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86-DOS-0.11/SYS.A86
T
Broken Pipe f3612b9081 Renamed .ASM files to .A86
Original source code used .A86 but I named them .ASM for GitHub to provide syntax highlighting. Now I've decided that it's better to keep the names original.
2025-10-03 13:58:15 +10:00

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FCB EQU 5CH
ORG 100H
PUT 100H
JMP START
SECS: DW 52 ;Patch for different configs
START:
MOV AL,[FCB]
OR AL,AL
JZ BADDRV
DEC AL
JZ BADDRV
MOV [FCB],AL
MOV CX,[SECS]
MOV DX,0
MOV BX,END
MOV AL,0
INT 37
JC RDERR
POPF
MOV CX,[SECS]
MOV DX,0
MOV BX,END
MOV AL,[FCB]
MOV AH,1
INT 38
JC WRERR
MOV DX,SYSOK
JP QUIT
RDERR:
MOV DX,ERREAD
QUIT:
MOV AH,9
INT 33
INT 32
WRERR:
MOV DX,ERWRIT
JP QUIT
BADDRV:
MOV DX,DRVBAD
JP QUIT
SYSOK: DB "System transfered$"
ERREAD: DB "Disk read error$"
ERWRIT: DB "Disk write error$"
DRVBAD: DB "Bad drive specification"
END: