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This file was processed as: ARJ Archive
(archive/arj).
| Confidence | Program | Detection | Match Type | Support
|
|---|
| 100%
| dexvert
| ARJ Archive (archive/arj)
| magic
| Supported |
| 100%
| file
| ARJ archive data, v6, slash-switched, created 22 jul 1980+17, original name: ASM_N_Z.ARJ, os: MS-DOS
| default
| |
| 99%
| file
| data
| default
| |
| 66%
| TrID
| ARJ compressed archive (standard)
| default
| |
| 33%
| TrID
| ARJ compressed archive
| default
| |
| 100%
| dearkID
| deark: arj (ARJ)
| default
| |
| 100%
| siegfried
| fmt/610 ARJ File Format
| default
| |
| 100%
| lsar
| ARJ
| default
| |
| 100%
| gt2
| ARJ Archiv gefunden (Auflistung ist deaktiviert)
| default
| |
| 100%
| detectItEasy
| Archive: ARJ(6)
| default
| |
| 100%
| binwalkID
| ARJ archive data, header size: 132, version 6, minimum version to extract: 1, slash-switched, compression method: stored, file type: comment header, original name: "ASM_N_Z.ARJ", original file date: 1988-08-03 03:31:00, compressed file size: 586582260, uncompressed file size: 0, os: MS-DOS
| default
| |
| 100%
| xdgMime
| application/x-arj
| default
|
|
hex view+--------+-------------------------+-------------------------+--------+--------+
|00000000| 60 ea 84 00 1e 06 01 00 | 10 00 02 f4 f4 88 f6 22 |`.......|......."|
|00000010| f4 88 f6 22 00 00 00 00 | 00 00 00 00 00 00 00 00 |..."....|........|
|00000020| 00 00 41 53 4d 5f 4e 5f | 5a 2e 41 52 4a 00 0a 20 |..ASM_N_|Z.ARJ.. |
|00000030| 20 20 20 41 72 63 68 69 | 76 65 20 46 72 6f 6d 0a | Archi|ve From.|
|00000040| 20 48 20 41 20 43 20 4b | 20 45 20 52 27 73 20 20 | H A C K| E R's |
|00000050| 20 43 20 44 0a 20 20 20 | 20 20 43 72 65 61 74 65 | C D. | Create|
|00000060| 64 20 42 79 0a 20 20 57 | 68 69 74 65 20 45 61 67 |d By. W|hite Eag|
|00000070| 6c 65 20 5b 52 43 44 5d | 0a 20 20 20 20 20 20 20 |le [RCD]|. |
|00000080| 20 31 39 39 37 0a 0a 00 | 8d c2 b5 de 00 00 60 ea | 1997...|......`.|
|00000090| 2b 00 1e 06 01 00 10 00 | 00 f4 69 a7 a5 0e 00 48 |+.......|..i....H|
|000000a0| 00 00 00 48 00 00 dd 00 | 66 70 00 00 20 00 00 00 |...H....|fp.. ...|
|000000b0| 4e 45 57 49 4e 49 54 2e | 41 53 4d 00 00 1b 4b b8 |NEWINIT.|ASM...K.|
|000000c0| 99 00 00 74 69 74 6c 65 | 20 6e 65 77 69 6e 69 74 |...title| newinit|
|000000d0| 2e 61 73 6d 0d 0a 63 6f | 6d 6d 65 6e 74 20 7c 2d |.asm..co|mment |-|
|000000e0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000000f0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000100| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000110| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 0d 0a 49 |--------|-----..I|
|00000120| 6e 20 74 65 78 74 20 6d | 6f 64 65 73 20 74 68 65 |n text m|odes the|
|00000130| 20 61 63 74 69 76 65 20 | 70 61 67 65 20 63 61 6e | active |page can|
|00000140| 20 62 65 20 73 77 69 74 | 63 68 65 64 20 62 65 74 | be swit|ched bet|
|00000150| 77 65 65 6e 20 31 2d 34 | 20 28 38 30 2d 63 6f 6c |ween 1-4| (80-col|
|00000160| 29 20 6f 72 0d 0a 20 31 | 2d 38 20 28 34 30 2d 63 |) or.. 1|-8 (40-c|
|00000170| 6f 6c 29 20 62 79 20 70 | 72 65 73 73 69 6e 67 20 |ol) by p|ressing |
|00000180| 41 4c 54 20 61 6e 64 20 | 74 68 65 20 63 6f 72 72 |ALT and |the corr|
|00000190| 65 73 70 6f 6e 64 69 6e | 67 20 23 20 6f 6e 20 74 |espondin|g # on t|
|000001a0| 68 65 20 54 4f 50 20 52 | 4f 57 2e 20 54 68 69 73 |he TOP R|OW. This|
|000001b0| 0d 0a 20 66 65 61 74 75 | 72 65 20 63 61 6e 20 6f |.. featu|re can o|
|000001c0| 6e 6c 79 20 62 65 20 75 | 73 65 64 20 74 6f 20 76 |nly be u|sed to v|
|000001d0| 69 65 77 20 74 68 65 20 | 6f 74 68 65 72 20 70 61 |iew the |other pa|
|000001e0| 67 65 73 2e 20 20 52 65 | 73 75 6c 74 73 20 6f 66 |ges. Re|sults of|
|000001f0| 20 61 6c 6c 20 43 4f 4e | 20 49 2f 4f 0d 0a 20 77 | all CON| I/O.. w|
|00000200| 68 69 6c 65 20 70 61 67 | 69 6e 67 20 61 72 65 20 |hile pag|ing are |
|00000210| 75 6e 70 72 65 64 69 63 | 74 61 62 6c 65 20 61 6e |unpredic|table an|
|00000220| 64 20 6d 65 73 73 79 2e | 0d 0a 41 73 20 70 72 6f |d messy.|..As pro|
|00000230| 74 65 63 74 69 6f 6e 20 | 61 67 61 69 6e 73 74 20 |tection |against |
|00000240| 64 75 70 6c 69 63 61 74 | 65 20 69 6e 73 74 61 6c |duplicat|e instal|
|00000250| 6c 61 74 69 6f 6e 2c 20 | 49 4e 54 20 31 35 68 20 |lation, |INT 15h |
|00000260| 77 69 74 68 20 41 58 20 | 3d 20 58 27 46 46 30 30 |with AX |= X'FF00|
|00000270| 27 0d 0a 20 72 65 74 75 | 72 6e 73 20 41 58 20 3d |'.. retu|rns AX =|
|00000280| 20 58 27 41 42 43 44 27 | 2e 0d 0a 54 68 65 20 6b | X'ABCD'|...The k|
|00000290| 65 79 70 61 64 20 22 35 | 22 20 6b 65 79 20 77 69 |eypad "5|" key wi|
|000002a0| 6c 6c 20 74 6f 67 67 6c | 65 20 70 72 6f 63 65 73 |ll toggl|e proces|
|000002b0| 73 69 6e 67 2e 20 20 57 | 68 69 6c 65 20 70 61 75 |sing. W|hile pau|
|000002c0| 73 65 64 2c 20 20 61 20 | 66 6c 61 73 68 69 6e 67 |sed, a |flashing|
|000002d0| 2c 0d 0a 20 68 69 67 68 | 6c 69 67 68 74 65 64 20 |,.. high|lighted |
|000002e0| 22 50 22 20 77 69 6c 6c | 20 61 70 70 65 61 72 20 |"P" will| appear |
|000002f0| 69 6e 20 74 68 65 20 6c | 6f 77 65 72 2d 72 69 67 |in the l|ower-rig|
|00000300| 68 74 20 63 6f 72 6e 65 | 72 20 28 6e 6f 74 20 67 |ht corne|r (not g|
|00000310| 72 61 70 68 69 63 73 29 | 2e 0d 0a 49 66 20 4e 75 |raphics)|...If Nu|
|00000320| 6d 6c 6f 63 6b 20 69 73 | 20 6f 6e 2c 20 73 68 69 |mlock is| on, shi|
|00000330| 66 74 2d 22 35 22 20 69 | 73 20 72 65 71 75 69 72 |ft-"5" i|s requir|
|00000340| 65 64 2e 20 20 49 66 20 | 41 6c 74 20 6f 72 20 43 |ed. If |Alt or C|
|00000350| 74 72 6c 20 61 72 65 20 | 70 72 65 73 73 65 64 2c |trl are |pressed,|
|00000360| 20 6e 6f 74 68 69 6e 67 | 0d 0a 20 63 68 61 6e 67 | nothing|.. chang|
|00000370| 65 73 2e 20 20 53 63 72 | 6f 6c 6c 20 4c 6f 63 6b |es. Scr|oll Lock|
|00000380| 2c 20 43 61 70 73 20 4c | 6f 63 6b 2c 20 61 6e 64 |, Caps L|ock, and|
|00000390| 20 49 6e 73 20 61 72 65 | 20 69 72 72 65 6c 65 76 | Ins are| irrelev|
|000003a0| 61 6e 74 2e 0d 0a 54 68 | 69 73 20 70 72 6f 67 72 |ant...Th|is progr|
|000003b0| 61 6d 20 73 65 74 73 20 | 74 68 65 20 76 69 64 65 |am sets |the vide|
|000003c0| 6f 20 6d 6f 64 65 20 74 | 6f 20 38 30 20 63 6f 6c |o mode t|o 80 col|
|000003d0| 20 6d 6f 6e 6f 63 68 72 | 6f 6d 65 2e 0d 0a 54 68 | monochr|ome...Th|
|000003e0| 65 20 65 6e 68 61 6e 63 | 65 64 20 6b 65 79 62 6f |e enhanc|ed keybo|
|000003f0| 61 72 64 20 63 61 6e 20 | 62 65 20 74 6f 67 67 6c |ard can |be toggl|
|00000400| 65 64 20 6f 6e 2f 6f 66 | 66 20 77 69 74 68 20 41 |ed on/of|f with A|
|00000410| 6c 74 2d 50 72 74 53 63 | 2c 20 61 6e 64 20 61 20 |lt-PrtSc|, and a |
|00000420| 31 2f 38 20 73 65 63 0d | 0a 20 32 30 30 30 20 48 |1/8 sec.|. 2000 H|
|00000430| 7a 20 74 6f 6e 65 20 77 | 69 6c 6c 20 73 6f 75 6e |z tone w|ill soun|
|00000440| 64 20 77 68 65 6e 20 74 | 6f 67 67 6c 65 64 20 6f |d when t|oggled o|
|00000450| 6e 2e 20 20 28 54 68 65 | 20 50 72 74 53 63 20 6d |n. (The| PrtSc m|
|00000460| 6f 64 69 66 69 63 61 74 | 69 6f 6e 20 63 61 6e 6e |odificat|ion cann|
|00000470| 6f 74 0d 0a 20 62 65 20 | 74 75 72 6e 65 64 20 6f |ot.. be |turned o|
|00000480| 66 66 2e 29 0d 0a 4e 4f | 54 45 3a 20 49 66 20 62 |ff.)..NO|TE: If b|
|00000490| 6f 74 68 20 20 73 68 69 | 66 74 20 6b 65 79 73 20 |oth shi|ft keys |
|000004a0| 61 72 65 20 64 65 70 72 | 65 73 73 65 64 20 61 74 |are depr|essed at|
|000004b0| 20 69 6e 73 74 61 6c 6c | 61 74 69 6f 6e 20 74 69 | install|ation ti|
|000004c0| 6d 65 2c 20 74 68 65 0d | 0a 20 69 6e 73 74 61 6c |me, the.|. instal|
|000004d0| 6c 61 74 69 6f 6e 20 77 | 69 6c 6c 20 62 65 20 63 |lation w|ill be c|
|000004e0| 61 6e 63 65 6c 6c 65 64 | 2c 20 77 69 74 68 20 65 |ancelled|, with e|
|000004f0| 72 72 6f 72 6c 65 76 65 | 6c 20 73 65 74 20 74 6f |rrorleve|l set to|
|00000500| 20 58 27 41 42 27 2e 0d | 0a 2d 2d 2d 2d 2d 2d 2d | X'AB'..|.-------|
|00000510| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000520| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000530| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000540| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00000550| 2d 7c 0d 0a 62 69 6f 73 | 5f 64 61 74 61 09 73 65 |-|..bios|_data.se|
|00000560| 67 6d 65 6e 74 20 61 74 | 20 30 30 34 30 68 0d 0a |gment at| 0040h..|
|00000570| 09 6f 72 67 09 31 37 68 | 0d 0a 6b 62 5f 66 6c 61 |.org.17h|..kb_fla|
|00000580| 67 09 64 62 09 3f 09 3b | 20 6b 65 79 62 6f 61 72 |g.db.?.;| keyboar|
|00000590| 64 20 73 74 61 74 75 73 | 20 62 79 74 65 0d 0a 6b |d status| byte..k|
|000005a0| 62 5f 66 6c 61 67 5f 31 | 09 64 62 09 3f 0d 0a 0d |b_flag_1|.db.?...|
|000005b0| 0a 09 6f 72 67 09 34 39 | 68 0d 0a 76 5f 6d 6f 64 |..org.49|h..v_mod|
|000005c0| 65 09 64 62 09 3f 09 3b | 20 42 49 4f 53 20 76 69 |e.db.?.;| BIOS vi|
|000005d0| 64 65 6f 20 6d 6f 64 65 | 0d 0a 76 5f 77 69 64 74 |deo mode|..v_widt|
|000005e0| 68 09 64 62 09 3f 09 3b | 20 42 49 4f 53 20 73 63 |h.db.?.;| BIOS sc|
|000005f0| 72 65 65 6e 20 77 69 64 | 74 68 0d 0a 0d 0a 09 6f |reen wid|th.....o|
|00000600| 72 67 09 36 32 68 0d 0a | 76 5f 70 61 67 65 09 64 |rg.62h..|v_page.d|
|00000610| 62 09 3f 09 3b 20 42 49 | 4f 53 20 76 69 64 65 6f |b.?.; BI|OS video|
|00000620| 20 70 61 67 65 0d 0a 6d | 79 73 74 65 72 79 5f 77 | page..m|ystery_w|
|00000630| 09 64 77 09 3f 09 3b 20 | 77 6f 72 64 20 75 73 65 |.dw.?.; |word use|
|00000640| 64 20 62 79 20 70 61 75 | 73 65 20 72 6f 75 74 69 |d by pau|se routi|
|00000650| 6e 65 0d 0a 6d 79 73 74 | 65 72 79 5f 62 09 64 62 |ne..myst|ery_b.db|
|00000660| 09 3f 09 3b 20 62 79 74 | 65 20 75 73 65 64 20 62 |.?.; byt|e used b|
|00000670| 79 20 70 61 75 73 65 20 | 72 6f 75 74 69 6e 65 0d |y pause |routine.|
|00000680| 0a 62 69 6f 73 5f 64 61 | 74 61 20 65 6e 64 73 0d |.bios_da|ta ends.|
|00000690| 0a 0d 0a 63 73 65 67 09 | 73 65 67 6d 65 6e 74 0d |...cseg.|segment.|
