64 72 65 73 73 65 73 20 | 68 61 76 65 20 62 65 65 |dresses |have bee|
|000034c0| 6e 20 61 73 73 69 67 6e | 65 64 20 6d 75 6c 74 69 |n assign|ed multi|
|000034d0| 70 6c 65 20 74 69 6d 65 | 73 20 74 6f 20 76 61 72 |ple time|s to var|
|000034e0| 69 6f 75 73 20 64 65 76 | 65 6c 6f 70 65 72 73 2c |ious dev|elopers,|
|000034f0| 20 6a 75 73 74 20 63 68 | 61 6e 67 69 6e 67 20 79 | just ch|anging y|
|00003500| 6f 75 72 20 64 65 76 69 | 63 65 d5 73 20 61 64 64 |our devi|ce.s add|
|00003510| 72 65 73 73 20 77 69 6c | 6c 20 6e 6f 74 20 73 6f |ress wil|l not so|
|00003520| 6c 76 65 20 74 68 65 20 | 67 65 6e 65 72 61 6c 20 |lve the |general |
|00003530| 70 72 6f 62 6c 65 6d 2e | 20 57 65 20 77 69 73 68 |problem.| We wish|
|00003540| 20 74 68 61 74 20 74 68 | 65 72 65 20 77 61 73 20 | that th|ere was |
|00003550| 61 20 73 6f 6c 75 74 69 | 6f 6e 2c 20 62 75 74 20 |a soluti|on, but |
|00003560| 74 68 69 73 20 73 69 74 | 75 61 74 69 6f 6e 20 69 |this sit|uation i|
|00003570| 73 20 69 6e 68 65 72 65 | 6e 74 20 69 6e 20 74 68 |s inhere|nt in th|
|00003580| 65 20 64 65 73 69 67 6e | 20 6f 66 20 74 68 65 20 |e design| of the |
|00003590| 41 44 42 20 4d 61 6e 61 | 67 65 72 2e 0d 49 66 20 |ADB Mana|ger..If |
|000035a0| 79 6f 75 72 20 70 72 6f | 64 75 63 74 20 68 61 73 |your pro|duct has|
|000035b0| 20 61 6e 20 61 64 64 72 | 65 73 73 20 63 6f 6e 66 | an addr|ess conf|
|000035c0| 6c 69 63 74 20 77 69 74 | 68 20 61 6e 6f 74 68 65 |lict wit|h anothe|
|000035d0| 72 20 74 68 69 72 64 2d | 70 61 72 74 79 20 41 44 |r third-|party AD|
|000035e0| 42 20 64 65 76 69 63 65 | 2c 20 61 20 63 6f 6e 66 |B device|, a conf|
|000035f0| 6c 69 63 74 20 77 68 69 | 63 68 20 69 73 20 69 6d |lict whi|ch is im|
|00003600| 70 61 69 72 69 6e 67 20 | 79 6f 75 72 20 63 75 73 |pairing |your cus|
|00003610| 74 6f 6d 65 72 73 d5 20 | 75 73 65 20 6f 66 20 79 |tomers. |use of y|
|00003620| 6f 75 72 20 64 65 76 69 | 63 65 2c 20 44 54 53 20 |our devi|ce, DTS |
|00003630| 77 69 6c 6c 20 74 72 79 | 20 74 6f 20 68 65 6c 70 |will try| to help|
|00003640| 20 79 6f 75 20 66 69 6e | 64 20 61 20 73 75 69 74 | you fin|d a suit|
|00003650| 61 62 6c 65 20 77 6f 72 | 6b 61 72 6f 75 6e 64 2e |able wor|karound.|
|00003660| 20 41 73 20 66 65 77 20 | 75 73 65 72 73 20 68 61 | As few |users ha|
|00003670| 76 65 20 6d 75 6c 74 69 | 70 6c 65 20 63 75 73 74 |ve multi|ple cust|
|00003680| 6f 6d 20 41 44 42 20 64 | 65 76 69 63 65 73 2c 20 |om ADB d|evices, |
|00003690| 74 68 69 73 20 6c 69 6d | 69 74 61 74 69 6f 6e 20 |this lim|itation |
|000036a0| 69 73 20 67 65 6e 65 72 | 61 6c 6c 79 20 6e 6f 74 |is gener|ally not|
|000036b0| 20 61 20 70 72 6f 62 6c | 65 6d 2e 0d 4c 6f 6f 6b | a probl|em..Look|
|000036c0| 20 66 6f 72 20 6d 75 6c | 74 69 70 6c 65 20 41 44 | for mul|tiple AD|
|000036d0| 42 20 64 65 76 69 63 65 | 20 63 6f 6c 6c 69 73 69 |B device| collisi|
|000036e0| 6f 6e 73 0d 57 72 69 74 | 74 65 6e 3a 09 31 2f 32 |ons.Writ|ten:.1/2|
|000036f0| 33 2f 39 32 0d 4c 61 73 | 74 20 72 65 76 69 65 77 |3/92.Las|t review|
|00003700| 65 64 3a 09 33 2f 32 30 | 2f 39 32 0d 4f 75 72 20 |ed:.3/20|/92.Our |
|00003710| 41 70 70 6c 65 20 44 65 | 73 6b 74 6f 70 20 42 75 |Apple De|sktop Bu|
|00003720| 73 20 28 41 44 42 29 20 | 64 65 76 69 63 65 20 68 |s (ADB) |device h|
|00003730| 61 73 20 70 72 6f 62 6c | 65 6d 73 20 77 69 74 68 |as probl|ems with|
|00003740| 20 41 70 70 6c 65 20 6d | 69 63 65 20 69 6e 20 74 | Apple m|ice in t|
|00003750| 68 65 20 73 65 72 69 61 | 6c 20 6e 75 6d 62 65 72 |he seria|l number|
|00003760| 20 73 65 72 69 65 73 20 | 41 50 78 78 78 78 78 78 | series |APxxxxxx|
|00003770| 78 78 78 78 29 2e 20 41 | 20 6d 6f 75 73 65 20 69 |xxxx). A| mouse i|
|00003780| 6e 20 74 68 69 73 20 73 | 65 72 69 65 73 20 64 6f |n this s|eries do|
|00003790| 65 73 20 6e 6f 74 20 64 | 65 74 65 63 74 20 61 6e |es not d|etect an|
|000037a0| 6f 74 68 65 72 20 6d 6f | 75 73 65 20 63 6c 61 73 |other mo|use clas|
|000037b0| 73 20 64 65 76 69 63 65 | d5 73 20 74 61 6c 6b 20 |s device|.s talk |
|000037c0| 72 65 67 69 73 74 65 72 | 20 33 20 75 6e 64 65 72 |register| 3 under|
|000037d0| 20 61 6c 6c 20 63 6f 6e | 64 69 74 69 6f 6e 73 2e | all con|ditions.|
|000037e0| 20 54 6f 20 65 78 70 6c | 61 69 6e 20 69 6e 20 64 | To expl|ain in d|
|000037f0| 65 74 61 69 6c 3a 20 54 | 68 65 20 6d 6f 75 73 65 |etail: T|he mouse|
|00003800| 20 72 65 73 70 6f 6e 64 | 73 20 32 32 30 20 6d 69 | respond|s 220 mi|
|00003810| 63 72 6f 73 65 63 6f 6e | 64 73 20 61 66 74 65 72 |crosecon|ds after|
|00003820| 20 74 68 65 20 73 74 6f | 70 20 62 69 74 20 6f 66 | the sto|p bit of|
|00003830| 20 74 68 65 20 74 61 6c | 6b 20 72 65 67 69 73 74 | the tal|k regist|
|00003840| 65 72 20 33 20 63 6f 6d | 6d 61 6e 64 2e 20 4f 75 |er 3 com|mand. Ou|
|00003850| 72 20 64 65 76 69 63 65 | 20 72 65 73 70 6f 6e 64 |r device| respond|
|00003860| 73 20 66 72 6f 6d 20 31 | 38 30 20 74 6f 20 31 39 |s from 1|80 to 19|
|00003870| 30 20 6d 69 63 72 6f 73 | 65 63 6f 6e 64 73 20 66 |0 micros|econds f|
|00003880| 72 6f 6d 20 74 68 65 20 | 73 74 6f 70 20 62 69 74 |rom the |stop bit|
|00003890| 2e 20 49 66 20 69 74 20 | 72 65 73 70 6f 6e 64 73 |. If it |responds|
|000038a0| 20 74 6f 20 74 68 65 20 | 74 61 6c 6b 20 72 65 67 | to the |talk reg|
|000038b0| 69 73 74 65 72 20 33 20 | 63 6f 6d 6d 61 6e 64 20 |ister 3 |command |
|000038c0| 6c 61 74 65 72 20 74 68 | 61 6e 20 31 38 33 20 6d |later th|an 183 m|
|000038d0| 69 63 72 6f 73 65 63 6f | 6e 64 73 20 28 66 72 6f |icroseco|nds (fro|
|000038e0| 6d 20 31 38 33 20 74 6f | 20 31 39 30 29 2c 20 6d |m 183 to| 190), m|
|000038f0| 6f 75 73 65 20 64 6f 65 | 73 6e d5 74 20 64 65 74 |ouse doe|sn.t det|
|00003900| 65 63 74 20 74 68 61 74 | 20 61 6e 6f 74 68 65 72 |ect that| another|
|00003910| 20 41 44 42 20 64 65 76 | 69 63 65 20 68 61 73 20 | ADB dev|ice has |
|00003920| 73 74 61 72 74 65 64 20 | 61 20 74 72 61 6e 73 6d |started |a transm|
|00003930| 69 73 73 69 6f 6e 2e 20 | 43 6f 6e 73 65 71 75 65 |ission. |Conseque|
|00003940| 6e 74 6c 79 2c 20 74 68 | 65 20 6d 6f 75 73 65 20 |ntly, th|e mouse |
|00003950| 77 69 6c 6c 20 73 74 61 | 72 74 20 69 74 73 20 6f |will sta|rt its o|
|00003960| 77 6e 20 72 65 73 70 6f | 6e 73 65 20 61 74 20 32 |wn respo|nse at 2|
|00003970| 32 30 20 6d 69 63 72 6f | 73 65 63 6f 6e 64 73 20 |20 micro|seconds |
|00003980| 62 79 20 73 65 74 74 69 | 6e 67 20 74 68 65 20 64 |by setti|ng the d|
|00003990| 61 74 61 20 6c 69 6e 65 | 20 6c 6f 77 2e 20 54 68 |ata line| low. Th|
|000039a0| 69 73 20 68 61 73 20 74 | 68 65 20 65 66 66 65 63 |is has t|he effec|
|000039b0| 74 20 6f 66 20 61 64 64 | 69 6e 67 20 61 6e 20 65 |t of add|ing an e|
|000039c0| 78 74 72 61 20 31 20 62 | 69 74 20 74 6f 20 74 68 |xtra 1 b|it to th|
|000039d0| 65 20 64 61 74 61 20 73 | 74 72 65 61 6d 20 61 6e |e data s|tream an|
|000039e0| 64 20 74 68 65 20 6d 6f | 75 73 65 20 77 69 6e 64 |d the mo|use wind|
|000039f0| 73 20 75 70 20 77 69 74 | 68 20 61 20 44 65 76 69 |s up wit|h a Devi|
|00003a00| 63 65 20 54 79 70 65 20 | 6f 66 20 30 20 74 6f 20 |ce Type |of 0 to |
|00003a10| 2d 31 32 38 20 61 73 20 | 72 65 70 6f 72 74 65 64 |-128 as |reported|
|00003a20| 20 62 79 20 74 68 65 20 | 41 44 42 4c 69 73 74 65 | by the |ADBListe|
|00003a30| 72 20 61 70 70 6c 69 63 | 61 74 69 6f 6e 2e 20 57 |r applic|ation. W|
|00003a40| 68 61 74 20 69 73 20 74 | 68 65 20 41 70 70 6c 65 |hat is t|he Apple|
|00003a50| 20 61 70 70 72 6f 76 65 | 64 20 77 6f 72 6b 61 72 | approve|d workar|
|00003a60| 6f 75 6e 64 20 66 6f 72 | 20 74 68 69 73 20 63 6f |ound for| this co|
|00003a70| 6e 64 69 74 69 6f 6e 3f | 0d 5f 5f 5f 0d 54 68 65 |ndition?|.___.The|
|00003a80| 20 62 65 73 74 20 77 61 | 79 20 66 6f 72 20 79 6f | best wa|y for yo|
|00003a90| 75 20 74 6f 20 68 61 6e | 64 6c 65 20 61 6e 79 20 |u to han|dle any |
