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MacBinary | 1989-11-15 | 6.9 KB | [ TEXT/pdos]
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This file was processed as: MacBinary
(archive/macBinary ).
You can browse this item here: TN.IIGS.039
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MacBinary (archive/macBinary)
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Text File (text/txt)
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MacBinary II, inited, Wed Nov 15 12:34:52 1989, modified Wed Nov 15 12:34:52 1989, creator Apple ProDOS file system, type ASCII, 6449 bytes "TN.IIGS.039" , at 0x19b1 382 bytes resource
default (weak)
99%
file
data
default
74%
TrID
Macintosh plain text (MacBinary)
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25%
TrID
MacBinary 2
default (weak)
100%
siegfried
fmt/1762 MacBinary (II)
default
100%
lsar
MacBinary
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id metadata key value macFileType [ TEXT] macFileCreator [ pdos]
hex view +--------+-------------------------+-------------------------+--------+--------+ |00000000| 00 0b 54 4e 2e 49 49 47 | 53 2e 30 33 39 00 00 00 |..TN.IIG|S.039...| |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 54 45 58 54 70 64 6f | 73 01 00 00 00 00 00 00 |.TEXTpdo|s.......| |00000050| 00 00 00 00 00 19 31 00 | 00 01 7e a1 87 4e bc a1 |......1.|..~..N..| |00000060| 87 4e bc 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |.N......|........| |00000070| 00 00 00 00 00 00 00 00 | 00 00 81 81 4a d1 00 00 |........|....J...| |00000080| 41 70 70 6c 65 20 49 49 | 0d 54 65 63 68 6e 69 63 |Apple II|.Technic| |00000090| 61 6c 20 4e 6f 74 65 73 | 0d 5f 5f 5f 5f 5f 5f 5f |al Notes|._______| |000000a0| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |000000b0| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |000000c0| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |000000d0| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |000000e0| 5f 5f 5f 5f 5f 5f 0d 20 | 20 20 20 20 20 20 20 20 |______. | | |000000f0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | | |00000100| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | | |00000110| 20 20 20 20 20 20 20 20 | 20 44 65 76 65 6c 6f 70 | | Develop| |00000120| 65 72 20 54 65 63 68 6e | 69 63 61 6c 20 53 75 70 |er Techn|ical Sup| |00000130| 70 6f 72 74 0d 0d 0d 41 | 70 70 6c 65 20 49 49 47 |port...A|pple IIG| |00000140| 53 0d 23 33 39 3a 20 20 | 20 20 4d 65 67 61 20 49 |S.#39: | Mega I| |00000150| 49 20 56 69 64 65 6f 20 | 43 6f 75 6e 74 65 72 73 |I Video |Counters| |00000160| 0d 0d 52 65 76 69 73 65 | 64 20 62 79 3a 20 20 20 |..Revise|d by: | |00000170| 20 44 61 76 65 20 4c 79 | 6f 6e 73 20 20 20 20 20 | Dave Ly|ons | |00000180| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | | |00000190| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | | |000001a0| 20 20 20 20 20 20 4a 75 | 6c 79 20 31 39 38 39 0d | Ju|ly 1989.