I reverse-engineered some I/O addresses from the ROM (specifically the CRT Controller and the timer, but then I found that MAME emulates the JB-3000 and that all the I/O addresses and more are documented there.
/* Main Unit 0-0x7ff */
// 0-3 8255A PPI parallel port
map(0x00, 0x03).rw(m_ppi8255, FUNC(i8255_device::read), FUNC(i8255_device::write));
// Discrete latches
map(0x04, 0x04).r(FUNC(myb3k_state::myb3k_kbd_r));
map(0x04, 0x04).w(FUNC(myb3k_state::myb3k_video_mode_w)); // b0=40CH, b1=80CH, b2=16 raster
map(0x05, 0x05).r(FUNC(myb3k_state::myb3k_io_status_r)); // printer connector bits: b3=fault b2=paper out b1 or b0=busy
map(0x05, 0x05).w(FUNC(myb3k_state::dma_segment_w)); // b0-b3=addr, b6=A b7=B
map(0x06, 0x06).portr("DSW2");
// 8-9 8259A interrupt controller
map(0x08, 0x09).rw(m_pic8259, FUNC(pic8259_device::read), FUNC(pic8259_device::write));
// c-f 8253 PIT timer
map(0x0c, 0x0f).rw(m_pit8253, FUNC(pit8253_device::read), FUNC(pit8253_device::write));
// 10-18 8257 DMA
map(0x10, 0x18).rw(m_dma8257, FUNC(i8257_device::read), FUNC(i8257_device::write));
// 1c-1d HD46505S CRTC
map(0x1c, 0x1c).rw(m_crtc, FUNC(hd6845s_device::status_r), FUNC(hd6845s_device::address_w));
map(0x1d, 0x1d).rw(m_crtc, FUNC(hd6845s_device::register_r), FUNC(hd6845s_device::register_w));
/* Expansion Unit 0x800 - 0xfff */
F000:E000 EA4BE000F0 JMP F000:E04B
F000:E005 52 4F 4D-20 42 49 4F 53 20 76 65 ROM BIOS ve
F000:E010 72 73 69 6F 6E 20 32 2E-30 37 20 20 39 2D 31 31 rsion 2.07 9-11
F000:E020 2D 31 39 38 32 0D 0A 24 -1982..$
; From reset code at 0xFFFF0, DS = E000, SI = 0005
; Check for some kind of an option ROM at E000:0000
F000:E028 8CC8 MOV AX,CS
F000:E02A 8EC0 MOV ES,AX ; ES = CS
F000:E02C BF40E0 MOV DI,E040 ; Pointer to text "JB3000"
F000:E02F 90 NOP
F000:E030 B90600 MOV CX,0006
F000:E033 F3A6 REPE CMPSB ; Compare DS:SI++ to ES:DI++
F000:E035 750F JNZ E046
F000:E037 2EFF2E3CE0 JMP FAR CS:[E03C] ; and jump to E000:0000 if the string matches
F000:E03C 00 00 00 E0 ....
F000:E040 4A 42 33 30 30 30 JB3000
; Otherwise no code at E000:0000, so here we are.
F000:E046 32FF XOR BH,BH ; From reset, BH = 0
F000:E048 EB05 JMP E04F
F000:E04A 90 NOP
F000:E04B FA CLI ; From 0xFE000
F000:E04C FC CLD
F000:E04D B701 MOV BH,01
F000:E04F 8CC8 MOV AX,CS ; BH = 0, here after reset. BH = 1, here from F000:E000
F000:E051 8ED8 MOV DS,AX
F000:E053 B082 MOV AL,82
F000:E055 BA0300 MOV DX,0003
F000:E058 EE OUT DX,AL ; 0x0003 = 0x82
F000:E059 B018 MOV AL,18
F000:E05B B200 MOV DL,00
F000:E05D EE OUT DX,AL ; 0x0000 = 0x18
F000:E05E B0AB MOV AL,AB
F000:E060 B202 MOV DL,02
F000:E062 EE OUT DX,AL ; 0x0002 = 0xAB
F000:E063 B018 MOV AL,18
F000:E065 B200 MOV DL,00
F000:E067 EE OUT DX,AL ; 0x0000 = 0x18
F000:E068 32C0 XOR AL,AL
F000:E06A B203 MOV DL,03
F000:E06C EE OUT DX,AL ; 0x0003 = 0x00
F000:E06D D40A AAM 0A ; https://www.pcjs.org/documents/manuals/intel/8086/ops/AAM/
; This makes no sense because result (of 0 adjusted, still 0) gets discarded
F000:E06F B001 MOV AL,01
F000:E071 EE OUT DX,AL ; 0x0003 = 0x01
F000:E072 B076 MOV AL,76
F000:E074 BA0F00 MOV DX,000F ; you've been changing DL all along, DH is still zero... why?
F000:E077 EE OUT DX,AL ; 0x000F = 0x76
F000:E078 B87404 MOV AX,0474
F000:E07B B20D MOV DL,0D
F000:E07D EE OUT DX,AL ; 0x000D = 0x74
F000:E07E 8AC4 MOV AL,AH
F000:E080 EE OUT DX,AL ; 0x000D = 0x04
F000:E081 B034 MOV AL,34
F000:E083 B20F MOV DL,0F
F000:E085 EE OUT DX,AL 0x000F = 0x34
F000:E086 B811E9 MOV AX,E911
F000:E089 B20C MOV DL,0C
F000:E08B EE OUT DX,AL 0x000C = 0x11
F000:E08C 8AC4 MOV AL,AH
F000:E08E EE OUT DX,AL 0x000C = 0xE9
F000:E08F B002 MOV AL,02
F000:E091 B204 MOV DL,04
F000:E093 EE OUT DX,AL 0x0004 = 0x02
; get 16 bytes from E953 and write it to I/O. This is obviously the 6845
F000:E094 B91000 MOV CX,0010
F000:E097 33F6 XOR SI,SI
F000:E099 32DB XOR BL,BL
F000:E09B B21C MOV DL,1C
F000:E09D 8AC3 MOV AL,BL
F000:E09F EE OUT DX,AL ; 0x001C = 0,1,...,0xF
F000:E0A0 8A8453E9 MOV AL,[SI+E953]
F000:E0A4 B21D MOV DL,1D
F000:E0A6 EE OUT DX,AL ; 0x001D = 37 28 2C 84 1F 00 19 1B 00 07 60 07 00 00 00 00
F000:E0A7 46 INC SI
F000:E0A8 FEC3 INC BL
F000:E0AA E2EF LOOP E09B
;
; Horizontal total 0x37 55
; Horizontal displayed 0x28 40
; H Sync 0x2C 44
; Sync Width 0x84 ? Only four LSB important
; Vertical Total 0x1F 31
; V total adjust 0x00
; Vertical displayed 0x19 25
; V sync position 0x1B
; Interlace mode 0x00
; Max Scan Line 0x07
; Cursor Start 0x60
; Cursor End 0x07
; Start Address 0x0000
; Cursor 0x0000
; This looks like the timer
F000:E0AC B013 MOV AL,13 ;ICW1 - EDGE, SNGL, ICW4
F000:E0AE B208 MOV DL,08
F000:E0B0 EE OUT DX,AL ; 0x0008 = 0x13
F000:E0B1 B040 MOV AL,40
F000:E0B3 B209 MOV DL,09
F000:E0B5 EE OUT DX,AL ; 0x0009 = 0x40 ;SETUP ICW2
F000:E0B6 B003 MOV AL,03
F000:E0B8 EE OUT DX,AL ; 0x0009 = 0x03 ;SETUP ICW4
F000:E0B9 33C0 XOR AX,AX
F000:E0BB 8ED0 MOV SS,AX
F000:E0BD BCFFFF MOV SP,FFFF ; 0000:FFFF
F000:E0C0 22FF AND BH,BH
F000:E0C2 7413 JZ E0D7 ; ? warm or coldstart... remember BH from E04D ?
; Warm, so interrupt vectors are in place and we can INT, except E1AA then sets up the vectors again
; as if they are not in place.
F000:E0C4 B401 MOV AH,01
F000:E0C6 CD6E INT 6E ; E599, AH=1, AL=0 ; point ES:BX at 0x08004 (AH = 1) or 0x08008 (AH = 2)
F000:E0C8 268B2F MOV BP,ES:[BX]
F000:E0CB F7C5FF07 TEST BP,07FF ; check for cookie of some type
F000:E0CF 7506 JNZ E0D7 ; otherwise cold
F000:E0D1 BD0100 MOV BP,0001
F000:E0D4 E9D300 JMP E1AA ; warm
; Cold, so test memory
F000:E0D7 B8AAAA MOV AX,AAAA
F000:E0DA 33FF XOR DI,DI
F000:E0DC 8EC7 MOV ES,DI
F000:E0DE B90080 MOV CX,8000
F000:E0E1 FC CLD
F000:E0E2 F3AB REP STOSW
F000:E0E4 B90080 MOV CX,8000
F000:E0E7 F3AF REPE SCASW
F000:E0E9 750A JNZ E0F5
F000:E0EB 8CC3 MOV BX,ES
F000:E0ED 81C30010 ADD BX,1000
F000:E0F1 8EC3 MOV ES,BX
F000:E0F3 EBE9 JMP E0DE
F000:E0F5 83FF02 CMP DI,+02
F000:E0F8 7506 JNZ E100
F000:E0FA 8CC3 MOV BX,ES
F000:E0FC 23DB AND BX,BX
F000:E0FE 7503 JNZ E103
F000:E100 EB25 JMP E127
F000:E102 90 NOP
F000:E103 3DAAAA CMP AX,AAAA
F000:E106 7505 JNZ E10D
F000:E108 B85555 MOV AX,5555
F000:E10B EBCD JMP E0DA
F000:E10D 8CC5 MOV BP,ES
F000:E10F B8AAAA MOV AX,AAAA
F000:E112 33FF XOR DI,DI
F000:E114 BA00D0 MOV DX,D000
F000:E117 8EC2 MOV ES,DX
F000:E119 B90080 MOV CX,8000
F000:E11C F3AB REP STOSW
F000:E11E B90080 MOV CX,8000
F000:E121 F3AF REPE SCASW
F000:E123 7410 JZ E135
F000:E125 B009 MOV AL,09
F000:E127 B00A MOV AL,0A
F000:E129 BA0300 MOV DX,0003
F000:E12C EE OUT DX,AL
F000:E12D 83EF02 SUB DI,+02
F000:E130 268B05 MOV AX,ES:[DI]
F000:E133 EBFB JMP E130 ; I'm guessing this is where we end if mem test fails?
F000:E135 3DAAAA CMP AX,AAAA
F000:E138 7505 JNZ E13F
F000:E13A B85555 MOV AX,5555
F000:E13D EBD3 JMP E112 ; repeat with 0x5555
F000:E13F B700 MOV BH,00
F000:E141 B800FC MOV AX,FC00
F000:E144 E82800 CALL E16F
F000:E147 740D JZ E156
F000:E149 B80608 MOV AX,0806
F000:E14C E8A703 CALL E4F6
F000:E14F 8AC3 MOV AL,BL
F000:E151 B420 MOV AH,20
F000:E153 E8A003 CALL E4F6
F000:E156 B800FE MOV AX,FE00
F000:E159 E81300 CALL E16F ; Checksum ROM?
F000:E15C 744C JZ E1AA
F000:E15E B80708 MOV AX,0807
F000:E161 E89203 CALL E4F6
F000:E164 8AC3 MOV AL,BL
F000:E166 B420 MOV AH,20
F000:E168 E88B03 CALL E4F6
F000:E16B EB3D JMP E1AA
F000:E16D 90 NOP
F000:E16E F4 HLT
; Checksum FE000 - FFFFF
F000:E16F 8EC0 MOV ES,AX
F000:E171 33F6 XOR SI,SI
F000:E173 33C0 XOR AX,AX
F000:E175 B90020 MOV CX,2000
F000:E178 260204 ADD AL,ES:[SI]
F000:E17B 46 INC SI
F000:E17C E2FA LOOP E178
F000:E17E F6D0 NOT AL
F000:E180 FEC0 INC AL
F000:E182 8AD8 MOV BL,AL
F000:E184 22C0 AND AL,AL
F000:E186 741F JZ E1A7
F000:E188 22FF AND BH,BH
F000:E18A 751B JNZ E1A7
F000:E18C B7FF MOV BH,FF
F000:E18E 53 PUSH BX
F000:E18F E86F04 CALL E601
F000:E192 E88E01 CALL E323
F000:E195 FA CLI
F000:E196 BA0900 MOV DX,0009
F000:E199 B0FF MOV AL,FF
F000:E19B EE OUT DX,AL
F000:E19C B00C MOV AL,0C
F000:E19E B40A MOV AH,0A
F000:E1A0 50 PUSH AX ; Fake INT 60
F000:E1A1 2EFF1EF0E3 CALL FAR CS:[E3F0] ; Function 0A print char in AL
F000:E1A6 5B POP BX
F000:E1A7 22DB AND BL,BL
F000:E1A9 C3 RET
;F000:E460 -00 00 86 00 00 00 81 00 ........