|00003aa0| 70 72 6f 62 6c 65 6d 73 | 20 77 68 69 63 68 20 79 |problems| which y|
|00003ab0| 6f 75 20 68 61 76 65 20 | 77 69 74 68 20 74 68 69 |ou have |with thi|
|00003ac0| 73 20 6d 6f 75 73 65 20 | 69 73 20 74 6f 20 61 6c |s mouse |is to al|
|00003ad0| 77 61 79 73 20 6c 6f 6f | 6b 20 66 6f 72 20 63 6f |ways loo|k for co|
|00003ae0| 6c 6c 69 73 69 6f 6e 73 | 20 28 77 68 69 63 68 20 |llisions| (which |
|00003af0| 79 6f 75 20 73 68 6f 75 | 6c 64 20 64 6f 20 61 6e |you shou|ld do an|
|00003b00| 79 77 61 79 29 2e 20 49 | 66 20 79 6f 75 20 64 65 |yway). I|f you de|
|00003b10| 74 65 63 74 20 61 20 63 | 6f 6c 6c 69 73 69 6f 6e |tect a c|ollision|
|00003b20| 2c 20 6c 65 74 20 67 6f | 20 6f 66 20 74 68 65 20 |, let go| of the |
|00003b30| 62 75 73 2e 20 54 68 69 | 73 20 77 61 79 2c 20 79 |bus. Thi|s way, y|
|00003b40| 6f 75 72 20 70 72 6f 64 | 75 63 74 20 77 69 6c 6c |our prod|uct will|
|00003b50| 20 69 6e 20 74 68 65 20 | 65 6e 64 20 77 6f 72 6b | in the |end work|
|00003b60| 20 62 65 74 74 65 72 20 | 74 68 61 6e 20 74 68 65 | better |than the|
|00003b70| 20 6d 6f 75 73 65 20 61 | 6e 64 20 6e 6f 74 20 67 | mouse a|nd not g|
|00003b80| 65 74 20 6d 6f 76 65 64 | 20 61 72 6f 75 6e 64 2c |et moved| around,|
|00003b90| 20 6c 69 6b 65 20 74 68 | 65 20 6d 6f 75 73 65 20 | like th|e mouse |
|00003ba0| 77 69 6c 6c 2e 20 45 76 | 65 6e 20 69 66 20 79 6f |will. Ev|en if yo|
|00003bb0| 75 20 61 72 65 20 69 6e | 20 74 68 65 20 6d 69 64 |u are in| the mid|
|00003bc0| 64 6c 65 20 6f 66 20 61 | 20 74 72 61 6e 73 61 63 |dle of a| transac|
|00003bd0| 74 69 6f 6e 2c 20 79 6f | 75 20 73 68 6f 75 6c 64 |tion, yo|u should|
|00003be0| 20 6a 75 73 74 20 6c 65 | 74 20 67 6f 20 6f 66 20 | just le|t go of |
|00003bf0| 74 68 65 20 62 75 73 2e | 0d 50 6f 77 65 72 42 6f |the bus.|.PowerBo|
|00003c00| 6f 6b 20 31 34 30 20 26 | 20 31 37 30 20 41 44 42 |ok 140 &| 170 ADB|
|00003c10| 20 6c 6f 77 2d 6c 65 76 | 65 6c 20 69 6e 70 75 74 | low-lev|el input|
|00003c20| 20 76 6f 6c 74 61 67 65 | 20 6d 61 78 69 6d 75 6d | voltage| maximum|
|00003c30| 0d 57 72 69 74 74 65 6e | 3a 09 32 2f 32 30 2f 39 |.Written|:.2/20/9|
|00003c40| 32 0d 4c 61 73 74 20 72 | 65 76 69 65 77 65 64 3a |2.Last r|eviewed:|
|00003c50| 09 34 2f 32 32 2f 39 32 | 0d 4f 75 72 20 41 44 42 |.4/22/92|.Our ADB|
|00003c60| 20 28 41 70 70 6c 65 20 | 44 65 73 6b 74 6f 70 20 | (Apple |Desktop |
|00003c70| 42 75 73 29 20 64 65 76 | 69 63 65 20 77 6f 72 6b |Bus) dev|ice work|
|00003c80| 73 20 6f 6e 20 61 6c 6c | 20 4d 61 63 69 6e 74 6f |s on all| Macinto|
|00003c90| 73 68 20 6d 6f 64 65 6c | 73 20 65 78 63 65 70 74 |sh model|s except|
|00003ca0| 20 6f 75 72 20 50 6f 77 | 65 72 42 6f 6f 6b 20 31 | our Pow|erBook 1|
|00003cb0| 37 30 2e 20 41 72 65 20 | 74 68 65 72 65 20 61 6e |70. Are |there an|
|00003cc0| 79 20 50 6f 77 65 72 42 | 6f 6f 6b 20 41 44 42 20 |y PowerB|ook ADB |
|00003cd0| 63 68 61 6e 67 65 73 3f | 0d 5f 5f 5f 0d 4f 6e 20 |changes?|.___.On |
|00003ce0| 74 68 65 20 65 61 72 6c | 79 20 50 6f 77 65 72 42 |the earl|y PowerB|
|00003cf0| 6f 6f 6b 20 31 34 30 20 | 61 6e 64 20 31 37 30 20 |ook 140 |and 170 |
|00003d00| 76 65 72 73 69 6f 6e 73 | 2c 20 74 68 65 20 6d 6f |versions|, the mo|
|00003d10| 75 73 65 20 77 61 73 20 | 6e 6f 74 20 70 72 6f 70 |use was |not prop|
|00003d20| 65 72 6c 79 20 67 72 6f | 75 6e 64 65 64 20 61 6e |erly gro|unded an|
|00003d30| 64 20 61 73 20 61 20 72 | 65 73 75 6c 74 20 74 68 |d as a r|esult th|
|00003d40| 65 20 6c 6f 77 2d 6c 65 | 76 65 6c 20 69 6e 70 75 |e low-le|vel inpu|
|00003d50| 74 20 76 6f 6c 74 61 67 | 65 20 6d 61 78 69 6d 75 |t voltag|e maximu|
|00003d60| 6d 20 77 61 73 20 6e 6f | 74 20 77 69 74 68 69 6e |m was no|t within|
|00003d70| 20 74 68 65 20 30 2e 38 | 20 76 6f 6c 74 20 73 70 | the 0.8| volt sp|
|00003d80| 65 63 2e 20 49 6e 73 74 | 65 61 64 2c 20 69 74 20 |ec. Inst|ead, it |
|00003d90| 77 61 73 20 63 6c 6f 73 | 65 72 20 74 6f 20 31 2e |was clos|er to 1.|
|00003da0| 35 20 76 6f 6c 74 73 2e | 20 53 6f 20 69 66 20 79 |5 volts.| So if y|
|00003db0| 6f 75 72 20 64 65 76 69 | 63 65 20 64 65 70 65 6e |our devi|ce depen|
|00003dc0| 64 73 20 6f 6e 20 74 68 | 65 20 76 6f 6c 74 61 67 |ds on th|e voltag|
|00003dd0| 65 20 62 65 69 6e 67 20 | 77 69 74 68 69 6e 20 74 |e being |within t|
|00003de0| 68 65 20 73 70 65 63 2c | 20 69 74 20 77 69 6c 6c |he spec,| it will|
|00003df0| 20 68 61 76 65 20 70 72 | 6f 62 6c 65 6d 73 20 77 | have pr|oblems w|
|00003e00| 69 74 68 20 74 68 65 73 | 65 20 65 61 72 6c 79 20 |ith thes|e early |
|00003e10| 50 6f 77 65 72 42 6f 6f | 6b 73 2e 20 54 68 69 73 |PowerBoo|ks. This|
|00003e20| 20 70 72 6f 62 6c 65 6d | 20 68 61 73 20 62 65 65 | problem| has bee|
|00003e30| 6e 20 66 69 78 65 64 20 | 6f 6e 20 74 68 65 20 63 |n fixed |on the c|
|00003e40| 75 72 72 65 6e 74 6c 79 | 20 73 68 69 70 70 69 6e |urrently| shippin|
|00003e50| 67 20 6d 61 63 68 69 6e | 65 73 2c 20 62 75 74 20 |g machin|es, but |
|00003e60| 69 66 20 79 6f 75 20 6f | 72 20 6f 6e 65 20 6f 66 |if you o|r one of|
|00003e70| 20 79 6f 75 72 20 75 73 | 65 72 73 20 68 61 73 20 | your us|ers has |
|00003e80| 61 20 70 72 6f 62 6c 65 | 6d 2c 20 61 6e 20 41 70 |a proble|m, an Ap|
|00003e90| 70 6c 65 20 53 65 72 76 | 69 63 65 20 72 65 70 20 |ple Serv|ice rep |
|00003ea0| 77 69 6c 6c 20 6d 61 6b | 65 20 61 20 6d 69 6e 6f |will mak|e a mino|
|00003eb0| 72 20 6d 6f 64 69 66 69 | 63 61 74 69 6f 6e 20 74 |r modifi|cation t|
|00003ec0| 6f 20 74 68 65 20 50 6f | 77 65 72 42 6f 6f 6b 20 |o the Po|werBook |
|00003ed0| 74 6f 20 6d 61 6b 65 20 | 69 74 20 77 6f 72 6b 20 |to make |it work |
|00003ee0| 63 6f 72 72 65 63 74 6c | 79 2e 0d 55 73 69 6e 67 |correctl|y..Using|
|00003ef0| 20 41 44 42 20 74 6f 20 | 61 75 74 6f 20 70 6f 77 | ADB to |auto pow|
|00003f00| 65 72 20 75 70 20 74 68 | 65 20 4d 61 63 69 6e 74 |er up th|e Macint|
|00003f10| 6f 73 68 0d 57 72 69 74 | 74 65 6e 3a 09 31 31 2f |osh.Writ|ten:.11/|
|00003f20| 31 37 2f 38 39 0d 4c 61 | 73 74 20 72 65 76 69 65 |17/89.La|st revie|
|00003f30| 77 65 64 3a 09 31 32 2f | 31 37 2f 38 39 0d 48 6f |wed:.12/|17/89.Ho|
|00003f40| 77 20 63 61 6e 20 49 20 | 6d 61 6b 65 20 6d 79 20 |w can I |make my |
|00003f50| 4d 61 63 69 6e 74 6f 73 | 68 20 49 49 20 6f 72 20 |Macintos|h II or |
|00003f60| 49 49 78 20 70 6f 77 65 | 72 20 75 70 20 61 75 74 |IIx powe|r up aut|
|00003f70| 6f 6d 61 74 69 63 61 6c | 6c 79 20 61 66 74 65 72 |omatical|ly after|
|00003f80| 20 61 20 70 6f 77 65 72 | 20 6f 75 74 61 67 65 3f | a power| outage?|
|00003f90| 0d 5f 5f 5f 0d 54 68 65 | 20 4d 61 63 69 6e 74 6f |.___.The| Macinto|
|00003fa0| 73 68 20 49 49 20 61 6e | 64 20 49 49 78 20 70 6f |sh II an|d IIx po|
|00003fb0| 77 65 72 20 63 61 6e 20 | 62 65 20 74 75 72 6e 65 |wer can |be turne|
|00003fc0| 64 20 6f 6e 20 76 69 61 | 20 74 68 65 20 6b 65 79 |d on via| the key|
|00003fd0| 62 6f 61 72 64 20 74 68 | 72 6f 75 67 68 20 74 68 |board th|rough th|
|00003fe0| 65 20 41 70 70 6c 65 20 | 44 65 73 6b 74 6f 70 20 |e Apple |Desktop |
|00003ff0| 42 75 73 20 70 6f 72 74 | 20 28 41 44 42 29 20 73 |Bus port| (ADB) s|
|00004000| 69 6e 63 65 20 74 68 65 | 20 72 65 73 65 74 20 6b |ince the| reset k|
|00004010| 65 79 20 69 73 20 77 69 | 72 65 64 20 74 6f 20 70 |ey is wi|red to p|
|00004020| 69 6e 20 32 20 6f 66 20 | 74 68 65 20 41 44 42 20 |in 2 of |the ADB |
|00004030| 63 6f 6e 6e 65 63 74 6f | 72 2e 20 57 68 65 6e 20 |connecto|r. When |
|00004040| 79 6f 75 20 70 72 65 73 | 73 20 74 68 69 73 20 6b |you pres|s this k|
|00004050| 65 79 2c 20 69 74 20 70 | 75 6c 6c 73 20 70 69 6e |ey, it p|ulls pin|
|00004060| 20 32 20 74 6f 20 67 72 | 6f 75 6e 64 20 61 6e 64 | 2 to gr|ound and|
|00004070| 20 69 6e 69 74 69 61 74 | 65 73 20 61 20 70 6f 77 | initiat|es a pow|
|00004080| 65 72 2d 6f 6e 20 73 65 | 71 75 65 6e 63 65 2e 20 |er-on se|quence. |