| |000001b0| 57 72 69 74 74 65 6e 20 | 62 79 3a 20 20 20 20 4a |Written |by: J| |000001c0| 2e 20 52 69 63 6b 61 72 | 64 20 20 20 20 20 20 20 |. Rickar|d | |000001d0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | | |000001e0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | | |000001f0| 20 20 20 20 20 4d 61 79 | 20 31 39 38 38 0d 0d 54 | May| 1988..T| |00000200| 68 69 73 20 54 65 63 68 | 6e 69 63 61 6c 20 4e 6f |his Tech|nical No| |00000210| 74 65 20 64 65 73 63 72 | 69 62 65 73 20 74 68 65 |te descr|ibes the| |00000220| 20 4d 65 67 61 20 49 49 | 20 76 69 64 65 6f 20 6f | Mega II| video o| |00000230| 75 74 70 75 74 20 72 65 | 67 69 73 74 65 72 73 2c |utput re|gisters,| |00000240| 20 77 68 69 63 68 20 79 | 6f 75 72 20 0d 61 70 70 | which y|our .app| |00000250| 6c 69 63 61 74 69 6f 6e | 73 20 63 61 6e 20 75 73 |lication|s can us| |00000260| 65 20 74 6f 20 67 65 74 | 20 69 6e 66 6f 72 6d 61 |e to get| informa| |00000270| 74 69 6f 6e 20 61 62 6f | 75 74 20 77 68 65 72 65 |tion abo|ut where| |00000280| 20 74 68 65 20 62 65 61 | 6d 20 69 73 20 6c 6f 63 | the bea|m is loc| |00000290| 61 74 65 64 20 6f 6e 20 | 74 68 65 20 0d 41 70 70 |ated on |the .App| |000002a0| 6c 65 20 49 49 47 53 20 | 64 69 73 70 6c 61 79 2e |le IIGS |display.| |000002b0| 0d 43 68 61 6e 67 65 73 | 20 73 69 6e 63 65 20 4e |.Changes| since N| |000002c0| 6f 76 65 6d 62 65 72 20 | 31 39 38 38 3a 20 20 43 |ovember |1988: C| |000002d0| 6f 72 72 65 63 74 65 64 | 20 64 65 73 63 72 69 70 |orrected| descrip| |000002e0| 74 69 6f 6e 20 6f 66 20 | 77 68 65 6e 20 56 42 4c |tion of |when VBL| |000002f0| 20 62 65 67 69 6e 73 20 | 0d 61 6e 64 20 73 69 6d | begins |.and sim| |00000300| 70 6c 69 66 69 65 64 20 | 65 78 61 6d 70 6c 65 20 |plified |example | |00000310| 63 6f 64 65 20 74 6f 20 | 72 65 61 64 20 74 68 65 |code to |read the| |00000320| 20 73 63 61 6e 20 6c 69 | 6e 65 20 6e 75 6d 62 65 | scan li|ne numbe| |00000330| 72 2e 0d 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |r.._____|________| |00000340| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |00000350| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |00000360| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |00000370| 5f 5f 5f 5f 5f 5f 5f 5f | 5f 5f 5f 5f 5f 5f 5f 5f |________|________| |00000380| 0d 0d 54 68 65 20 4d 65 | 67 61 20 49 49 20 63 6f |..The Me|ga II co| |00000390| 6e 74 72 6f 6c 73 20 76 | 69 64 65 6f 20 74 69 6d |ntrols v|ideo tim| |000003a0| 69 6e 67 20 66 6f 72 20 | 74 68 65 20 41 70 70 6c |ing for |the Appl| |000003b0| 65 20 49 49 47 53 20 77 | 69 74 68 20 61 20 31 36 |e IIGS w|ith a 16| |000003c0| 2d 62 69 74 20 63 6f 75 | 6e 74 65 72 20 0d 73 70 |-bit cou|nter .sp| |000003d0| 6c 69 74 20 69 6e 74 6f | 20 61 20 37 2d 62 69 74 |lit into| a 7-bit| |000003e0| 20 68 6f 72 69 7a 6f 6e | 74 61 6c 20 61 6e 64 20 | horizon|tal and | |000003f0| 61 20 39 2d 62 69 74 20 | 76 65 72 74 69 63 61 6c |a 9-bit |vertical| |00000400| 20 70 61 72 74 20 28 46 | 69 67 75 72 65 20 31 29 | part (F|igure 1)| |00000410| 2e 20 20 54 68 65 20 0d | 63 6f 75 6e 74 65 72 20 |. 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Kee| |000007d0| 70 20 74 68 69 73 20 6c | 6f 63 61 74 69 6f 6e 20 |p this l|ocation | |000007e0| 69 6e 20 0d 6d 69 6e 64 | 20 77 68 65 6e 20 72 65 |in .mind| when re| |000007f0| 61 64 69 6e 67 20 74 68 | 65 20 63 6f 75 6e 74 65 |ading th|e counte| |00000800| 72 73 2e 0d 0d 54 68 65 | 20 73 65 76 65 6e 2d 62 |rs...The| seven-b| |00000810| 69 74 20 68 6f 72 69 7a | 6f 6e 74 61 6c 20 63 6f |it horiz|ontal co| |00000820| 75 6e 74 65 72 20 73 74 | 61 72 74 73 20 61 74 20 |unter st|arts at | |00000830| 24 30 30 20 61 6e 64 20 | 63 6f 75 6e 74 73 20 66 |$00 and |counts f| |00000840| 72 6f 6d 20 24 34 30 20 | 74 6f 20 24 37 46 20 28 |rom $40 |to $7F (| |00000850| 74 68 65 20 0d 73 65 71 | 75 65 6e 63 65 20 69 73 |the .seq|uence is| |00000860| 20 24 30 30 2c 20 24 34 | 30 2c 20 24 34 31 2c 2e | $00, $4|0, $41,.