;F000:E470 C0 03 40 00 40 42 10 01
; move 12 bytes from E468 to 0080:0000 (0x08000)
F000:E1AA BE68E4 MOV SI,E468
F000:E1AD 90 NOP
F000:E1AE BF8000 MOV DI,0080
F000:E1B1 8EC7 MOV ES,DI
F000:E1B3 BF0000 MOV DI,0000
F000:E1B6 B90C00 MOV CX,000C
F000:E1B9 F3A4 REP MOVSB ; ES:DI++ = DS:SI++
F000:E1BB E84304 CALL E601 ; copy E614-E754 to 0x08600
F000:E1BE E86201 CALL E323 ; Copy E3BE-E3ED to 0x08300
; Store F000:E478 from 0x00000 to 0x003FF (all vectors)
F000:E1C1 BB78E4 MOV BX,E478
F000:E1C4 90 NOP
F000:E1C5 8CCA MOV DX,CS
F000:E1C7 33FF XOR DI,DI
F000:E1C9 8EC7 MOV ES,DI ; ES = 0
F000:E1CB B90001 MOV CX,0100
F000:E1CE 8BC3 MOV AX,BX
F000:E1D0 AB STOSW ; AX -> ES:DI++
F000:E1D1 8BC2 MOV AX,DX ; CS
F000:E1D3 AB STOSW ; AX -> ES:DI++
F000:E1D4 E2F8 LOOP E1CE
; Move vector table at F000:E3F0 to 0000:0180 to 0000:01CF (IBM "reserved for user programs")
F000:E1D6 BEF0E3 MOV SI,E3F0
F000:E1D9 90 NOP
F000:E1DA BF8001 MOV DI,0180
F000:E1DD B95000 MOV CX,0050 ; 80 bytes, 20 vectors
F000:E1E0 F3A4 REP MOVSB ; ES:DI++ = DS:SI++
; move 32 bytes from table at F000:E440 to 0x00100-0x0011F
F000:E1E2 B81000 MOV AX,0010
F000:E1E5 8EC0 MOV ES,AX
F000:E1E7 B92000 MOV CX,0020 ; 32 bytes
F000:E1EA BE40E4 MOV SI,E440
F000:E1ED 90 NOP
F000:E1EE 33FF XOR DI,DI
F000:E1F0 F3A4 REP MOVSB ; ES:DI++ = DS:SI++
; move 8 bytes from F000:E460 to 0x00140-0x00147
F000:E1F2 83C720 ADD DI,+20
F000:E1F5 B90800 MOV CX,0008 ; 8 bytes
F000:E1F8 F3A4 REP MOVSB ; ES:DI++ = DS:SI++
/*
; Now our vector table should look like
INT ADDR Vector
000 0000 78 E4 00 F0 "Illegal Interrupt"
...
03F 00FC 78 E4 00 F0 "Illegal Interrupt"
040 0100 2D FD 00 F0
041 0104 98 E4 00 F0
042 0108 78 E4 00 F0 "Illegal Interrupt"
043 010C 78 E4 00 F0 "Illegal Interrupt"
044 0110 78 E4 00 F0 "Illegal Interrupt"
045 0114 76 EA 00 F0
046 0118 37 F9 00 F0
047 011C 78 E4 00 F0 "Illegal Interrupt"
050 0140 54 F9 00 F0
051 0144 3D F9 00 F0
060 0180 57 E7 00 F0
061 0184 B6 F2 00 F0
062 0188 78 E4 00 F0 "Illegal Interrupt"
063 018C D2 F3 00 F0 Disk I/O
064 0190 78 E4 00 F0 "Illegal Interrupt"
065 0194 00 A0 00 F0
066 0198 B6 FC 00 F0
067 019C 78 E4 00 F0 "Illegal Interrupt"
068 01A0 FC FE 00 F0
069 01A4 00 A8 00 F0
06A 01A8 86 FE 00 F0
06B 01AC 78 E4 00 F0 "Illegal Interrupt"
06C 01B0 78 E4 00 F0 "Illegal Interrupt"
06D 01B4 E1 E4 00 F0
06E 01B8 99 E5 00 F0
06F 01BC 00 00 80 00
070 01C0 97 E4 00 F0
071 01C4 97 E4 00 F0
072 01C8 97 E4 00 F0
073 01CC 97 E4 00 F0
*/
F000:E1FA FB STI
F000:E1FB BA0900 MOV DX,0009
F000:E1FE B000 MOV AL,00
F000:E200 EE OUT DX,AL ; 0x0009 = 0x00
F000:E201 BA0600 MOV DX,0006
F000:E204 E82F01 CALL E336 ; IN AL,0006, invert all bits, swap bits LSB..MSB
F000:E207 B401 MOV AH,01
F000:E209 CD6E INT 6E
F000:E20B 26884704 MOV ES:[BX+04],AL
F000:E20F F7C50100 TEST BP,0001
F000:E213 750E JNZ E223
F000:E215 A808 TEST AL,08
F000:E217 B90008 MOV CX,0800
F000:E21A 7402 JZ E21E
F000:E21C D1E1 SHL CX,1
F000:E21E 2BE9 SUB BP,CX
F000:E220 26892F MOV ES:[BX],BP
F000:E223 B201 MOV DL,01
F000:E225 E80E01 CALL E336 ; IN AL, 0001, invert all bits, swap bits LSB..MSB
F000:E228 26884703 MOV ES:[BX+03],AL
F000:E22C B104 MOV CL,04
F000:E22E D2E8 SHR AL,CL
F000:E230 2403 AND AL,03
F000:E232 BE74E4 MOV SI,E474
F000:E235 90 NOP
F000:E236 98 CBW
F000:E237 03F0 ADD SI,AX
F000:E239 8A04 MOV AL,[SI]
F000:E23B B400 MOV AH,00
F000:E23D CD60 INT 60
F000:E23F B81001 MOV AX,0110
F000:E242 CD68 INT 68
F000:E244 BEC0DF MOV SI,DFC0
F000:E247 E80603 CALL E550
F000:E24A B401 MOV AH,01
F000:E24C CD6E INT 6E
F000:E24E 26F6470480 TEST BYTE PTR ES:[BX+04],80
F000:E253 7406 JZ E25B
F000:E255 BE05E0 MOV SI,E005
F000:E258 E8F502 CALL E550
F000:E25B 33ED XOR BP,BP
F000:E25D B401 MOV AH,01
F000:E25F CD6E INT 6E
F000:E261 268A4703 MOV AL,ES:[BX+03]
F000:E265 8AF0 MOV DH,AL
F000:E267 D0E8 SHR AL,1
F000:E269 2403 AND AL,03
F000:E26B 26884707 MOV ES:[BX+07],AL
F000:E26F D0EE SHR DH,1
F000:E271 7312 JAE E285
F000:E273 50 PUSH AX
F000:E274 B81800 MOV AX,0018
F000:E277 CD6E INT 6E
F000:E279 26C747032005 MOV WORD PTR ES:[BX+03],0520
F000:E27F 26C6470701 MOV BYTE PTR ES:[BX+07],01
F000:E284 58 POP AX
F000:E285 B400 MOV AH,00
F000:E287 CD63 INT 63
F000:E289 7259 JB E2E4 ; "Drive not ready"
F000:E28B BB0010 MOV BX,1000
F000:E28E 8EDB MOV DS,BX
F000:E290 33DB XOR BX,BX
F000:E292 B406 MOV AH,06
F000:E294 B90540 MOV CX,4005
F000:E297 B2C4 MOV DL,C4
F000:E299 50 PUSH AX
F000:E29A CD63 INT 63
F000:E29C 249F AND AL,9F
F000:E29E 58 POP AX
F000:E29F 7411 JZ E2B2
F000:E2A1 23ED AND BP,BP
F000:E2A3 7546 JNZ E2EB ; "Bad disk unusable"
F000:E2A5 B408 MOV AH,08
F000:E2A7 CD63 INT 63
F000:E2A9 26C60700 MOV BYTE PTR ES:[BX],00
F000:E2AD BD0100 MOV BP,0001
F000:E2B0 EBAB JMP E25D
F000:E2B2 8A4F03 MOV CL,[BX+03]
F000:E2B5 FEC1 INC CL
F000:E2B7 50 PUSH AX
F000:E2B8 B84000 MOV AX,0040
F000:E2BB D3E0 SHL AX,CL
F000:E2BD 8BC8 MOV CX,AX
F000:E2BF 58 POP AX
F000:E2C0 50 PUSH AX
F000:E2C1 B408 MOV AH,08
F000:E2C3 CD63 INT 63
F000:E2C5 26894F04 MOV ES:[BX+04],CX
F000:E2C9 33D2 XOR DX,DX
F000:E2CB B80004 MOV AX,0400
F000:E2CE F7F1 DIV CX
F000:E2D0 8BC8 MOV CX,AX
F000:E2D2 58 POP AX
F000:E2D3 33DB XOR BX,BX
F000:E2D5 BA0001 MOV DX,0100
F000:E2D8 B402 MOV AH,02
F000:E2DA 8BE8 MOV BP,AX
F000:E2DC CD63 INT 63
F000:E2DE 7312 JAE E2F2
F000:E2E0 3C02 CMP AL,02
F000:E2E2 7507 JNZ E2EB
F000:E2E4 BEA7E3 MOV SI,E3A7 "Drive not ready, set$"
F000:E2E7 90 NOP
F000:E2E8 EB25 JMP E30F
F000:E2EA 90 NOP
F000:E2EB BE8BE3 MOV SI,E38B "Bad disk unusable, change$"
F000:E2EE 90 NOP
F000:E2EF EB1E JMP E30F
F000:E2F1 90 NOP
F000:E2F2 BE0300 MOV SI,0003
F000:E2F5 BF4BE3 MOV DI,E34B "IPL"
F000:E2F8 90 NOP
F000:E2F9 8CC8 MOV AX,CS
F000:E2FB 8EC0 MOV ES,AX
F000:E2FD B90300 MOV CX,0003
F000:E300 F3A6 REPE CMPSB ; Compare DS:SI++ to ES:DI++
F000:E302 7507 JNZ E30B
F000:E304 8BC5 MOV AX,BP
F000:E306 2EFF2E47E3 JMP FAR CS:[E347] ; jump to boot loader at 1000:0000 0x10000
F000:E30B BE4EE3 MOV SI,E34E "Not JB-3000 disk, change$"
F000:E30E 90 NOP
F000:E30F 8CC8 MOV AX,CS
F000:E311 8ED8 MOV DS,AX
F000:E313 E83A02 CALL E550
F000:E316 BE69E3 MOV SI,E369 " disk & strike any key when ready$"
F000:E319 90 NOP
F000:E31A E83302 CALL E550
F000:E31D E85802 CALL E578
F000:E320 E9DDFC JMP E000 ; Warmstart
; Copy E3BE-E3ED to 0x08300
F000:E323 B88300 MOV AX,0083
F000:E326 8EC0 MOV ES,AX
F000:E328 BEBEE3 MOV SI,E3BE
F000:E32B 90 NOP
F000:E32C BF0000 MOV DI,0000
F000:E32F 8B0EEEE3 MOV CX,[E3EE]
F000:E333 F3A4 REP MOVSB ; ES:DI++ = DS:SI++
F000:E335 C3 RET
; Read AL from DX, invert all bits, change bit order LSB..MSB
F000:E336 EC IN AL,DX
F000:E337 F6D0 NOT AL
F000:E339 32E4 XOR AH,AH
F000:E33B B90800 MOV CX,0008
F000:E33E D0E8 SHR AL,1
F000:E340 D0D4 RCL AH,1
F000:E342 E2FA LOOP E33E
F000:E344 8AC4 MOV AL,AH
F000:E346 C3 RET
F000:E340 00-00 00 10 49 50 4C 0D 0A ....IPL..
F000:E350 4E 6F 74 20 4A 42 2D 33-30 30 30 20 64 69 73 6B Not JB-3000 disk
F000:E360 2C 20 63 68 61 6E 67 65-24 20 64 69 73 6B 20 26 , change$ disk &
F000:E370 20 73 74 72 69 6B 65 20-61 6E 79 20 6B 65 79 20 strike any key
F000:E380 77 68 65 6E 20 72 65 61-64 79 24 0D 0A 42 61 64 when ready$..Bad
F000:E390 20 64 69 73 6B 20 75 6E-75 73 61 62 6C 65 2C 20 disk unusable,
F000:E3A0 63 68 61 6E 67 65 24 0D-0A 44 72 69 76 65 20 6E change$..Drive n
F000:E3B0 6F 74 20 72 65 61 64 79-2C 20 73 65 74 24 ot ready, set$
F000:E3B0 00 00 ..
F000:E3C0 00 FC 00 00 84 00 00 00-00 00 00 00 00 00 00 00 ................
F000:E3D0 00 01 00 02 00 03 00 04-00 05 00 06 00 07 00 88 ................