|00004090| 59 6f 75 20 63 61 6e 20 | 65 6d 75 6c 61 74 65 20 |You can |emulate |
|000040a0| 74 68 69 73 20 66 65 61 | 74 75 72 65 20 77 69 74 |this fea|ture wit|
|000040b0| 68 20 61 20 6d 6f 6d 65 | 6e 74 61 72 79 20 73 77 |h a mome|ntary sw|
|000040c0| 69 74 63 68 20 63 6f 6e | 6e 65 63 74 65 64 20 74 |itch con|nected t|
|000040d0| 6f 20 74 68 65 20 41 44 | 42 20 70 6f 72 74 2e 20 |o the AD|B port. |
|000040e0| 4e 6f 74 65 20 74 68 61 | 74 20 74 68 65 20 73 77 |Note tha|t the sw|
|000040f0| 69 74 63 68 20 6f 6e 20 | 74 68 65 20 62 61 63 6b |itch on |the back|
|00004100| 20 70 61 6e 65 6c 20 6f | 66 20 61 20 4d 61 63 69 | panel o|f a Maci|
|00004110| 6e 74 6f 73 68 20 49 49 | 63 78 20 63 61 6e 20 62 |ntosh II|cx can b|
|00004120| 65 20 6c 6f 63 6b 65 64 | 20 69 6e 20 74 68 65 20 |e locked| in the |
|00004130| 4f 6e 20 70 6f 73 69 74 | 69 6f 6e 20 74 6f 20 61 |On posit|ion to a|
|00004140| 75 74 6f 6d 61 74 69 63 | 61 6c 6c 79 20 72 65 73 |utomatic|ally res|
|00004150| 74 61 72 74 20 61 66 74 | 65 72 20 61 20 70 6f 77 |tart aft|er a pow|
|00004160| 65 72 20 6f 75 74 61 67 | 65 2e 0d 41 6e 20 69 64 |er outag|e..An id|
|00004170| 65 61 20 66 6f 72 20 61 | 20 70 6f 77 65 72 2d 6f |ea for a| power-o|
|00004180| 6e 20 63 69 72 63 75 69 | 74 20 77 6f 75 6c 64 20 |n circui|t would |
|00004190| 62 65 20 74 6f 20 68 61 | 76 65 20 61 20 6d 6f 6d |be to ha|ve a mom|
|000041a0| 65 6e 74 61 72 79 20 28 | 6f 6e 65 2d 73 68 6f 74 |entary (|one-shot|
|000041b0| 29 20 72 65 6c 61 79 20 | 70 6f 77 65 72 65 64 20 |) relay |powered |
|000041c0| 62 79 20 74 68 65 20 73 | 61 6d 65 20 6f 75 74 6c |by the s|ame outl|
|000041d0| 65 74 20 74 68 61 74 20 | 70 6f 77 65 72 73 20 74 |et that |powers t|
|000041e0| 68 65 20 6d 61 63 68 69 | 6e 65 20 61 6e 64 20 68 |he machi|ne and h|
|000041f0| 61 76 65 20 74 68 65 20 | 63 6f 6e 74 61 63 74 73 |ave the |contacts|
|00004200| 20 63 6c 6f 73 65 20 70 | 69 6e 20 32 20 6f 66 20 | close p|in 2 of |
|00004210| 74 68 65 20 41 44 42 20 | 63 6f 6e 6e 65 63 74 6f |the ADB |connecto|
|00004220| 72 2e 20 28 57 69 74 68 | 6f 75 74 20 68 61 76 69 |r. (With|out havi|
|00004230| 6e 67 20 74 72 69 65 64 | 20 74 68 69 73 2c 20 49 |ng tried| this, I|
|00004240| 20 61 6d 20 63 6f 6e 63 | 65 72 6e 65 64 20 74 68 | am conc|erned th|
|00004250| 61 74 20 79 6f 75 20 6d | 61 79 20 6e 65 65 64 20 |at you m|ay need |
|00004260| 61 20 64 65 6c 61 79 20 | 62 65 66 6f 72 65 20 74 |a delay |before t|
|00004270| 68 65 20 72 65 6c 61 79 | 20 66 69 72 65 73 20 74 |he relay| fires t|
|00004280| 6f 20 67 69 76 65 20 74 | 68 65 20 41 43 20 74 69 |o give t|he AC ti|
|00004290| 6d 65 20 74 6f 20 73 74 | 61 62 69 6c 69 7a 65 2c |me to st|abilize,|
|000042a0| 20 65 74 63 2e 29 0d 42 | 6f 6f 74 20 74 69 6d 65 | etc.).B|oot time|
|000042b0| 20 41 44 42 20 64 65 76 | 69 63 65 20 61 64 64 72 | ADB dev|ice addr|
|000042c0| 65 73 73 20 63 6f 6e 66 | 6c 69 63 74 20 72 65 73 |ess conf|lict res|
|000042d0| 6f 6c 75 74 69 6f 6e 0d | 57 72 69 74 74 65 6e 3a |olution.|Written:|
|000042e0| 09 31 31 2f 31 37 2f 38 | 39 0d 4c 61 73 74 20 72 |.11/17/8|9.Last r|
|000042f0| 65 76 69 65 77 65 64 3a | 09 31 32 2f 31 37 2f 39 |eviewed:|.12/17/9|
|00004300| 30 0d 49 d5 6d 20 63 6f | 6e 66 75 73 65 64 20 61 |0.I.m co|nfused a|
|00004310| 62 6f 75 74 20 74 68 65 | 20 77 61 79 20 41 70 70 |bout the| way App|
|00004320| 6c 65 20 44 65 73 6b 74 | 6f 70 20 42 75 73 20 28 |le Deskt|op Bus (|
|00004330| 41 44 42 29 20 64 65 76 | 69 63 65 20 61 64 64 72 |ADB) dev|ice addr|
|00004340| 65 73 73 20 63 6f 6e 66 | 6c 69 63 74 73 20 61 72 |ess conf|licts ar|
|00004350| 65 20 72 65 73 6f 6c 76 | 65 64 20 61 74 20 62 6f |e resolv|ed at bo|
|00004360| 6f 74 20 74 69 6d 65 2e | 0d 5f 5f 5f 0d 54 68 65 |ot time.|.___.The|
|00004370| 20 6d 65 74 68 6f 64 20 | 75 73 65 64 20 62 79 20 | method |used by |
|00004380| 74 68 65 20 68 6f 73 74 | 20 74 6f 20 73 65 70 61 |the host| to sepa|
|00004390| 72 61 74 65 20 61 6e 64 | 20 69 64 65 6e 74 69 66 |rate and| identif|
|000043a0| 79 20 74 68 65 20 64 65 | 76 69 63 65 73 20 61 74 |y the de|vices at|
|000043b0| 20 62 6f 6f 74 20 74 69 | 6d 65 20 69 73 20 6e 6f | boot ti|me is no|
|000043c0| 74 20 77 65 6c 6c 20 64 | 6f 63 75 6d 65 6e 74 65 |t well d|ocumente|
|000043d0| 64 2c 20 73 6f 20 49 d5 | 6c 6c 20 74 72 79 20 74 |d, so I.|ll try t|
|000043e0| 6f 20 64 65 73 63 72 69 | 62 65 20 69 74 20 77 69 |o descri|be it wi|
|000043f0| 74 68 20 73 6f 6d 65 20 | 63 6c 61 72 69 74 79 2e |th some |clarity.|
|00004400| 0d 54 68 65 20 68 6f 73 | 74 20 69 73 73 75 65 73 |.The hos|t issues|
|00004410| 20 61 20 54 61 6c 6b 20 | 52 33 20 63 6f 6d 6d 61 | a Talk |R3 comma|
|00004420| 6e 64 20 74 6f 20 61 6e | 20 61 64 64 72 65 73 73 |nd to an| address|
|00004430| 2e 20 4c 65 74 d5 73 20 | 73 61 79 20 74 68 65 72 |. Let.s |say ther|
|00004440| 65 20 61 72 65 20 74 77 | 6f 20 64 65 76 69 63 65 |e are tw|o device|
|00004450| 73 20 61 74 20 74 68 61 | 74 20 61 64 64 72 65 73 |s at tha|t addres|
|00004460| 73 2e 20 42 6f 74 68 20 | 74 72 79 20 74 6f 20 72 |s. Both |try to r|
|00004470| 65 73 70 6f 6e 64 20 74 | 6f 20 74 68 65 20 63 6f |espond t|o the co|
|00004480| 6d 6d 61 6e 64 2c 20 61 | 6e 64 20 77 68 65 6e 20 |mmand, a|nd when |
|00004490| 74 68 65 79 20 74 72 79 | 20 74 6f 20 70 75 74 20 |they try| to put |
|000044a0| 74 68 65 20 72 61 6e 64 | 6f 6d 20 6e 75 6d 62 65 |the rand|om numbe|
|000044b0| 72 20 28 74 68 65 20 61 | 64 64 72 65 73 73 20 66 |r (the a|ddress f|
|000044c0| 69 65 6c 64 20 6f 66 20 | 72 65 67 69 73 74 65 72 |ield of |register|
|000044d0| 20 33 29 20 6f 6e 20 74 | 68 65 20 62 75 73 2c 20 | 3) on t|he bus, |
|000044e0| 6f 6e 65 20 6f 66 20 74 | 68 65 6d 20 73 68 6f 75 |one of t|hem shou|
|000044f0| 6c 64 20 64 65 74 65 63 | 74 20 61 20 63 6f 6c 6c |ld detec|t a coll|
|00004500| 69 73 69 6f 6e 2e 20 54 | 68 65 20 6f 6e 65 20 74 |ision. T|he one t|
|00004510| 68 61 74 20 64 65 74 65 | 63 74 73 20 74 68 65 20 |hat dete|cts the |
|00004520| 63 6f 6c 6c 69 73 69 6f | 6e 20 62 61 63 6b 73 20 |collisio|n backs |
|00004530| 6f 66 66 20 61 6e 64 20 | 6d 61 72 6b 73 20 69 74 |off and |marks it|
|00004540| 73 65 6c 66 20 28 69 6e | 74 65 72 6e 61 6c 6c 79 |self (in|ternally|
|00004550| 29 20 61 73 20 75 6e 6d | 6f 76 61 62 6c 65 2e 0d |) as unm|ovable..|
|00004560| 54 68 65 20 64 65 76 69 | 63 65 20 74 68 61 74 20 |The devi|ce that |
|00004570| 64 69 64 20 72 65 73 70 | 6f 6e 64 20 73 75 63 63 |did resp|ond succ|
|00004580| 65 73 73 66 75 6c 6c 79 | 20 69 73 20 74 68 65 6e |essfully| is then|
|00004590| 20 74 6f 6c 64 20 74 6f | 20 6d 6f 76 65 20 74 6f | told to| move to|
|000045a0| 20 61 20 6e 65 77 20 61 | 64 64 72 65 73 73 20 28 | a new a|ddress (|
|000045b0| 74 68 65 20 68 69 67 68 | 65 73 74 20 66 72 65 65 |the high|est free|
|000045c0| 20 61 64 64 72 65 73 73 | 29 2e 20 42 79 20 64 65 | address|). By de|
|000045d0| 66 69 6e 69 74 69 6f 6e | 2c 20 6d 6f 76 69 6e 67 |finition|, moving|
|000045e0| 20 74 6f 20 61 20 6e 65 | 77 20 61 64 64 72 65 73 | to a ne|w addres|
|000045f0| 73 20 6d 65 61 6e 73 20 | 74 68 61 74 20 69 74 20 |s means |that it |
|00004600| 6e 6f 77 20 72 65 73 70 | 6f 6e 64 73 20 6f 6e 6c |now resp|onds onl|
|00004610| 79 20 74 6f 20 63 6f 6d | 6d 61 6e 64 73 20 61 64 |y to com|mands ad|
|00004620| 64 72 65 73 73 65 64 20 | 74 6f 20 74 68 69 73 20 |dressed |to this |
|00004630| 6e 65 77 20 61 64 64 72 | 65 73 73 2c 20 61 6e 64 |new addr|ess, and|
|00004640| 20 69 74 20 69 67 6e 6f | 72 65 73 20 63 6f 6d 6d | it igno|res comm|
|00004650| 61 6e 64 73 20 74 6f 20 | 74 68 65 20 6f 72 69 67 |ands to |the orig|
|00004660| 69 6e 61 6c 20 61 64 64 | 72 65 73 73 2e 0d 54 68 |inal add|ress..Th|