|000006a0| 0a 09 61 73 73 75 6d 65 | 09 63 73 3a 63 73 65 67 |..assume|.cs:cseg|
|000006b0| 0d 0a 09 6f 72 67 09 38 | 30 68 0d 0a 70 61 72 6d |...org.8|0h..parm|
|000006c0| 5f 63 6e 74 09 64 62 09 | 3f 09 3b 20 70 61 72 61 |_cnt.db.|?.; para|
|000006d0| 6d 65 74 65 72 20 63 6f | 75 6e 74 0d 0a 70 61 72 |meter co|unt..par|
|000006e0| 6d 5f 64 61 74 61 09 64 | 62 09 3f 09 3b 20 73 74 |m_data.d|b.?.; st|
|000006f0| 61 72 74 20 6f 66 20 70 | 61 72 61 6d 65 74 65 72 |art of p|arameter|
|00000700| 20 64 61 74 61 20 73 70 | 61 63 65 0d 0a 09 6f 72 | data sp|ace...or|
|00000710| 67 09 31 30 30 68 09 3b | 20 2e 43 4f 4d 20 66 69 |g.100h.;| .COM fi|
|00000720| 6c 65 0d 0a 0d 0a 62 65 | 67 69 6e 3a 09 6a 6d 70 |le....be|gin:.jmp|
|00000730| 09 69 6e 69 74 5f 76 65 | 63 74 6f 72 73 09 3b 20 |.init_ve|ctors.; |
|00000740| 69 6e 69 74 69 61 6c 69 | 7a 65 20 61 6e 64 20 61 |initiali|ze and a|
|00000750| 74 74 61 63 68 20 74 6f | 20 44 4f 53 0d 0a 0d 0a |ttach to| DOS....|
|00000760| 3b 20 61 64 64 72 65 73 | 73 65 73 20 6f 66 20 76 |; addres|ses of v|
|00000770| 69 64 65 6f 20 61 6e 64 | 20 6b 65 79 62 6f 61 72 |ideo and| keyboar|
|00000780| 64 20 49 2f 4f 20 52 4f | 4d 20 72 6f 75 74 69 6e |d I/O RO|M routin|
|00000790| 65 73 0d 0a 70 72 74 73 | 63 09 64 64 09 30 09 3b |es..prts|c.dd.0.;|
|000007a0| 20 49 4e 54 20 35 0d 0a | 6b 79 62 64 09 64 64 09 | INT 5..|kybd.dd.|
|000007b0| 30 09 3b 20 49 4e 54 20 | 39 0d 0a 63 61 73 73 09 |0.; INT |9..cass.|
|000007c0| 64 64 09 30 09 3b 20 49 | 4e 54 20 31 35 68 0d 0a |dd.0.; I|NT 15h..|
|000007d0| 6b 79 62 64 5f 69 6f 09 | 64 64 09 30 09 3b 20 49 |kybd_io.|dd.0.; I|
|000007e0| 4e 54 20 31 36 68 0d 0a | 0d 0a 3b 20 63 6f 6e 73 |NT 16h..|..; cons|
|000007f0| 74 61 6e 74 73 20 61 6e | 64 20 73 65 67 6d 65 6e |tants an|d segmen|
|00000800| 74 73 0d 0a 62 69 6f 73 | 5f 64 61 74 09 64 77 09 |ts..bios|_dat.dw.|
|00000810| 34 30 68 09 3b 20 62 69 | 6f 73 5f 64 61 74 61 20 |40h.; bi|os_data |
|00000820| 73 65 67 6d 65 6e 74 0d | 0a 6d 6f 6e 6f 5f 73 65 |segment.|.mono_se|
|00000830| 67 09 64 77 09 30 62 30 | 30 30 68 09 3b 20 73 65 |g.dw.0b0|00h.; se|
|00000840| 67 6d 65 6e 74 20 6f 66 | 20 4d 47 41 0d 0a 63 6f |gment of| MGA..co|
|00000850| 6c 6f 72 5f 73 65 67 09 | 64 77 09 30 62 38 30 30 |lor_seg.|dw.0b800|
|00000860| 68 09 3b 20 73 65 67 6d | 65 6e 74 20 6f 66 20 43 |h.; segm|ent of C|
|00000870| 47 41 0d 0a 64 61 74 61 | 74 62 6c 09 64 62 09 32 |GA..data|tbl.db.2|
|00000880| 2c 33 2c 30 2c 31 2c 36 | 2c 34 2c 35 09 3b 20 73 |,3,0,1,6|,4,5.; s|
|00000890| 63 61 6e 2d 63 6f 64 65 | 20 74 6f 20 76 69 64 65 |can-code| to vide|
|000008a0| 6f 20 6d 6f 64 65 20 64 | 61 74 61 0d 0a 69 6e 64 |o mode d|ata..ind|
|000008b0| 69 63 61 74 6f 72 20 65 | 71 75 20 22 50 22 2b 32 |icator e|qu "P"+2|
|000008c0| 35 36 2a 31 30 30 30 31 | 31 31 31 62 09 3b 20 61 |56*10001|111b.; a|
|000008d0| 6e 20 68 69 67 68 6c 69 | 67 68 74 65 64 2c 20 66 |n highli|ghted, f|
|000008e0| 6c 61 73 68 69 6e 67 20 | 22 50 22 0d 0a 72 6f 77 |lashing |"P"..row|
|000008f0| 20 65 71 75 20 32 34 09 | 09 09 3b 20 70 6f 73 69 | equ 24.|..; posi|
|00000900| 74 69 6f 6e 20 6f 66 20 | 69 6e 64 69 63 61 74 6f |tion of |indicato|
|00000910| 72 20 66 6f 72 20 6d 6f | 6e 6f 20 6d 6f 6e 69 74 |r for mo|no monit|
|00000920| 65 72 0d 0a 63 6f 6c 20 | 65 71 75 20 37 39 0d 0a |er..col |equ 79..|
|00000930| 6d 6f 6e 6f 5f 70 6f 69 | 6e 74 09 65 71 75 20 32 |mono_poi|nt.equ 2|
|00000940| 2a 28 28 72 6f 77 2a 38 | 30 29 2b 63 6f 6c 29 09 |*((row*8|0)+col).|
|00000950| 3b 20 6f 66 66 73 65 74 | 20 69 6e 20 6d 6f 6e 6f |; offset| in mono|
|00000960| 20 73 65 67 6d 65 6e 74 | 0d 0a 0d 0a 3b 20 76 61 | segment|....; va|
|00000970| 72 69 61 62 6c 65 20 64 | 61 74 61 0d 0a 76 64 61 |riable d|ata..vda|
|00000980| 74 61 09 64 62 09 30 09 | 3b 20 63 75 72 72 65 6e |ta.db.0.|; curren|
|00000990| 74 20 76 69 64 65 6f 20 | 6d 6f 64 65 20 6f 72 20 |t video |mode or |
|000009a0| 70 61 67 65 0d 0a 63 6f | 64 65 5f 73 65 67 09 64 |page..co|de_seg.d|
|000009b0| 77 09 30 09 3b 20 43 53 | 20 6f 66 20 72 65 73 69 |w.0.; CS| of resi|
|000009c0| 64 65 6e 74 20 72 6f 75 | 74 69 6e 65 73 0d 0a 67 |dent rou|tines..g|
|000009d0| 72 61 70 68 5f 62 69 74 | 09 64 62 09 30 09 3b 20 |raph_bit|.db.0.; |
|000009e0| 66 6c 61 67 20 74 6f 20 | 73 69 67 6e 61 6c 20 67 |flag to |signal g|
|000009f0| 72 61 70 68 69 63 73 20 | 6d 6f 64 65 0d 0a 74 6f |raphics |mode..to|
|00000a00| 67 67 6c 65 09 64 62 09 | 31 09 3b 20 65 6e 61 62 |ggle.db.|1.; enab|
|00000a10| 6c 65 73 2f 64 69 73 61 | 62 6c 65 73 20 65 6e 68 |les/disa|bles enh|
|00000a20| 61 6e 63 65 64 20 6b 65 | 79 62 6f 61 72 64 0d 0a |anced ke|yboard..|
|00000a30| 0d 0a 70 72 74 73 63 5f | 69 6e 74 3a 09 73 74 69 |..prtsc_|int:.sti|
|00000a40| 09 09 3b 20 65 6e 61 62 | 6c 65 20 69 6e 74 65 72 |..; enab|le inter|
|00000a50| 72 75 70 74 73 0d 0a 09 | 70 75 73 68 09 61 78 09 |rupts...|push.ax.|
|00000a60| 3b 20 73 61 76 65 20 72 | 65 67 73 0d 0a 09 70 75 |; save r|egs...pu|
|00000a70| 73 68 09 64 78 0d 0a 09 | 6d 6f 76 09 61 68 2c 32 |sh.dx...|mov.ah,2|
|00000a80| 09 3b 20 72 65 61 64 20 | 70 72 69 6e 74 65 72 20 |.; read |printer |
|00000a90| 73 74 61 74 75 73 0d 0a | 09 78 6f 72 09 64 78 2c |status..|.xor.dx,|
|00000aa0| 64 78 09 3b 20 7a 65 72 | 6f 20 44 58 20 2d 20 4c |dx.; zer|o DX - L|
|00000ab0| 50 54 31 0d 0a 09 69 6e | 74 09 31 37 68 09 3b 20 |PT1...in|t.17h.; |
|00000ac0| 70 72 69 6e 74 65 72 20 | 49 2f 4f 0d 0a 09 78 6f |printer |I/O...xo|
|00000ad0| 72 09 61 68 2c 33 30 68 | 09 3b 20 63 68 65 63 6b |r.ah,30h|.; check|
|00000ae0| 20 66 6f 72 20 4f 46 46 | 4c 49 4e 45 0d 0a 09 6a | for OFF|LINE...j|
|00000af0| 6e 7a 09 63 68 6b 5f 73 | 68 66 74 09 3b 20 73 6b |nz.chk_s|hft.; sk|
|00000b00| 69 70 20 62 65 65 70 2c | 20 70 72 65 70 61 72 65 |ip beep,| prepare|
|00000b10| 20 66 6f 72 20 65 78 69 | 74 0d 0a 09 70 6f 70 09 | for exi|t...pop.|
|00000b20| 64 78 0d 0a 6e 6f 5f 64 | 75 6d 70 3a 09 70 6f 70 |dx..no_d|ump:.pop|
|00000b30| 09 61 78 0d 0a 09 69 72 | 65 74 0d 0a 63 68 6b 5f |.ax...ir|et..chk_|
|00000b40| 73 68 66 74 3a 09 70 6f | 70 09 64 78 0d 0a 09 70 |shft:.po|p.dx...p|
|00000b50| 75 73 68 09 64 73 0d 0a | 09 6d 6f 76 09 64 73 2c |ush.ds..|.mov.ds,|
|00000b60| 62 69 6f 73 5f 64 61 74 | 09 3b 20 73 65 74 20 44 |bios_dat|.; set D|
|00000b70| 53 20 3d 20 58 27 34 30 | 27 0d 0a 09 61 73 73 75 |S = X'40|'...assu|
|00000b80| 6d 65 09 64 73 3a 62 69 | 6f 73 5f 64 61 74 61 0d |me.ds:bi|os_data.|
|00000b90| 0a 09 74 65 73 74 09 6b | 62 5f 66 6c 61 67 2c 30 |..test.k|b_flag,0|
|00000ba0| 30 30 30 30 30 31 30 62 | 09 3b 20 63 68 65 63 6b |0000010b|.; check|
|00000bb0| 20 66 6f 72 20 4c 45 46 | 54 20 73 68 69 66 74 20 | for LEF|T shift |
|00000bc0| 6b 65 79 0d 0a 09 70 6f | 70 09 64 73 09 3b 20 72 |key...po|p.ds.; r|
|00000bd0| 65 73 74 6f 72 65 20 72 | 65 67 73 0d 0a 09 6a 7a |estore r|egs...jz|
|00000be0| 09 6e 6f 5f 64 75 6d 70 | 09 3b 20 73 6b 69 70 20 |.no_dump|.; skip |
|00000bf0| 73 63 72 65 65 6e 20 64 | 75 6d 70 20 69 66 20 6e |screen d|ump if n|
|00000c00| 6f 20 4c 45 46 54 20 73 | 68 69 66 74 0d 0a 09 70 |o LEFT s|hift...p|
|00000c10| 6f 70 09 61 78 0d 0a 09 | 6a 6d 70 09 70 72 74 73 |op.ax...|jmp.prts|
|00000c20| 63 09 3b 20 70 72 69 6e | 74 20 73 63 72 65 65 6e |c.; prin|t screen|
|00000c30| 20 72 6f 75 74 69 6e 65 | 0d 0a 0d 0a 63 61 6c 63 | routine|....calc|
|00000c40| 75 6c 61 74 65 3a 09 61 | 73 73 75 6d 65 09 64 73 |ulate:.a|ssume.ds|
|00000c50| 3a 62 69 6f 73 5f 64 61 | 74 61 0d 0a 09 78 6f 72 |:bios_da|ta...xor|
|00000c60| 09 61 78 2c 61 78 09 3b | 20 7a 65 72 6f 20 41 58 |.ax,ax.;| zero AX|
|00000c70| 0d 0a 09 78 6f 72 09 63 | 78 2c 63 78 09 3b 20 6c |...xor.c|x,cx.; l|
|00000c80| 69 6b 65 77 69 73 65 0d | 0a 09 6d 6f 76 09 61 6c |ikewise.|..mov.al|
|00000c90| 2c 76 5f 77 69 64 74 68 | 09 3b 20 41 58 20 3d 20 |,v_width|.; AX = |
|00000ca0| 30 30 20 77 69 64 74 68 | 0d 0a 09 6d 6f 76 09 63 |00 width|...mov.c|
|00000cb0| 6c 2c 76 5f 70 61 67 65 | 09 3b 20 73 61 76 65 20 |l,v_page|.; save |
|00000cc0| 66 6f 72 20 6c 61 74 65 | 72 20 6d 75 6c 74 69 70 |for late|r multip|
|00000cd0| 6c 79 0d 0a 09 6d 6f 76 | 09 62 78 2c 32 35 09 3b |ly...mov|.bx,25.;|
|00000ce0| 20 63 61 6c 63 75 6c 61 | 74 65 20 6f 66 66 73 65 | calcula|te offse|
|00000cf0| 74 20 69 6e 74 6f 20 70 | 61 67 65 0d 0a 09 6d 75 |t into p|age...mu|
|00000d00| 6c 09 62 6c 0d 0a 09 64 | 65 63 09 61 78 09 3b 20 |l.bl...d|ec.ax.; |
|00000d10| 3d 20 28 32 35 2a 77 69 | 64 74 68 29 2d 31 0d 0a |= (25*wi|dth)-1..|
|00000d20| 09 73 68 6c 09 61 78 2c | 31 09 3b 20 4d 55 4c 20 |.shl.ax,|1.; MUL |
|00000d30| 41 58 2c 32 20 2d 20 73 | 6b 69 70 20 61 74 74 72 |AX,2 - s|kip attr|
|00000d40| 69 62 75 74 65 20 62 79 | 74 65 73 0d 0a 09 6d 6f |ibute by|tes...mo|
|00000d50| 76 09 62 78 2c 61 78 09 | 3b 20 73 61 76 65 20 69 |v.bx,ax.|; save i|
|00000d60| 6e 20 42 58 0d 0a 09 6d | 6f 76 09 61 78 2c 32 30 |n BX...m|ov.ax,20|
|00000d70| 34 38 09 3b 20 62 79 74 | 65 20 6c 65 6e 67 74 68 |48.; byt|e length|
|00000d80| 20 6f 66 20 34 30 20 63 | 6f 6c 75 6d 6e 20 70 61 | of 40 c|olumn pa|
|00000d90| 67 65 0d 0a 09 63 6d 70 | 09 76 5f 77 69 64 74 68 |ge...cmp|.v_width|
|00000da0| 2c 34 30 09 3b 20 63 68 | 65 63 6b 20 66 6f 72 20 |,40.; ch|eck for |
|00000db0| 34 30 20 63 6f 6c 75 6d | 6e 20 73 63 72 65 65 6e |40 colum|n screen|
|00000dc0| 0d 0a 09 6a 65 09 6d 75 | 6c 74 69 70 6c 79 09 3b |...je.mu|ltiply.;|
|00000dd0| 20 69 66 20 79 65 73 2c | 20 6c 65 61 76 65 20 41 | if yes,| leave A|
|00000de0| 58 20 61 6c 6f 6e 65 0d | 0a 09 73 68 6c 09 61 78 |X alone.|..shl.ax|
|00000df0| 2c 31 09 3b 20 69 66 20 | 6e 6f 2c 20 63 68 61 6e |,1.; if |no, chan|
|00000e00| 67 65 20 74 6f 20 38 30 | 20 63 6f 6c 75 6d 6e 20 |ge to 80| column |
|00000e10| 6f 66 66 73 65 74 0d 0a | 6d 75 6c 74 69 70 6c 79 |offset..|multiply|