F000:E3E0 00 8A 00 8C 00 8E 00 90-00 92 00 94 00 96 30 00 ..............0.
F000:E3F0 57 E7 00 F0 B6 F2 00 F0-78 E4 00 F0 D2 F3 00 F0 W.......x.......
F000:E400 78 E4 00 F0 00 A0 00 F0-B6 FC 00 F0 78 E4 00 F0 x...........x...
F000:E410 FC FE 00 F0 00 A8 00 F0-86 FE 00 F0 78 E4 00 F0 ............x...
F000:E420 78 E4 00 F0 E1 E4 00 F0-99 E5 00 F0 00 00 80 00 x...............
F000:E430 97 E4 00 F0 97 E4 00 F0-97 E4 00 F0 97 E4 00 F0 ................
; This goes to 0x100
F000:E440 2D FD 00 F0 98 E4 00 F0-78 E4 00 F0 78 E4 00 F0 -.......x...x...
F000:E450 78 E4 00 F0 76 EA 00 F0-37 F9 00 F0 78 E4 00 F0 x...v...7...x...
; This goes to 0x140
F000:E460 54 F9 00 F0 3D F9 00 F0
F000:E460 -00 00 86 00 00 00 81 00 ........
F000:E470 C0 03 40 00 40 42 10 01
; Default INTs point here (see F000:E1C1)
F000:E478 50 PUSH AX
F000:E479 56 PUSH SI
F000:E47A 55 PUSH BP
F000:E47B 1E PUSH DS
F000:E47C 8BEC MOV BP,SP
F000:E47E 8B7608 MOV SI,[BP+08]
F000:E481 8E5E0A MOV DS,WORD PTR [BP+0A]
F000:E484 4E DEC SI
F000:E485 8A04 MOV AL,[SI]
F000:E487 8CCE MOV SI,CS
F000:E489 8EDE MOV DS,SI
F000:E48B BECCE4 MOV SI,E4CC ; "\r\nIllegal Interrupt $"
F000:E48E 90 NOP
F000:E48F B430 MOV AH,30
F000:E491 CD6D INT 6D
F000:E493 1F POP DS
F000:E494 5D POP BP
F000:E495 5E POP SI
F000:E496 58 POP AX
; INT 70 71 72 73 vector here (null)
F000:E497 CF IRET
; INT 41
F000:E498 50 PUSH AX
F000:E499 53 PUSH BX
F000:E49A 52 PUSH DX
F000:E49B 06 PUSH ES
F000:E49C B408 MOV AH,08
F000:E49E E83001 CALL E5D1
F000:E4A1 BA0400 MOV DX,0004
F000:E4A4 EC IN AL,DX
F000:E4A5 8AE0 MOV AH,AL
F000:E4A7 D0D4 RCL AH,1
F000:E4A9 7207 JB E4B2
F000:E4AB 2688470B MOV ES:[BX+0B],AL
F000:E4AF EB16 JMP E4C7
F000:E4B1 90 NOP
F000:E4B2 2688470C MOV ES:[BX+0C],AL
F000:E4B6 268A670B MOV AH,ES:[BX+0B]
F000:E4BA D0DC RCR AH,1
F000:E4BC 7309 JAE E4C7
F000:E4BE B401 MOV AH,01
F000:E4C0 CD6E INT 6E
F000:E4C2 26C64702FF MOV BYTE PTR ES:[BX+02],FF
F000:E4C7 07 POP ES
F000:E4C8 5A POP DX
F000:E4C9 5B POP BX
F000:E4CA 58 POP AX
F000:E4CB CF IRET
F000:E4C0 - 0D 0A 49 6C ..Il
F000:E4D0 6C 65 67 61 6C 20 69 6E-74 65 72 72 75 70 74 20 legal interrupt
F000:E4E0 24 $
INT 6D AH 34 prints text at [DS?:SI] terminated $
; INT 6D
F000:E4E1 53 PUSH BX
F000:E4E2 06 PUSH ES
F000:E4E3 50 PUSH AX
F000:E4E4 B401 MOV AH,01
F000:E4E6 CD6E INT 6E
F000:E4E8 26F6470480 TEST BYTE PTR ES:[BX+04],80
F000:E4ED 58 POP AX
F000:E4EE 7403 JZ E4F3
F000:E4F0 E80300 CALL E4F6
F000:E4F3 07 POP ES
F000:E4F4 5B POP BX
F000:E4F5 CF IRET
F000:E4F6 50 PUSH AX
F000:E4F7 51 PUSH CX
F000:E4F8 52 PUSH DX
F000:E4F9 50 PUSH AX
F000:E4FA BA0300 MOV DX,0003
F000:E4FD B005 MOV AL,05
F000:E4FF EE OUT DX,AL
F000:E500 58 POP AX
F000:E501 F6C410 TEST AH,10
F000:E504 7403 JZ E509
F000:E506 E84700 CALL E550
F000:E509 F6C420 TEST AH,20
F000:E50C 7512 JNZ E520
F000:E50E F6C408 TEST AH,08
F000:E511 742B JZ E53E
F000:E513 BE00F0 MOV SI,F000
F000:E516 90 NOP
F000:E517 8EDE MOV DS,SI
F000:E519 BE90E5 MOV SI,E590 "Error$"
F000:E51C 90 NOP
F000:E51D E83000 CALL E550
F000:E520 50 PUSH AX
F000:E521 8AE8 MOV CH,AL
F000:E523 B104 MOV CL,04
F000:E525 D2E8 SHR AL,CL
F000:E527 240F AND AL,0F
F000:E529 E83B00 CALL E567
F000:E52C 8AC5 MOV AL,CH
F000:E52E 240F AND AL,0F
F000:E530 E83400 CALL E567
F000:E533 B020 MOV AL,20
F000:E535 B40A MOV AH,0A
F000:E537 50 PUSH AX
F000:E538 2EFF1EF0E3 CALL FAR CS:[E3F0] ; print char in AL
F000:E53D 58 POP AX
F000:E53E F6C404 TEST AH,04
F000:E541 7401 JZ E544
F000:E543 F4 HLT
F000:E544 F6C401 TEST AH,01
F000:E547 7403 JZ E54C
F000:E549 E82C00 CALL E578
F000:E54C 5A POP DX
F000:E54D 59 POP CX
F000:E54E 58 POP AX
F000:E54F C3 RET
; Load character from DS:SI and print if not $
F000:E550 50 PUSH AX
F000:E551 56 PUSH SI
F000:E552 1E PUSH DS
F000:E553 FC CLD
F000:E554 AC LODSB
F000:E555 3C24 CMP AL,24 '$'
F000:E557 740A JZ E563 ; done
F000:E559 B40A MOV AH,0A
F000:E55B 50 PUSH AX ; Fake for IRET at end of INT 60 servive routine
F000:E55C 2EFF1EF0E3 CALL FAR CS:[E3F0] ; address at [e3F0] is also int 60 address e757
F000:E561 EBF1 JMP E554
F000:E563 1F POP DS
F000:E564 5E POP SI
F000:E565 58 POP AX
F000:E566 C3 RET
F000:E567 3C0A CMP AL,0A
F000:E569 7202 JB E56D
F000:E56B 0407 ADD AL,07
F000:E56D 0430 ADD AL,30
F000:E56F B40A MOV AH,0A
F000:E571 50 PUSH AX
F000:E572 2EFF1EF0E3 CALL FAR CS:[E3F0]
F000:E577 C3 RET
F000:E578 50 PUSH AX
F000:E579 53 PUSH BX
F000:E57A 06 PUSH ES
F000:E57B B401 MOV AH,01
F000:E57D CD6E INT 6E
F000:E57F FB STI
F000:E580 26C6470200 MOV BYTE PTR ES:[BX+02],00
F000:E585 26F64702FF TEST BYTE PTR ES:[BX+02],FF
F000:E58A 74F9 JZ E585
F000:E58C 07 POP ES
F000:E58D 5B POP BX
F000:E58E 58 POP AX
F000:E58F C3 RET
F000:E590 0D 0A 45 72 72 6F 72 20-24 Error $
; INT 6E
F000:E599 50 PUSH AX
F000:E59A 22E4 AND AH,AH
F000:E59C 7508 JNZ E5A6
F000:E59E 8AE0 MOV AH,AL
F000:E5A0 E82E00 CALL E5D1
F000:E5A3 EB2A JMP E5CF ; pop AX and return
F000:E5A5 90 NOP
F000:E5A6 80FC03 CMP AH,03
F000:E5A9 7324 JAE E5CF ; pop AX and return
; So here AH is 1 or 2
F000:E5AB 8AC4 MOV AL,AH
F000:E5AD D0E0 SHL AL,1 ; 2 or 4
F000:E5AF D0E0 SHL AL,1 ; 4 or 8
F000:E5B1 98 CBW ; sets AH to 0 always?
F000:E5B2 56 PUSH SI
F000:E5B3 1E PUSH DS
F000:E5B4 33DB XOR BX,BX
F000:E5B6 8EC3 MOV ES,BX
F000:E5B8 BBBC01 MOV BX,01BC ; point ES:BX at 0000:01BC which is INT 6F and contains 00 00 80 00
F000:E5BB 268B7702 MOV SI,ES:[BX+02] ; SI = 0080
F000:E5BF 8EDE MOV DS,SI ; DS = 0080
F000:E5C1 268B37 MOV SI,ES:[BX] ; SI = 0000
F000:E5C4 03F0 ADD SI,AX ; SI = 0004 or 0008
F000:E5C6 8B5C02 MOV BX,[SI+02] ; get vector at 0x08004 or 0x08008 in ES:BX
F000:E5C9 8EC3 MOV ES,BX
F000:E5CB 8B1C MOV BX,[SI]
F000:E5CD 1F POP DS
F000:E5CE 5E POP SI
F000:E5CF 58 POP AX
F000:E5D0 CF IRET
; E5D1 Get pointer to workspace at ES:BX+3 based on AH
; Find AH in linked list starting at 0x08600 format is two bytes next offset, one byte index. Return ES:BX points at list
; Print "No DCB" if AX not found
; AH = 04 returns 0086:0000
; AH = 14 returns 0086:0068
; AH = 08 returns 0086:008A
; AH = 30 returns 0086:00BB
; AH = 18 returns 0086:00D9
; AH = 10 returns 0086:0112
; AH = 2C returns 0086:0121
F000:E5D1 50 PUSH AX
F000:E5D2 BB8600 MOV BX,0086
F000:E5D5 8EC3 MOV ES,BX
F000:E5D7 BB0000 MOV BX,0000
F000:E5DA 263A6702 CMP AH,ES:[BX+02]
F000:E5DE 7415 JZ E5F5 ; Return
F000:E5E0 268B1F MOV BX,ES:[BX]
F000:E5E3 23DB AND BX,BX
F000:E5E5 75F3 JNZ E5DA ; loop
F000:E5E7 8CCE MOV SI,CS
F000:E5E9 8EDE MOV DS,SI
F000:E5EB BEF7E5 MOV SI,E5F7 "No DCB"
F000:E5EE 90 NOP
F000:E5EF 8AC4 MOV AL,AH
F000:E5F1 B434 MOV AH,34
F000:E5F3 CD6D INT 6D
F000:E5F5 58 POP AX
F000:E5F6 C3 RET
F000:E5F7 0D 0A 4E 6F 20 44 43 42 20 24 No DCB$
; copy E614 to E754 to 0x08600
F000:E601 B88600 MOV AX,0086
F000:E604 8EC0 MOV ES,AX
F000:E606 BE14E6 MOV SI,E614
F000:E609 90 NOP
F000:E60A BF0000 MOV DI,0000
F000:E60D 8B0E55E7 MOV CX,[E755] ; 0x0141
F000:E611 F3A4 REP MOVSB ; ES:DI++ = DS:SI++
F000:E613 C3 RET
; This is the linked list traversed by routine at E5D1
F000:E610 68 00 04 10-00 00 00 D8 35 00 02 90 h.......5...
F000:E620 08 08 10 00 50 19 00 77-00 00 00 60 07 00 50 D0 ....P..w...`..P.
F000:E630 07 01 00 08 00 50 00 50-00 80 07 00 00 00 00 04 .....P.P........
F000:E640 04 00 00 00 00 00 00 00-00 00 60 56 00 00 00 00 ..........`V....
F000:E650 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
F000:E660 00 00 00 00 00 00 00 00-00 00 00 00 00 04 00 02 ................
F000:E670 00 08 00 0C 00 10 00 14-00 18 00 1C 8A 00 14 00 ................
F000:E680 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
F000:E690 00 00 00 00 00 00 00 00-00 00 00 00 00 00 BB 00 ................
F000:E6A0 08 01 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
F000:E6B0 00 00 B3 00 80 00 28 00-00 00 00 00 00 01 C0 00 ......(.........
F000:E6C0 00 01 01 01 00 01 00 00-00 00 00 00 00 00 00 D9 ................