|00004670| 65 20 68 6f 73 74 20 74 | 68 65 6e 20 69 73 73 75 |e host t|hen issu|
|00004680| 65 73 20 61 6e 6f 74 68 | 65 72 20 54 61 6c 6b 20 |es anoth|er Talk |
|00004690| 52 33 20 63 6f 6d 6d 61 | 6e 64 20 74 6f 20 74 68 |R3 comma|nd to th|
|000046a0| 65 20 6f 72 69 67 69 6e | 61 6c 20 61 64 64 72 65 |e origin|al addre|
|000046b0| 73 73 2e 20 54 68 69 73 | 20 74 69 6d 65 20 74 68 |ss. This| time th|
|000046c0| 65 20 73 65 63 6f 6e 64 | 20 64 65 76 69 63 65 20 |e second| device |
|000046d0| 72 65 73 70 6f 6e 64 73 | 20 77 69 74 68 6f 75 74 |responds| without|
|000046e0| 20 64 65 74 65 63 74 69 | 6e 67 20 61 20 63 6f 6c | detecti|ng a col|
|000046f0| 6c 69 73 69 6f 6e 2e 20 | 57 68 65 6e 20 69 74 20 |lision. |When it |
|00004700| 73 75 63 63 65 73 73 66 | 75 6c 6c 79 20 63 6f 6d |successf|ully com|
|00004710| 70 6c 65 74 65 73 20 61 | 20 54 61 6c 6b 20 52 33 |pletes a| Talk R3|
|00004720| 20 72 65 73 70 6f 6e 73 | 65 2c 20 69 74 20 6d 61 | respons|e, it ma|
|00004730| 72 6b 73 20 69 74 73 65 | 6c 66 20 61 73 20 6d 6f |rks itse|lf as mo|
|00004740| 76 61 62 6c 65 2e 20 49 | 74 20 74 68 65 6e 20 69 |vable. I|t then i|
|00004750| 73 20 74 6f 6c 64 20 74 | 6f 20 6d 6f 76 65 20 74 |s told t|o move t|
|00004760| 6f 20 61 20 6e 65 77 20 | 61 64 64 72 65 73 73 2e |o a new |address.|
|00004770| 0d 54 68 65 20 68 6f 73 | 74 20 61 67 61 69 6e 20 |.The hos|t again |
|00004780| 69 73 73 75 65 73 20 61 | 20 54 61 6c 6b 20 52 33 |issues a| Talk R3|
|00004790| 20 63 6f 6d 6d 61 6e 64 | 20 74 6f 20 74 68 65 20 | command| to the |
|000047a0| 6f 72 69 67 69 6e 61 6c | 20 61 64 64 72 65 73 73 |original| address|
|000047b0| 2e 20 53 69 6e 63 65 20 | 74 68 65 72 65 20 61 72 |. Since |there ar|
|000047c0| 65 20 6e 6f 20 6d 6f 72 | 65 20 64 65 76 69 63 65 |e no mor|e device|
|000047d0| 73 20 61 74 20 74 68 61 | 74 20 61 64 64 72 65 73 |s at tha|t addres|
|000047e0| 73 2c 20 74 68 65 20 62 | 75 73 20 74 69 6d 65 73 |s, the b|us times|
|000047f0| 20 6f 75 74 2c 20 61 6e | 64 20 74 68 65 20 68 6f | out, an|d the ho|
|00004800| 73 74 20 6d 6f 76 65 73 | 20 74 68 65 20 6c 61 73 |st moves| the las|
|00004810| 74 20 64 65 76 69 63 65 | 20 62 61 63 6b 20 74 6f |t device| back to|
|00004820| 20 74 68 65 20 6f 72 69 | 67 69 6e 61 6c 20 61 64 | the ori|ginal ad|
|00004830| 64 72 65 73 73 2e 20 41 | 74 20 74 68 69 73 20 70 |dress. A|t this p|
|00004840| 6f 69 6e 74 2c 20 74 68 | 65 20 68 6f 73 74 20 6d |oint, th|e host m|
|00004850| 6f 76 65 73 20 75 70 20 | 74 6f 20 74 68 65 20 6e |oves up |to the n|
|00004860| 65 78 74 20 61 64 64 72 | 65 73 73 20 74 68 61 74 |ext addr|ess that|
|00004870| 20 68 61 73 20 61 20 64 | 65 76 69 63 65 20 61 6e | has a d|evice an|
|00004880| 64 20 62 65 67 69 6e 73 | 20 74 68 65 20 70 72 6f |d begins| the pro|
|00004890| 63 65 73 73 20 61 6c 6c | 20 6f 76 65 72 2e 0d 47 |cess all| over..G|
|000048a0| 65 6e 65 72 61 6c 6c 79 | 2c 20 77 68 65 6e 20 79 |enerally|, when y|
|000048b0| 6f 75 20 68 61 76 65 20 | 74 72 6f 75 62 6c 65 20 |ou have |trouble |
|000048c0| 73 65 70 61 72 61 74 69 | 6e 67 20 64 65 76 69 63 |separati|ng devic|
|000048d0| 65 73 20 6f 6e 20 74 68 | 65 20 41 44 42 2c 20 69 |es on th|e ADB, i|
|000048e0| 74 20 69 73 20 62 65 63 | 61 75 73 65 20 74 68 65 |t is bec|ause the|
|000048f0| 20 63 6f 6c 6c 69 73 69 | 6f 6e 20 64 65 74 65 63 | collisi|on detec|
|00004900| 74 69 6f 6e 20 64 6f 65 | 73 6e d5 74 20 77 6f 72 |tion doe|sn.t wor|
|00004910| 6b 20 77 65 6c 6c 2e 20 | 49 6e 20 66 61 63 74 2c |k well. |In fact,|
|00004920| 20 74 68 69 73 20 70 72 | 6f 62 6c 65 6d 20 69 73 | this pr|oblem is|
|00004930| 20 65 76 69 64 65 6e 74 | 20 6f 6e 20 41 70 70 6c | evident| on Appl|
|00004940| 65 20 6b 65 79 62 6f 61 | 72 64 73 2e 20 54 68 65 |e keyboa|rds. The|
|00004950| 20 62 75 67 20 69 73 20 | 74 68 61 74 20 74 68 65 | bug is |that the|
|00004960| 20 72 61 6e 64 6f 6d 20 | 6e 75 6d 62 65 72 20 72 | random |number r|
|00004970| 65 74 75 72 6e 65 64 20 | 69 6e 20 52 33 20 69 73 |eturned |in R3 is|
|00004980| 6e d5 74 20 72 65 61 6c | 6c 79 20 61 20 72 61 6e |n.t real|ly a ran|
|00004990| 64 6f 6d 20 6e 75 6d 62 | 65 72 2e 20 53 69 6e 63 |dom numb|er. Sinc|
|000049a0| 65 20 74 68 65 20 6d 69 | 63 72 6f 63 6f 6e 74 72 |e the mi|crocontr|
|000049b0| 6f 6c 6c 65 72 73 20 6f | 6e 20 74 68 65 20 6b 65 |ollers o|n the ke|
|000049c0| 79 62 6f 61 72 64 73 20 | 61 72 65 20 63 6c 6f 63 |yboards |are cloc|
|000049d0| 6b 65 64 20 77 69 74 68 | 20 61 20 63 72 79 73 74 |ked with| a cryst|
|000049e0| 61 6c 2c 20 74 68 65 79 | 20 74 65 6e 64 20 74 6f |al, they| tend to|
|000049f0| 20 67 65 6e 65 72 61 74 | 65 20 74 68 65 20 73 61 | generat|e the sa|
|00004a00| 6d 65 20 d2 72 61 6e 64 | 6f 6d d3 20 6e 75 6d 62 |me .rand|om. numb|
|00004a10| 65 72 2c 20 73 6f 20 77 | 68 65 6e 20 74 68 65 20 |er, so w|hen the |
|00004a20| 73 79 73 74 65 6d 20 61 | 74 74 65 6d 70 74 73 20 |system a|ttempts |
|00004a30| 74 6f 20 73 65 70 61 72 | 61 74 65 20 74 68 65 6d |to separ|ate them|
|00004a40| 20 77 69 74 68 20 61 20 | 54 61 6c 6b 20 52 33 20 | with a |Talk R3 |
|00004a50| 63 6f 6d 6d 61 6e 64 2c | 20 74 68 65 79 20 6e 65 |command,| they ne|
|00004a60| 76 65 72 20 64 65 74 65 | 63 74 20 74 68 65 20 63 |ver dete|ct the c|
|00004a70| 6f 6c 6c 69 73 69 6f 6e | 2e 0d 4f 6e 65 20 70 6f |ollision|..One po|
|00004a80| 73 73 69 62 6c 65 20 73 | 6f 6c 75 74 69 6f 6e 20 |ssible s|olution |
|00004a90| 69 73 20 74 6f 20 75 73 | 65 20 61 20 6c 6f 77 2d |is to us|e a low-|
|00004aa0| 74 6f 6c 65 72 61 6e 63 | 65 20 63 61 70 61 63 69 |toleranc|e capaci|
|00004ab0| 74 6f 72 20 6f 6e 20 74 | 68 65 20 72 65 73 65 74 |tor on t|he reset|
|00004ac0| 20 6c 69 6e 65 20 6f 66 | 20 74 68 65 20 6d 69 63 | line of| the mic|
|00004ad0| 72 6f 63 6f 6e 74 72 6f | 6c 6c 65 72 2c 20 74 68 |rocontro|ller, th|
|00004ae0| 65 72 65 62 79 20 66 6f | 72 63 69 6e 67 20 74 68 |ereby fo|rcing th|
|00004af0| 65 20 74 69 6d 65 20 66 | 72 6f 6d 20 70 6f 77 65 |e time f|rom powe|
|00004b00| 72 20 6f 6e 20 74 6f 20 | 74 68 65 20 74 69 6d 65 |r on to |the time|
|00004b10| 20 72 65 73 65 74 20 69 | 73 20 6e 65 67 61 74 65 | reset i|s negate|
|00004b20| 64 20 74 6f 20 62 65 20 | 66 61 69 72 6c 79 20 72 |d to be |fairly r|
|00004b30| 61 6e 64 6f 6d 2e 20 49 | 6e 20 74 68 69 73 20 77 |andom. I|n this w|
|00004b40| 61 79 2c 20 74 68 65 20 | 6d 69 63 72 6f 63 6f 6e |ay, the |microcon|
|00004b50| 74 72 6f 6c 6c 65 72 20 | 63 61 6e 20 73 74 61 72 |troller |can star|
|00004b60| 74 20 61 20 63 6f 75 6e | 74 20 75 6e 74 69 6c 20 |t a coun|t until |
|00004b70| 69 74 20 72 65 63 65 69 | 76 65 73 20 74 68 65 20 |it recei|ves the |
|00004b80| 66 69 72 73 74 20 54 61 | 6c 6b 20 52 33 20 63 6f |first Ta|lk R3 co|
|00004b90| 6d 6d 61 6e 64 2c 20 61 | 6e 64 20 68 6f 70 65 66 |mmand, a|nd hopef|
|00004ba0| 75 6c 6c 79 20 69 74 20 | 69 73 20 61 20 64 69 66 |ully it |is a dif|
|00004bb0| 66 65 72 65 6e 74 20 6e | 75 6d 62 65 72 20 66 72 |ferent n|umber fr|
|00004bc0| 6f 6d 20 74 68 65 20 6e | 75 6d 62 65 72 20 6f 66 |om the n|umber of|
|00004bd0| 20 61 6e 6f 74 68 65 72 | 20 64 65 76 69 63 65 20 | another| device |
|00004be0| 61 74 20 74 68 65 20 73 | 61 6d 65 20 61 64 64 72 |at the s|ame addr|
|00004bf0| 65 73 73 20 6f 6e 20 74 | 68 65 20 62 75 73 2e 0d |ess on t|he bus..|
|00004c00| 49 66 20 79 6f 75 20 66 | 69 6e 64 20 79 6f 75 72 |If you f|ind your|
|00004c10| 20 64 65 76 69 63 65 20 | 73 68 6f 77 73 20 75 70 | device |shows up|
|00004c20| 20 61 74 20 61 6c 6c 20 | 61 64 64 72 65 73 73 65 | at all |addresse|
|00004c30| 73 2c 20 69 74 20 6d 61 | 79 20 62 65 20 62 65 63 |s, it ma|y be bec|
|00004c40| 61 75 73 65 20 69 74 20 | 69 73 20 72 65 73 70 6f |ause it |is respo|
|00004c50| 6e 64 69 6e 67 20 74 6f | 20 74 68 65 20 6d 6f 76 |nding to| the mov|