|00000e20| 3a 09 6d 75 6c 09 63 78 | 09 3b 20 6d 75 6c 74 69 |:.mul.cx|.; multi|
|00000e30| 70 6c 79 20 62 79 20 70 | 61 67 65 20 6e 75 6d 62 |ply by p|age numb|
|00000e40| 65 72 0d 0a 09 61 64 64 | 09 62 78 2c 61 78 09 3b |er...add|.bx,ax.;|
|00000e50| 20 73 75 6d 20 62 75 66 | 66 65 72 20 6f 66 66 73 | sum buf|fer offs|
|00000e60| 65 74 20 77 69 74 68 20 | 70 61 67 65 20 6f 66 66 |et with |page off|
|00000e70| 73 65 74 0d 0a 09 6d 6f | 76 09 65 73 2c 63 6f 6c |set...mo|v.es,col|
|00000e80| 6f 72 5f 73 65 67 09 3b | 20 6c 6f 61 64 20 45 53 |or_seg.;| load ES|
|00000e90| 20 77 69 74 68 20 43 47 | 41 20 73 65 67 6d 65 6e | with CG|A segmen|
|00000ea0| 74 0d 0a 09 61 73 73 75 | 6d 65 09 65 73 3a 6e 6f |t...assu|me.es:no|
|00000eb0| 74 68 69 6e 67 0d 0a 73 | 6b 69 70 5f 63 67 61 3a |thing..s|kip_cga:|
|00000ec0| 09 6d 6f 76 09 63 78 2c | 65 73 3a 5b 62 78 5d 09 |.mov.cx,|es:[bx].|
|00000ed0| 3b 20 73 61 76 65 20 73 | 63 72 65 65 6e 20 64 61 |; save s|creen da|
|00000ee0| 74 61 20 69 6e 20 43 58 | 0d 0a 09 6d 6f 76 20 77 |ta in CX|...mov w|
|00000ef0| 6f 72 64 20 70 74 72 20 | 65 73 3a 5b 62 78 5d 2c |ord ptr |es:[bx],|
|00000f00| 69 6e 64 69 63 61 74 6f | 72 20 20 20 3b 20 73 74 |indicato|r ; st|
|00000f10| 6f 72 65 20 66 6c 61 73 | 68 69 6e 67 20 22 50 22 |ore flas|hing "P"|
|00000f20| 20 6f 6e 20 73 63 72 65 | 65 6e 0d 0a 0d 0a 72 65 | on scre|en....re|
|00000f30| 6a 6f 69 6e 3a 09 3b 20 | 62 72 61 6e 63 68 20 6d |join:.; |branch m|
|00000f40| 61 64 65 20 69 66 20 67 | 72 61 70 68 69 63 73 20 |ade if g|raphics |
|00000f50| 6d 6f 64 65 20 2d 20 73 | 6b 69 70 20 69 6e 64 69 |mode - s|kip indi|
|00000f60| 63 61 74 6f 72 0d 0a 0d | 0a 09 6d 6f 76 09 64 78 |cator...|..mov.dx|
|00000f70| 2c 6d 79 73 74 65 72 79 | 5f 77 09 3b 20 6c 6f 61 |,mystery|_w.; loa|
|00000f80| 64 20 6d 79 73 74 65 72 | 79 20 77 6f 72 64 0d 0a |d myster|y word..|
|00000f90| 09 61 64 64 09 64 78 2c | 34 09 3b 20 6d 6f 72 65 |.add.dx,|4.; more|
|00000fa0| 20 6d 79 73 74 65 72 69 | 6f 75 73 20 63 6f 64 65 | mysteri|ous code|
|00000fb0| 0d 0a 09 6d 6f 76 09 61 | 6c 2c 6d 79 73 74 65 72 |...mov.a|l,myster|
|00000fc0| 79 5f 62 09 3b 20 6c 6f | 61 64 20 6d 79 73 74 65 |y_b.; lo|ad myste|
|00000fd0| 72 79 20 62 79 74 65 0d | 0a 09 6f 75 74 09 64 78 |ry byte.|..out.dx|
|00000fe0| 2c 61 6c 09 3b 20 49 20 | 68 61 76 65 20 6e 6f 20 |,al.; I |have no |
|00000ff0| 63 6c 75 65 20 77 68 61 | 74 20 74 68 69 73 20 64 |clue wha|t this d|
|00001000| 6f 65 73 0d 0a 0d 0a 09 | 63 61 6c 6c 09 72 65 73 |oes.....|call.res|
|00001010| 65 74 0d 0a 09 6f 72 09 | 6b 62 5f 66 6c 61 67 5f |et...or.|kb_flag_|
|00001020| 31 2c 30 30 30 30 31 30 | 30 30 62 09 3b 20 74 75 |1,000010|00b.; tu|
|00001030| 72 6e 20 63 74 72 6c 2d | 6e 75 6d 2d 6c 6f 63 6b |rn ctrl-|num-lock|
|00001040| 20 6f 6e 0d 0a 09 73 74 | 69 09 09 3b 20 65 6e 61 | on...st|i..; ena|
|00001050| 62 6c 65 20 69 6e 74 65 | 72 72 75 70 74 73 0d 0a |ble inte|rrupts..|
|00001060| 61 67 61 69 6e 3a 09 74 | 65 73 74 09 6b 62 5f 66 |again:.t|est.kb_f|
|00001070| 6c 61 67 5f 31 2c 30 30 | 30 30 31 30 30 30 62 09 |lag_1,00|001000b.|
|00001080| 3b 20 63 68 65 63 6b 20 | 69 66 20 63 74 72 6c 2d |; check |if ctrl-|
|00001090| 6e 75 6d 2d 6c 6f 63 6b | 20 6f 6e 0d 0a 09 6a 6e |num-lock| on...jn|
|000010a0| 7a 09 61 67 61 69 6e 09 | 3b 20 69 66 20 6f 6e 2c |z.again.|; if on,|
|000010b0| 20 63 68 65 63 6b 20 61 | 67 61 69 6e 0d 0a 0d 0a | check a|gain....|
|000010c0| 09 63 6c 69 09 09 3b 20 | 64 69 73 61 62 6c 65 20 |.cli..; |disable |
|000010d0| 69 6e 74 65 72 72 75 70 | 74 73 20 28 70 6c 61 79 |interrup|ts (play|
|000010e0| 20 69 74 20 73 61 66 65 | 29 0d 0a 09 74 65 73 74 | it safe|)...test|
|000010f0| 09 67 72 61 70 68 5f 62 | 69 74 2c 31 09 3b 20 63 |.graph_b|it,1.; c|
|00001100| 68 65 63 6b 20 69 66 20 | 67 72 61 70 68 69 63 73 |heck if |graphics|
|00001110| 20 6d 6f 64 65 0d 0a 09 | 6d 6f 76 09 67 72 61 70 | mode...|mov.grap|
|00001120| 68 5f 62 69 74 2c 30 09 | 3b 20 72 65 73 65 74 20 |h_bit,0.|; reset |
|00001130| 67 72 61 70 68 69 63 73 | 20 66 6c 61 67 0d 0a 09 |graphics| flag...|
|00001140| 6a 6e 7a 09 73 6b 69 70 | 5f 6d 6f 76 09 3b 20 73 |jnz.skip|_mov.; s|
|00001150| 6b 69 70 20 72 65 73 74 | 6f 72 61 74 69 6f 6e 20 |kip rest|oration |
|00001160| 6f 66 20 73 63 72 65 65 | 6e 20 64 61 74 61 0d 0a |of scree|n data..|
|00001170| 09 6d 6f 76 09 65 73 3a | 5b 62 78 5d 2c 63 78 09 |.mov.es:|[bx],cx.|
|00001180| 3b 20 72 65 73 74 6f 72 | 65 20 73 63 72 65 65 6e |; restor|e screen|
|00001190| 20 64 61 74 61 0d 0a 73 | 6b 69 70 5f 6d 6f 76 3a | data..s|kip_mov:|
|000011a0| 09 70 6f 70 09 65 73 09 | 3b 20 72 65 73 74 6f 72 |.pop.es.|; restor|
|000011b0| 65 20 72 65 67 73 0d 0a | 09 70 6f 70 09 64 78 0d |e regs..|.pop.dx.|
|000011c0| 0a 09 70 6f 70 09 63 78 | 0d 0a 09 70 6f 70 09 62 |..pop.cx|...pop.b|
|000011d0| 78 0d 0a 09 70 6f 70 09 | 64 73 0d 0a 09 70 6f 70 |x...pop.|ds...pop|
|000011e0| 09 61 78 0d 0a 09 69 72 | 65 74 0d 0a 0d 0a 70 61 |.ax...ir|et....pa|
|000011f0| 75 73 65 3a 09 61 73 73 | 75 6d 65 09 64 73 3a 62 |use:.ass|ume.ds:b|
|00001200| 69 6f 73 5f 64 61 74 61 | 09 3b 20 44 53 20 73 65 |ios_data|.; DS se|
|00001210| 74 20 69 6e 20 46 49 56 | 45 3a 20 72 6f 75 74 69 |t in FIV|E: routi|
|00001220| 6e 65 0d 0a 09 70 75 73 | 68 09 62 78 09 3b 20 73 |ne...pus|h.bx.; s|
|00001230| 61 76 65 20 42 58 20 28 | 66 6f 72 20 61 63 74 69 |ave BX (|for acti|
|00001240| 76 65 20 70 61 67 65 29 | 0d 0a 09 70 75 73 68 09 |ve page)|...push.|
|00001250| 63 78 09 3b 20 73 61 76 | 65 20 43 58 20 74 6f 20 |cx.; sav|e CX to |
|00001260| 75 73 65 20 61 73 20 73 | 63 72 61 74 63 68 20 72 |use as s|cratch r|
|00001270| 65 67 69 73 74 65 72 0d | 0a 09 70 75 73 68 09 64 |egister.|..push.d|
|00001280| 78 0d 0a 09 70 75 73 68 | 09 65 73 0d 0a 09 63 6d |x...push|.es...cm|
|00001290| 70 09 76 5f 6d 6f 64 65 | 2c 34 09 3b 20 63 68 65 |p.v_mode|,4.; che|
|000012a0| 63 6b 20 66 6f 72 20 74 | 65 78 74 20 6d 6f 64 65 |ck for t|ext mode|
|000012b0| 0d 0a 09 6a 62 09 63 61 | 6c 63 75 6c 61 74 65 09 |...jb.ca|lculate.|
|000012c0| 3b 20 63 6f 6e 74 69 6e | 75 65 20 69 66 20 79 65 |; contin|ue if ye|
|000012d0| 73 0d 0a 09 63 6d 70 09 | 76 5f 6d 6f 64 65 2c 37 |s...cmp.|v_mode,7|
|000012e0| 09 3b 20 63 68 65 63 6b | 20 66 6f 72 20 6d 6f 6e |.; check| for mon|
|000012f0| 6f 63 68 72 6f 6d 65 20 | 62 75 66 66 65 72 0d 0a |ochrome |buffer..|
|00001300| 09 6a 6e 65 09 6e 6f 5f | 70 09 3b 20 73 6b 69 70 |.jne.no_|p.; skip|
|00001310| 20 22 50 22 20 69 66 20 | 67 72 61 70 68 69 63 73 | "P" if |graphics|
|00001320| 0d 0a 09 6d 6f 76 09 65 | 73 2c 63 73 3a 6d 6f 6e |...mov.e|s,cs:mon|
|00001330| 6f 5f 73 65 67 09 3b 20 | 70 6f 69 6e 74 20 45 53 |o_seg.; |point ES|
|00001340| 20 74 6f 20 73 65 67 6d | 65 6e 74 20 61 74 20 30 | to segm|ent at 0|
|00001350| 62 30 30 30 68 0d 0a 09 | 6d 6f 76 09 62 78 2c 6d |b000h...|mov.bx,m|
|00001360| 6f 6e 6f 5f 70 6f 69 6e | 74 09 3b 20 6f 66 66 73 |ono_poin|t.; offs|
|00001370| 65 74 20 69 6e 74 6f 20 | 6d 6f 6e 6f 63 68 72 6f |et into |monochro|
|00001380| 6d 65 20 73 65 67 6d 65 | 6e 74 0d 0a 09 6a 6d 70 |me segme|nt...jmp|
|00001390| 20 73 68 6f 72 74 20 73 | 6b 69 70 5f 63 67 61 09 | short s|kip_cga.|
|000013a0| 3b 20 73 6b 69 70 20 63 | 6f 6c 6f 72 20 73 65 74 |; skip c|olor set|
|000013b0| 75 70 0d 0a 0d 0a 6e 6f | 5f 70 3a 09 6d 6f 76 09 |up....no|_p:.mov.|
|000013c0| 67 72 61 70 68 5f 62 69 | 74 2c 31 09 3b 20 73 65 |graph_bi|t,1.; se|
|000013d0| 74 20 67 72 61 70 68 69 | 63 73 20 6d 6f 64 65 20 |t graphi|cs mode |
|000013e0| 66 6c 61 67 0d 0a 09 6a | 6d 70 20 73 68 6f 72 74 |flag...j|mp short|
|000013f0| 20 72 65 6a 6f 69 6e 09 | 3b 20 72 65 6a 6f 69 6e | rejoin.|; rejoin|
|00001400| 20 6d 61 69 6e 20 63 6f | 64 65 0d 0a 0d 0a 79 65 | main co|de....ye|
|00001410| 73 3a 09 61 6e 64 09 6b | 62 5f 66 6c 61 67 5f 31 |s:.and.k|b_flag_1|
|00001420| 2c 31 31 31 31 30 31 31 | 31 62 09 3b 20 74 75 72 |,1111011|1b.; tur|
|00001430| 6e 20 63 74 72 6c 2d 6e | 75 6d 2d 6c 6f 63 6b 20 |n ctrl-n|um-lock |
|00001440| 6f 66 66 0d 0a 09 63 61 | 6c 6c 09 72 65 73 65 74 |off...ca|ll.reset|
|00001450| 09 3b 20 72 65 73 65 74 | 20 6b 65 79 62 6f 61 72 |.; reset| keyboar|
|00001460| 64 0d 0a 09 70 6f 70 09 | 64 73 0d 0a 09 70 6f 70 |d...pop.|ds...pop|
|00001470| 09 61 78 0d 0a 09 69 72 | 65 74 0d 0a 0d 0a 09 61 |.ax...ir|et.....a|
|00001480| 73 73 75 6d 65 09 64 73 | 3a 6e 6f 74 68 69 6e 67 |ssume.ds|:nothing|
|00001490| 0d 0a 66 69 76 65 3a 09 | 70 75 73 68 09 64 73 09 |..five:.|push.ds.|
|000014a0| 3b 20 73 61 76 65 20 64 | 61 74 61 20 73 65 67 6d |; save d|ata segm|
|000014b0| 65 6e 74 0d 0a 09 6d 6f | 76 09 64 73 2c 63 73 3a |ent...mo|v.ds,cs:|
|000014c0| 62 69 6f 73 5f 64 61 74 | 09 3b 20 70 6f 69 6e 74 |bios_dat|.; point|
|000014d0| 20 74 6f 20 6b 65 79 62 | 6f 61 72 64 20 64 61 74 | to keyb|oard dat|
|000014e0| 61 0d 0a 09 61 73 73 75 | 6d 65 09 64 73 3a 62 69 |a...assu|me.ds:bi|
|000014f0| 6f 73 5f 64 61 74 61 0d | 0a 09 74 65 73 74 09 6b |os_data.|..test.k|
|00001500| 62 5f 66 6c 61 67 5f 31 | 2c 30 30 30 30 31 30 30 |b_flag_1|,0000100|
|00001510| 30 62 09 3b 20 63 68 65 | 63 6b 20 69 66 20 43 74 |0b.; che|ck if Ct|
|00001520| 72 6c 2d 4e 75 6d 4c 6f | 63 6b 20 6f 6e 0d 0a 09 |rl-NumLo|ck on...|
|00001530| 6a 6e 7a 09 79 65 73 09 | 3b 20 69 66 20 79 65 73 |jnz.yes.|; if yes|
|00001540| 2c 20 75 6e 70 61 75 73 | 65 0d 0a 09 6d 6f 76 09 |, unpaus|e...mov.|
|00001550| 61 6c 2c 6b 62 5f 66 6c | 61 67 09 3b 20 67 65 74 |al,kb_fl|ag.; get|
|00001560| 20 73 68 69 66 74 20 6b | 65 79 20 73 74 61 74 75 | shift k|ey statu|
|00001570| 73 20 62 79 74 65 0d 0a | 09 74 65 73 74 09 61 6c |s byte..|.test.al|
|00001580| 2c 30 30 30 30 31 31 30 | 30 62 09 3b 20 63 68 65 |,0000110|0b.; che|
|00001590| 63 6b 20 66 6f 72 20 41 | 6c 74 20 6f 72 20 43 74 |ck for A|lt or Ct|