F000:E6D0 00 30 30 05 00 00 00 00-00 00 00 00 00 BB 00 50 .00............P
F000:E6E0 00 00 00 00 00 00 00 00-00 00 00 00 00 12 01 18 ................
F000:E6F0 20 00 10 00 02 00 00 C0-00 00 00 00 00 00 00 FF ...............
F000:E700 00 00 08 01 28 08 00 02-03 FF 20 08 01 28 08 00 ....(..... ..(..
F000:E710 02 03 FF 21 08 01 28 08-00 02 03 FF 22 08 01 28 ...!..(....."..(
F000:E720 08 00 02 03 FF 23 21 01-10 00 00 00 00 00 00 B6 .....#!.........
F000:E730 00 50 00 00 00 3F 01 2C-00 00 00 00 00 00 00 00 .P...?.,........
F000:E740 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 ................
F000:E750 00 00 00 00 00
F000:E755 41 01
/*
0086:0000 68 00 04 10 00 00 00 D8 35 00 02 90 08 08 10 00
0086:0010 50 19 00 77 00 00 00 60 07 00 50 D0 07 01 00 08
0086:0020 00 50 00 50-00 80 07 00 00 00 00 04 04 00 00 00
0086:0030 00 00 00 00-00 00 60 56 00 00 00 00 00 00 00 00
0086:0040 00 00 00 00-00 00 00 00 00 00 00 00 00 00 00 00
0086:0050 00 00 00 00-00 00 00 00 00 04 00 02 00 08 00 0C
0086:0060 00 10 00 14 00 18 00 1C
0086:0068 8A 00 14 00 00 00 00 00
0086:0070 00 00 00 00-00 00 00 00 00 00 00 00 00 00 00 00
0086:0080 00 00 00 00-00 00 00 00 00 00
0086:008A BB 00 08 01 00 00
0086:0090 00 00 00 00-00 00 00 00 00 00 00 00 00 00 B3 00
0086:00A0 80 00 28 00-00 00 00 00 00 01 C0 00 00 01 01 01
0086:00B0 00 01 00 00-00 00 00 00 00 00 00
0086:00BB D9 00 30 30 05
0086:00C0 00 00 00 00-00 00 00 00 00 BB 00 50 00 00 00 00
0086:00D0 00 00 00 00 00 00 00 00 00
0086:00D9 12 01 18 20 00 10 00 02 00 00 C0 00 00 00 00 00
0086:00E9 00 00 FF 00 00
0086:00EE 08 01 28 08 00 02 03 FF 20 ; Floppy 0
0086:00F7 08 01 28 08 00 02 03 FF 21 ; Floppy 1
0086:0100 08 01 28 08 00 02 03 FF 22 ; Floppy 2
0086:0109 08 01 28 08 00 02 03 FF 23 ; Floppy 3
0086:0112 21 01 10 00 00 00 00 00 00 B6 00 50 00 00
0086:0120 00
0086:0121 3F 01 2C 00 00 00 00 00 00 00 00 00 00 00 00
0086:0130 00 00 00 00-00 00 00 00 00 00 00 00 00 00 00
0086:013F 00 00
*/
; INT 60 service routine
; Function number in AH
F000:E757 FB STI
F000:E758 FC CLD
F000:E759 57 PUSH DI
F000:E75A 50 PUSH AX
F000:E75B D0E4 SHL AH,1 ; number to word offset in table
F000:E75D 8AC4 MOV AL,AH
F000:E75F 32E4 XOR AH,AH ;
F000:E761 8BF8 MOV DI,AX
F000:E763 58 POP AX
F000:E764 2EFF956BE7 CALL WORD PTR CS:[DI+E76B]
F000:E769 5F POP DI
F000:E76A CF IRET
; Jump table, 19 addresses
F000:E760 - 91 E7 9C E9 EC .....
F000:E770 E9 BF E9 21 EA C3 EA 42-EB 06 E9 06 E9 06 E9 EC ...!...B........
F000:E780 EB DB F0 06 E9 06 E9 EC-EB 7B E9 D5 F0 15 F1 34 .........{.....4
F000:E790 F1
;00 E791
;01 E99C
;02 E9EC
;03 E9BF
;04 EA21
;05 EAC3
;06 EB42
;07 E906
;08 E906
;09 E906
;0A EBEC
;0B F0DB
;0C E906
;0D E906
;0E EBEC
;0F E97B
;10 F0D5
;11 F115
;12 F134
; INT 60 function 0
F000:E791 06 PUSH ES
F000:E792 1E PUSH DS
F000:E793 50 PUSH AX
F000:E794 53 PUSH BX
F000:E795 51 PUSH CX
F000:E796 52 PUSH DX
F000:E797 56 PUSH SI
F000:E798 57 PUSH DI
F000:E799 3C22 CMP AL,22
F000:E79B 7404 JZ E7A1
F000:E79D 3C32 CMP AL,32
F000:E79F 7503 JNZ E7A4
F000:E7A1 E95A01 JMP E8FE
F000:E7A4 B404 MOV AH,04
F000:E7A6 E828FE CALL E5D1
F000:E7A9 8AF0 MOV DH,AL
F000:E7AB 80E60F AND DH,0F
F000:E7AE 8AD0 MOV DL,AL
F000:E7B0 B104 MOV CL,04
F000:E7B2 D2EA SHR DL,CL
F000:E7B4 8AE0 MOV AH,AL
F000:E7B6 B004 MOV AL,04
F000:E7B8 E8850B CALL F340
F000:E7BB 0E PUSH CS
F000:E7BC 1F POP DS
F000:E7BD B91200 MOV CX,0012
F000:E7C0 BE2FE9 MOV SI,E92F
F000:E7C3 90 NOP
F000:E7C4 8BFB MOV DI,BX
F000:E7C6 83C70A ADD DI,+0A
F000:E7C9 F3A5 REP MOVSW
F000:E7CB 8AC4 MOV AL,AH
F000:E7CD 2403 AND AL,03
F000:E7CF D0EC SHR AH,1
F000:E7D1 D0EC SHR AH,1
F000:E7D3 80E41C AND AH,1C
F000:E7D6 0AE0 OR AH,AL
F000:E7D8 2608670B OR ES:[BX+0B],AH
F000:E7DC 80FA00 CMP DL,00
F000:E7DF 750B JNZ E7EC
F000:E7E1 26804F0B20 OR BYTE PTR ES:[BX+0B],20
F000:E7E6 26C747140400 MOV WORD PTR ES:[BX+14],0004
F000:E7EC 80FA02 CMP DL,02
F000:E7EF 740D JZ E7FE
F000:E7F1 80FA03 CMP DL,03
F000:E7F4 7408 JZ E7FE
F000:E7F6 80FA04 CMP DL,04
F000:E7F9 740B JZ E806
F000:E7FB EB0E JMP E80B
F000:E7FD 90 NOP
F000:E7FE 26C6470A01 MOV BYTE PTR ES:[BX+0A],01
F000:E803 EB06 JMP E80B
F000:E805 90 NOP
F000:E806 26C6470A02 MOV BYTE PTR ES:[BX+0A],02
F000:E80B 80FE02 CMP DH,02
F000:E80E 750A JNZ E81A
F000:E810 26C6470C10 MOV BYTE PTR ES:[BX+0C],10
F000:E815 26C6470F01 MOV BYTE PTR ES:[BX+0F],01
F000:E81A 80FA03 CMP DL,03
F000:E81D 7405 JZ E824
F000:E81F 80FA04 CMP DL,04
F000:E822 751B JNZ E83F
F000:E824 26C6470D08 MOV BYTE PTR ES:[BX+0D],08
F000:E829 26C6470E10 MOV BYTE PTR ES:[BX+0E],10
F000:E82E 26C6471050 MOV BYTE PTR ES:[BX+10],50
F000:E833 26C7471D0100 MOV WORD PTR ES:[BX+1D],0001
F000:E839 26C7471F0800 MOV WORD PTR ES:[BX+1F],0008
F000:E83F 80FE00 CMP DH,00
F000:E842 7412 JZ E856
F000:E844 80FE01 CMP DH,01
F000:E847 7408 JZ E851
F000:E849 26C6471119 MOV BYTE PTR ES:[BX+11],19
F000:E84E EB06 JMP E856
F000:E850 90 NOP
F000:E851 26C6471114 MOV BYTE PTR ES:[BX+11],14
F000:E856 B85000 MOV AX,0050
F000:E859 26F66711 MUL BYTE PTR ES:[BX+11]
F000:E85D 2689471B MOV ES:[BX+1B],AX
F000:E861 32E4 XOR AH,AH
F000:E863 8AC2 MOV AL,DL
F000:E865 D0E0 SHL AL,1
F000:E867 D0E0 SHL AL,1
F000:E869 02C6 ADD AL,DH
F000:E86B 8BF0 MOV SI,AX
F000:E86D 2E8A8407E9 MOV AL,CS:[SI+E907]
F000:E872 2688472B MOV ES:[BX+2B],AL
F000:E876 2E8A841BE9 MOV AL,CS:[SI+E91B]
F000:E87B 2688472C MOV ES:[BX+2C],AL
F000:E87F 80FE00 CMP DH,00
F000:E882 740C JZ E890
F000:E884 80FE01 CMP DH,01
F000:E887 740C JZ E895
F000:E889 BE1C00 MOV SI,001C
F000:E88C 90 NOP
F000:E88D EB0A JMP E899
F000:E88F 90 NOP
F000:E890 33F6 XOR SI,SI
F000:E892 EB05 JMP E899
F000:E894 90 NOP
F000:E895 BE1000 MOV SI,0010
F000:E898 90 NOP
F000:E899 2E8A845EE9 MOV AL,CS:[SI+E95E]
F000:E89E 26884718 MOV ES:[BX+18],AL
F000:E8A2 B90C00 MOV CX,000C
F000:E8A5 B000 MOV AL,00
F000:E8A7 2E8A9453E9 MOV DL,CS:[SI+E953]
F000:E8AC E8340A CALL F2E3
F000:E8AF FEC0 INC AL
F000:E8B1 46 INC SI
F000:E8B2 E2F3 LOOP E8A7
F000:E8B4 E85E08 CALL F115
F000:E8B7 53 PUSH BX
F000:E8B8 06 PUSH ES
F000:E8B9 B401 MOV AH,01
F000:E8BB CD6E INT 6E
F000:E8BD 26F6470408 TEST BYTE PTR ES:[BX+04],08
F000:E8C2 07 POP ES
F000:E8C3 5B POP BX
F000:E8C4 7408 JZ E8CE
F000:E8C6 B011 MOV AL,11
F000:E8C8 E8F801 CALL EAC3
F000:E8CB E84709 CALL F215
F000:E8CE B000 MOV AL,00
F000:E8D0 E8F001 CALL EAC3
F000:E8D3 E83F09 CALL F215
F000:E8D6 B000 MOV AL,00
F000:E8D8 268A670A MOV AH,ES:[BX+0A]
F000:E8DC 80FC00 CMP AH,00
F000:E8DF 740A JZ E8EB
F000:E8E1 80FC02 CMP AH,02
F000:E8E4 7507 JNZ E8ED
F000:E8E6 B002 MOV AL,02
F000:E8E8 EB03 JMP E8ED
F000:E8EA 90 NOP
F000:E8EB B001 MOV AL,01
F000:E8ED 26807F0C10 CMP BYTE PTR ES:[BX+0C],10
F000:E8F2 7502 JNZ E8F6
F000:E8F4 0C04 OR AL,04
F000:E8F6 E83B0A CALL F334
F000:E8F9 B005 MOV AL,05
F000:E8FB E8420A CALL F340
F000:E8FE 5F POP DI
F000:E8FF 5E POP SI
F000:E900 5A POP DX
F000:E901 59 POP CX
F000:E902 5B POP BX
F000:E903 58 POP AX
F000:E904 1F POP DS
F000:E905 07 POP ES
; INT 60 Functons 07, 08, 09, 0C, 0D point here (null)
F000:E906 C3 RET
F000:E900 00-00 02 00 00 00 02 00 01 .........
F000:E910 01 03 00 05 05 02 00 04-04 02 00 00 00 02 00 00 ................
F000:E920 00 02 00 01 01 03 00 05-05 04 00 04 04 04 00 00 ................
F000:E930 80 08 10 20 00 28 19 00-77 00 00 00 60 07 00 A0 ... .(..w...`...
F000:E940 D0 07 02 00 10 00 50 00-50 00 30 07 00 00 00 00 ......P.P.0.....
F000:E950 00 00 00 37 28 2C 84 1F-00 19 1B 00 07 60 07 00 ...7(,.......`..
F000:E960 00 00 00 37 28 2C 84 18-09 14 16 00 09 60 09 37 ...7(,.......`.7
F000:E970 28 2C 34 1A 07 19 19 03-0E 60 0F
; INT 60 Function 0F
F000:E97B 06 PUSH ES
F000:E97C 53 PUSH BX
F000:E97D 50 PUSH AX
F000:E97E B404 MOV AH,04
F000:E980 E84EFC CALL E5D1
F000:E983 268A7F0B MOV BH,ES:[BX+0B]
F000:E987 80E71F AND BH,1F
F000:E98A D1EB SHR BX,1
F000:E98C D1EB SHR BX,1
F000:E98E D0E7 SHL BH,1
F000:E990 D0E7 SHL BH,1
F000:E992 D1E3 SHL BX,1
F000:E994 D1E3 SHL BX,1
F000:E996 58 POP AX
F000:E997 8AC7 MOV AL,BH
F000:E999 5B POP BX
F000:E99A 07 POP ES
F000:E99B C3 RET
; INT 60 function 01
F000:E99C 06 PUSH ES
F000:E99D 50 PUSH AX
F000:E99E 53 PUSH BX
F000:E99F 52 PUSH DX
F000:E9A0 B404 MOV AH,04
F000:E9A2 E82CFC CALL E5D1
F000:E9A5 80E560 AND CH,60
F000:E9A8 268A5717 MOV DL,ES:[BX+17]
F000:E9AC 80E29F AND DL,9F
F000:E9AF 0AD5 OR DL,CH
F000:E9B1 26885717 MOV ES:[BX+17],DL
F000:E9B5 B00A MOV AL,0A
F000:E9B7 E82909 CALL F2E3
F000:E9BA 5A POP DX
F000:E9BB 5B POP BX
F000:E9BC 58 POP AX
F000:E9BD 07 POP ES
F000:E9BE C3 RET
; INT 60 function 03
F000:E9BF 06 PUSH ES
F000:E9C0 53 PUSH BX
F000:E9C1 50 PUSH AX
F000:E9C2 B404 MOV AH,04
F000:E9C4 E80AFC CALL E5D1
F000:E9C7 268B4714 MOV AX,ES:[BX+14]
F000:E9CB 99 CWD
F000:E9CC 2EF736EAE9 DIV WORD PTR CS:[E9EA]
F000:E9D1 8AF0 MOV DH,AL
F000:E9D3 26807F1028 CMP BYTE PTR ES:[BX+10],28
F000:E9D8 750C JNZ E9E6
F000:E9DA D0EA SHR DL,1
F000:E9DC 26F6470B20 TEST BYTE PTR ES:[BX+0B],20
F000:E9E1 7403 JZ E9E6
F000:E9E3 80EA02 SUB DL,02
F000:E9E6 58 POP AX
F000:E9E7 5B POP BX
F000:E9E8 07 POP ES
F000:E9E9 C3 RET
F000:E9EA 50 00
; INT 60 function 02
F000:E9EC 50 PUSH AX
F000:E9ED 53 PUSH BX
F000:E9EE 52 PUSH DX
F000:E9EF 57 PUSH DI
F000:E9F0 06 PUSH ES
F000:E9F1 B404 MOV AH,04
F000:E9F3 E8DBFB CALL E5D1
F000:E9F6 26F6470B20 TEST BYTE PTR ES:[BX+0B],20
F000:E9FB 7403 JZ EA00
F000:E9FD 80C202 ADD DL,02
F000:EA00 8AC6 MOV AL,DH
F000:EA02 2EF62620EA MUL BYTE PTR CS:[EA20]
F000:EA07 8BF8 MOV DI,AX
F000:EA09 8AC2 MOV AL,DL
F000:EA0B 32E4 XOR AH,AH
F000:EA0D 26F7671D MUL WORD PTR ES:[BX+1D]
F000:EA11 03C7 ADD AX,DI
F000:EA13 26894714 MOV ES:[BX+14],AX
F000:EA17 E84E09 CALL F368
F000:EA1A 07 POP ES
F000:EA1B 5F POP DI
F000:EA1C 5A POP DX
F000:EA1D 5B POP BX
F000:EA1E 58 POP AX
F000:EA1F C3 RET
F000:EA20 50
; INT 60 Function 04
F000:EA21 53 PUSH BX
F000:EA22 06 PUSH ES
F000:EA23 50 PUSH AX
F000:EA24 B404 MOV AH,04
F000:EA26 E8A8FB CALL E5D1
F000:EA29 BA0300 MOV DX,0003
F000:EA2C B006 MOV AL,06
F000:EA2E EE OUT DX,AL
F000:EA2F B007 MOV AL,07
F000:EA31 EE OUT DX,AL
F000:EA32 26F6473001 TEST BYTE PTR ES:[BX+30],01
F000:EA37 7507 JNZ EA40
F000:EA39 33C0 XOR AX,AX
F000:EA3B 32F6 XOR DH,DH
F000:EA3D EB2A JMP EA69
F000:EA3F 90 NOP
F000:EA40 26C6473000 MOV BYTE PTR ES:[BX+30],00
F000:EA45 B601 MOV DH,01
F000:EA47 268B472E MOV AX,ES:[BX+2E]
F000:EA4B 2D0300 SUB AX,0003
F000:EA4E 2EF63675EA DIV BYTE PTR CS:[EA75]
F000:EA53 26807F1028 CMP BYTE PTR ES:[BX+10],28
F000:EA58 7405 JZ EA5F
F000:EA5A D0E4 SHL AH,1
F000:EA5C EB0B JMP EA69
F000:EA5E 90 NOP
F000:EA5F 26F6470B20 TEST BYTE PTR ES:[BX+0B],20
F000:EA64 7403 JZ EA69
F000:EA66 80EC02 SUB AH,02
F000:EA69 8AD4 MOV DL,AH
F000:EA6B 8ADE MOV BL,DH
F000:EA6D 8AF0 MOV DH,AL
F000:EA6F 58 POP AX
F000:EA70 8AC3 MOV AL,BL
F000:EA72 07 POP ES
F000:EA73 5B POP BX
F000:EA74 C3 RET
EAC3 INT 60 05
EB42 INT 60 06
EBEC INT 60 0A 0E
; INT 60 AH = 0A print AL
F000:EBEC 06 PUSH ES
F000:EBED 1E PUSH DS
F000:EBEE 50 PUSH AX
F000:EBEF 53 PUSH BX
F000:EBF0 51 PUSH CX
F000:EBF1 52 PUSH DX
F000:EBF2 55 PUSH BP
F000:EBF3 56 PUSH SI
F000:EBF4 57 PUSH DI
F000:EBF5 B404 MOV AH,04
F000:EBF7 E8D7F9 CALL E5D1
F000:EBFA 3C20 CMP AL,20
F000:EBFC 7203 JB EC01
F000:EBFE E9BF00 JMP ECC0
F000:EC01 26F6472D10 TEST BYTE PTR ES:[BX+2D],10
F000:EC06 7403 JZ EC0B
F000:EC08 E9B500 JMP ECC0
F000:EC0B 3C07 CMP AL,07
F000:EC0D 7509 JNZ EC18
F000:EC0F B005 MOV AL,05
F000:EC11 B401 MOV AH,01
F000:EC13 CD68 INT 68
F000:EC15 E9AB00 JMP ECC3
F000:EC18 3C08 CMP AL,08
F000:EC1A 7525 JNZ EC41
F000:EC1C 268B4714 MOV AX,ES:[BX+14]
F000:EC20 262B471D SUB AX,ES:[BX+1D]
F000:EC24 7818 JS EC3E
F000:EC26 26894714 MOV ES:[BX+14],AX
F000:EC2A B020 MOV AL,20
F000:EC2C E89E00 CALL ECCD
F000:EC2F 268B4714 MOV AX,ES:[BX+14]
F000:EC33 262B471D SUB AX,ES:[BX+1D]
F000:EC37 26894714 MOV ES:[BX+14],AX
F000:EC3B E82A07 CALL F368
F000:EC3E E98200 JMP ECC3
F000:EC41 3C09 CMP AL,09
F000:EC43 7521 JNZ EC66
F000:EC45 268B4714 MOV AX,ES:[BX+14]
F000:EC49 99 CWD
F000:EC4A 26F7771F DIV WORD PTR ES:[BX+1F]
F000:EC4E 26F7671F MUL WORD PTR ES:[BX+1F]
F000:EC52 2603471F ADD AX,ES:[BX+1F]
F000:EC56 263B471B CMP AX,ES:[BX+1B]
F000:EC5A 7307 JAE EC63
F000:EC5C 26894714 MOV ES:[BX+14],AX
F000:EC60 E80507 CALL F368
F000:EC63 EB5E JMP ECC3
F000:EC65 90 NOP
F000:EC66 3C0A CMP AL,0A
F000:EC68 7531 JNZ EC9B
F000:EC6A 268B4714 MOV AX,ES:[BX+14]
F000:EC6E 26034721 ADD AX,ES:[BX+21]
F000:EC72 26F6472D20 TEST BYTE PTR ES:[BX+2D],20
F000:EC77 740C JZ EC85
F000:EC79 263B4725 CMP AX,ES:[BX+25]
F000:EC7D 7212 JB EC91
F000:EC7F E8B204 CALL F134
F000:EC82 EB11 JMP EC95
F000:EC84 90 NOP
F000:EC85 263B471B CMP AX,ES:[BX+1B]
F000:EC89 7206 JB EC91
F000:EC8B E8B4FE CALL EB42
F000:EC8E EB05 JMP EC95
F000:EC90 90 NOP
F000:EC91 26894714 MOV ES:[BX+14],AX
F000:EC95 E8D006 CALL F368
F000:EC98 EB29 JMP ECC3
F000:EC9A 90 NOP
F000:EC9B 3C0C CMP AL,0C
F000:EC9D 7506 JNZ ECA5
F000:EC9F E87305 CALL F215
F000:ECA2 EB1F JMP ECC3
F000:ECA4 90 NOP
F000:ECA5 3C0D CMP AL,0D
F000:ECA7 751A JNZ ECC3
F000:ECA9 268B4714 MOV AX,ES:[BX+14]
F000:ECAD 99 CWD
F000:ECAE 26F77723 DIV WORD PTR ES:[BX+23]
F000:ECB2 26F76723 MUL WORD PTR ES:[BX+23]
F000:ECB6 26894714 MOV ES:[BX+14],AX
F000:ECBA E8AB06 CALL F368
F000:ECBD EB04 JMP ECC3 ; Return
F000:ECBF 90 NOP
F000:ECC0 E80A00 CALL ECCD
F000:ECC3 5F POP DI
F000:ECC4 5E POP SI
F000:ECC5 5D POP BP
F000:ECC6 5A POP DX
F000:ECC7 59 POP CX
F000:ECC8 5B POP BX
F000:ECC9 58 POP AX
F000:ECCA 1F POP DS
F000:ECCB 07 POP ES
F000:ECCC C3 RET
F000:ECCD 53 PUSH BX
F000:ECCE 06 PUSH ES
F000:ECCF 83EC20 SUB SP,+20
F000:ECD2 8BEC MOV BP,SP
F000:ECD4 884600 MOV [BP+00],AL
F0D5 INT 60 10
F0DB INT 60 0B
F115 INT 60 11
F134 INT 60 12
F2B6 61
; INT 63. Disk I/O.
; Guess: Drive is in AL, function is in AH (0..8, see jump table)
F000:F3D2 FB STI
F000:F3D3 FC CLD
F000:F3D4 52 PUSH DX
F000:F3D5 56 PUSH SI
F000:F3D6 57 PUSH DI
F000:F3D7 55 PUSH BP
F000:F3D8 1E PUSH DS
F000:F3D9 06 PUSH ES
F000:F3DA 53 PUSH BX
F000:F3DB 50 PUSH AX
F000:F3DC 3C04 CMP AL,04
F000:F3DE 7208 JB F3E8 ; Wild guess 0-3 are floppies, >3 is something else which does not yet exist
F000:F3E0 2C04 SUB AL,04
F000:F3E2 50 PUSH AX
F000:F3E3 B41C MOV AH,1C ; 1C workspace does not exist, maybe gets added by hard drive code?
F000:F3E5 EB04 JMP F3EB
F000:F3E7 90 NOP
F000:F3E8 50 PUSH AX ; AL = 0..4
F000:F3E9 B418 MOV AH,18
F000:F3EB E8E3F1 CALL E5D1 ; Get pointer to workspace (AH = 18, ES:BX = 0086:00D9)
F000:F3EE 51 PUSH CX
F000:F3EF 98 CBW
F000:F3F0 B509 MOV CH,09
F000:F3F2 F6E5 MUL CH
F000:F3F4 8BFB MOV DI,BX
F000:F3F6 83C715 ADD DI,+15 ; 21 bytes workspace, 9 bytes per drive
F000:F3F9 03F8 ADD DI,AX ; DI points at 9 bytes for this floppy drive
F000:F3FB 59 POP CX
F000:F3FC 58 POP AX
F000:F3FD 50 PUSH AX
F000:F3FE 8AC4 MOV AL,AH
F000:F400 98 CBW ; Assuming AH is < 128 then AX is now = AH
F000:F401 D1E0 SHL AX,1
F000:F403 8BF0 MOV SI,AX
F000:F405 3D1200 CMP AX,0012
F000:F408 90 NOP
F000:F409 58 POP AX
F000:F40A 7203 JB F40F
F000:F40C E9B101 JMP F5C0 ; Return
F000:F40F 2EFFA414F4 JMP WORD PTR CS:[SI+F414]
; Jump table 9 entries
F000:F410 F7 F6 26 F4-37 F4 27 F5 2E F4 C0 F5
F000:F420 AD F8 25 F9 2F F9
; F6F7 INT 63 AH=0
; F426 INT 63 AH=1
; F437 INT 63 AH=2
; F527 INT 63 AH=3
; F42E INT 63 AH=4
; F5C0 INT 63 AH=5
; F8AD INT 63 AH=6
; F925 INT 63 AH=7
; F92F INT 63 AH=8
; F426 INT 63 AH=1
F000:F426 58 POP AX
F000:F427 268A4712 MOV AL,ES:[BX+12]
F000:F42B E99201 JMP F5C0 ; Routine ends
; F42E INT 63 AH=4
F000:F42E 5D POP BP
F000:F42F 5E POP SI
F000:F430 56 PUSH SI
F000:F431 55 PUSH BP
F000:F432 33ED XOR BP,BP
F000:F434 EB08 JMP F43E
F000:F436 90 NOP
; F437 INT 63 AH=2
F000:F437 5D POP BP
F000:F438 5E POP SI
F000:F439 56 PUSH SI
F000:F43A 55 PUSH BP
F000:F43B BD0040 MOV BP,4000
F000:F43E E80902 CALL F64A
F000:F441 726F JB F4B2
F000:F443 E83B03 CALL F781
F000:F446 726A JB F4B2
F000:F448 56 PUSH SI
F000:F449 1E PUSH DS
F000:F44A 23ED AND BP,BP
F000:F44C 740A JZ F458
F000:F44E 26F64710FF TEST BYTE PTR ES:[BX+10],FF
F000:F453 740C JZ F461
F000:F455 EB06 JMP F45D
F000:F457 90 NOP
F000:F458 26C6471000 MOV BYTE PTR ES:[BX+10],00
F000:F45D 26C57708 LDS SI,ES:[BX+08]
F000:F461 E85100 CALL F4B5
F000:F464 7305 JAE F46B
F000:F466 1F POP DS
F000:F467 5E POP SI
F000:F468 EB48 JMP F4B2
F000:F46A 90 NOP
F000:F46B 2681470E0001 ADD WORD PTR ES:[BX+0E],0100
F000:F471 23ED AND BP,BP
F000:F473 7404 JZ F479
F000:F475 26037504 ADD SI,ES:[DI+04]
F000:F479 E2E6 LOOP F461
F000:F47B 26F64710FF TEST BYTE PTR ES:[BX+10],FF
F000:F480 1F POP DS
F000:F481 7504 JNZ F487
F000:F483 5A POP DX
F000:F484 EB21 JMP F4A7
F000:F486 90 NOP
F000:F487 5E POP SI
F000:F488 26C6471000 MOV BYTE PTR ES:[BX+10],00
F000:F48D 268B4D04 MOV CX,ES:[DI+04]
F000:F491 57 PUSH DI
F000:F492 06 PUSH ES
F000:F493 8BFE MOV DI,SI
F000:F495 8CDA MOV DX,DS
F000:F497 26C57708 LDS SI,ES:[BX+08]
F000:F49B 8EC2 MOV ES,DX
F000:F49D F3A4 REP MOVSB
F000:F49F 8BF7 MOV SI,DI
F000:F4A1 8CC7 MOV DI,ES
F000:F4A3 8EDF MOV DS,DI
F000:F4A5 07 POP ES
F000:F4A6 5F POP DI
F000:F4A7 26837F0C00 CMP WORD PTR ES:[BX+0C],+00
F000:F4AC 7595 JNZ F443
F000:F4AE F8 CLC
F000:F4AF E9FC00 JMP F5AE
F000:F4B2 E9D700 JMP F58C
F000:F4B5 50 PUSH AX
F000:F4B6 51 PUSH CX
F000:F4B7 E82C02 CALL F6E6
F000:F4BA B40A MOV AH,0A
F000:F4BC 268B4D04 MOV CX,ES:[DI+04]
F000:F4C0 49 DEC CX
F000:F4C1 80CD40 OR CH,40
F000:F4C4 E89A03 CALL F861
F000:F4C7 E81E04 CALL F8E8
F000:F4CA 7305 JAE F4D1
F000:F4CC B211 MOV DL,11
F000:F4CE EB53 JMP F523
F000:F4D0 90 NOP
F000:F4D1 0C80 OR AL,80
F000:F4D3 E8EA03 CALL F8C0
F000:F4D6 7305 JAE F4DD
F000:F4D8 B212 MOV DL,12
F000:F4DA EB47 JMP F523
F000:F4DC 90 NOP
F000:F4DD 249C AND AL,9C
F000:F4DF 7515 JNZ F4F6
F000:F4E1 8AE8 MOV CH,AL
F000:F4E3 BA1800 MOV DX,0018
F000:F4E6 EC IN AL,DX
F000:F4E7 268A4F07 MOV CL,ES:[BX+07]
F000:F4EB FEC1 INC CL
F000:F4ED D2E8 SHR AL,CL
F000:F4EF 722E JB F51F
F000:F4F1 B213 MOV DL,13
F000:F4F3 EB2E JMP F523
F000:F4F5 90 NOP
F000:F4F6 8AE8 MOV CH,AL
F000:F4F8 B000 MOV AL,00
F000:F4FA FECC DEC AH
F000:F4FC 7402 JZ F500
F000:F4FE EBBC JMP F4BC
F000:F500 8AC5 MOV AL,CH
F000:F502 2490 AND AL,90
F000:F504 7505 JNZ F50B
F000:F506 B004 MOV AL,04
F000:F508 EB0C JMP F516
F000:F50A 90 NOP
F000:F50B 2480 AND AL,80
F000:F50D 7505 JNZ F514
F000:F50F B008 MOV AL,08
F000:F511 EB03 JMP F516
F000:F513 90 NOP
F000:F514 B002 MOV AL,02
F000:F516 26884714 MOV ES:[BX+14],AL
F000:F51A B214 MOV DL,14
F000:F51C EB05 JMP F523
F000:F51E 90 NOP
F000:F51F F8 CLC
F000:F520 EB02 JMP F524
F000:F522 90 NOP
F000:F523 F9 STC
F000:F524 59 POP CX
F000:F525 58 POP AX
F000:F526 C3 RET
; F527 INT 63 AH=3
F000:F527 5D POP BP
F000:F528 5E POP SI
F000:F529 56 PUSH SI
F000:F52A 55 PUSH BP
F000:F52B E81C01 CALL F64A
F000:F52E 725C JB F58C
F000:F530 E84E02 CALL F781
F000:F533 7257 JB F58C
F000:F535 26F64710FF TEST BYTE PTR ES:[BX+10],FF
F000:F53A 56 PUSH SI
F000:F53B 1E PUSH DS
F000:F53C 7414 JZ F552
F000:F53E 51 PUSH CX
F000:F53F 268B4D04 MOV CX,ES:[DI+04]
F000:F543 57 PUSH DI
F000:F544 06 PUSH ES
F000:F545 26C47F08 LES DI,ES:[BX+08]
F000:F549 F3A4 REP MOVSB
F000:F54B 07 POP ES
F000:F54C 5F POP DI
F000:F54D 26C57708 LDS SI,ES:[BX+08]
F000:F551 59 POP CX
F000:F552 E87500 CALL F5CA
F000:F555 7306 JAE F55D
F000:F557 83C404 ADD SP,+04
F000:F55A EB30 JMP F58C
F000:F55C 90 NOP
F000:F55D 2681470E0001 ADD WORD PTR ES:[BX+0E],0100
F000:F563 26037504 ADD SI,ES:[DI+04]
F000:F567 E2E9 LOOP F552
F000:F569 26F64710FF TEST BYTE PTR ES:[BX+10],FF
F000:F56E 740E JZ F57E
F000:F570 26C6471000 MOV BYTE PTR ES:[BX+10],00
F000:F575 1F POP DS
F000:F576 5E POP SI
F000:F577 26037504 ADD SI,ES:[DI+04]
F000:F57B EB04 JMP F581
F000:F57D 90 NOP
F000:F57E 83C404 ADD SP,+04
F000:F581 26837F0C00 CMP WORD PTR ES:[BX+0C],+00
F000:F586 75A8 JNZ F530
F000:F588 F8 CLC
F000:F589 EB23 JMP F5AE
F000:F58B 90 NOP
F000:F58C 26885713 MOV ES:[BX+13],DL
F000:F590 52 PUSH DX
F000:F591 268B5703 MOV DX,ES:[BX+03]
F000:F595 83C204 ADD DX,+04
F000:F598 268A4508 MOV AL,ES:[DI+08]
F000:F59C 24FB AND AL,FB
F000:F59E 26884508 MOV ES:[DI+08],AL
F000:F5A2 EE OUT DX,AL
F000:F5A3 26C64507FF MOV BYTE PTR ES:[DI+07],FF
F000:F5A8 58 POP AX
F000:F5A9 B408 MOV AH,08
F000:F5AB CD6D INT 6D
F000:F5AD F9 STC
F000:F5AE 268B5703 MOV DX,ES:[BX+03]
F000:F5B2 EC IN AL,DX
F000:F5B3 9C PUSHF
F000:F5B4 26034F0C ADD CX,ES:[BX+0C]
F000:F5B8 268A5F14 MOV BL,ES:[BX+14]
F000:F5BC 9D POPF
F000:F5BD 58 POP AX
F000:F5BE 8AC3 MOV AL,BL
; Routine ends
; F5C0 INT 63 AH=5 points here
F000:F5C0 5B POP BX
F000:F5C1 07 POP ES
F000:F5C2 1F POP DS
F000:F5C3 5D POP BP
F000:F5C4 5F POP DI
F000:F5C5 5E POP SI
F000:F5C6 5A POP DX
F000:F5C7 CA0200 RETF 0002
F000:F5CA 50 PUSH AX
F000:F5CB 51 PUSH CX
F000:F5CC E81701 CALL F6E6
F000:F5CF B40A MOV AH,0A
F000:F5D1 268B4D04 MOV CX,ES:[DI+04]
F000:F5D5 49 DEC CX
F000:F5D6 80CD80 OR CH,80
F000:F5D9 E88502 CALL F861
F000:F5DC E80903 CALL F8E8
F000:F5DF 7305 JAE F5E6
F000:F5E1 B216 MOV DL,16
F000:F5E3 EB61 JMP F646
F000:F5E5 90 NOP
F000:F5E6 0CA0 OR AL,A0
F000:F5E8 E8D502 CALL F8C0
F000:F5EB 7305 JAE F5F2
F000:F5ED B217 MOV DL,17
F000:F5EF EB55 JMP F646
F000:F5F1 90 NOP
F000:F5F2 24FC AND AL,FC
F000:F5F4 7513 JNZ F609
F000:F5F6 BA1800 MOV DX,0018
F000:F5F9 EC IN AL,DX
F000:F5FA 268A4F07 MOV CL,ES:[BX+07]
F000:F5FE FEC1 INC CL
F000:F600 D2E8 SHR AL,CL
F000:F602 723E JB F642
F000:F604 B218 MOV DL,18
F000:F606 EB3E JMP F646
F000:F608 90 NOP
F000:F609 24BC AND AL,BC
F000:F60B 7425 JZ F632
F000:F60D FECC DEC AH
F000:F60F 7402 JZ F613
F000:F611 EBBE JMP F5D1
F000:F613 24F0 AND AL,F0
F000:F615 7505 JNZ F61C
F000:F617 B004 MOV AL,04
F000:F619 EB1E JMP F639
F000:F61B 90 NOP
F000:F61C 24E0 AND AL,E0
F000:F61E 7505 JNZ F625
F000:F620 B008 MOV AL,08
F000:F622 EB15 JMP F639
F000:F624 90 NOP
F000:F625 24C0 AND AL,C0
F000:F627 7505 JNZ F62E
F000:F629 B00A MOV AL,0A
F000:F62B EB0C JMP F639
F000:F62D 90 NOP
F000:F62E 2480 AND AL,80
F000:F630 7505 JNZ F637
F000:F632 B000 MOV AL,00
F000:F634 EB03 JMP F639
F000:F636 90 NOP
F000:F637 B002 MOV AL,02
F000:F639 26884714 MOV ES:[BX+14],AL
F000:F63D B219 MOV DL,19
F000:F63F EB05 JMP F646
F000:F641 90 NOP
F000:F642 F8 CLC
F000:F643 EB02 JMP F647
F000:F645 90 NOP
F000:F646 F9 STC
F000:F647 59 POP CX
F000:F648 58 POP AX
F000:F649 C3 RET
F000:F64A 8AE0 MOV AH,AL
F000:F64C 50 PUSH AX
F000:F64D 26C6471300 MOV BYTE PTR ES:[BX+13],00
F000:F652 26C647140C MOV BYTE PTR ES:[BX+14],0C
F000:F657 26894F0C MOV ES:[BX+0C],CX
F000:F65B 8BCA MOV CX,DX
F000:F65D 263A6D03 CMP CH,ES:[DI+03]
F000:F661 7613 JBE F676
F000:F663 26807D0102 CMP BYTE PTR ES:[DI+01],02
F000:F668 7405 JZ F66F
F000:F66A B21C MOV DL,1C
F000:F66C EB44 JMP F6B2
F000:F66E 90 NOP
F000:F66F 262A6D03 SUB CH,ES:[DI+03]
F000:F673 80CC08 OR AH,08
F000:F676 26886508 MOV ES:[DI+08],AH
-u
F000:F67A 268A4507 MOV AL,ES:[DI+07]
F000:F67E 268B5703 MOV DX,ES:[BX+03]
F000:F682 83C201 ADD DX,+01