|00004c60| 65 20 61 64 64 72 65 73 | 73 20 63 6f 6d 6d 61 6e |e addres|s comman|
|00004c70| 64 20 77 68 65 6e 20 69 | 74 20 73 68 6f 75 6c 64 |d when i|t should|
|00004c80| 20 62 65 20 6d 61 72 6b | 65 64 20 61 73 20 75 6e | be mark|ed as un|
|00004c90| 6d 6f 76 61 62 6c 65 2e | 0d 46 69 6e 61 6c 6c 79 |movable.|.Finally|
|00004ca0| 2c 20 69 66 20 74 68 65 | 20 64 65 76 69 63 65 20 |, if the| device |
|00004cb0| 64 6f 65 73 6e d5 74 20 | 73 68 6f 77 20 75 70 20 |doesn.t |show up |
|00004cc0| 61 74 20 61 6c 6c 2c 20 | 69 74 20 6d 61 79 20 62 |at all, |it may b|
|00004cd0| 65 20 62 65 63 61 75 73 | 65 20 69 74 20 69 73 20 |e becaus|e it is |
|00004ce0| 75 6e 61 62 6c 65 20 74 | 6f 20 72 65 73 70 6f 6e |unable t|o respon|
|00004cf0| 64 20 74 6f 20 74 68 65 | 20 54 61 6c 6b 20 52 33 |d to the| Talk R3|
|00004d00| 20 63 6f 6d 6d 61 6e 64 | 20 61 74 20 62 6f 6f 74 | command| at boot|
|00004d10| 20 74 69 6d 65 20 28 74 | 68 61 74 20 69 73 2c 20 | time (t|hat is, |
|00004d20| 69 74 20 69 73 20 6e 6f | 74 20 61 62 6c 65 20 74 |it is no|t able t|
|00004d30| 6f 20 69 6e 69 74 69 61 | 6c 69 7a 65 20 69 74 73 |o initia|lize its|
|00004d40| 65 6c 66 20 61 6e 64 20 | 73 74 61 72 74 20 77 61 |elf and |start wa|
|00004d50| 74 63 68 69 6e 67 20 74 | 68 65 20 62 75 73 20 69 |tching t|he bus i|
|00004d60| 6e 20 74 69 6d 65 29 2e | 0d 44 69 73 74 69 6e 67 |n time).|.Disting|
|00004d70| 75 69 73 68 69 6e 67 20 | 62 65 74 77 65 65 6e 20 |uishing |between |
|00004d80| 74 77 6f 20 6b 65 79 62 | 6f 61 72 64 73 20 6f 6e |two keyb|oards on|
|00004d90| 20 74 68 65 20 4d 61 63 | 69 6e 74 6f 73 68 0d 57 | the Mac|intosh.W|
|00004da0| 72 69 74 74 65 6e 3a 09 | 35 2f 33 2f 38 39 0d 4c |ritten:.|5/3/89.L|
|00004db0| 61 73 74 20 72 65 76 69 | 65 77 65 64 3a 09 31 32 |ast revi|ewed:.12|
|00004dc0| 2f 31 37 2f 39 30 0d 49 | 20 63 6f 6e 6e 65 63 74 |/17/90.I| connect|
|00004dd0| 65 64 20 74 77 6f 20 6b | 65 79 62 6f 61 72 64 73 |ed two k|eyboards|
|00004de0| 20 74 6f 20 6d 79 20 4d | 61 63 69 6e 74 6f 73 68 | to my M|acintosh|
|00004df0| 2c 20 62 75 74 20 49 20 | 63 61 6e d5 74 20 64 69 |, but I |can.t di|
|00004e00| 73 74 69 6e 67 75 69 73 | 68 20 62 65 74 77 65 65 |stinguis|h betwee|
|00004e10| 6e 20 74 68 65 20 74 77 | 6f 2e 20 48 6f 77 20 63 |n the tw|o. How c|
|00004e20| 61 6e 20 49 20 74 65 6c | 6c 20 77 68 69 63 68 20 |an I tel|l which |
|00004e30| 6b 65 79 62 6f 61 72 64 | 20 61 20 6b 65 79 20 70 |keyboard| a key p|
|00004e40| 72 65 73 73 20 63 61 6d | 65 20 66 72 6f 6d 3f 0d |ress cam|e from?.|
|00004e50| 5f 5f 5f 0d 42 65 63 61 | 75 73 65 20 6f 66 20 61 |___.Beca|use of a|
|00004e60| 20 70 72 6f 62 6c 65 6d | 20 69 6e 20 74 68 65 20 | problem| in the |
|00004e70| 41 70 70 6c 65 20 44 65 | 73 6b 74 6f 70 20 42 75 |Apple De|sktop Bu|
|00004e80| 73 20 28 41 44 42 29 20 | 63 6f 64 65 2c 20 6b 65 |s (ADB) |code, ke|
|00004e90| 79 62 6f 61 72 64 73 20 | 64 6f 20 6e 6f 74 20 61 |yboards |do not a|
|00004ea0| 6c 77 61 79 73 20 63 6f | 72 72 65 63 74 6c 79 20 |lways co|rrectly |
|00004eb0| 72 65 73 6f 6c 76 65 20 | 63 6f 6c 6c 69 73 69 6f |resolve |collisio|
|00004ec0| 6e 73 20 28 6d 75 6c 74 | 69 70 6c 65 20 64 65 76 |ns (mult|iple dev|
|00004ed0| 69 63 65 73 20 6f 66 20 | 74 68 65 20 73 61 6d 65 |ices of |the same|
|00004ee0| 20 74 79 70 65 20 6f 6e | 20 74 68 65 20 62 75 73 | type on| the bus|
|00004ef0| 29 2e 20 54 68 69 73 20 | 70 72 6f 62 6c 65 6d 20 |). This |problem |
|00004f00| 69 73 20 69 6e 20 74 68 | 65 20 6b 65 79 62 6f 61 |is in th|e keyboa|
|00004f10| 72 64 2c 20 6e 6f 74 20 | 69 6e 20 74 68 65 20 4d |rd, not |in the M|
|00004f20| 61 63 69 6e 74 6f 73 68 | 2e 20 46 6f 72 20 73 6f |acintosh|. For so|
|00004f30| 6d 65 20 61 70 70 6c 69 | 63 61 74 69 6f 6e 73 2c |me appli|cations,|
|00004f40| 20 73 69 6d 70 6c 79 20 | 74 72 79 69 6e 67 20 64 | simply |trying d|
|00004f50| 69 66 66 65 72 65 6e 74 | 20 6b 65 79 62 6f 61 72 |ifferent| keyboar|
|00004f60| 64 73 20 75 6e 74 69 6c | 20 79 6f 75 20 66 69 6e |ds until| you fin|
|00004f70| 64 20 74 77 6f 20 74 68 | 61 74 20 61 72 65 20 61 |d two th|at are a|
|00004f80| 73 73 69 67 6e 65 64 20 | 64 69 66 66 65 72 65 6e |ssigned |differen|
|00004f90| 74 20 49 44 73 20 6d 61 | 79 20 62 65 20 61 20 77 |t IDs ma|y be a w|
|00004fa0| 6f 72 6b 61 62 6c 65 20 | 73 6f 6c 75 74 69 6f 6e |orkable |solution|
|00004fb0| 2e 20 41 6e 20 41 70 70 | 6c 65 20 4b 65 79 62 6f |. An App|le Keybo|
|00004fc0| 61 72 64 20 61 6e 64 20 | 61 6e 20 41 70 70 6c 65 |ard and |an Apple|
|00004fd0| 20 45 78 74 65 6e 64 65 | 64 20 4b 65 79 62 6f 61 | Extende|d Keyboa|
|00004fe0| 72 64 20 73 68 6f 75 6c | 64 20 6e 6f 74 20 63 6f |rd shoul|d not co|
|00004ff0| 6c 6c 69 64 65 20 77 68 | 65 6e 20 63 6f 6e 6e 65 |llide wh|en conne|
|00005000| 63 74 65 64 20 6f 6e 20 | 74 68 65 20 73 61 6d 65 |cted on |the same|
|00005010| 20 62 75 73 2e 0d 55 73 | 65 20 6f 66 20 41 70 70 | bus..Us|e of App|
|00005020| 6c 65 d5 73 20 41 44 42 | 20 54 72 61 6e 73 63 65 |le.s ADB| Transce|
|00005030| 69 76 65 72 20 49 43 20 | 66 6f 72 20 63 6f 6d 70 |iver IC |for comp|
|00005040| 6c 65 78 20 73 69 67 6e | 61 6c 20 74 69 6d 69 6e |lex sign|al timin|
|00005050| 67 0d 57 72 69 74 74 65 | 6e 3a 09 33 2f 39 2f 39 |g.Writte|n:.3/9/9|
|00005060| 30 0d 4c 61 73 74 20 72 | 65 76 69 65 77 65 64 3a |0.Last r|eviewed:|
|00005070| 09 31 32 2f 31 37 2f 39 | 30 0d 49 20 77 61 6e 74 |.12/17/9|0.I want|
|00005080| 20 74 6f 20 64 65 73 69 | 67 6e 20 74 68 65 20 6e | to desi|gn the n|
|00005090| 65 78 74 20 62 65 73 74 | 2d 73 65 6c 6c 69 6e 67 |ext best|-selling|
|000050a0| 20 67 72 61 70 68 69 63 | 73 20 70 61 64 20 66 6f | graphic|s pad fo|
|000050b0| 72 20 4d 61 63 69 6e 74 | 6f 73 68 2e 20 49 20 70 |r Macint|osh. I p|
|000050c0| 6c 61 6e 20 74 6f 20 75 | 73 65 20 41 70 70 6c 65 |lan to u|se Apple|
|000050d0| 20 44 65 73 6b 74 6f 70 | 20 42 75 73 20 28 41 44 | Desktop| Bus (AD|
|000050e0| 42 29 2e 20 49 73 20 74 | 68 65 72 65 20 61 20 63 |B). Is t|here a c|
|000050f0| 68 69 70 20 73 65 74 20 | 61 76 61 69 6c 61 62 6c |hip set |availabl|
|00005100| 65 20 74 6f 20 69 6d 70 | 6c 65 6d 65 6e 74 20 74 |e to imp|lement t|
|00005110| 68 65 20 63 6f 6d 70 6c | 65 78 20 73 69 67 6e 61 |he compl|ex signa|
|00005120| 6c 20 74 69 6d 69 6e 67 | 20 6f 66 20 74 68 65 20 |l timing| of the |
|00005130| 41 44 42 20 73 70 65 63 | 69 66 69 63 61 74 69 6f |ADB spec|ificatio|
|00005140| 6e 3f 0d 5f 5f 5f 0d 53 | 6f 72 72 79 2e 20 41 70 |n?.___.S|orry. Ap|
|00005150| 70 6c 65 d5 73 20 41 44 | 42 20 54 72 61 6e 73 63 |ple.s AD|B Transc|
|00005160| 65 69 76 65 72 20 49 43 | 20 69 73 20 70 72 6f 70 |eiver IC| is prop|
|00005170| 72 69 65 74 61 72 79 20 | 61 6e 64 20 6e 6f 74 20 |rietary |and not |
|00005180| 63 75 72 72 65 6e 74 6c | 79 20 66 6f 72 20 73 61 |currentl|y for sa|
|00005190| 6c 65 20 6f 72 20 6c 69 | 63 65 6e 73 69 6e 67 2e |le or li|censing.|
|000051a0| 20 54 68 69 73 20 69 73 | 20 74 68 65 20 67 72 65 | This is| the gre|
|000051b0| 61 74 65 73 74 20 68 75 | 72 64 6c 65 20 69 6e 20 |atest hu|rdle in |
|000051c0| 64 65 73 69 67 6e 69 6e | 67 20 79 6f 75 72 20 6f |designin|g your o|
|000051d0| 77 6e 20 41 44 42 20 64 | 65 76 69 63 65 20 61 6e |wn ADB d|evice an|
|000051e0| 64 20 72 65 71 75 69 72 | 65 73 20 74 68 61 74 20 |d requir|es that |
|000051f0| 79 6f 75 20 69 6d 70 6c | 65 6d 65 6e 74 20 79 6f |you impl|ement yo|
|00005200| 75 72 20 6f 77 6e 20 6c | 6f 67 69 63 20 76 69 61 |ur own l|ogic via|
|00005210| 20 61 20 64 65 64 69 63 | 61 74 65 64 20 70 72 6f | a dedic|ated pro|
|00005220| 63 65 73 73 6f 72 20 6f | 72 20 61 70 70 6c 69 63 |cessor o|r applic|
|00005230| 61 74 69 6f 6e 2d 73 70 | 65 63 69 66 69 63 20 69 |ation-sp|ecific i|
|00005240| 6e 74 65 67 72 61 74 65 | 64 20 63 69 72 63 75 69 |ntegrate|d circui|
|00005250| 74 20 28 41 53 49 43 29 | 2e 0d 5f 41 44 42 4f 70 |t (ASIC)|.._ADBOp|
|00005260| 20 63 61 6c 6c 20 73 65 | 72 76 69 63 65 20 72 6f | call se|rvice ro|
|00005270| 75 74 69 6e 65 73 20 61 | 6e 64 20 64 61 74 61 20 |utines a|nd data |
|00005280| 61 72 65 61 73 0d 57 72 | 69 74 74 65 6e 3a 09 31 |areas.Wr|itten:.1|
|00005290| 2f 2e 31 2f 39 31 0d 4c | 61 73 74 20 72 65 76 69 |/.1/91.L|ast revi|
|000052a0| 65 77 65 64 3a 09 31 2f | 31 2f 39 31 0d 49 20 61 |ewed:.1/|1/91.I a|
|000052b0| 6d 20 63 6f 6e 66 75 73 | 65 64 20 61 62 6f 75 74 |m confus|ed about|
|000052c0| 20 74 68 65 20 73 65 72 | 76 69 63 65 20 72 6f 75 | the ser|vice rou|
|000052d0| 74 69 6e 65 73 20 61 6e | 64 20 64 61 74 61 20 61 |tines an|d data a|
|000052e0| 72 65 61 73 20 70 61 73 | 73 65 64 20 69 6e 20 74 |reas pas|sed in t|
|000052f0| 68 65 20 5f 41 44 42 4f | 70 20 63 61 6c 6c 2e 20 |he _ADBO|p call. |
|00005300| 57 68 61 74 20 64 6f 65 | 73 20 69 74 20 61 6c 6c |What doe|s it all|
|00005310| 20 6d 65 61 6e 3f 0d 5f | 5f 5f 0d 54 68 61 74 d5 | mean?._|__.That.|
|00005320| 73 20 61 20 67 6f 6f 64 | 20 71 75 65 73 74 69 6f |s a good| questio|
|00005330| 6e 2e 0d 20 20 20 20 46 | 55 4e 43 54 49 4f 4e 20 |n.. F|UNCTION |
|00005340| 41 44 42 4f 70 20 28 64 | 61 74 61 3a 50 74 72 3b |ADBOp (d|ata:Ptr;|
|00005350| 20 63 6f 6d 70 52 6f 75 | 74 3a 50 72 6f 63 50 74 | compRou|t:ProcPt|
|00005360| 72 3b 20 62 75 66 66 65 | 72 3a 50 74 72 3b 0d 20 |r; buffe|r:Ptr;. |
|00005370| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00005380| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00005390| 20 20 20 20 20 63 6f 6d | 6d 61 6e 64 4e 75 6d 3a | com|mandNum:|
|000053a0| 49 4e 54 45 47 45 52 29 | 20 3a 20 6f 73 65 72 72 |INTEGER)| : oserr|
|000053b0| 3b 0d 64 61 74 61 20 20 | 20 20 20 20 20 20 69 73 |;.data | is|
|000053c0| 20 61 20 70 6f 69 6e 74 | 65 72 20 74 6f 20 74 68 | a point|er to th|
|000053d0| 65 20 d2 6f 70 74 69 6f | 6e 61 6c 20 64 61 74 61 |e .optio|nal data|
|000053e0| 20 61 72 65 61 2e d3 20 | 54 68 69 73 20 61 72 65 | area.. |This are|
|000053f0| 61 20 69 73 20 70 72 6f | 76 69 64 65 64 20 66 6f |a is pro|vided fo|
|00005400| 72 20 74 68 65 20 75 73 | 65 20 6f 66 20 74 68 65 |r the us|e of the|
|00005410| 20 73 65 72 76 69 63 65 | 20 72 6f 75 74 69 6e 65 | service| routine|
|00005420| 20 28 69 66 20 6e 65 65 | 64 65 64 29 2e 0d 63 6f | (if nee|ded)..co|
|00005430| 6d 70 52 6f 75 74 20 20 | 20 20 69 73 20 61 20 70 |mpRout | is a p|
|00005440| 6f 69 6e 74 65 72 20 74 | 6f 20 74 68 65 20 63 6f |ointer t|o the co|
|00005450| 6d 70 6c 65 74 69 6f 6e | 20 6f 72 20 73 65 72 76 |mpletion| or serv|
|00005460| 69 63 65 20 72 6f 75 74 | 69 6e 65 20 74 6f 20 62 |ice rout|ine to b|
|00005470| 65 20 63 61 6c 6c 65 64 | 20 77 68 65 6e 20 74 68 |e called| when th|
|00005480| 65 20 5f 41 44 42 4f 70 | 20 63 6f 6d 6d 61 6e 64 |e _ADBOp| command|
|00005490| 20 68 61 73 20 62 65 65 | 6e 20 63 6f 6d 70 6c 65 | has bee|n comple|
|000054a0| 74 65 64 2e 20 49 74 20 | 68 61 73 20 74 68 65 20 |ted. It |has the |
|000054b0| 73 61 6d 65 20 6d 65 61 | 6e 69 6e 67 20 61 73 20 |same mea|ning as |
|000054c0| 74 68 65 20 73 65 72 76 | 69 63 65 20 72 6f 75 74 |the serv|ice rout|
|000054d0| 69 6e 65 20 70 61 73 73 | 65 64 20 74 6f 20 74 68 |ine pass|ed to th|
|000054e0| 65 20 20 5f 53 65 74 41 | 44 42 49 6e 66 6f 20 63 |e _SetA|DBInfo c|
|000054f0| 61 6c 6c 2e 0d 62 75 66 | 66 65 72 20 20 20 20 20 |all..buf|fer |
|00005500| 20 69 73 20 61 20 70 6f | 69 6e 74 65 72 20 74 6f | is a po|inter to|
|00005510| 20 61 20 50 61 73 63 61 | 6c 20 73 74 72 69 6e 67 | a Pasca|l string|
|00005520| 2c 20 77 68 69 63 68 20 | 6d 61 79 20 63 6f 6e 74 |, which |may cont|
|00005530| 61 69 6e 20 30 20 74 6f | 20 38 20 62 79 74 65 73 |ain 0 to| 8 bytes|
|00005540| 20 6f 66 20 69 6e 66 6f | 72 6d 61 74 69 6f 6e 2e | of info|rmation.|
|00005550| 20 54 68 65 73 65 20 61 | 72 65 20 74 68 65 20 32 | These a|re the 2|
|00005560| 20 74 6f 20 38 20 62 79 | 74 65 73 20 74 68 61 74 | to 8 by|tes that|
|00005570| 20 61 20 70 61 72 74 69 | 63 75 6c 61 72 20 72 65 | a parti|cular re|
|00005580| 67 69 73 74 65 72 20 6f | 66 20 61 6e 20 41 44 42 |gister o|f an ADB|
|00005590| 20 64 65 76 69 63 65 20 | 69 73 20 63 61 70 61 62 | device |is capab|
|000055a0| 6c 65 20 6f 66 20 73 65 | 6e 64 69 6e 67 20 61 6e |le of se|nding an|
|000055b0| 64 20 72 65 63 65 69 76 | 69 6e 67 2e 0d 63 6f 6d |d receiv|ing..com|
|000055c0| 6d 61 6e 64 4e 75 6d 20 | 20 69 73 20 61 6e 20 69 |mandNum | is an i|
|000055d0| 6e 74 65 67 65 72 20 74 | 68 61 74 20 64 65 73 63 |nteger t|hat desc|
|000055e0| 72 69 62 65 73 20 74 68 | 65 20 63 6f 6d 6d 61 6e |ribes th|e comman|
|000055f0| 64 20 74 6f 20 62 65 20 | 73 65 6e 74 20 6f 76 65 |d to be |sent ove|
|00005600| 72 20 74 68 65 20 62 75 | 73 2e 0d 54 68 65 72 65 |r the bu|s..There|
|00005610| 20 69 73 20 73 6f 6d 65 | 20 63 6f 6e 66 75 73 69 | is some| confusi|
|00005620| 6f 6e 20 6f 76 65 72 20 | 74 68 65 20 77 61 79 20 |on over |the way |
|00005630| 74 68 61 74 20 74 68 65 | 20 63 6f 6d 70 6c 65 74 |that the| complet|
|00005640| 69 6f 6e 20 72 6f 75 74 | 69 6e 65 73 20 61 72 65 |ion rout|ines are|
|00005650| 20 63 61 6c 6c 65 64 20 | 66 72 6f 6d 20 5f 41 44 | called |from _AD|
|00005660| 42 4f 70 2e 20 54 68 69 | 73 20 63 61 6c 6c 69 6e |BOp. Thi|s callin|
|00005670| 67 20 6d 61 79 20 62 65 | 20 64 6f 6e 65 20 69 6e |g may be| done in|
|00005680| 20 6f 6e 65 20 6f 66 20 | 74 68 65 20 66 6f 6c 6c | one of |the foll|
|00005690| 6f 77 69 6e 67 20 74 68 | 72 65 65 20 77 61 79 73 |owing th|ree ways|
|000056a0| 3a 0d 31 2e 20 59 6f 75 | 20 64 6f 20 6e 6f 74 20 |:.1. You| do not |
|000056b0| 77 69 73 68 20 74 6f 20 | 68 61 76 65 20 61 20 63 |wish to |have a c|
|000056c0| 6f 6d 70 6c 65 74 69 6f | 6e 20 72 6f 75 74 69 6e |ompletio|n routin|
|000056d0| 65 20 63 61 6c 6c 65 64 | 2c 20 61 73 20 69 6e 20 |e called|, as in |
|000056e0| 61 20 4c 69 73 74 65 6e | 20 63 6f 6d 6d 61 6e 64 |a Listen| command|
|000056f0| 2e 20 50 61 73 73 20 61 | 20 4e 49 4c 20 70 6f 69 |. Pass a| NIL poi|
|00005700| 6e 74 65 72 20 74 6f 20 | 5f 41 44 42 4f 70 2e 0d |nter to |_ADBOp..|
|00005710| 32 2e 20 59 6f 75 20 77 | 69 73 68 20 74 6f 20 63 |2. You w|ish to c|
|00005720| 61 6c 6c 20 74 68 65 20 | 72 6f 75 74 69 6e 65 20 |all the |routine |
|00005730| 61 6c 72 65 61 64 79 20 | 69 6e 20 75 73 65 20 62 |already |in use b|
|00005740| 79 20 74 68 65 20 73 79 | 73 74 65 6d 20 66 6f 72 |y the sy|stem for|
|00005750| 20 74 68 61 74 20 61 64 | 64 72 65 73 73 20 28 61 | that ad|dress (a|
|00005760| 73 20 69 6e 73 74 61 6c | 6c 65 64 20 62 79 20 5f |s instal|led by _|
|00005770| 53 65 74 41 44 42 49 6e | 66 6f 29 2e 20 43 61 6c |SetADBIn|fo). Cal|
|00005780| 6c 20 5f 47 65 74 41 44 | 42 49 6e 66 6f 20 62 65 |l _GetAD|BInfo be|
|00005790| 66 6f 72 65 20 63 61 6c | 6c 69 6e 67 20 5f 41 44 |fore cal|ling _AD|
|000057a0| 42 4f 70 2c 20 61 6e 64 | 20 70 61 73 73 20 74 68 |BOp, and| pass th|
|000057b0| 65 20 72 6f 75 74 69 6e | 65 20 70 6f 69 6e 74 65 |e routin|e pointe|
|000057c0| 72 20 72 65 74 75 72 6e | 65 64 20 62 79 20 5f 47 |r return|ed by _G|
|000057d0| 65 74 41 44 42 49 6e 66 | 6f 20 74 6f 20 5f 41 44 |etADBInf|o to _AD|
|000057e0| 42 4f 70 2e 0d 33 2e 20 | 59 6f 75 20 77 69 73 68 |BOp..3. |You wish|
|000057f0| 20 74 6f 20 70 72 6f 76 | 69 64 65 20 79 6f 75 72 | to prov|ide your|
|00005800| 20 6f 77 6e 20 63 6f 6d | 70 6c 65 74 69 6f 6e 20 | own com|pletion |
|00005810| 72 6f 75 74 69 6e 65 20 | 61 6e 64 20 64 61 74 61 |routine |and data|
|00005820| 20 61 72 65 61 20 66 6f | 72 20 74 68 65 20 5f 41 | area fo|r the _A|
|00005830| 44 42 4f 70 20 63 61 6c | 6c 2e 20 49 6e 20 74 68 |DBOp cal|l. In th|