|000015a0| 72 6c 20 70 72 65 73 73 | 65 64 0d 0a 09 6a 6e 7a |rl press|ed...jnz|
|000015b0| 09 71 75 69 74 09 3b 20 | 65 78 69 74 20 69 66 20 |.quit.; |exit if |
|000015c0| 73 6f 0d 0a 09 61 6e 64 | 09 61 6c 2c 30 30 31 30 |so...and|.al,0010|
|000015d0| 30 30 31 31 62 09 3b 20 | 69 73 6f 6c 61 74 65 20 |0011b.; |isolate |
|000015e0| 4e 75 6d 4c 6f 63 6b 20 | 61 6e 64 20 53 68 69 66 |NumLock |and Shif|
|000015f0| 74 20 62 69 74 73 0d 0a | 09 6a 7a 09 70 61 75 73 |t bits..|.jz.paus|
|00001600| 65 09 3b 20 69 66 20 7a | 65 72 6f 20 28 6e 6f 6e |e.; if z|ero (non|
|00001610| 65 20 70 72 65 73 73 65 | 64 29 20 74 68 65 6e 20 |e presse|d) then |
|00001620| 67 6f 21 0d 0a 09 63 6d | 70 09 61 6c 2c 30 30 31 |go!...cm|p.al,001|
|00001630| 30 30 30 30 30 62 0d 0a | 09 6a 61 09 70 61 75 73 |00000b..|.ja.paus|
|00001640| 65 09 3b 20 62 6f 74 68 | 20 4e 75 6d 4c 6f 63 6b |e.; both| NumLock|
|00001650| 20 26 20 53 68 69 66 74 | 20 6d 75 73 74 20 62 65 | & Shift| must be|
|00001660| 20 70 72 65 73 73 65 64 | 0d 0a 09 09 09 3b 20 69 | pressed|.....; i|
|00001670| 66 20 6e 6f 74 2c 20 74 | 68 65 6e 20 65 6e 64 0d |f not, t|hen end.|
|00001680| 0a 09 61 73 73 75 6d 65 | 09 64 73 3a 6e 6f 74 68 |..assume|.ds:noth|
|00001690| 69 6e 67 0d 0a 71 75 69 | 74 3a 09 70 6f 70 09 64 |ing..qui|t:.pop.d|
|000016a0| 73 09 3b 20 72 65 73 74 | 6f 72 65 20 72 65 67 73 |s.; rest|ore regs|
|000016b0| 0d 0a 09 70 6f 70 09 61 | 78 0d 0a 09 6a 6d 70 09 |...pop.a|x...jmp.|
|000016c0| 6b 79 62 64 09 3b 20 67 | 6f 74 6f 20 42 49 4f 53 |kybd.; g|oto BIOS|
|000016d0| 0d 0a 0d 0a 09 61 73 73 | 75 6d 65 09 64 73 3a 6e |.....ass|ume.ds:n|
|000016e0| 6f 74 68 69 6e 67 0d 0a | 3b 20 69 6e 74 65 72 63 |othing..|; interc|
|000016f0| 65 70 74 73 20 49 4e 54 | 20 39 0d 0a 6b 79 62 64 |epts INT| 9..kybd|
|00001700| 5f 69 6e 74 3a 09 70 75 | 73 68 09 61 78 09 3b 20 |_int:.pu|sh.ax.; |
|00001710| 73 61 76 65 20 72 65 67 | 0d 0a 09 69 6e 09 61 6c |save reg|...in.al|
|00001720| 2c 36 30 68 09 3b 20 67 | 65 74 20 73 63 61 6e 20 |,60h.; g|et scan |
|00001730| 63 6f 64 65 0d 0a 09 63 | 6d 70 09 61 6c 2c 33 37 |code...c|mp.al,37|
|00001740| 68 09 3b 20 73 63 61 6e | 20 63 6f 64 65 20 6f 66 |h.; scan| code of|
|00001750| 20 50 72 74 53 63 20 6b | 65 79 0d 0a 09 6a 65 09 | PrtSc k|ey...je.|
|00001760| 74 6f 67 5f 63 68 6b 09 | 3b 20 63 68 65 63 6b 20 |tog_chk.|; check |
|00001770| 66 6f 72 20 41 6c 74 20 | 70 72 65 73 73 65 64 20 |for Alt |pressed |
|00001780| 62 65 66 6f 72 65 20 74 | 6f 67 67 6c 69 6e 67 0d |before t|oggling.|
|00001790| 0a 09 74 65 73 74 09 74 | 6f 67 67 6c 65 2c 31 09 |..test.t|oggle,1.|
|000017a0| 3b 20 63 68 65 63 6b 20 | 69 66 20 65 6e 68 61 6e |; check |if enhan|
|000017b0| 63 65 64 20 6b 65 79 62 | 6f 61 72 64 20 65 6e 61 |ced keyb|oard ena|
|000017c0| 62 6c 65 64 0d 0a 09 6a | 7a 09 6f 66 66 09 3b 20 |bled...j|z.off.; |
|000017d0| 69 66 20 6e 6f 74 2c 20 | 73 6b 69 70 20 65 6e 68 |if not, |skip enh|
|000017e0| 61 6e 63 65 64 20 70 72 | 6f 63 65 73 73 69 6e 67 |anced pr|ocessing|
|000017f0| 0d 0a 09 63 6d 70 09 61 | 6c 2c 34 63 68 09 3b 20 |...cmp.a|l,4ch.; |
|00001800| 73 63 61 6e 20 63 6f 64 | 65 20 6f 66 20 6b 65 79 |scan cod|e of key|
|00001810| 70 61 64 20 22 35 22 20 | 3f 0d 0a 09 6a 65 09 66 |pad "5" |?...je.f|
|00001820| 69 76 65 09 3b 20 69 66 | 20 79 65 73 2c 20 63 68 |ive.; if| yes, ch|
|00001830| 65 63 6b 20 66 75 72 74 | 68 65 72 0d 0a 09 63 6d |eck furt|her...cm|
|00001840| 70 09 61 6c 2c 34 36 68 | 09 3b 20 63 68 65 63 6b |p.al,46h|.; check|
|00001850| 20 66 6f 72 20 53 63 72 | 6f 6c 6c 2d 4c 6f 63 6b | for Scr|oll-Lock|
|00001860| 20 28 42 72 65 61 6b 29 | 20 6b 65 79 0d 0a 09 6a | (Break)| key...j|
|00001870| 65 09 62 72 65 61 6b 09 | 3b 20 69 66 20 73 6f 2c |e.break.|; if so,|
|00001880| 20 6c 6f 6f 6b 20 66 6f | 72 20 43 74 72 6c 2d 53 | look fo|r Ctrl-S|
|00001890| 68 69 66 74 0d 0a 6f 66 | 66 3a 09 70 6f 70 09 61 |hift..of|f:.pop.a|
|000018a0| 78 09 3b 20 20 69 66 20 | 6e 6f 74 2c 20 72 65 73 |x.; if |not, res|
|000018b0| 74 6f 72 65 20 72 65 67 | 20 61 6e 64 0d 0a 09 6a |tore reg| and...j|
|000018c0| 6d 70 09 6b 79 62 64 09 | 3b 20 67 6f 74 6f 20 42 |mp.kybd.|; goto B|
|000018d0| 49 4f 53 0d 0a 0d 0a 3b | 20 63 68 65 63 6b 20 66 |IOS....;| check f|
|000018e0| 6f 72 20 72 69 67 68 74 | 2d 73 68 69 66 74 2d 43 |or right|-shift-C|
|000018f0| 74 72 6c 0d 0a 62 72 65 | 61 6b 3a 09 70 75 73 68 |trl..bre|ak:.push|
|00001900| 09 64 73 09 3b 20 73 61 | 76 65 20 72 65 67 0d 0a |.ds.; sa|ve reg..|
|00001910| 09 6d 6f 76 09 64 73 2c | 62 69 6f 73 5f 64 61 74 |.mov.ds,|bios_dat|
|00001920| 09 3b 20 73 65 74 20 44 | 53 20 74 6f 20 62 69 6f |.; set D|S to bio|
|00001930| 73 20 64 61 74 61 20 73 | 65 67 6d 65 6e 74 0d 0a |s data s|egment..|
|00001940| 09 61 73 73 75 6d 65 09 | 64 73 3a 62 69 6f 73 5f |.assume.|ds:bios_|
|00001950| 64 61 74 61 0d 0a 09 74 | 65 73 74 09 6b 62 5f 66 |data...t|est.kb_f|
|00001960| 6c 61 67 5f 31 2c 30 30 | 30 30 31 30 30 30 62 09 |lag_1,00|001000b.|
|00001970| 3b 20 63 68 65 63 6b 20 | 69 66 20 63 74 72 6c 2d |; check |if ctrl-|
|00001980| 6e 75 6d 2d 6c 6f 63 6b | 20 6f 6e 0d 0a 09 6a 6e |num-lock| on...jn|
|00001990| 7a 09 71 75 69 74 09 3b | 20 67 6f 74 6f 20 42 49 |z.quit.;| goto BI|
|000019a0| 4f 53 20 69 66 20 79 65 | 73 0d 0a 09 74 65 73 74 |OS if ye|s...test|
|000019b0| 09 6b 62 5f 66 6c 61 67 | 2c 30 30 30 30 30 30 30 |.kb_flag|,0000000|
|000019c0| 31 62 09 3b 20 72 69 67 | 68 74 20 73 68 69 66 74 |1b.; rig|ht shift|
|000019d0| 20 6b 65 79 20 70 72 65 | 73 73 65 64 3f 0d 0a 09 | key pre|ssed?...|
|000019e0| 6a 7a 09 71 75 69 74 0d | 0a 09 74 65 73 74 09 6b |jz.quit.|..test.k|
|000019f0| 62 5f 66 6c 61 67 2c 30 | 30 30 30 30 31 30 30 62 |b_flag,0|0000100b|
|00001a00| 09 3b 20 63 68 65 63 6b | 20 66 6f 72 20 43 74 72 |.; check| for Ctr|
|00001a10| 6c 20 6b 65 79 20 70 72 | 65 73 73 65 64 0d 0a 09 |l key pr|essed...|
|00001a20| 6a 7a 09 71 75 69 74 0d | 0a 09 63 61 6c 6c 09 72 |jz.quit.|..call.r|
|00001a30| 65 73 65 74 0d 0a 09 6d | 6f 76 09 61 78 2c 34 63 |eset...m|ov.ax,4c|
|00001a40| 63 61 68 09 3b 20 44 4f | 53 20 45 58 49 54 20 66 |cah.; DO|S EXIT f|
|00001a50| 75 6e 63 74 69 6f 6e 20 | 34 43 0d 0a 09 09 09 3b |unction |4C.....;|
|00001a60| 20 20 45 72 72 6f 72 4c | 65 76 65 6c 20 3d 20 32 | ErrorL|evel = 2|
|00001a70| 30 32 0d 0a 09 69 6e 74 | 09 32 31 68 0d 0a 09 70 |02...int|.21h...p|
|00001a80| 6f 70 09 64 73 09 3b 20 | 72 65 73 74 6f 72 65 20 |op.ds.; |restore |
|00001a90| 72 65 67 73 0d 0a 09 70 | 6f 70 09 61 78 0d 0a 09 |regs...p|op.ax...|
|00001aa0| 69 72 65 74 09 09 3b 20 | 72 65 74 75 72 6e 20 66 |iret..; |return f|
|00001ab0| 72 6f 6d 20 6b 65 79 20 | 69 6e 74 65 72 72 75 70 |rom key |interrup|
|00001ac0| 74 0d 0a 0d 0a 74 6f 67 | 5f 63 68 6b 3a 09 70 75 |t....tog|_chk:.pu|
|00001ad0| 73 68 09 64 73 09 3b 20 | 73 61 76 65 20 44 53 0d |sh.ds.; |save DS.|
|00001ae0| 0a 09 6d 6f 76 09 64 73 | 2c 62 69 6f 73 5f 64 61 |..mov.ds|,bios_da|
|00001af0| 74 09 3b 20 70 6f 69 6e | 74 20 44 53 20 74 6f 20 |t.; poin|t DS to |
|00001b00| 62 69 6f 73 20 64 61 74 | 61 20 73 65 67 6d 65 6e |bios dat|a segmen|
|00001b10| 74 0d 0a 09 61 73 73 75 | 6d 65 09 64 73 3a 62 69 |t...assu|me.ds:bi|
|00001b20| 6f 73 5f 64 61 74 61 0d | 0a 09 74 65 73 74 09 6b |os_data.|..test.k|
|00001b30| 62 5f 66 6c 61 67 5f 31 | 2c 30 30 30 30 31 30 30 |b_flag_1|,0000100|
|00001b40| 30 62 09 3b 20 63 68 65 | 63 6b 20 66 6f 72 20 43 |0b.; che|ck for C|
|00001b50| 74 72 6c 2d 4e 75 6d 4c | 6f 63 6b 20 70 61 75 73 |trl-NumL|ock paus|
|00001b60| 65 20 6f 6e 0d 0a 09 6a | 6e 7a 09 71 75 69 74 09 |e on...j|nz.quit.|
|00001b70| 3b 20 67 6f 74 6f 20 42 | 49 4f 53 20 69 66 20 79 |; goto B|IOS if y|
|00001b80| 65 73 0d 0a 09 74 65 73 | 74 09 6b 62 5f 66 6c 61 |es...tes|t.kb_fla|
|00001b90| 67 2c 30 30 30 30 30 31 | 31 31 62 09 3b 20 63 68 |g,000001|11b.; ch|
|00001ba0| 65 63 6b 20 66 6f 72 20 | 43 74 72 6c 20 6f 72 20 |eck for |Ctrl or |
|00001bb0| 4c 2f 52 20 73 68 69 66 | 74 20 70 72 65 73 73 65 |L/R shif|t presse|
|00001bc0| 64 0d 0a 09 6a 6e 7a 09 | 71 75 69 74 09 3b 20 64 |d...jnz.|quit.; d|
|00001bd0| 6f 6e 27 74 20 74 6f 67 | 67 6c 65 20 69 66 20 79 |on't tog|gle if y|
|00001be0| 65 73 20 2d 20 73 65 6e | 64 20 6b 65 79 20 74 6f |es - sen|d key to|
|00001bf0| 20 62 69 6f 73 0d 0a 09 | 74 65 73 74 09 6b 62 5f | bios...|test.kb_|
|00001c00| 66 6c 61 67 2c 30 30 30 | 30 31 30 30 30 62 09 3b |flag,000|01000b.;|
|00001c10| 20 63 68 65 63 6b 20 66 | 6f 72 20 41 6c 74 20 70 | check f|or Alt p|
|00001c20| 72 65 73 73 65 64 0d 0a | 09 6a 7a 09 71 75 69 74 |ressed..|.jz.quit|
|00001c30| 09 3b 20 64 6f 6e 27 74 | 20 74 6f 67 67 6c 65 20 |.; don't| toggle |
|00001c40| 69 66 20 6e 6f 20 2d 20 | 73 65 6e 64 20 6b 65 79 |if no - |send key|
|00001c50| 20 74 6f 20 62 69 6f 73 | 0d 0a 09 78 6f 72 09 74 | to bios|...xor.t|
|00001c60| 6f 67 67 6c 65 2c 31 09 | 3b 20 74 6f 67 67 6c 65 |oggle,1.|; toggle|
|00001c70| 0d 0a 09 6a 7a 09 73 6b | 69 70 5f 62 65 65 70 09 |...jz.sk|ip_beep.|
|00001c80| 3b 20 73 6b 69 70 20 62 | 65 65 70 20 69 66 20 74 |; skip b|eep if t|
|00001c90| 6f 67 67 6c 65 64 20 6f | 66 66 0d 0a 09 70 75 73 |oggled o|ff...pus|
|00001ca0| 68 20 20 20 20 63 78 09 | 3b 20 73 61 76 65 20 63 |h cx.|; save c|
|00001cb0| 6f 75 6e 74 20 72 65 67 | 20 66 6f 72 20 64 65 6c |ount reg| for del|
|00001cc0| 61 79 0d 0a 3b 20 62 65 | 65 70 0d 0a 3b 20 53 74 |ay..; be|ep..; St|
|00001cd0| 65 70 20 31 20 2d 2d 20 | 70 72 65 70 61 72 65 20 |ep 1 -- |prepare |
|00001ce0| 74 68 65 20 74 69 6d 65 | 72 20 74 6f 20 72 65 63 |the time|r to rec|
|00001cf0| 65 69 76 65 20 69 74 73 | 20 64 69 76 69 73 6f 72 |eive its| divisor|
|00001d00| 0d 0a 09 6d 6f 76 20 20 | 20 20 20 61 6c 2c 30 62 |...mov | al,0b|