F000:F685 EE OUT DX,AL
F000:F686 26894F0E MOV ES:[BX+0E],CX
F000:F68A 26884D07 MOV ES:[DI+07],CL
F000:F68E 3AC1 CMP AL,CL
F000:F690 7423 JZ F6B5
F000:F692 3CFF CMP AL,FF
F000:F694 750B JNZ F6A1
F000:F696 8AC4 MOV AL,AH
F000:F698 E86300 CALL F6FE
-u
F000:F69B 26884D07 MOV ES:[DI+07],CL
F000:F69F 7211 JB F6B2
F000:F6A1 E84402 CALL F8E8
F000:F6A4 7305 JAE F6AB
F000:F6A6 B21B MOV DL,1B
F000:F6A8 EB08 JMP F6B2
F000:F6AA 90 NOP
F000:F6AB E80900 CALL F6B7
F000:F6AE 7305 JAE F6B5
F000:F6B0 B21D MOV DL,1D
F000:F6B2 33C9 XOR CX,CX
F000:F6B4 F9 STC
F000:F6B5 58 POP AX
F000:F6B6 C3 RET
F000:F6B7 50 PUSH AX
F000:F6B8 B403 MOV AH,03
F000:F6BA 268A4507 MOV AL,ES:[DI+07]
-u
F000:F6BE 268B5703 MOV DX,ES:[BX+03]
F000:F6C2 83C203 ADD DX,+03
F000:F6C5 EE OUT DX,AL
F000:F6C6 B01C MOV AL,1C
F000:F6C8 260A4506 OR AL,ES:[DI+06]
F000:F6CC E8F101 CALL F8C0
F000:F6CF 7305 JAE F6D6
F000:F6D1 B224 MOV DL,24
F000:F6D3 EB0E JMP F6E3
F000:F6D5 90 NOP
F000:F6D6 2498 AND AL,98
F000:F6D8 740A JZ F6E4
F000:F6DA FECC DEC AH
F000:F6DC 75DC JNZ F6BA
-u
F000:F6DE E88700 CALL F768
F000:F6E1 B225 MOV DL,25
F000:F6E3 F9 STC
F000:F6E4 58 POP AX
F000:F6E5 C3 RET
F000:F6E6 50 PUSH AX
F000:F6E7 268B470E MOV AX,ES:[BX+0E]
F000:F6EB 8AC4 MOV AL,AH
F000:F6ED 268B5703 MOV DX,ES:[BX+03]
F000:F6F1 83C202 ADD DX,+02
F000:F6F4 EE OUT DX,AL
F000:F6F5 58 POP AX
F000:F6F6 C3 RET
; F6F7 INT 63 AH=0
F000:F6F7 E80400 CALL F6FE
F000:F6FA 58 POP AX
F000:F6FB E9C2FE JMP F5C0
-u
F000:F6FE 268B5703 MOV DX,ES:[BX+03]
F000:F702 52 PUSH DX
F000:F703 0C04 OR AL,04
F000:F705 26884508 MOV ES:[DI+08],AL
F000:F709 EE OUT DX,AL
F000:F70A 5A POP DX
F000:F70B B0D0 MOV AL,D0
F000:F70D EE OUT DX,AL
F000:F70E 26C6450700 MOV BYTE PTR ES:[DI+07],00
F000:F713 E8D201 CALL F8E8
F000:F716 7205 JB F71D
F000:F718 E81B00 CALL F736
F000:F71B 7318 JAE F735
F000:F71D 26885713 MOV ES:[BX+13],DL
-u
F000:F721 268B5703 MOV DX,ES:[BX+03]
F000:F725 83C204 ADD DX,+04
F000:F728 268A4508 MOV AL,ES:[DI+08]
F000:F72C 24FB AND AL,FB
F000:F72E EE OUT DX,AL
F000:F72F 26C64507FF MOV BYTE PTR ES:[DI+07],FF
F000:F734 F9 STC
F000:F735 C3 RET
F000:F736 50 PUSH AX
F000:F737 B403 MOV AH,03
F000:F739 B008 MOV AL,08
F000:F73B 260A4506 OR AL,ES:[DI+06]
F000:F73F E87E01 CALL F8C0
-u
F000:F742 7305 JAE F749
F000:F744 B21E MOV DL,1E
F000:F746 EB1D JMP F765
F000:F748 90 NOP
F000:F749 2499 AND AL,99
F000:F74B 7419 JZ F766
F000:F74D B05B MOV AL,5B
F000:F74F 50 PUSH AX
F000:F750 E86D01 CALL F8C0
F000:F753 58 POP AX
F000:F754 50 PUSH AX
F000:F755 E86801 CALL F8C0
F000:F758 58 POP AX
F000:F759 E86401 CALL F8C0
F000:F75C FECC DEC AH
F000:F75E 75D9 JNZ F739
F000:F760 E80500 CALL F768
-u
F000:F763 B21F MOV DL,1F
F000:F765 F9 STC
F000:F766 58 POP AX
F000:F767 C3 RET
F000:F768 2418 AND AL,18
F000:F76A 7505 JNZ F771
F000:F76C B002 MOV AL,02
F000:F76E EB0C JMP F77C
F000:F770 90 NOP
F000:F771 2408 AND AL,08
F000:F773 7505 JNZ F77A
F000:F775 B006 MOV AL,06
F000:F777 EB03 JMP F77C
F000:F779 90 NOP
F000:F77A B004 MOV AL,04
F000:F77C 26884714 MOV ES:[BX+14],AL
F000:F780 C3 RET
F000:F781 E87200 CALL F7F6
-u
F000:F784 50 PUSH AX
F000:F785 7262 JB F7E9
F000:F787 268B4F0C MOV CX,ES:[BX+0C]
F000:F78B 268B570E MOV DX,ES:[BX+0E]
F000:F78F 263A7503 CMP DH,ES:[DI+03]
F000:F793 760A JBE F79F
F000:F795 262A7503 SUB DH,ES:[DI+03]
F000:F799 FEC2 INC DL
F000:F79B 2689570E MOV ES:[BX+0E],DX
F000:F79F 8AD6 MOV DL,DH
F000:F7A1 32F6 XOR DH,DH
F000:F7A3 8BC2 MOV AX,DX
-u
F000:F7A5 03D1 ADD DX,CX
F000:F7A7 4A DEC DX
F000:F7A8 51 PUSH CX
F000:F7A9 268A4D03 MOV CL,ES:[DI+03]
F000:F7AD 32ED XOR CH,CH
F000:F7AF 3BCA CMP CX,DX
F000:F7B1 59 POP CX
F000:F7B2 7309 JAE F7BD
F000:F7B4 268A4D03 MOV CL,ES:[DI+03]
F000:F7B8 32ED XOR CH,CH
F000:F7BA 41 INC CX
F000:F7BB 2BC8 SUB CX,AX
F000:F7BD 8CD8 MOV AX,DS
F000:F7BF 51 PUSH CX
F000:F7C0 B104 MOV CL,04
F000:F7C2 D3E0 SHL AX,CL
F000:F7C4 59 POP CX
-u
F000:F7C5 03C6 ADD AX,SI
F000:F7C7 7926 JNS F7EF
F000:F7C9 F7D8 NEG AX
F000:F7CB 33D2 XOR DX,DX
F000:F7CD 26F77504 DIV WORD PTR ES:[DI+04]
F000:F7D1 3BC1 CMP AX,CX
F000:F7D3 731A JAE F7EF
F000:F7D5 23C0 AND AX,AX
F000:F7D7 7405 JZ F7DE
F000:F7D9 8BC8 MOV CX,AX
F000:F7DB EB12 JMP F7EF
F000:F7DD 90 NOP
F000:F7DE B90100 MOV CX,0001
F000:F7E1 26C6471001 MOV BYTE PTR ES:[BX+10],01
-u
F000:F7E6 EB07 JMP F7EF
F000:F7E8 90 NOP
F000:F7E9 F9 STC
F000:F7EA 33C9 XOR CX,CX
F000:F7EC EB06 JMP F7F4
F000:F7EE 90 NOP
F000:F7EF 26294F0C SUB ES:[BX+0C],CX
F000:F7F3 F8 CLC
F000:F7F4 58 POP AX
F000:F7F5 C3 RET
F000:F7F6 B0D0 MOV AL,D0
F000:F7F8 268B5703 MOV DX,ES:[BX+03]
F000:F7FC EE OUT DX,AL
F000:F7FD 268B4F0E MOV CX,ES:[BX+0E]
F000:F801 263A6D03 CMP CH,ES:[DI+03]
F000:F805 763B JBE F842
-u
F000:F807 B501 MOV CH,01
F000:F809 268A4508 MOV AL,ES:[DI+08]
F000:F80D 26807D0102 CMP BYTE PTR ES:[DI+01],02
F000:F812 7509 JNZ F81D
F000:F814 A808 TEST AL,08
F000:F816 7505 JNZ F81D
F000:F818 0C08 OR AL,08
F000:F81A EB05 JMP F821
F000:F81C 90 NOP
F000:F81D 24F7 AND AL,F7
F000:F81F FEC1 INC CL
F000:F821 26884508 MOV ES:[DI+08],AL
F000:F825 26894F0E MOV ES:[BX+0E],CX
-u
F000:F829 26884D07 MOV ES:[DI+07],CL
F000:F82D 263A4D02 CMP CL,ES:[DI+02]
F000:F831 7605 JBE F838
F000:F833 B220 MOV DL,20
F000:F835 EB28 JMP F85F
F000:F837 90 NOP
F000:F838 E87CFE CALL F6B7
F000:F83B 7305 JAE F842
F000:F83D B222 MOV DL,22
F000:F83F EB1E JMP F85F
F000:F841 90 NOP
F000:F842 268B5703 MOV DX,ES:[BX+03]
F000:F846 EC IN AL,DX
F000:F847 F6D0 NOT AL
-u
F000:F849 2420 AND AL,20
F000:F84B 7402 JZ F84F
F000:F84D B004 MOV AL,04
F000:F84F 263A6711 CMP AH,ES:[BX+11]
F000:F853 7402 JZ F857
F000:F855 B004 MOV AL,04
F000:F857 26886711 MOV ES:[BX+11],AH
F000:F85B F8 CLC
F000:F85C EB02 JMP F860
F000:F85E 90 NOP
F000:F85F F9 STC
F000:F860 C3 RET
F000:F861 50 PUSH AX
F000:F862 51 PUSH CX
F000:F863 53 PUSH BX
F000:F864 51 PUSH CX
F000:F865 268A6F07 MOV CH,ES:[BX+07]
-u
F000:F869 8CDB MOV BX,DS
F000:F86B 8AE5 MOV AH,CH
F000:F86D B106 MOV CL,06
F000:F86F D2E4 SHL AH,CL
F000:F871 8AC7 MOV AL,BH
F000:F873 B104 MOV CL,04
F000:F875 D2E8 SHR AL,CL
F000:F877 B104 MOV CL,04
F000:F879 D3E3 SHL BX,CL
F000:F87B 03DE ADD BX,SI
F000:F87D 1400 ADC AL,00
F000:F87F 0AC4 OR AL,AH
F000:F881 BA0500 MOV DX,0005
F000:F884 EE OUT DX,AL
F000:F885 BA1000 MOV DX,0010
F000:F888 D0E5 SHL CH,1
-u
F000:F88A 02D5 ADD DL,CH
F000:F88C 8AC3 MOV AL,BL
F000:F88E EE OUT DX,AL
F000:F88F 8AC7 MOV AL,BH
F000:F891 EE OUT DX,AL
F000:F892 42 INC DX
F000:F893 58 POP AX
F000:F894 EE OUT DX,AL
F000:F895 8AC4 MOV AL,AH
F000:F897 EE OUT DX,AL
F000:F898 BA1800 MOV DX,0018
F000:F89B 5B POP BX
F000:F89C 268A4F07 MOV CL,ES:[BX+07]
F000:F8A0 FEC1 INC CL
F000:F8A2 32C0 XOR AL,AL
F000:F8A4 F9 STC
F000:F8A5 D2D0 RCL AL,CL
F000:F8A7 0C40 OR AL,40
F000:F8A9 EE OUT DX,AL
-u
F000:F8AA 59 POP CX
F000:F8AB 58 POP AX
F000:F8AC C3 RET
; F8AD INT 63 AH=6
F000:F8AD 58 POP AX
F000:F8AE 5E POP SI
F000:F8AF 56 PUSH SI
F000:F8B0 8AC2 MOV AL,DL
F000:F8B2 E83300 CALL F8E8
F000:F8B5 7206 JB F8BD
F000:F8B7 E8A7FF CALL F861
F000:F8BA E80300 CALL F8C0
F000:F8BD E900FD JMP F5C0
F000:F8C0 51 PUSH CX
F000:F8C1 268B5703 MOV DX,ES:[BX+03]
F000:F8C5 B90000 MOV CX,0000
F000:F8C8 26C64712FF MOV BYTE PTR ES:[BX+12],FF
-u
F000:F8CD EE OUT DX,AL
F000:F8CE FB STI
F000:F8CF 268A4712 MOV AL,ES:[BX+12]
F000:F8D3 3CFF CMP AL,FF
F000:F8D5 750E JNZ F8E5
F000:F8D7 50 PUSH AX
F000:F8D8 D40A AAM 0A
F000:F8DA D40A AAM 0A
F000:F8DC D40A AAM 0A
F000:F8DE 58 POP AX
F000:F8DF E2EE LOOP F8CF
F000:F8E1 F9 STC
F000:F8E2 EB02 JMP F8E6
F000:F8E4 90 NOP
F000:F8E5 F8 CLC
F000:F8E6 59 POP CX
F000:F8E7 C3 RET
F000:F8E8 50 PUSH AX
F000:F8E9 51 PUSH CX
F000:F8EA 268A4508 MOV AL,ES:[DI+08]
-u
F000:F8EE 24DF AND AL,DF
F000:F8F0 26F60508 TEST BYTE PTR ES:[DI],08
F000:F8F4 7402 JZ F8F8
F000:F8F6 0C20 OR AL,20
F000:F8F8 0C04 OR AL,04
F000:F8FA 268B5703 MOV DX,ES:[BX+03]
F000:F8FE 83C204 ADD DX,+04
F000:F901 EE OUT DX,AL
F000:F902 26884508 MOV ES:[DI+08],AL
F000:F906 B90080 MOV CX,8000
F000:F909 268B5703 MOV DX,ES:[BX+03]
F000:F90D EC IN AL,DX
-u
F000:F90E 2480 AND AL,80
F000:F910 7410 JZ F922
F000:F912 50 PUSH AX
F000:F913 D40A AAM 0A
F000:F915 D40A AAM 0A
F000:F917 D40A AAM 0A
F000:F919 58 POP AX
F000:F91A E2ED LOOP F909
F000:F91C F9 STC
F000:F91D 26C6471402 MOV BYTE PTR ES:[BX+14],02
F000:F922 59 POP CX
F000:F923 58 POP AX
F000:F924 C3 RET
; F925 INT 63 AH=7
F000:F925 58 POP AX
F000:F926 5E POP SI
F000:F927 B90700 MOV CX,0007
F000:F92A F3A4 REP MOVSB
F000:F92C E992FC JMP F5C1
; F92F INT 63 AH=8
F000:F92F 58 POP AX
F000:F930 5B POP BX
F000:F931 8BDF MOV BX,DI
F000:F933 5F POP DI
F000:F934 E98BFC JMP F5C2
INT 43?