|00005840| 69 73 20 63 61 73 65 2c | 20 73 69 6d 70 6c 79 20 |is case,| simply |
|00005850| 70 61 73 73 20 79 6f 75 | 72 20 6f 77 6e 20 70 6f |pass you|r own po|
|00005860| 69 6e 74 65 72 73 20 74 | 6f 20 74 68 65 20 5f 41 |inters t|o the _A|
|00005870| 44 42 4f 70 20 63 61 6c | 6c 2e 0d 52 65 6d 65 6d |DBOp cal|l..Remem|
|00005880| 62 65 72 2c 20 74 68 65 | 72 65 20 72 61 72 65 6c |ber, the|re rarel|
|00005890| 79 20 73 68 6f 75 6c 64 | 20 62 65 20 61 20 72 65 |y should| be a re|
|000058a0| 61 73 6f 6e 20 74 6f 20 | 63 61 6c 6c 20 5f 41 44 |ason to |call _AD|
|000058b0| 42 4f 70 2e 20 4d 6f 73 | 74 20 63 61 73 65 73 20 |BOp. Mos|t cases |
|000058c0| 61 72 65 20 68 61 6e 64 | 6c 65 64 20 62 79 20 74 |are hand|led by t|
|000058d0| 68 65 20 73 79 73 74 65 | 6d d5 73 20 70 6f 6c 6c |he syste|m.s poll|
|000058e0| 69 6e 67 20 61 6e 64 20 | 73 65 72 76 69 63 65 20 |ing and |service |
|000058f0| 72 65 71 75 65 73 74 20 | 6d 65 63 68 61 6e 69 73 |request |mechanis|
|00005900| 6d 2e 20 49 6e 20 74 68 | 65 20 63 61 73 65 73 20 |m. In th|e cases |
|00005910| 77 68 65 72 65 20 69 74 | 20 69 73 20 6e 65 63 65 |where it| is nece|
|00005920| 73 73 61 72 79 20 74 6f | 20 63 61 6c 6c 20 5f 41 |ssary to| call _A|
|00005930| 44 42 4f 70 2c 20 69 74 | 20 73 68 6f 75 6c 64 20 |DBOp, it| should |
|00005940| 6e 6f 74 20 62 65 20 64 | 6f 6e 65 20 69 6e 20 61 |not be d|one in a|
|00005950| 20 70 6f 6c 6c 69 6e 67 | 20 66 61 73 68 69 6f 6e | polling| fashion|
|00005960| 2c 20 62 75 74 20 61 73 | 20 61 20 6d 65 63 68 61 |, but as| a mecha|
|00005970| 6e 69 73 6d 20 6f 66 20 | 74 65 6c 6c 69 6e 67 20 |nism of |telling |
|00005980| 74 68 65 20 64 65 76 69 | 63 65 20 73 6f 6d 65 74 |the devi|ce somet|
|00005990| 68 69 6e 67 20 28 66 6f | 72 20 65 78 61 6d 70 6c |hing (fo|r exampl|
|000059a0| 65 2c 20 63 68 61 6e 67 | 65 20 6d 6f 64 65 73 2c |e, chang|e modes,|
|000059b0| 20 6f 72 20 69 6e 20 74 | 68 65 20 63 61 73 65 20 | or in t|he case |
|000059c0| 6f 66 20 6f 75 72 20 65 | 78 74 65 6e 64 65 64 20 |of our e|xtended |
|000059d0| 6b 65 79 62 6f 61 72 64 | 2c 20 74 75 72 6e 20 6f |keyboard|, turn o|
|000059e0| 6e 20 6f 72 20 6f 66 66 | 20 61 6e 20 4c 45 44 29 |n or off| an LED)|
|000059f0| 2e 0d 55 73 69 6e 67 20 | 74 68 65 20 4c 45 44 73 |..Using |the LEDs|
|00005a00| 20 6f 6e 20 74 68 65 20 | 41 70 70 6c 65 20 45 78 | on the |Apple Ex|
|00005a10| 74 65 6e 64 65 64 20 4b | 65 79 62 6f 61 72 64 0d |tended K|eyboard.|
|00005a20| 57 72 69 74 74 65 6e 3a | 09 35 2f 33 2f 38 39 0d |Written:|.5/3/89.|
|00005a30| 4c 61 73 74 20 72 65 76 | 69 65 77 65 64 3a 09 31 |Last rev|iewed:.1|
|00005a40| 32 2f 31 37 2f 39 30 0d | 48 6f 77 20 63 61 6e 20 |2/17/90.|How can |
|00005a50| 49 20 75 73 65 20 74 68 | 65 20 4c 45 44 73 20 6f |I use th|e LEDs o|
|00005a60| 6e 20 74 68 65 20 41 70 | 70 6c 65 20 45 78 74 65 |n the Ap|ple Exte|
|00005a70| 6e 64 65 64 20 4b 65 79 | 62 6f 61 72 64 3f 0d 5f |nded Key|board?._|
|00005a80| 5f 5f 0d 55 73 69 6e 67 | 20 74 68 65 20 4c 45 44 |__.Using| the LED|
|00005a90| 73 20 6f 6e 20 74 68 65 | 20 65 78 74 65 6e 64 65 |s on the| extende|
|00005aa0| 64 20 6b 65 79 62 6f 61 | 72 64 20 69 6e 76 6f 6c |d keyboa|rd invol|
|00005ab0| 76 65 73 20 74 68 65 20 | 5f 41 44 42 4f 70 20 63 |ves the |_ADBOp c|
|00005ac0| 61 6c 6c 2e 20 4f 6e 63 | 65 20 79 6f 75 20 64 65 |all. Onc|e you de|
|00005ad0| 74 65 72 6d 69 6e 65 20 | 74 68 61 74 20 79 6f 75 |termine |that you|
|00005ae0| 20 68 61 76 65 20 61 6e | 20 65 78 74 65 6e 64 65 | have an| extende|
|00005af0| 64 20 6b 65 79 62 6f 61 | 72 64 20 28 77 69 74 68 |d keyboa|rd (with|
|00005b00| 20 5f 43 6f 75 6e 74 41 | 44 42 73 20 61 6e 64 20 | _CountA|DBs and |
|00005b10| 5f 47 65 74 49 6e 64 41 | 44 42 29 2c 20 74 68 65 |_GetIndA|DB), the|
|00005b20| 6e 20 72 65 67 69 73 74 | 65 72 20 32 20 6f 66 20 |n regist|er 2 of |
|00005b30| 74 68 65 20 65 78 74 65 | 6e 64 65 64 20 6b 65 79 |the exte|nded key|
|00005b40| 62 6f 61 72 64 20 68 61 | 73 20 74 68 65 20 4c 45 |board ha|s the LE|
|00005b50| 44 20 74 6f 67 67 6c 65 | 73 20 69 6e 20 74 68 65 |D toggle|s in the|
|00005b60| 20 6c 6f 77 20 33 20 62 | 69 74 73 2e 0d 54 68 65 | low 3 b|its..The|
|00005b70| 72 65 66 6f 72 65 2c 20 | 79 6f 75 20 77 6f 75 6c |refore, |you woul|
|00005b80| 64 20 64 6f 20 61 20 54 | 61 6c 6b 20 74 6f 20 72 |d do a T|alk to r|
|00005b90| 65 67 69 73 74 65 72 20 | 32 20 74 6f 20 68 61 76 |egister |2 to hav|
|00005ba0| 65 20 74 68 65 20 64 65 | 76 69 63 65 20 73 65 6e |e the de|vice sen|
|00005bb0| 64 20 79 6f 75 20 74 68 | 65 20 63 6f 6e 74 65 6e |d you th|e conten|
|00005bc0| 74 73 20 6f 66 20 72 65 | 67 69 73 74 65 72 20 32 |ts of re|gister 2|
|00005bd0| 2c 20 6d 61 6e 69 70 75 | 6c 61 74 65 20 74 68 65 |, manipu|late the|
|00005be0| 20 6c 6f 77 20 33 20 62 | 69 74 73 20 74 6f 20 73 | low 3 b|its to s|
|00005bf0| 65 74 20 74 68 65 20 4c | 45 44 73 2c 20 61 6e 64 |et the L|EDs, and|
|00005c00| 20 74 68 65 6e 20 70 61 | 73 73 20 74 68 65 20 6d | then pa|ss the m|
|00005c10| 6f 64 69 66 69 65 64 20 | 72 65 67 69 73 74 65 72 |odified |register|
|00005c20| 20 32 20 62 61 63 6b 20 | 74 6f 20 74 68 65 20 64 | 2 back |to the d|
|00005c30| 65 76 69 63 65 20 77 69 | 74 68 20 61 20 4c 69 73 |evice wi|th a Lis|
|00005c40| 74 65 6e 20 74 6f 20 72 | 65 67 69 73 74 65 72 20 |ten to r|egister |
|00005c50| 32 20 63 6f 6d 6d 61 6e | 64 2e 0d 54 68 65 20 41 |2 comman|d..The A|
|00005c60| 70 70 6c 65 20 45 78 74 | 65 6e 64 65 64 20 4b 65 |pple Ext|ended Ke|
|00005c70| 79 62 6f 61 72 64 20 68 | 61 73 20 61 6e 20 49 44 |yboard h|as an ID|
|00005c80| 20 6f 66 20 30 32 20 61 | 6e 64 20 61 20 64 65 76 | of 02 a|nd a dev|
|00005c90| 69 63 65 20 68 61 6e 64 | 6c 65 72 20 49 44 20 6f |ice hand|ler ID o|
|00005ca0| 66 20 30 32 2c 20 77 68 | 69 6c 65 20 74 68 65 20 |f 02, wh|ile the |
|00005cb0| 41 70 70 6c 65 20 53 74 | 61 6e 64 61 72 64 20 4b |Apple St|andard K|
|00005cc0| 65 79 62 6f 61 72 64 20 | 68 61 73 20 61 6e 20 49 |eyboard |has an I|
|00005cd0| 44 20 6f 66 20 30 32 20 | 61 6e 64 20 61 20 64 65 |D of 02 |and a de|
|00005ce0| 76 69 63 65 20 68 61 6e | 64 6c 65 72 20 49 44 20 |vice han|dler ID |
|00005cf0| 6f 66 20 30 31 2e 0d 4e | 6f 74 65 3a 20 41 74 20 |of 01..N|ote: At |
|00005d00| 74 68 69 73 20 70 6f 69 | 6e 74 20 69 74 20 69 73 |this poi|nt it is|
|00005d10| 20 6e 6f 74 20 63 6c 65 | 61 72 20 77 68 61 74 20 | not cle|ar what |
|00005d20| 41 70 70 6c 65 20 68 61 | 73 20 69 6e 20 6d 69 6e |Apple ha|s in min|
|00005d30| 64 20 66 6f 72 20 74 68 | 65 73 65 20 4c 45 44 73 |d for th|ese LEDs|
|00005d40| 2c 20 73 6f 20 79 6f 75 | 20 61 72 65 20 75 73 69 |, so you| are usi|
|00005d50| 6e 67 20 74 68 65 6d 20 | 61 74 20 79 6f 75 72 20 |ng them |at your |
|00005d60| 6f 77 6e 20 72 69 73 6b | 2e 0d 4d 61 63 69 6e 74 |own risk|..Macint|
|00005d70| 6f 73 68 20 61 6e 64 20 | 6d 75 6c 74 69 70 6c 65 |osh and |multiple|
|00005d80| 20 6b 65 79 62 6f 61 72 | 64 20 69 6e 70 75 74 0d | keyboar|d input.|
|00005d90| 57 72 69 74 74 65 6e 3a | 09 31 31 2f 32 37 2f 39 |Written:|.11/27/9|
|00005da0| 31 0d 4c 61 73 74 20 72 | 65 76 69 65 77 65 64 3a |1.Last r|eviewed:|
|00005db0| 09 31 31 2f 32 37 2f 39 | 31 0d 49 73 20 69 74 20 |.11/27/9|1.Is it |
|00005dc0| 70 6f 73 73 69 62 6c 65 | 20 74 6f 20 63 6f 6e 6e |possible| to conn|
|00005dd0| 65 63 74 20 6d 6f 72 65 | 20 74 68 61 6e 20 6f 6e |ect more| than on|
|00005de0| 65 20 6b 65 79 62 6f 61 | 72 64 20 69 6e 74 6f 20 |e keyboa|rd into |
|00005df0| 61 6e 20 41 44 42 20 63 | 68 61 69 6e 20 6f 6e 20 |an ADB c|hain on |
|00005e00| 61 20 4d 61 63 69 6e 74 | 6f 73 68 20 49 49 20 66 |a Macint|osh II f|
|00005e10| 61 6d 69 6c 79 20 63 6f | 6d 70 75 74 65 72 3f 0d |amily co|mputer?.|
|00005e20| 5f 5f 5f 0d 43 6f 6e 6e | 65 63 74 69 6e 67 20 6d |___.Conn|ecting m|