|00001d10| 36 68 09 3b 20 74 69 6d | 65 72 20 6d 6f 64 65 20 |6h.; tim|er mode |
|00001d20| 72 65 67 69 73 74 65 72 | 20 73 69 67 6e 61 6c 0d |register| signal.|
|00001d30| 0a 09 6f 75 74 20 20 20 | 20 20 36 37 2c 61 6c 09 |..out | 67,al.|
|00001d40| 3b 20 6f 75 74 70 75 74 | 20 74 6f 20 74 69 6d 65 |; output| to time|
|00001d50| 72 20 63 6f 6e 74 72 6f | 6c 20 70 6f 72 74 0d 0a |r contro|l port..|
|00001d60| 3b 20 53 74 65 70 20 32 | 20 2d 2d 20 73 65 6e 64 |; Step 2| -- send|
|00001d70| 20 74 68 65 20 64 69 76 | 69 73 6f 72 20 63 6f 75 | the div|isor cou|
|00001d80| 6e 74 20 74 6f 20 74 68 | 65 20 74 69 6d 65 72 0d |nt to th|e timer.|
|00001d90| 0a 3b 20 20 20 44 69 76 | 69 73 6f 72 20 3d 20 28 |.; Div|isor = (|
|00001da0| 31 2c 31 39 30 2c 30 30 | 30 20 2f 20 64 65 73 69 |1,190,00|0 / desi|
|00001db0| 72 65 64 20 66 72 65 71 | 75 65 6e 63 79 29 0d 0a |red freq|uency)..|
|00001dc0| 09 6d 6f 76 20 20 20 20 | 20 61 78 2c 35 39 35 09 |.mov | ax,595.|
|00001dd0| 3b 20 64 69 76 69 73 6f | 72 20 66 6f 72 20 32 30 |; diviso|r for 20|
|00001de0| 30 30 20 48 7a 0d 0a 09 | 6f 75 74 20 20 20 20 20 |00 Hz...|out |
|00001df0| 36 36 2c 61 6c 09 3b 20 | 6f 75 74 70 75 74 20 6c |66,al.; |output l|
|00001e00| 6f 77 2d 6f 72 64 65 72 | 20 62 79 74 65 20 6f 66 |ow-order| byte of|
|00001e10| 20 64 69 76 69 73 6f 72 | 0d 0a 09 6d 6f 76 20 20 | divisor|...mov |
|00001e20| 20 20 20 61 6c 2c 61 68 | 09 3b 20 20 68 69 67 68 | al,ah|.; high|
|00001e30| 2d 6f 72 64 65 72 20 62 | 79 74 65 20 74 6f 20 6f |-order b|yte to o|
|00001e40| 75 74 70 75 74 20 72 65 | 67 0d 0a 09 6f 75 74 20 |utput re|g...out |
|00001e50| 20 20 20 20 36 36 2c 61 | 6c 09 3b 20 6f 75 74 70 | 66,a|l.; outp|
|00001e60| 75 74 20 68 69 67 68 2d | 6f 72 64 65 72 20 62 79 |ut high-|order by|
|00001e70| 74 65 20 6f 66 20 64 69 | 76 69 73 6f 72 0d 0a 3b |te of di|visor..;|
|00001e80| 20 53 74 65 70 20 33 20 | 2d 2d 20 74 75 72 6e 20 | Step 3 |-- turn |
|00001e90| 6f 6e 20 74 68 65 20 74 | 77 6f 20 62 69 74 73 20 |on the t|wo bits |
|00001ea0| 77 68 69 63 68 20 61 63 | 74 69 76 61 74 65 20 74 |which ac|tivate t|
|00001eb0| 68 65 20 73 70 65 61 6b | 65 72 2c 20 61 6e 64 20 |he speak|er, and |
|00001ec0| 74 68 65 0d 0a 3b 20 20 | 20 20 20 20 20 20 20 20 |the..; | |
|00001ed0| 20 74 69 6d 65 72 27 73 | 20 63 6f 6e 74 72 6f 6c | timer's| control|
|00001ee0| 20 6f 66 20 74 68 65 20 | 73 70 65 61 6b 65 72 0d | of the |speaker.|
|00001ef0| 0a 09 69 6e 20 20 20 20 | 20 20 61 6c 2c 39 37 09 |..in | al,97.|
|00001f00| 3b 20 67 65 74 20 63 75 | 72 72 65 6e 74 20 62 69 |; get cu|rrent bi|
|00001f10| 74 20 73 65 74 74 69 6e | 67 73 20 2d 20 70 6f 72 |t settin|gs - por|
|00001f20| 74 20 39 37 0d 0a 09 6d | 6f 76 20 20 20 20 20 61 |t 97...m|ov a|
|00001f30| 68 2c 61 6c 09 3b 20 73 | 61 76 65 20 70 6f 72 74 |h,al.; s|ave port|
|00001f40| 20 39 37 20 74 6f 20 74 | 75 72 6e 20 73 6f 75 6e | 97 to t|urn soun|
|00001f50| 64 20 6f 66 66 0d 0a 09 | 6f 72 20 20 20 20 20 20 |d off...|or |
|00001f60| 61 6c 2c 30 33 09 3b 20 | 74 75 72 6e 20 6f 6e 20 |al,03.; |turn on |
|00001f70| 6c 61 73 74 20 74 77 6f | 20 62 69 74 73 0d 0a 09 |last two| bits...|
|00001f80| 6f 75 74 20 20 20 20 20 | 39 37 2c 61 6c 09 3b 20 |out |97,al.; |
|00001f90| 20 73 65 6e 64 20 62 61 | 63 6b 20 74 68 65 20 6e | send ba|ck the n|
|00001fa0| 65 77 20 76 61 6c 75 65 | 0d 0a 0d 0a 09 6d 6f 76 |ew value|.....mov|
|00001fb0| 20 20 20 20 20 63 78 2c | 38 30 30 30 68 09 3b 20 | cx,|8000h.; |
|00001fc0| 61 70 70 72 6f 78 20 31 | 2f 38 20 73 65 63 6f 6e |approx 1|/8 secon|
|00001fd0| 64 0d 0a 64 65 6c 61 79 | 3a 09 6c 6f 6f 70 09 64 |d..delay|:.loop.d|
|00001fe0| 65 6c 61 79 09 3b 20 73 | 6f 75 6e 64 69 6e 67 20 |elay.; s|ounding |
|00001ff0| 74 6f 6e 65 20 77 68 69 | 6c 65 20 63 6f 75 6e 74 |tone whi|le count|
|00002000| 69 6e 67 0d 0a 09 6d 6f | 76 20 20 20 20 20 61 6c |ing...mo|v al|
|00002010| 2c 61 68 09 3b 20 72 65 | 73 74 6f 72 65 20 6f 72 |,ah.; re|store or|
|00002020| 69 67 69 6e 61 6c 20 70 | 6f 72 74 20 39 37 0d 0a |iginal p|ort 97..|
|00002030| 09 6f 75 74 20 20 20 20 | 20 39 37 2c 61 6c 09 3b |.out | 97,al.;|
|00002040| 20 73 74 6f 70 20 74 6f | 6e 65 0d 0a 09 70 6f 70 | stop to|ne...pop|
|00002050| 20 20 20 20 20 63 78 09 | 3b 20 72 65 73 74 6f 72 | cx.|; restor|
|00002060| 65 20 63 6f 75 6e 74 20 | 72 65 67 0d 0a 0d 0a 73 |e count |reg....s|
|00002070| 6b 69 70 5f 62 65 65 70 | 3a 09 63 61 6c 6c 09 72 |kip_beep|:.call.r|
|00002080| 65 73 65 74 09 3b 20 72 | 65 73 65 74 20 6b 79 62 |eset.; r|eset kyb|
|00002090| 64 20 61 6e 64 20 69 6e | 74 65 72 72 75 70 74 20 |d and in|terrupt |
|000020a0| 63 6f 6e 74 72 6f 6c 6c | 65 72 0d 0a 09 70 6f 70 |controll|er...pop|
|000020b0| 09 64 73 09 3b 20 72 65 | 73 74 6f 72 65 20 72 65 |.ds.; re|store re|
|000020c0| 67 73 0d 0a 09 61 73 73 | 75 6d 65 09 64 73 3a 6e |gs...ass|ume.ds:n|
|000020d0| 6f 74 68 69 6e 67 0d 0a | 09 70 6f 70 09 61 78 0d |othing..|.pop.ax.|
|000020e0| 0a 09 69 72 65 74 0d 0a | 0d 0a 72 65 73 65 74 09 |..iret..|..reset.|
|000020f0| 70 72 6f 63 0d 0a 09 69 | 6e 09 61 6c 2c 36 31 68 |proc...i|n.al,61h|
|00002100| 09 3b 20 72 65 73 65 74 | 20 6b 65 79 62 6f 61 72 |.; reset| keyboar|
|00002110| 64 0d 0a 09 6d 6f 76 09 | 61 68 2c 61 6c 0d 0a 09 |d...mov.|ah,al...|
|00002120| 6f 72 09 61 6c 2c 38 30 | 68 0d 0a 09 6f 75 74 09 |or.al,80|h...out.|
|00002130| 36 31 68 2c 61 6c 0d 0a | 09 6d 6f 76 09 61 6c 2c |61h,al..|.mov.al,|
|00002140| 61 68 0d 0a 09 6f 75 74 | 09 36 31 68 2c 61 6c 0d |ah...out|.61h,al.|
|00002150| 0a 09 6d 6f 76 09 61 6c | 2c 32 30 68 09 3b 20 73 |..mov.al|,20h.; s|
|00002160| 65 6e 64 20 65 6e 64 2d | 6f 66 2d 69 6e 74 65 72 |end end-|of-inter|
|00002170| 72 75 70 74 20 73 69 67 | 6e 61 6c 0d 0a 09 6f 75 |rupt sig|nal...ou|
|00002180| 74 09 32 30 68 2c 61 6c | 09 3b 20 20 74 6f 20 69 |t.20h,al|.; to i|
|00002190| 6e 74 65 72 72 75 70 74 | 20 63 6f 6e 74 72 6f 6c |nterrupt| control|
|000021a0| 6c 65 72 0d 0a 09 72 65 | 74 0d 0a 72 65 73 65 74 |ler...re|t..reset|
|000021b0| 20 65 6e 64 70 0d 0a 0d | 0a 09 61 73 73 75 6d 65 | endp...|..assume|
|000021c0| 09 64 73 3a 6e 6f 74 68 | 69 6e 67 0d 0a 63 61 73 |.ds:noth|ing..cas|
|000021d0| 73 5f 69 6e 74 3a 09 63 | 6d 70 09 61 78 2c 30 66 |s_int:.c|mp.ax,0f|
|000021e0| 66 30 30 68 09 3b 20 64 | 75 70 6c 69 63 61 74 65 |f00h.; d|uplicate|
|000021f0| 20 69 6e 73 74 61 6c 6c | 61 74 69 6f 6e 20 70 72 | install|ation pr|
|00002200| 6f 74 65 63 74 69 6f 6e | 0d 0a 09 6a 65 09 64 75 |otection|...je.du|
|00002210| 70 65 64 09 3b 20 79 65 | 73 0d 0a 09 6a 6d 70 09 |ped.; ye|s...jmp.|
|00002220| 63 61 73 73 09 3b 20 6e | 6f 2c 20 67 6f 74 6f 20 |cass.; n|o, goto |
|00002230| 42 49 4f 53 0d 0a 64 75 | 70 65 64 3a 09 6d 6f 76 |BIOS..du|ped:.mov|
|00002240| 09 61 78 2c 30 61 62 63 | 64 68 0d 0a 09 69 72 65 |.ax,0abc|dh...ire|
|00002250| 74 0d 0a 0d 0a 6e 6f 70 | 65 3a 09 6a 6d 70 09 6b |t....nop|e:.jmp.k|
|00002260| 79 62 64 5f 69 6f 09 3b | 20 67 6f 74 6f 20 42 49 |ybd_io.;| goto BI|
|00002270| 4f 53 0d 0a 0d 0a 09 61 | 73 73 75 6d 65 09 64 73 |OS.....a|ssume.ds|
|00002280| 3a 6e 6f 74 68 69 6e 67 | 0d 0a 6b 79 62 64 5f 69 |:nothing|..kybd_i|
|00002290| 6f 5f 69 6e 74 3a 0d 0a | 09 74 65 73 74 09 74 6f |o_int:..|.test.to|
|000022a0| 67 67 6c 65 2c 31 09 3b | 20 63 68 65 63 6b 20 69 |ggle,1.;| check i|
|000022b0| 66 20 65 6e 68 61 6e 63 | 65 64 20 6b 65 79 62 6f |f enhanc|ed keybo|
|000022c0| 61 72 64 20 65 6e 61 62 | 6c 65 64 0d 0a 09 6a 7a |ard enab|led...jz|
|000022d0| 09 6e 6f 70 65 09 3b 20 | 69 66 20 6e 6f 74 2c 20 |.nope.; |if not, |
|000022e0| 67 6f 74 6f 20 62 69 6f | 73 0d 0a 09 74 65 73 74 |goto bio|s...test|
|000022f0| 09 61 68 2c 61 68 09 3b | 20 63 68 65 63 6b 20 66 |.ah,ah.;| check f|
|00002300| 6f 72 20 41 48 20 3d 20 | 30 20 28 72 65 61 64 20 |or AH = |0 (read |
|00002310| 6b 65 79 29 0d 0a 09 6a | 6e 7a 09 6e 6f 70 65 09 |key)...j|nz.nope.|
|00002320| 3b 20 69 66 20 6e 6f 74 | 2c 20 67 6f 74 6f 20 62 |; if not|, goto b|
|00002330| 69 6f 73 0d 0a 09 70 75 | 73 68 66 09 09 3b 20 73 |ios...pu|shf..; s|
|00002340| 69 6d 75 6c 61 74 65 20 | 49 4e 54 20 31 36 68 0d |imulate |INT 16h.|
|00002350| 0a 09 63 61 6c 6c 09 6b | 79 62 64 5f 69 6f 0d 0a |..call.k|ybd_io..|
|00002360| 09 74 65 73 74 09 61 6c | 2c 61 6c 09 3b 20 63 68 |.test.al|,al.; ch|
|00002370| 65 63 6b 20 66 6f 72 20 | 7a 65 72 6f 20 63 68 61 |eck for |zero cha|
|00002380| 72 20 63 6f 64 65 0d 0a | 09 6a 7a 09 65 78 74 65 |r code..|.jz.exte|
|00002390| 6e 64 09 3b 20 63 6f 6e | 74 69 6e 75 65 20 69 66 |nd.; con|tinue if|
|000023a0| 20 65 78 74 65 6e 64 65 | 64 20 63 68 61 72 61 63 | extende|d charac|
|000023b0| 74 65 72 0d 0a 09 69 72 | 65 74 09 09 3b 20 72 65 |ter...ir|et..; re|
|000023c0| 74 75 72 6e 20 69 66 20 | 6e 6f 74 0d 0a 0d 0a 65 |turn if |not....e|
|000023d0| 78 74 65 6e 64 3a 09 63 | 6d 70 09 61 68 2c 35 33 |xtend:.c|mp.ah,53|
|000023e0| 68 09 3b 20 73 6b 69 70 | 20 70 72 65 64 65 66 69 |h.; skip| predefi|
|000023f0| 6e 65 64 20 65 78 74 2e | 20 66 75 6e 63 74 69 6f |ned ext.| functio|
|00002400| 6e 73 0d 0a 09 6a 61 09 | 65 78 74 09 3b 20 65 78 |ns...ja.|ext.; ex|
|00002410| 74 65 6e 64 65 64 20 66 | 75 6e 63 74 69 6f 6e 20 |tended f|unction |
|00002420| 72 6f 75 74 69 6e 65 28 | 73 29 0d 0a 62 61 63 6b |routine(|s)..back|
|00002430| 3a 09 69 72 65 74 09 09 | 3b 20 72 65 74 75 72 6e |:.iret..|; return|
|00002440| 20 69 66 20 70 72 65 64 | 65 66 69 6e 65 64 0d 0a | if pred|efined..|
|00002450| 0d 0a 3b 20 62 72 61 6e | 63 68 20 6d 61 64 65 20 |..; bran|ch made |
|00002460| 69 66 20 63 6f 64 65 20 | 67 72 65 61 74 65 72 20 |if code |greater |
|00002470| 74 68 61 6e 20 70 72 65 | 64 65 66 69 6e 65 64 20 |than pre|defined |
|00002480| 28 33 2d 35 33 68 29 0d | 0a 65 78 74 3a 09 63 6d |(3-53h).|.ext:.cm|
|00002490| 70 09 61 68 2c 39 34 09 | 3b 20 63 68 65 63 6b 20 |p.ah,94.|; check |
|000024a0| 66 6f 72 20 46 32 31 20 | 28 43 54 52 4c 2d 46 31 |for F21 |(CTRL-F1|
|000024b0| 29 0d 0a 09 6a 62 09 62 | 61 63 6b 09 3b 20 65 6e |)...jb.b|ack.; en|
|000024c0| 64 20 69 66 20 62 65 6c | 6f 77 0d 0a 09 63 6d 70 |d if bel|ow...cmp|
|000024d0| 09 61 68 2c 31 30 33 09 | 3b 20 43 54 52 4c 2d 46 |.ah,103.|; CTRL-F|
|000024e0| 31 30 20 2d 20 36 37 68 | 0d 0a 09 6a 61 09 6e 65 |10 - 67h|...ja.ne|
|000024f0| 78 74 09 3b 20 67 6f 74 | 6f 20 6e 65 78 74 20 66 |xt.; got|o next f|
|00002500| 75 6e 63 74 69 6f 6e 0d | 0a 0d 0a 09 70 75 73 68 |unction.|....push|
|00002510| 09 64 78 09 3b 20 73 61 | 76 65 20 44 58 0d 0a 09 |.dx.; sa|ve DX...|
|00002520| 70 75 73 68 09 61 78 09 | 3b 20 73 61 76 65 20 73 |push.ax.|; save s|
|00002530| 63 61 6e 20 63 6f 64 65 | 0d 0a 0d 0a 09 6d 6f 76 |can code|.....mov|
|00002540| 09 61 68 2c 32 09 3b 20 | 72 65 61 64 20 70 72 69 |.ah,2.; |read pri|
|00002550| 6e 74 65 72 20 73 74 61 | 74 75 73 0d 0a 09 78 6f |nter sta|tus...xo|
|00002560| 72 09 64 78 2c 64 78 09 | 3b 20 7a 65 72 6f 20 44 |r.dx,dx.|; zero D|
|00002570| 58 20 2d 20 4c 50 54 31 | 0d 0a 09 69 6e 74 09 31 |X - LPT1|...int.1|
|00002580| 37 68 09 3b 20 70 72 69 | 6e 74 65 72 20 49 2f 4f |7h.; pri|nter I/O|
|00002590| 0d 0a 09 78 6f 72 09 61 | 68 2c 33 30 68 09 3b 20 |...xor.a|h,30h.; |
|000025a0| 63 68 65 63 6b 20 66 6f | 72 20 4f 46 46 4c 49 4e |check fo|r OFFLIN|
|000025b0| 45 0d 0a 09 6a 7a 09 6f | 66 66 6c 69 6e 65 09 3b |E...jz.o|ffline.;|
|000025c0| 20 73 6b 69 70 20 62 65 | 65 70 2c 20 70 72 65 70 | skip be|ep, prep|
|000025d0| 61 72 65 20 66 6f 72 20 | 65 78 69 74 0d 0a 0d 0a |are for |exit....|
|000025e0| 09 70 6f 70 09 61 78 09 | 3b 20 72 65 74 72 69 65 |.pop.ax.|; retrie|
|000025f0| 76 65 20 73 63 61 6e 20 | 63 6f 64 65 0d 0a 09 70 |ve scan |code...p|
|00002600| 75 73 68 09 62 78 0d 0a | 09 70 75 73 68 09 63 78 |ush.bx..|.push.cx|
|00002610| 0d 0a 09 73 75 62 09 61 | 68 2c 39 34 09 3b 20 62 |...sub.a|h,94.; b|
|00002620| 72 69 6e 67 20 73 63 61 | 6e 20 63 6f 64 65 20 64 |ring sca|n code d|
|00002630| 6f 77 6e 20 74 6f 20 30 | 2d 39 0d 0a 3b 20 6d 75 |own to 0|-9..; mu|
|00002640| 6c 74 20 41 48 20 62 79 | 20 33 0d 0a 09 6d 6f 76 |lt AH by| 3...mov|
|00002650| 09 62 6c 2c 61 68 09 3b | 20 73 61 76 65 20 61 68 |.bl,ah.;| save ah|
|00002660| 0d 0a 09 73 68 6c 09 61 | 68 2c 31 09 3b 20 6d 75 |...shl.a|h,1.; mu|
|00002670| 6c 74 20 62 79 20 32 0d | 0a 09 61 64 64 09 62 6c |lt by 2.|..add.bl|
|00002680| 2c 61 68 09 3b 20 20 6d | 75 6c 74 20 62 79 20 33 |,ah.; m|ult by 3|
|00002690| 0d 0a 09 78 6f 72 09 62 | 68 2c 62 68 09 3b 20 7a |...xor.b|h,bh.; z|
|000026a0| 65 72 6f 20 42 48 0d 0a | 09 61 64 64 09 62 78 2c |ero BH..|.add.bx,|
|000026b0| 6f 66 66 73 65 74 20 50 | 52 4e 54 5f 42 55 46 09 |offset P|RNT_BUF.|
|000026c0| 3b 20 61 64 64 20 6d 65 | 6d 20 6c 6f 63 20 74 6f |; add me|m loc to|
|000026d0| 20 6f 66 66 73 65 74 0d | 0a 09 6d 6f 76 09 63 78 | offset.|..mov.cx|
|000026e0| 2c 33 09 3b 20 33 2d 63 | 68 61 72 20 70 72 69 6e |,3.; 3-c|har prin|
|000026f0| 74 65 72 20 6f 75 74 70 | 75 74 0d 0a 09 78 6f 72 |ter outp|ut...xor|
|00002700| 09 64 78 2c 64 78 09 3b | 20 70 72 69 6e 74 65 72 |.dx,dx.;| printer|
|00002710| 20 7a 65 72 6f 0d 0a 0d | 0a 6c 6f 6f 70 31 3a 09 | zero...|.loop1:.|
|00002720| 6d 6f 76 09 61 6c 2c 33 | 09 3b 20 66 75 6c 6c 20 |mov.al,3|.; full |
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|00002740| 63 6c 09 3b 20 73 75 62 | 20 63 6f 75 6e 74 20 66 |cl.; sub| count f|
|00002750| 72 6f 6d 20 66 75 6c 6c | 20 6f 66 66 73 65 74 0d |rom full| offset.|
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|00002770| 75 66 09 3b 20 67 65 74 | 20 64 61 74 61 20 69 6e |uf.; get| data in|
|00002780| 20 41 4c 0d 0a 09 63 6d | 70 09 61 6c 2c 30 66 66 | AL...cm|p.al,0ff|
|00002790| 68 09 3b 20 63 68 65 63 | 6b 20 66 6f 72 20 65 6e |h.; chec|k for en|
|000027a0| 64 2d 6f 66 2d 73 74 72 | 69 6e 67 0d 0a 09 6a 65 |d-of-str|ing...je|
|000027b0| 09 62 65 65 70 09 3b 20 | 20 62 65 65 70 20 69 66 |.beep.; | beep if|
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|000027e0| 6e 74 20 63 68 61 72 0d | 0a 09 69 6e 74 09 31 37 |nt char.|..int.17|
|000027f0| 68 09 3b 20 42 49 4f 53 | 20 70 72 69 6e 74 65 72 |h.; BIOS| printer|
|00002800| 20 49 2f 4f 0d 0a 09 6c | 6f 6f 70 09 6c 6f 6f 70 | I/O...l|oop.loop|
|00002810| 31 09 3b 20 6e 65 78 74 | 20 63 68 61 72 0d 0a 0d |1.; next| char...|
|00002820| 0a 62 65 65 70 3a 09 63 | 6d 70 09 63 6c 2c 33 09 |.beep:.c|mp.cl,3.|
|00002830| 3b 20 63 68 65 63 6b 20 | 66 6f 72 20 6e 75 6c 6c |; check |for null|
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|00002980| 66 6f 72 20 6e 65 78 74 | 20 6b 65 79 0d 0a 0d 0a |for next| key....|
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|00003430| 09 64 78 2c 64 78 09 3b | 20 75 70 70 65 72 20 6c |.dx,dx.;| upper l|
|00003440| 65 66 74 20 72 6f 77 2f | 63 6f 6c 75 6d 6e 0d 0a |eft row/|column..|
|00003450| 09 6d 6f 76 09 61 68 2c | 32 09 3b 20 73 65 74 20 |.mov.ah,|2.; set |
|00003460| 63 75 72 73 6f 72 20 70 | 6f 73 69 74 69 6f 6e 0d |cursor p|osition.|
|00003470| 0a 09 69 6e 74 09 31 30 | 68 0d 0a 09 6d 6f 76 09 |..int.10|h...mov.|
|00003480| 64 78 2c 6f 66 66 73 65 | 74 20 68 65 6c 70 5f 74 |dx,offse|t help_t|
|00003490| 65 78 74 09 3b 20 67 65 | 74 20 61 64 64 72 65 73 |ext.; ge|t addres|
|000034a0| 73 20 6f 66 20 68 65 6c | 70 20 73 63 72 65 65 6e |s of hel|p screen|
|000034b0| 0d 0a 09 6d 6f 76 09 61 | 68 2c 39 09 3b 20 44 4f |...mov.a|h,9.; DO|
|000034c0| 53 20 70 72 69 6e 74 20 | 73 74 72 69 6e 67 0d 0a |S print |string..|
|000034d0| 09 69 6e 74 09 32 31 68 | 0d 0a 09 6d 6f 76 09 61 |.int.21h|...mov.a|
|000034e0| 78 2c 30 66 66 30 30 68 | 09 3b 20 63 68 65 63 6b |x,0ff00h|.; check|
|000034f0| 20 28 61 67 61 69 6e 29 | 20 66 6f 72 20 64 75 70 | (again)| for dup|
|00003500| 6c 69 63 61 74 65 20 69 | 6e 73 74 61 6c 6c 61 74 |licate i|nstallat|
|00003510| 69 6f 6e 0d 0a 09 69 6e | 74 09 31 35 68 0d 0a 09 |ion...in|t.15h...|
|00003520| 63 6d 70 09 61 78 2c 30 | 61 62 63 64 68 0d 0a 09 |cmp.ax,0|abcdh...|
|00003530| 6a 65 09 73 6b 69 70 5f | 70 72 6e 74 09 3b 20 69 |je.skip_|prnt.; i|
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|00003550| 74 69 6e 67 20 69 6e 73 | 74 61 6c 6c 20 69 6e 73 |ting ins|tall ins|
|00003560| 74 72 75 63 74 69 6f 6e | 73 0d 0a 09 6d 6f 76 09 |truction|s...mov.|
|00003570| 64 78 2c 6f 66 66 73 65 | 74 20 6e 6f 74 5f 79 65 |dx,offse|t not_ye|
|00003580| 74 09 3b 20 6d 65 73 73 | 61 67 65 20 2d 20 74 79 |t.; mess|age - ty|
|00003590| 70 65 20 6e 65 77 69 6e | 69 74 20 69 6e 73 74 61 |pe newin|it insta|
|000035a0| 6c 6c 0d 0a 09 6d 6f 76 | 09 61 68 2c 39 09 3b 20 |ll...mov|.ah,9.; |
|000035b0| 44 4f 53 20 70 72 69 6e | 74 20 73 74 72 69 6e 67 |DOS prin|t string|
|000035c0| 0d 0a 09 69 6e 74 09 32 | 31 68 0d 0a 73 6b 69 70 |...int.2|1h..skip|
|000035d0| 5f 70 72 6e 74 3a 09 69 | 6e 74 09 32 30 68 09 3b |_prnt:.i|nt.20h.;|
|000035e0| 20 74 65 72 6d 69 6e 61 | 74 65 0d 0a 0d 0a 69 6e | termina|te....in|
|000035f0| 69 74 5f 76 65 63 74 6f | 72 73 3a 0d 0a 09 6d 6f |it_vecto|rs:...mo|
|00003600| 76 09 64 73 2c 62 69 6f | 73 5f 64 61 74 0d 0a 09 |v.ds,bio|s_dat...|
|00003610| 61 73 73 75 6d 65 09 64 | 73 3a 62 69 6f 73 5f 64 |assume.d|s:bios_d|
|00003620| 61 74 61 0d 0a 09 6d 6f | 76 09 61 6c 2c 6b 62 5f |ata...mo|v.al,kb_|
|00003630| 66 6c 61 67 09 3b 20 67 | 65 74 20 6b 65 79 62 6f |flag.; g|et keybo|
|00003640| 61 72 64 20 73 74 61 74 | 75 73 20 62 79 74 65 0d |ard stat|us byte.|
|00003650| 0a 09 78 6f 72 09 61 6c | 2c 30 30 30 30 30 30 31 |..xor.al|,0000001|
|00003660| 31 62 09 3b 20 63 68 65 | 63 6b 20 69 66 20 62 6f |1b.; che|ck if bo|
|00003670| 74 68 20 73 68 69 66 74 | 20 6b 65 79 73 20 70 72 |th shift| keys pr|
|00003680| 65 73 73 65 64 0d 0a 09 | 6a 6e 7a 09 63 6f 6e 74 |essed...|jnz.cont|
|00003690| 69 6e 75 65 09 3b 20 69 | 66 20 6e 6f 74 2c 20 63 |inue.; i|f not, c|
|000036a0| 6f 6e 74 69 6e 75 65 20 | 77 69 74 68 20 69 6e 73 |ontinue |with ins|
|000036b0| 74 61 6c 6c 61 74 69 6f | 6e 0d 0a 09 6d 6f 76 09 |tallatio|n...mov.|
|000036c0| 61 78 2c 34 63 61 62 68 | 09 3b 20 44 4f 53 20 45 |ax,4cabh|.; DOS E|
|000036d0| 58 49 54 20 66 75 6e 63 | 74 69 6f 6e 2c 20 45 52 |XIT func|tion, ER|
|000036e0| 52 4f 52 4c 45 56 45 4c | 20 3d 20 58 27 41 42 27 |RORLEVEL| = X'AB'|
|000036f0| 0d 0a 09 69 6e 74 09 32 | 31 68 0d 0a 0d 0a 63 6f |...int.2|1h....co|
|00003700| 6e 74 69 6e 75 65 3a 09 | 6d 6f 76 09 61 78 2c 63 |ntinue:.|mov.ax,c|
|00003710| 73 09 3b 20 73 65 74 20 | 64 61 74 61 20 73 65 67 |s.; set |data seg|
|00003720| 6d 65 6e 74 20 74 6f 20 | 63 6f 64 65 20 73 65 67 |ment to |code seg|
|00003730| 6d 65 6e 74 0d 0a 09 6d | 6f 76 09 64 73 2c 61 78 |ment...m|ov.ds,ax|
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|00003750| 67 0d 0a 09 6d 6f 76 09 | 63 6f 64 65 5f 73 65 67 |g...mov.|code_seg|
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|00003770| 73 65 67 6d 65 6e 74 20 | 66 6f 72 20 72 65 73 69 |segment |for resi|
|00003780| 64 65 6e 74 20 72 6f 75 | 74 69 6e 65 0d 0a 09 78 |dent rou|tine...x|
|00003790| 6f 72 09 63 78 2c 63 78 | 09 3b 20 7a 65 72 6f 20 |or.cx,cx|.; zero |
|000037a0| 43 58 0d 0a 09 6d 6f 76 | 09 63 6c 2c 70 61 72 6d |CX...mov|.cl,parm|
|000037b0| 5f 63 6e 74 09 3b 20 67 | 65 74 20 6e 75 6d 62 65 |_cnt.; g|et numbe|
|000037c0| 72 20 6f 66 20 70 61 72 | 61 6d 65 74 65 72 73 0d |r of par|ameters.|
|000037d0| 0a 09 6a 63 78 7a 09 70 | 72 69 6e 74 5f 68 65 6c |..jcxz.p|rint_hel|
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|000037f0| 63 72 65 65 6e 0d 0a 09 | 6d 6f 76 09 73 69 2c 6f |creen...|mov.si,o|
|00003800| 66 66 73 65 74 20 70 61 | 72 6d 5f 64 61 74 61 09 |ffset pa|rm_data.|
|00003810| 3b 20 73 74 61 72 74 20 | 6f 66 20 70 61 72 61 6d |; start |of param|