F000:F937 50 PUSH AX
F000:F938 B418 MOV AH,18
F000:F93A EB04 JMP F940
F000:F93C 90 NOP
INT 51?
F000:F93D 50 PUSH AX
F000:F93E B41C MOV AH,1C
F000:F940 53 PUSH BX
F000:F941 52 PUSH DX
F000:F942 06 PUSH ES
F000:F943 E88BEC CALL E5D1
F000:F946 268B5703 MOV DX,ES:[BX+03]
F000:F94A EC IN AL,DX
F000:F94B 26884712 MOV ES:[BX+12],AL
F000:F94F 07 POP ES
F000:F950 5A POP DX
F000:F951 5B POP BX
F000:F952 58 POP AX
F000:F953 CF IRET
; INT 50?
F000:F954 FC CLD
F000:F955 50 PUSH AX
F000:F956 53 PUSH BX
F000:F957 51 PUSH CX
F000:F958 52 PUSH DX
F000:F959 57 PUSH DI
F000:F95A 56 PUSH SI
F000:F95B 1E PUSH DS
F000:F95C 06 PUSH ES
F000:F95D BA0400 MOV DX,0004
F000:F960 EC IN AL,DX
F000:F961 B408 MOV AH,08
F000:F963 E86BEC CALL E5D1
F000:F966 26F6470801 TEST BYTE PTR ES:[BX+08],01
F000:F96B 7513 JNZ F980
F000:F96D 2688470B MOV ES:[BX+0B],AL
F000:F971 2480 AND AL,80
F000:F973 7403 JZ F978
F000:F975 E92303 JMP FC9B
F000:F978 26804F0801 OR BYTE PTR ES:[BX+08],01
F000:F97D E92503 JMP FCA5
F000:F980 268A5708 MOV DL,ES:[BX+08]
F000:F984 2680670879 AND BYTE PTR ES:[BX+08],79
F000:F989 2688470C MOV ES:[BX+0C],AL
F000:F98D A880 TEST AL,80
F000:F98F 7503 JNZ F994
F000:F991 E90703 JMP FC9B
F000:F994 26F6470B01 TEST BYTE PTR ES:[BX+0B],01
F000:F999 740F JZ F9AA
F000:F99B 26F6470820 TEST BYTE PTR ES:[BX+08],20
F000:F9A0 7408 JZ F9AA
F000:F9A2 26806708DF AND BYTE PTR ES:[BX+08],DF
F000:F9A7 E9DE02 JMP FC88
F000:F9AA 247F AND AL,7F
F000:F9AC 2688470D MOV ES:[BX+0D],AL
F000:F9B0 26C57F1C LDS DI,ES:[BX+1C]
....
FCB6 INT 66
FD2D INT 40
....
; INT 6A args AX and BH?
F000:FE86 FB STI
F000:FE87 06 PUSH ES
F000:FE88 53 PUSH BX
F000:FE89 57 PUSH DI
F000:FE8A 56 PUSH SI
F000:FE8B 50 PUSH AX
F000:FE8C 50 PUSH AX
F000:FE8D 8BF3 MOV SI,BX
F000:FE8F B414 MOV AH,14
F000:FE91 E83DE7 CALL E5D1
F000:FE94 58 POP AX
F000:FE95 22E4 AND AH,AH
F000:FE97 740F JZ FEA8
F000:FE99 FECC DEC AH
F000:FE9B 741D JZ FEBA
F000:FE9D FECC DEC AH
F000:FE9F 7428 JZ FEC9
F000:FEA1 FECC DEC AH
F000:FEA3 742E JZ FED3
F000:FEA5 EB3C JMP FEE3 ; Return
F000:FEA7 90 NOP
F000:FEA8 268B7705 MOV SI,ES:[BX+05]
F000:FEAC 268B4F07 MOV CX,ES:[BX+07]
F000:FEB0 268B5709 MOV DX,ES:[BX+09]
F000:FEB4 58 POP AX
F000:FEB5 8BC6 MOV AX,SI
F000:FEB7 EB2B JMP FEE4
F000:FEB9 90 NOP
F000:FEBA 26897705 MOV ES:[BX+05],SI
F000:FEBE 26894F07 MOV ES:[BX+07],CX
F000:FEC2 26895709 MOV ES:[BX+09],DX
F000:FEC6 EB1B JMP FEE3
F000:FEC8 90 NOP
F000:FEC9 1E PUSH DS
F000:FECA E81E00 CALL FEEB
F000:FECD 8935 MOV [DI],SI
F000:FECF 1F POP DS
F000:FED0 EB11 JMP FEE3
F000:FED2 90 NOP
F000:FED3 1E PUSH DS
F000:FED4 E81400 CALL FEEB
F000:FED7 8B05 MOV AX,[DI]
F000:FED9 23C0 AND AX,AX
F000:FEDB 7501 JNZ FEDE
F000:FEDD F9 STC
F000:FEDE 1F POP DS
F000:FEDF 5E POP SI
F000:FEE0 EB02 JMP FEE4
F000:FEE2 90 NOP
F000:FEE3 58 POP AX
F000:FEE4 5E POP SI
F000:FEE5 5F POP DI
F000:FEE6 5B POP BX
F000:FEE7 07 POP ES
F000:FEE8 CA0200 RETF 0002
F000:FEEB 50 PUSH AX
F000:FEEC D0E0 SHL AL,1
F000:FEEE 98 CBW
F000:FEEF 8BF8 MOV DI,AX
F000:FEF1 8CC0 MOV AX,ES
F000:FEF3 8ED8 MOV DS,AX
F000:FEF5 03FB ADD DI,BX
F000:FEF7 83C70C ADD DI,+0C
F000:FEFA 58 POP AX
F000:FEFB C3 RET
; INT 68, argument 0..2 in AH
F000:FEFC 50 PUSH AX
F000:FEFD 53 PUSH BX
F000:FEFE 51 PUSH CX
F000:FEFF 52 PUSH DX
F000:FF00 06 PUSH ES
F000:FF01 22E4 AND AH,AH
F000:FF03 743A JZ FF3F
F000:FF05 FECC DEC AH
F000:FF07 740A JZ FF13
F000:FF09 FECC DEC AH
F000:FF0B 7423 JZ FF30
F000:FF0D 07 POP ES
F000:FF0E 5A POP DX
F000:FF0F 59 POP CX
F000:FF10 5B POP BX
F000:FF11 58 POP AX
F000:FF12 CF IRET
; INT 68 AH = 1
F000:FF13 50 PUSH AX
F000:FF14 B414 MOV AH,14
F000:FF16 E8B8E6 CALL E5D1 ; Get workspace ES:BX = 0086:0068
F000:FF19 26F6470B01 TEST BYTE PTR ES:[BX+0B],01
F000:FF1E 5B POP BX
F000:FF1F 7506 JNZ FF27
F000:FF21 B00A MOV AL,0A
F000:FF23 BA0300 MOV DX,0003
F000:FF26 EE OUT DX,AL
F000:FF27 B700 MOV BH,00
F000:FF29 B80202 MOV AX,0202
F000:FF2C CD6A INT 6A
F000:FF2E EBDD JMP FF0D ; return from int
; INT 68 AH = 2
F000:FF30 BA0300 MOV DX,0003
F000:FF33 B00B MOV AL,0B
F000:FF35 EE OUT DX,AL
F000:FF36 33DB XOR BX,BX
F000:FF38 B80202 MOV AX,0202
F000:FF3B CD6A INT 6A
F000:FF3D EBCE JMP FF0D ; return from int
; INT 68 AH = 0
F000:FF3F B414 MOV AH,14
F000:FF41 E88DE6 CALL E5D1 ; Get workspace ES:BX = 0086:0068
F000:FF44 B000 MOV AL,00
F000:FF46 23C9 AND CX,CX
F000:FF48 7502 JNZ FF4C
F000:FF4A FEC0 INC AL
F000:FF4C 2688470B MOV ES:[BX+0B],AL
F000:FF50 23C9 AND CX,CX
F000:FF52 74B9 JZ FF0D ; return from int
F000:FF54 B076 MOV AL,76
F000:FF56 BA0F00 MOV DX,000F
F000:FF59 EE OUT DX,AL
F000:FF5A 8BC1 MOV AX,CX
F000:FF5C B20D MOV DL,0D
F000:FF5E EE OUT DX,AL
F000:FF5F 8AC4 MOV AL,AH
F000:FF61 EE OUT DX,AL
F000:FF62 EBA9 JMP FF0D ; return from int
F000:FFF0 FA CLI
F000:FFF1 FC CLD
F000:FFF2 B800E0 MOV AX,E000
F000:FFF5 8ED8 MOV DS,AX
F000:FFF7 BE0500 MOV SI,0005
F000:FFFA EA28E000F0 JMP F000:E028
F000:FFFF FD STD
Patch:
F000:E285 B400 MOV AH,00 F000:E287 CD63 INT 63 F000:E289 7259 JB E2E4 ; "Drive not ready" Changed to: F000:E285 E9E81C JMP FF70 F000:E288 90 NOP F000:E289 90 NOP F000:E28A 90 NOP F000:FF70 B102 MOV CL,02 F000:FF72 B400 MOV AH,00 F000:FF74 51 PUSH CX F000:FF75 CD63 INT 63 F000:FF77 59 POP CX F000:FF78 7307 JAE FF81 F000:FF7A FEC9 DEC CL ; Try three times F000:FF7C 75F4 JNZ FF72 F000:FF7E E963E3 JMP E2E4 ; "Drive not ready" F000:FF81 E907E3 JMP E28B