71 lines
1.9 KiB
NASM
71 lines
1.9 KiB
NASM
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; Copyright (c) Mix Software 1988
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;
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; -------------------------------------------------------
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; absread(drive, nsects, sectno, buffer)
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; -------------------------------------------------------
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; int drive; /* disk drive number (a=0, b=1, etc) */
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; int nsects; /* number of sectors */
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; int sectno; /* logical sector number */
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; char *buffer; /* buffer for data */
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;
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; returns zero if successful, -1 on error
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; -------------------------------------------------------
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;
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IDT absread
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DEF absread
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DREF errno
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;
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absread PUSH BP
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MOV BP,SP
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MOV AX,[BP][%PARM1]
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MOV CX,[BP][%PARM2]
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MOV DX,[BP][%PARM3]
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MOV BX,[BP][%PARM4]
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INT >25
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JB ERROR
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POPF
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XOR AX,AX
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POP BP
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RETSEG
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ERROR POPF
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MOV [errno],AX
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MOV AX,-1
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POP BP
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RETSEG
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END
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;
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; -------------------------------------------------------
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; abswrite(drive, nsects, sectno, buffer)
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; -------------------------------------------------------
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; int drive; /* disk drive number (a=0, b=1, etc) */
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; int nsects; /* number of sectors */
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; int sectno; /* logical sector number */
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; char *buffer; /* buffer for data */
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;
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; returns zero if successful, -1 on error
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; -------------------------------------------------------
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;
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IDT abswrite
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DEF abswrite
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DREF errno
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;
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abswrite PUSH BP
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MOV BP,SP
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MOV AX,[BP][%PARM1]
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MOV CX,[BP][%PARM2]
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MOV DX,[BP][%PARM3]
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MOV BX,[BP][%PARM4]
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INT >26
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JB ERROR
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POPF
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XOR AX,AX
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POP BP
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RETSEG
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ERROR POPF
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MOV [errno],AX
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MOV AX,-1
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POP BP
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RETSEG
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END
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