|00003820| 65 74 65 72 20 6c 69 6e | 65 0d 0a 09 63 6c 64 09 |eter lin|e...cld.|
|00003830| 09 3b 20 63 6c 65 61 72 | 20 44 46 20 74 6f 20 69 |.; clear| DF to i|
|00003840| 6e 63 72 65 6d 65 6e 74 | 20 53 49 0d 0a 6c 6f 6f |ncrement| SI..loo|
|00003850| 70 32 3a 09 6c 6f 64 73 | 09 70 61 72 6d 5f 64 61 |p2:.lods|.parm_da|
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|00003870| 6f 6d 20 70 61 72 6d 5f | 64 61 74 61 0d 0a 09 63 |om parm_|data...c|
|00003880| 6d 70 09 61 6c 2c 22 5a | 22 2b 31 09 3b 20 63 68 |mp.al,"Z|"+1.; ch|
|00003890| 65 63 6b 20 69 66 20 6c | 6f 77 65 72 20 63 61 73 |eck if l|ower cas|
|000038a0| 65 0d 0a 09 6a 62 09 6c | 70 32 0d 0a 09 73 75 62 |e...jb.l|p2...sub|
|000038b0| 09 61 6c 2c 22 61 22 2d | 22 41 22 09 3b 20 63 6f |.al,"a"-|"A".; co|
|000038c0| 6e 76 65 72 74 20 74 6f | 20 6c 6f 77 65 72 20 63 |nvert to| lower c|
|000038d0| 61 73 65 0d 0a 09 6d 6f | 76 09 5b 73 69 2d 31 5d |ase...mo|v.[si-1]|
|000038e0| 2c 61 6c 09 3b 20 70 75 | 74 20 62 61 63 6b 20 69 |,al.; pu|t back i|
|000038f0| 6e 74 6f 20 70 61 72 61 | 6d 20 6c 69 6e 65 09 0d |nto para|m line..|
|00003900| 0a 6c 70 32 3a 09 6c 6f | 6f 70 09 6c 6f 6f 70 32 |.lp2:.lo|op.loop2|
|00003910| 09 3b 20 67 65 74 20 6e | 65 78 74 20 63 68 61 72 |.; get n|ext char|
|00003920| 0d 0a 0d 0a 63 68 65 63 | 6b 3a 09 6d 6f 76 09 64 |....chec|k:.mov.d|
|00003930| 69 2c 6f 66 66 73 65 74 | 20 70 61 72 6d 5f 64 61 |i,offset| parm_da|
|00003940| 74 61 0d 0a 09 6d 6f 76 | 09 61 6c 2c 22 49 22 09 |ta...mov|.al,"I".|
|00003950| 3b 20 73 65 61 72 63 68 | 20 66 6f 72 20 22 49 22 |; search| for "I"|
|00003960| 0d 0a 09 6d 6f 76 09 63 | 6c 2c 70 61 72 6d 5f 63 |...mov.c|l,parm_c|
|00003970| 6e 74 09 3b 20 6e 75 6d | 62 65 72 20 6f 66 20 63 |nt.; num|ber of c|
|00003980| 68 61 72 61 63 74 65 72 | 73 20 74 6f 20 73 65 61 |haracter|s to sea|
|00003990| 72 63 68 0d 0a 09 72 65 | 70 6e 65 20 73 63 61 73 |rch...re|pne scas|
|000039a0| 62 09 3b 20 73 63 61 6e | 20 70 61 72 61 6d 65 74 |b.; scan| paramet|
|000039b0| 65 72 20 6c 69 6e 65 0d | 0a 09 6a 6e 65 09 70 72 |er line.|..jne.pr|
|000039c0| 69 6e 74 5f 68 65 6c 70 | 09 3b 20 70 72 69 6e 74 |int_help|.; print|
|000039d0| 20 68 65 6c 70 20 73 63 | 72 65 65 6e 20 69 66 20 | help sc|reen if |
|000039e0| 6e 6f 74 20 66 6f 75 6e | 64 0d 0a 09 6d 6f 76 09 |not foun|d...mov.|
|000039f0| 73 69 2c 31 20 2b 20 6f | 66 66 73 65 74 20 6b 65 |si,1 + o|ffset ke|
|00003a00| 79 09 3b 20 22 49 4e 53 | 54 41 4c 4c 22 20 62 75 |y.; "INS|TALL" bu|
|00003a10| 74 20 70 61 73 74 20 74 | 68 65 20 22 49 22 0d 0a |t past t|he "I"..|
|00003a20| 09 61 73 73 75 6d 65 09 | 65 73 3a 63 73 65 67 0d |.assume.|es:cseg.|
|00003a30| 0a 09 72 65 70 6e 65 20 | 63 6d 70 73 20 70 61 72 |..repne |cmps par|
|00003a40| 6d 5f 64 61 74 61 2c 6b | 65 79 09 3b 20 63 68 65 |m_data,k|ey.; che|
|00003a50| 63 6b 20 66 6f 72 20 6b | 65 79 20 69 6e 20 70 61 |ck for k|ey in pa|
|00003a60| 72 61 6d 65 74 65 72 20 | 6c 69 6e 65 0d 0a 09 6a |rameter |line...j|
|00003a70| 6e 65 09 70 72 69 6e 74 | 5f 68 65 6c 70 09 3b 20 |ne.print|_help.; |
|00003a80| 69 66 20 6e 6f 74 20 66 | 6f 75 6e 64 2c 20 70 72 |if not f|ound, pr|
|00003a90| 69 6e 74 20 68 65 6c 70 | 20 73 63 72 65 65 6e 0d |int help| screen.|
|00003aa0| 0a 09 6d 6f 76 09 61 78 | 2c 30 66 66 30 30 68 09 |..mov.ax|,0ff00h.|
|00003ab0| 3b 20 69 66 20 66 6f 75 | 6e 64 2c 20 63 68 65 63 |; if fou|nd, chec|
|00003ac0| 6b 20 66 6f 72 20 70 72 | 65 76 20 69 6e 73 74 61 |k for pr|ev insta|
|00003ad0| 6c 6c 0d 0a 09 69 6e 74 | 09 31 35 68 09 3b 20 63 |ll...int|.15h.; c|
|00003ae0| 61 73 73 65 74 74 65 20 | 28 73 6e 69 63 6b 65 72 |assette |(snicker|
|00003af0| 21 29 20 69 6e 74 65 72 | 72 75 70 74 0d 0a 09 63 |!) inter|rupt...c|
|00003b00| 6d 70 09 61 78 2c 30 61 | 62 63 64 68 09 3b 20 64 |mp.ax,0a|bcdh.; d|
|00003b10| 75 70 6c 69 63 61 74 65 | 20 69 6e 73 74 61 6c 6c |uplicate| install|
|00003b20| 61 74 69 6f 6e 20 63 6f | 64 65 0d 0a 09 6a 6e 65 |ation co|de...jne|
|00003b30| 09 69 6e 73 74 61 6c 6c | 09 3b 20 66 75 6c 6c 20 |.install|.; full |
|00003b40| 73 70 65 65 64 20 61 68 | 65 61 64 0d 0a 09 6d 6f |speed ah|ead...mo|
|00003b50| 76 09 64 78 2c 6f 66 66 | 73 65 74 20 61 6c 72 65 |v.dx,off|set alre|
|00003b60| 61 64 79 09 3b 20 65 72 | 72 6f 72 20 6d 65 73 73 |ady.; er|ror mess|
|00003b70| 61 67 65 0d 0a 09 6d 6f | 76 09 61 68 2c 39 09 3b |age...mo|v.ah,9.;|
|00003b80| 20 44 4f 53 20 70 72 69 | 6e 74 20 73 74 72 69 6e | DOS pri|nt strin|
|00003b90| 67 0d 0a 09 69 6e 74 09 | 32 31 68 0d 0a 09 69 6e |g...int.|21h...in|
|00003ba0| 74 09 32 30 68 09 3b 20 | 62 79 65 2d 62 79 65 0d |t.20h.; |bye-bye.|
|00003bb0| 0a 0d 0a 69 6e 73 74 61 | 6c 6c 3a 09 6d 6f 76 09 |...insta|ll:.mov.|
|00003bc0| 61 78 2c 32 09 3b 20 41 | 48 3d 30 20 2d 20 73 65 |ax,2.; A|H=0 - se|
|00003bd0| 74 20 76 69 64 65 6f 20 | 6d 6f 64 65 0d 0a 09 09 |t video |mode....|
|00003be0| 09 3b 20 41 4c 3d 32 20 | 2d 20 38 30 20 63 6f 6c |.; AL=2 |- 80 col|
|00003bf0| 20 6d 6f 6e 6f 0d 0a 09 | 69 6e 74 09 31 30 68 0d | mono...|int.10h.|
|00003c00| 0a 09 6d 6f 76 09 61 78 | 2c 33 35 30 35 68 09 3b |..mov.ax|,3505h.;|
|00003c10| 20 67 65 74 20 69 6e 74 | 20 76 65 63 74 6f 72 20 | get int| vector |
|00003c20| 66 6f 72 20 49 4e 54 20 | 35 0d 0a 09 69 6e 74 09 |for INT |5...int.|
|00003c30| 32 31 68 0d 0a 09 6d 6f | 76 09 77 6f 72 64 20 70 |21h...mo|v.word p|
|00003c40| 74 72 20 70 72 74 73 63 | 2c 62 78 09 3b 20 73 61 |tr prtsc|,bx.; sa|
|00003c50| 76 65 20 72 6f 75 74 69 | 6e 65 20 6f 66 66 73 65 |ve routi|ne offse|
|00003c60| 74 0d 0a 09 6d 6f 76 09 | 77 6f 72 64 20 70 74 72 |t...mov.|word ptr|
|00003c70| 20 70 72 74 73 63 5b 32 | 5d 2c 65 73 09 3b 20 73 | prtsc[2|],es.; s|
|00003c80| 61 76 65 20 72 6f 75 74 | 69 6e 65 20 73 65 67 6d |ave rout|ine segm|
|00003c90| 65 6e 74 0d 0a 09 6d 6f | 76 09 64 78 2c 6f 66 66 |ent...mo|v.dx,off|
|00003ca0| 73 65 74 20 70 72 74 73 | 63 5f 69 6e 74 09 3b 20 |set prts|c_int.; |
|00003cb0| 6f 66 66 73 65 74 20 6f | 66 20 6e 65 77 20 72 6f |offset o|f new ro|
|00003cc0| 75 74 69 6e 65 0d 0a 09 | 09 09 3b 20 44 53 20 3d |utine...|..; DS =|
|00003cd0| 20 43 53 20 61 62 6f 76 | 65 0d 0a 09 6d 6f 76 09 | CS abov|e...mov.|
|00003ce0| 61 68 2c 32 35 68 09 3b | 20 73 65 74 20 69 6e 74 |ah,25h.;| set int|
|00003cf0| 20 76 65 63 74 6f 72 20 | 66 6f 72 20 49 4e 54 20 | vector |for INT |
|00003d00| 35 0d 0a 09 69 6e 74 09 | 32 31 68 0d 0a 0d 0a 09 |5...int.|21h.....|
|00003d10| 6d 6f 76 09 61 78 2c 33 | 35 30 39 68 09 3b 20 67 |mov.ax,3|509h.; g|
|00003d20| 65 74 20 69 6e 74 20 76 | 65 63 74 6f 72 20 66 6f |et int v|ector fo|
|00003d30| 72 20 49 4e 54 20 39 0d | 0a 09 69 6e 74 09 32 31 |r INT 9.|..int.21|
|00003d40| 68 0d 0a 09 6d 6f 76 09 | 77 6f 72 64 20 70 74 72 |h...mov.|word ptr|
|00003d50| 20 6b 79 62 64 2c 62 78 | 09 3b 20 73 61 76 65 20 | kybd,bx|.; save |
|00003d60| 6f 66 66 73 65 74 0d 0a | 09 6d 6f 76 09 77 6f 72 |offset..|.mov.wor|
|00003d70| 64 20 70 74 72 20 6b 79 | 62 64 5b 32 5d 2c 65 73 |d ptr ky|bd[2],es|
|00003d80| 09 3b 20 73 61 76 65 20 | 73 65 67 6d 65 6e 74 0d |.; save |segment.|
|00003d90| 0a 09 6d 6f 76 09 64 78 | 2c 6f 66 66 73 65 74 20 |..mov.dx|,offset |
|00003da0| 6b 79 62 64 5f 69 6e 74 | 09 3b 20 6f 66 66 73 65 |kybd_int|.; offse|
|00003db0| 74 20 6f 66 20 75 73 65 | 72 20 72 6f 75 74 69 6e |t of use|r routin|
|00003dc0| 65 0d 0a 09 6d 6f 76 09 | 61 68 2c 32 35 68 09 3b |e...mov.|ah,25h.;|
|00003dd0| 20 73 65 74 20 69 6e 74 | 20 76 65 63 74 6f 72 0d | set int| vector.|
|00003de0| 0a 09 69 6e 74 09 32 31 | 68 0d 0a 0d 0a 09 6d 6f |..int.21|h.....mo|
|00003df0| 76 09 61 78 2c 33 35 31 | 35 68 09 3b 20 67 65 74 |v.ax,351|5h.; get|
|00003e00| 20 69 6e 74 20 76 65 63 | 74 6f 72 20 66 6f 72 20 | int vec|tor for |
|00003e10| 49 4e 54 20 31 35 68 0d | 0a 09 69 6e 74 09 32 31 |INT 15h.|..int.21|
|00003e20| 68 0d 0a 09 6d 6f 76 09 | 77 6f 72 64 20 70 74 72 |h...mov.|word ptr|
|00003e30| 20 63 61 73 73 2c 62 78 | 09 3b 20 73 61 76 65 20 | cass,bx|.; save |
|00003e40| 6f 66 66 73 65 74 0d 0a | 09 6d 6f 76 09 77 6f 72 |offset..|.mov.wor|
|00003e50| 64 20 70 74 72 20 63 61 | 73 73 5b 32 5d 2c 65 73 |d ptr ca|ss[2],es|
|00003e60| 09 3b 20 73 61 76 65 20 | 73 65 67 6d 65 6e 74 0d |.; save |segment.|
|00003e70| 0a 09 6d 6f 76 09 64 78 | 2c 6f 66 66 73 65 74 20 |..mov.dx|,offset |
|00003e80| 63 61 73 73 5f 69 6e 74 | 09 3b 20 6f 66 66 73 65 |cass_int|.; offse|
|00003e90| 74 20 6f 66 20 75 73 65 | 72 20 72 6f 75 74 69 6e |t of use|r routin|
|00003ea0| 65 0d 0a 09 6d 6f 76 09 | 61 68 2c 32 35 68 09 3b |e...mov.|ah,25h.;|
|00003eb0| 20 73 65 74 20 69 6e 74 | 20 76 65 63 74 6f 72 0d | set int| vector.|
|00003ec0| 0a 09 69 6e 74 09 32 31 | 68 0d 0a 0d 0a 09 6d 6f |..int.21|h.....mo|
|00003ed0| 76 09 61 78 2c 33 35 31 | 36 68 09 3b 20 67 65 74 |v.ax,351|6h.; get|
|00003ee0| 20 69 6e 74 20 76 65 63 | 74 6f 72 20 66 6f 72 20 | int vec|tor for |
|00003ef0| 49 4e 54 20 31 36 68 0d | 0a 09 69 6e 74 09 32 31 |INT 16h.|..int.21|
|00003f00| 68 0d 0a 09 6d 6f 76 09 | 77 6f 72 64 20 70 74 72 |h...mov.|word ptr|
|00003f10| 20 6b 79 62 64 5f 69 6f | 2c 62 78 09 3b 20 73 61 | kybd_io|,bx.; sa|
|00003f20| 76 65 20 6f 66 66 73 65 | 74 0d 0a 09 6d 6f 76 09 |ve offse|t...mov.|
|00003f30| 77 6f 72 64 20 70 74 72 | 20 6b 79 62 64 5f 69 6f |word ptr| kybd_io|
|00003f40| 5b 32 5d 2c 65 73 09 3b | 20 73 61 76 65 20 73 65 |[2],es.;| save se|
|00003f50| 67 6d 65 6e 74 0d 0a 09 | 6d 6f 76 20 64 78 2c 20 |gment...|mov dx, |
|00003f60| 6f 66 66 73 65 74 20 6b | 79 62 64 5f 69 6f 5f 69 |offset k|ybd_io_i|
|00003f70| 6e 74 09 3b 20 6f 66 66 | 73 65 74 20 6f 66 20 75 |nt.; off|set of u|
|00003f80| 73 65 72 20 72 6f 75 74 | 69 6e 65 0d 0a 09 6d 6f |ser rout|ine...mo|
|00003f90| 76 09 61 68 2c 32 35 68 | 09 3b 20 73 65 74 20 69 |v.ah,25h|.; set i|