| |00000870| 2e 2e 2c 24 37 45 2c 20 | 24 37 46 2c 20 24 30 30 |..,$7E, |$7F, $00| |00000880| 2c 20 24 34 30 2c 2e 2e | 2e 29 2e 20 20 54 68 65 |, $40,..|.). The| |00000890| 20 61 63 74 69 76 65 20 | 76 69 64 65 6f 20 74 69 | active |video ti| |000008a0| 6d 65 20 0d 63 6f 6e 73 | 69 73 74 73 20 6f 66 20 |me .cons|ists of | |000008b0| 34 30 20 6f 6e 65 20 6d | 69 63 72 6f 73 65 63 6f |40 one m|icroseco| |000008c0| 6e 64 20 63 6c 6f 63 6b | 20 63 79 63 6c 65 73 20 |nd clock| cycles | |000008d0| 73 74 61 72 74 69 6e 67 | 20 77 69 74 68 20 24 35 |starting| with $5| |000008e0| 38 20 61 6e 64 20 65 6e | 64 69 6e 67 0d 77 69 74 |8 and en|ding.wit| |000008f0| 68 20 24 37 46 2e 20 20 | 53 69 6e 63 65 20 74 68 |h $7F. |Since th| |00000900| 69 73 20 63 6f 75 6e 74 | 20 63 68 61 6e 67 65 73 |is count| changes| |00000910| 20 61 74 20 39 38 30 20 | 6e 61 6e 6f 73 65 63 6f | at 980 |nanoseco| |00000920| 6e 64 20 69 6e 74 65 72 | 76 61 6c 73 2c 20 69 74 |nd inter|vals, it| |00000930| 20 77 69 6c 6c 0d 70 72 | 6f 62 61 62 6c 79 20 62 | will.pr|obably b| |00000940| 65 20 6f 66 20 6c 69 74 | 74 6c 65 20 75 73 65 20 |e of lit|tle use | |00000950| 74 6f 20 6d 6f 73 74 20 | 70 72 6f 67 72 61 6d 73 |to most |programs| |00000960| 2e 0d 0d 54 68 65 20 6e | 69 6e 65 2d 62 69 74 20 |...The n|ine-bit | |00000970| 76 65 72 74 69 63 61 6c | 20 63 6f 75 6e 74 65 72 |vertical| counter| |00000980| 20 72 61 6e 67 65 73 20 | 66 72 6f 6d 20 24 46 41 | ranges |from $FA| |00000990| 20 74 68 72 6f 75 67 68 | 20 24 31 46 46 20 28 32 | through| $1FF (2| |000009a0| 35 30 20 74 68 72 6f 75 | 67 68 20 35 31 31 29 20 |50 throu|gh 511) | |000009b0| 0d 69 6e 20 4e 54 53 43 | 20 6d 6f 64 65 20 28 76 |.in NTSC| mode (v| |000009c0| 65 72 74 69 63 61 6c 20 | 6c 69 6e 65 20 63 6f 75 |ertical |line cou| |000009d0| 6e 74 20 6f 66 20 32 36 | 32 29 20 61 6e 64 20 66 |nt of 26|2) and f| |000009e0| 72 6f 6d 20 24 43 38 20 | 74 68 72 6f 75 67 68 20 |rom $C8 |through | |000009f0| 24 31 46 46 20 28 32 30 | 30 20 0d 74 68 72 6f 75 |$1FF (20|0 .throu| |00000a00| 67 68 20 35 31 31 29 20 | 69 6e 20 50 41 4c 20 76 |gh 511) |in PAL v| |00000a10| 69 64 65 6f 20 74 69 6d | 69 6e 67 20 6d 6f 64 65 |ideo tim|ing mode| |00000a20| 20 28 76 65 72 74 69 63 | 61 6c 20 6c 69 6e 65 20 | (vertic|al line | |00000a30| 63 6f 75 6e 74 20 6f 66 | 20 33 31 32 29 2e 20 20 |count of| 312). | |00000a40| 56 65 72 74 69 63 61 6c | 20 0d 63 6f 75 6e 74 65 |Vertical| .counte| |00000a50| 72 20 76 61 6c 75 65 20 | 24 31 30 30 20 63 6f 72 |r value |$100 cor| |00000a60| 72 65 73 70 6f 6e 64 73 | 20 74 6f 20 73 63 61 6e |responds| to scan| |00000a70| 20 6c 69 6e 65 20 7a 65 | 72 6f 20 69 6e 20 4e 54 | line ze|ro in NT| |00000a80| 53 43 20 6d 6f 64 65 2e | 20 20 54 68 65 20 76 65 |SC mode.| The ve| |00000a90| 72 74 69 63 61 6c 20 0d | 63 6f 75 6e 74 20 63 68 |rtical .|count ch| |00000aa0| 61 6e 67 65 73 20 61 74 | 20 36 33 2e 37 20 6d 69 |anges at| 63.7 mi| |00000ab0| 63 72 6f 73 65 63 6f 6e | 64 20 69 6e 74 65 72 76 |crosecon|d interv| |00000ac0| 61 6c 73 2c 20 67 69 76 | 69 6e 67 20 61 20 70 72 |als, giv|ing a pr| |00000ad0| 6f 67 72 61 6d 20 74 69 | 6d 65 20 74 6f 20 72 65 |ogram ti|me to re| |00000ae0| 73 70 6f 6e 64 0d 74 6f | 20 61 20 73 70 65 63 69 |spond.to| a speci| |00000af0| 66 69 63 20 63 6f 75 6e | 74 20 62 65 66 6f 72 65 |fic coun|t before| |00000b00| 20 69 74 20 63 68 61 6e | 67 65 73 2e 20 20 54 68 | it chan|ges. 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