|00005e30| 75 6c 74 69 70 6c 65 20 | 6b 65 79 62 6f 61 72 64 |ultiple |keyboard|
|00005e40| 73 20 69 6e 20 70 61 72 | 61 6c 6c 65 6c 20 73 68 |s in par|allel sh|
|00005e50| 6f 75 6c 64 20 77 6f 72 | 6b 3b 20 68 6f 77 65 76 |ould wor|k; howev|
|00005e60| 65 72 2c 20 61 20 62 75 | 67 20 69 6e 20 6d 61 6e |er, a bu|g in man|
|00005e70| 79 20 65 78 69 73 74 69 | 6e 67 20 6b 65 79 62 6f |y existi|ng keybo|
|00005e80| 61 72 64 73 20 70 72 65 | 76 65 6e 74 73 20 74 68 |ards pre|vents th|
|00005e90| 65 6d 20 66 72 6f 6d 20 | 64 69 73 74 69 6e 67 75 |em from |distingu|
|00005ea0| 69 73 68 69 6e 67 20 74 | 68 65 6d 73 65 6c 76 65 |ishing t|hemselve|
|00005eb0| 73 20 61 74 20 62 6f 6f | 74 20 74 69 6d 65 2e 20 |s at boo|t time. |
|00005ec0| 54 68 65 20 72 65 73 75 | 6c 74 20 69 73 20 74 68 |The resu|lt is th|
|00005ed0| 61 74 20 61 6e 20 61 70 | 70 6c 69 63 61 74 69 6f |at an ap|plicatio|
|00005ee0| 6e 20 68 61 73 20 6e 6f | 20 77 61 79 20 6f 66 20 |n has no| way of |
|00005ef0| 74 65 6c 6c 69 6e 67 20 | 77 68 69 63 68 20 6b 65 |telling |which ke|
|00005f00| 79 62 6f 61 72 64 20 68 | 61 73 20 73 65 6e 74 20 |yboard h|as sent |
|00005f10| 69 6e 70 75 74 2e 20 50 | 61 72 61 6c 6c 65 6c 20 |input. P|arallel |
|00005f20| 69 6e 70 75 74 20 66 72 | 6f 6d 20 6d 75 6c 74 69 |input fr|om multi|
|00005f30| 70 6c 65 20 6b 65 79 62 | 6f 61 72 64 73 20 64 6f |ple keyb|oards do|
|00005f40| 65 73 6e d5 74 20 70 72 | 65 73 65 6e 74 20 61 20 |esn.t pr|esent a |
|00005f50| 70 72 6f 62 6c 65 6d 2c | 20 62 75 74 20 64 69 66 |problem,| but dif|
|00005f60| 66 65 72 65 6e 74 69 61 | 74 69 6e 67 20 69 6e 70 |ferentia|ting inp|
|00005f70| 75 74 20 66 72 6f 6d 20 | 6d 75 6c 74 69 70 6c 65 |ut from |multiple|
|00005f80| 20 6b 65 79 62 6f 61 72 | 64 73 20 6f 66 74 65 6e | keyboar|ds often|
|00005f90| 20 77 6f 6e d5 74 20 77 | 6f 72 6b 2e 20 54 68 69 | won.t w|ork. Thi|
|00005fa0| 73 20 73 69 74 75 61 74 | 69 6f 6e 20 68 61 73 20 |s situat|ion has |
|00005fb0| 69 6d 70 72 6f 76 65 64 | 20 77 69 74 68 20 74 68 |improved| with th|
|00005fc0| 65 20 45 78 74 65 6e 64 | 65 64 20 4b 65 79 62 6f |e Extend|ed Keybo|
|00005fd0| 61 72 64 20 49 49 2e 0d | 49 66 20 79 6f 75 20 6e |ard II..|If you n|
|00005fe0| 65 65 64 20 74 6f 20 64 | 69 66 66 65 72 65 6e 74 |eed to d|ifferent|
|00005ff0| 69 61 74 65 20 6d 75 6c | 74 69 70 6c 65 20 6b 65 |iate mul|tiple ke|
|00006000| 79 62 6f 61 72 64 20 69 | 6e 70 75 74 2c 20 75 73 |yboard i|nput, us|
|00006010| 65 20 74 68 65 20 45 78 | 74 65 6e 64 65 64 20 4b |e the Ex|tended K|
|00006020| 65 79 62 6f 61 72 64 20 | 49 49 20 65 78 63 6c 75 |eyboard |II exclu|
|00006030| 73 69 76 65 6c 79 20 6f | 72 20 6d 69 78 20 79 6f |sively o|r mix yo|
|00006040| 75 72 20 6b 65 79 62 6f | 61 72 64 73 2e 20 41 6c |ur keybo|ards. Al|
|00006050| 74 65 72 6e 61 74 69 76 | 65 6c 79 2c 20 74 68 65 |ternativ|ely, the|
|00006060| 20 4d 61 63 69 6e 74 6f | 73 68 20 63 61 6e 20 61 | Macinto|sh can a|
|00006070| 6c 77 61 79 73 20 64 69 | 73 74 69 6e 67 75 69 73 |lways di|stinguis|
|00006080| 68 20 61 20 73 74 61 6e | 64 61 72 64 20 41 44 42 |h a stan|dard ADB|
|00006090| 20 6b 65 79 62 6f 61 72 | 64 20 66 72 6f 6d 20 6e | keyboar|d from n|
|000060a0| 6f 6e 61 6c 69 6b 65 20 | 6b 65 79 62 6f 61 72 64 |onalike |keyboard|
|000060b0| 73 20 73 75 63 68 20 61 | 73 20 74 68 65 20 41 70 |s such a|s the Ap|
|000060c0| 70 6c 65 20 49 49 47 53 | 20 6b 65 79 62 6f 61 72 |ple IIGS| keyboar|
|000060d0| 64 2e 0d 59 6f 75 20 63 | 61 6e d5 74 20 67 6f 20 |d..You c|an.t go |
|000060e0| 77 72 6f 6e 67 20 62 79 | 20 74 72 79 69 6e 67 2c |wrong by| trying,|
|000060f0| 20 73 6f 20 68 6f 6f 6b | 20 74 68 65 6d 20 75 70 | so hook| them up|
|00006100| 20 61 6e 64 20 73 65 65 | 20 69 66 20 79 6f 75 72 | and see| if your|
|00006110| 20 6e 65 65 64 73 20 61 | 72 65 20 61 64 65 71 75 | needs a|re adequ|
|00006120| 61 74 65 6c 79 20 73 65 | 72 76 65 64 2e 20 49 66 |ately se|rved. If|
|00006130| 20 79 6f 75 20 64 6f 6e | d5 74 20 6e 6f 74 69 63 | you don|.t notic|
|00006140| 65 20 61 6e 79 20 70 72 | 6f 62 6c 65 6d 73 2c 20 |e any pr|oblems, |
|00006150| 74 68 65 6e 20 67 72 65 | 61 74 21 0d 50 6f 77 65 |then gre|at!.Powe|
|00006160| 72 42 6f 6f 6b 20 43 6f | 6e 74 72 6f 6c 20 61 6e |rBook Co|ntrol an|
|00006170| 64 20 43 61 70 73 20 4c | 6f 63 6b 20 6b 65 79 73 |d Caps L|ock keys|
|00006180| 20 63 61 6e d5 74 20 62 | 65 20 72 65 6d 61 70 70 | can.t b|e remapp|
|00006190| 65 64 0d 57 72 69 74 74 | 65 6e 3a 09 31 2f 32 37 |ed.Writt|en:.1/27|
|000061a0| 2f 39 31 0d 4c 61 73 74 | 20 72 65 76 69 65 77 65 |/91.Last| reviewe|
|000061b0| 64 3a 09 32 2f 36 2f 39 | 32 0d 49 73 20 74 68 65 |d:.2/6/9|2.Is the|
|000061c0| 72 65 20 61 6e 79 20 77 | 61 79 20 74 6f 20 6d 61 |re any w|ay to ma|
|000061d0| 6b 65 20 74 68 65 20 43 | 61 70 73 20 4c 6f 63 6b |ke the C|aps Lock|
|000061e0| 20 6b 65 79 20 62 65 68 | 61 76 65 20 61 73 20 69 | key beh|ave as i|
|000061f0| 66 20 69 74 20 77 65 72 | 65 20 74 68 65 20 43 6f |f it wer|e the Co|
|00006200| 6e 74 72 6f 6c 20 6b 65 | 79 20 6f 6e 20 61 20 50 |ntrol ke|y on a P|
|00006210| 6f 77 65 72 42 6f 6f 6b | 20 31 37 30 3f 20 49 d5 |owerBook| 170? I.|
|00006220| 76 65 20 74 72 69 65 64 | 20 70 6c 61 79 69 6e 67 |ve tried| playing|
|00006230| 20 77 69 74 68 20 27 4b | 43 48 52 27 20 72 65 73 | with 'K|CHR' res|
|00006240| 6f 75 72 63 65 73 2c 20 | 62 75 74 20 49 20 63 61 |ources, |but I ca|
|00006250| 6e d5 74 20 67 65 74 20 | 74 68 65 20 43 61 70 73 |n.t get |the Caps|
|00006260| 20 4c 6f 63 6b 20 6b 65 | 79 20 74 6f 20 2a 6e 6f | Lock ke|y to *no|
|00006270| 74 20 62 65 2a 20 61 20 | 73 74 69 63 6b 79 20 63 |t be* a |sticky c|
|00006280| 6f 6e 74 72 6f 6c 20 6b | 65 79 2e 20 54 68 65 20 |ontrol k|ey. The |
|00006290| 50 6f 77 65 72 42 6f 6f | 6b 20 31 37 30 20 69 73 |PowerBoo|k 170 is|
|000062a0| 20 67 72 65 61 74 2c 20 | 65 78 63 65 70 74 20 66 | great, |except f|
|000062b0| 6f 72 20 74 68 65 20 70 | 6c 61 63 65 6d 65 6e 74 |or the p|lacement|
|000062c0| 20 6f 66 20 74 68 65 20 | 43 6f 6e 74 72 6f 6c 20 | of the |Control |
|000062d0| 6b 65 79 2e 0d 5f 5f 5f | 0d 46 6f 72 20 61 20 6c |key..___|.For a l|
|000062e0| 6f 6e 67 20 74 69 6d 65 | 20 74 68 65 20 4d 61 63 |ong time| the Mac|
|000062f0| 69 6e 74 6f 73 68 20 41 | 44 42 20 6b 65 79 62 6f |intosh A|DB keybo|
|00006300| 61 72 64 73 20 61 6c 77 | 61 79 73 20 68 61 64 20 |ards alw|ays had |
|00006310| 61 20 6d 65 63 68 61 6e | 69 63 61 6c 20 43 61 70 |a mechan|ical Cap|
|00006320| 73 20 4c 6f 63 6b 20 6b | 65 79 2c 20 73 6f 20 74 |s Lock k|ey, so t|
|00006330| 68 65 72 65 d5 73 20 6e | 65 76 65 72 20 62 65 65 |here.s n|ever bee|
|00006340| 6e 20 61 6e 79 20 73 70 | 65 63 69 61 6c 20 68 61 |n any sp|ecial ha|
|00006350| 6e 64 6c 69 6e 67 20 6f | 66 20 73 77 69 74 63 68 |ndling o|f switch|
|00006360| 69 6e 67 20 62 65 74 77 | 65 65 6e 20 6b 65 79 63 |ing betw|een keyc|
|00006370| 6f 64 65 73 20 77 68 69 | 6c 65 20 74 68 65 20 43 |odes whi|le the C|
|00006380| 61 70 73 20 4c 6f 63 6b | 20 6b 65 79 20 69 73 20 |aps Lock| key is |
|00006390| 64 6f 77 6e 20 6f 72 20 | 75 70 2e 0d 57 69 74 68 |down or |up..With|
|000063a0| 20 74 68 65 20 69 6e 74 | 72 6f 64 75 63 74 69 6f | the int|roductio|
|000063b0| 6e 20 6f 66 20 74 68 65 | 20 50 6f 77 65 72 42 6f |n of the| PowerBo|
|000063c0| 6f 6b 20 6b 65 79 62 6f | 61 72 64 73 20 77 69 74 |ok keybo|ards wit|
|000063d0| 68 20 6e 6f 6e 6d 65 63 | 68 61 6e 69 63 61 6c 20 |h nonmec|hanical |
|000063e0| 43 61 70 73 20 4c 6f 63 | 6b 20 6b 65 79 73 2c 20 |Caps Loc|k keys, |
|000063f0| 74 68 65 20 50 6f 77 65 | 72 20 4d 61 6e 61 67 65 |the Powe|r Manage|
+--------+-------------------------+-------------------------+--------+--------+
Only 25.0 KB of data is shown above.