|00003fa0| 6e 74 20 76 65 63 74 6f | 72 0d 0a 09 69 6e 74 09 |nt vecto|r...int.|
|00003fb0| 32 31 68 0d 0a 0d 0a 09 | 6d 6f 76 09 64 78 2c 6f |21h.....|mov.dx,o|
|00003fc0| 66 66 73 65 74 20 69 6e | 73 74 61 6c 6c 65 64 09 |ffset in|stalled.|
|00003fd0| 3b 20 63 6f 6d 70 6c 65 | 74 65 64 20 6d 65 73 73 |; comple|ted mess|
|00003fe0| 61 67 65 0d 0a 09 6d 6f | 76 09 61 68 2c 39 09 3b |age...mo|v.ah,9.;|
|00003ff0| 20 44 4f 53 20 70 72 69 | 6e 74 20 73 74 72 69 6e | DOS pri|nt strin|
|00004000| 67 0d 0a 09 69 6e 74 09 | 32 31 68 0d 0a 09 6d 6f |g...int.|21h...mo|
|00004010| 76 09 64 78 2c 6f 66 66 | 73 65 74 20 65 6e 64 5f |v.dx,off|set end_|
|00004020| 6f 66 5f 72 65 73 69 64 | 65 6e 74 0d 0a 09 69 6e |of_resid|ent...in|
|00004030| 74 09 32 37 68 09 3b 20 | 74 65 72 6d 69 6e 61 74 |t.27h.; |terminat|
|00004040| 65 2c 20 72 65 6d 61 69 | 6e 20 72 65 73 69 64 65 |e, remai|n reside|
|00004050| 6e 74 0d 0a 0d 0a 6b 65 | 79 09 64 62 09 22 49 4e |nt....ke|y.db."IN|
|00004060| 53 54 41 4c 4c 22 09 3b | 20 69 6e 73 74 61 6c 6c |STALL".;| install|
|00004070| 61 74 69 6f 6e 20 74 65 | 78 74 20 6b 65 79 0d 0a |ation te|xt key..|
|00004080| 0d 0a 61 6c 72 65 61 64 | 79 09 64 62 09 31 33 2c |..alread|y.db.13,|
|00004090| 31 30 2c 31 30 2c 39 2c | 39 0d 0a 09 64 62 09 22 |10,10,9,|9...db."|
|000040a0| 54 68 69 73 20 75 74 69 | 6c 69 74 79 20 61 6c 72 |This uti|lity alr|
|000040b0| 65 61 64 79 20 72 65 73 | 69 64 65 6e 74 2e 22 2c |eady res|ident.",|
|000040c0| 31 33 2c 37 2c 31 30 2c | 31 30 2c 22 24 22 0d 0a |13,7,10,|10,"$"..|
|000040d0| 0d 0a 69 6e 73 74 61 6c | 6c 65 64 09 64 62 09 39 |..instal|led.db.9|
|000040e0| 2c 39 2c 22 4e 45 57 49 | 4e 49 54 20 69 73 20 75 |,9,"NEWI|NIT is u|
|000040f0| 70 20 61 6e 64 20 72 75 | 6e 6e 69 6e 67 2e 22 2c |p and ru|nning.",|
|00004100| 31 30 2c 31 30 2c 22 24 | 22 0d 0a 0d 0a 68 65 6c |10,10,"$|"....hel|
|00004110| 70 5f 74 65 78 74 3a 09 | 64 62 09 22 54 68 69 73 |p_text:.|db."This|
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|000054f0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00005500| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
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|00005590| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000055a0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
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|00005a60| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00005a70| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00005a80| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
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|00005b10| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00005b20| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00005b30| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00005b40| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 0d 0a 74 69 |--------|----..ti|
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|00005d90| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
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|00005e30| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 3b 42 | | ;B|
|00005e40| 49 4f 53 20 64 69 73 6b | 20 73 65 72 76 69 63 65 |IOS disk| service|
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|00005e60| 20 20 20 20 20 20 20 20 | 6a 6e 65 20 74 69 6d 65 | |jne time|
|00005e70| 72 31 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |r1 | |
|00005e80| 20 20 20 20 20 20 3b 79 | 65 73 2c 20 74 68 65 6e | ;y|es, then|
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|00005ed0| 58 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |X | |
|00005ee0| 20 20 20 3b 53 61 76 65 | 20 61 6c 74 65 72 65 64 | ;Save| altered|
|00005ef0| 20 72 65 67 69 73 74 65 | 72 73 0d 0a 20 20 20 20 | registe|rs.. |
|00005f00| 20 20 20 20 20 20 20 20 | 20 20 70 75 73 68 20 20 | | push |
|00005f10| 20 44 58 0d 0a 20 20 20 | 20 20 20 20 20 20 20 20 | DX.. | |
|00005f20| 20 20 20 6d 6f 76 20 20 | 20 20 44 58 2c 32 30 68 | mov | DX,20h|
|00005f30| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 3b 50 | | ;P|
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|00005f50| 32 35 39 20 4f 43 57 33 | 0d 0a 20 20 20 20 20 20 |259 OCW3|.. |
|00005f60| 20 20 20 20 20 20 20 20 | 6d 6f 76 20 20 20 20 41 | |mov A|
|00005f70| 4c 2c 30 33 20 20 20 20 | 20 20 20 20 20 20 20 20 |L,03 | |
|00005f80| 20 20 20 3b 53 65 74 20 | 74 68 65 20 49 6e 2d 53 | ;Set |the In-S|
|00005f90| 65 72 76 69 63 65 20 52 | 65 67 2e 20 72 65 61 64 |ervice R|eg. read|
|00005fa0| 0d 0a 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |.. | |
|00005fb0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00005fc0| 20 20 20 20 20 20 20 20 | 20 20 20 3b 62 69 74 73 | | ;bits|
|00005fd0| 20 52 52 3d 31 20 61 6e | 64 20 52 49 53 3d 31 0d | RR=1 an|d RIS=1.|
|00005fe0| 0a 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 6f |. | o|
|00005ff0| 75 74 20 20 20 20 44 58 | 2c 41 4c 20 20 20 20 20 |ut DX|,AL |
|00006000| 20 20 20 20 20 20 20 20 | 20 20 3b 54 65 6c 6c 20 | | ;Tell |
|00006010| 38 32 35 39 20 74 6f 20 | 73 65 6e 64 20 49 53 52 |8259 to |send ISR|
|00006020| 20 6f 6e 20 6e 65 78 74 | 20 72 65 61 64 0d 0a 20 | on next| read.. |
|00006030| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 6a 6d 70 | | jmp|
|00006040| 20 20 20 20 73 68 6f 72 | 74 20 67 65 74 5f 6d 61 | shor|t get_ma|
|00006050| 73 6b 20 20 20 20 20 20 | 3b 54 68 69 73 20 63 61 |sk |;This ca|
|00006060| 75 73 65 73 20 61 20 37 | 20 63 6c 6f 63 6b 20 64 |uses a 7| clock d|
|00006070| 65 6c 61 79 20 70 65 72 | 69 6f 64 0d 0a 20 20 20 |elay per|iod.. |
|00006080| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00006090| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000060a0| 20 20 20 20 20 20 3b 6f | 6e 20 74 68 65 20 41 54 | ;o|n the AT|
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|000060d0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000060e0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000060f0| 20 20 20 20 20 20 3b 74 | 6f 20 73 65 74 75 70 20 | ;t|o setup |
|00006100| 74 68 65 20 49 53 52 20 | 73 74 61 74 75 73 20 66 |the ISR |status f|
|00006110| 6f 72 20 75 73 20 20 20 | 20 20 0d 0a 67 65 74 5f |or us | ..get_|
|00006120| 6d 61 73 6b 3a 0d 0a 20 | 20 20 20 20 20 20 20 20 |mask:.. | |
|00006130| 20 20 20 20 20 69 6e 20 | 20 20 20 20 41 4c 2c 44 | in | AL,D|
|00006140| 58 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |X | |
|00006150| 3b 47 65 74 20 74 68 65 | 20 49 53 52 0d 0a 20 20 |;Get the| ISR.. |
|00006160| 20 20 20 20 20 20 20 20 | 20 20 20 20 6f 72 20 20 | | or |
|00006170| 20 20 20 41 4c 2c 41 4c | 20 20 20 20 20 20 20 20 | AL,AL| |
|00006180| 20 20 20 20 20 20 20 3b | 53 65 74 20 7a 65 72 6f | ;|Set zero|
|00006190| 20 66 6c 61 67 20 69 66 | 20 6e 6f 20 69 6e 74 65 | flag if| no inte|
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|000061b0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000061c0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|000061d0| 20 20 20 20 20 3b 62 65 | 69 6e 67 20 73 65 72 76 | ;be|ing serv|
|000061e0| 69 63 65 64 0d 0a 20 20 | 20 20 20 20 20 20 20 20 |iced.. | |
|000061f0| 20 20 20 20 70 6f 70 20 | 20 20 20 44 58 20 20 20 | pop | DX |
|00006200| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 3b | | ;|
|00006210| 52 65 73 74 6f 72 65 20 | 74 68 65 20 61 6c 74 65 |Restore |the alte|
|00006220| 72 65 64 20 72 65 67 69 | 73 74 65 72 73 0d 0a 20 |red regi|sters.. |
|00006230| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 70 6f 70 | | pop|
|00006240| 20 20 20 20 41 58 0d 0a | 0d 0a 20 20 20 20 20 20 | AX..|.. |
|00006250| 20 20 20 20 20 20 20 20 | 6a 6e 7a 20 20 74 69 6d | |jnz tim|
|00006260| 65 72 31 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |er1 | |
|00006270| 20 20 20 3b 41 20 68 61 | 72 64 20 69 6e 74 65 72 | ;A ha|rd inter|
|00006280| 72 75 70 74 20 69 73 20 | 69 6e 20 70 72 6f 67 72 |rupt is |in progr|
|00006290| 65 73 73 0d 0a 20 20 20 | 20 20 20 20 20 20 20 20 |ess.. | |
|000062a0| 20 20 20 6d 6f 76 20 72 | 65 71 75 65 73 74 5f 66 | mov r|equest_f|
|000062b0| 6c 61 67 2c 30 20 20 20 | 20 20 20 20 20 20 20 20 |lag,0 | |
|000062c0| 20 3b 72 65 73 65 74 20 | 72 65 71 75 65 73 74 20 | ;reset |request |
|000062d0| 66 6c 61 67 0d 0a 20 20 | 20 20 20 20 20 20 20 20 |flag.. | |
|000062e0| 20 20 20 20 63 61 6c 6c | 20 64 69 72 65 63 74 6f | call| directo|
|000062f0| 72 79 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |ry | |
|00006300| 20 20 3b 69 6e 76 6f 6b | 65 20 64 69 72 65 63 74 | ;invok|e direct|
|00006310| 6f 72 79 20 72 6f 75 74 | 69 6e 65 0d 0a 74 69 6d |ory rout|ine..tim|
|00006320| 65 72 31 3a 20 20 20 20 | 20 20 20 69 72 65 74 20 |er1: | iret |
|00006330| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 | | |
|00006340| 20 20 20 20 20 20 20 20 | 20 3b 64 6f 6e 65 20 2d | | ;done -|
|00006350| 20 65 78 69 74 0d 0a 74 | 69 6d 65 72 20 20 20 20 | exit..t|imer |
|00006360| 20 20 20 20 20 65 6e 64 | 70 0d 0a 3b 2d 2d 2d 2d | end|p..;----|
|00006370| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00006380| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00006390| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000063a0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000063b0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 0d 0a 3b 2d 2d 2d |--------|--..;---|
|000063c0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000063d0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000063e0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|000063f0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
+--------+-------------------------+-------------------------+--------+--------+
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