167 lines
4.7 KiB
NASM
167 lines
4.7 KiB
NASM
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; Copyright (c) Mix Software 1988
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;
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; -------------------------------------------------------
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; bioscom(cmd, byte, port)
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; -------------------------------------------------------
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; int cmd; /* action to take 0..3 */
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; char byte; /* character to send */
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; int port; /* port number (0 = COM1 etc.) */
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;
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; return: upper 8 bits are port status
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; lower 8 bits are character or value
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; -------------------------------------------------------
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;
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IDT bioscom
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DEF bioscom
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;
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bioscom PUSH BP
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MOV BP,SP
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MOV AX,[BP][%PARM1]
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MOV AH,AL
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MOV CX,[BP][%PARM2]
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MOV AL,CL
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MOV DX,[BP][%PARM3]
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INT >14
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POP BP
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RETFAR
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END
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;
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; -------------------------------------------------------
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; biosdisk(cmd, drive, head, track, sector, nsects, buffer)
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; -------------------------------------------------------
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; int cmd; /* action to take 0..5 */
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; int drive; /* disk drive number 0.. */
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; int head; /* head number */
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; int track; /* physical track number */
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; int sector; /* starting sector */
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; int nsects; /* number of sectors (1..9) */
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; char *buffer; /* address of buffer */
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;
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; return: status word
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; -------------------------------------------------------
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;
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IDT biosdisk
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DEF biosdisk
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;
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biosdisk PUSH BP
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MOV BP,SP
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MOV AH,[BP][%PARM1]
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MOV AL,[BP][%PARM4+4] ; # of sectors
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MOV BX,[BP][%PARM4+6] ; buffer
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MOV CX,DS
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MOV ES,CX
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MOV CH,[BP][%PARM4] ; track number
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MOV CL,[BP][%PARM4+2] ; sector number
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MOV DH,[BP][%PARM3] ; head number
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MOV DL,[BP][%PARM2] ; drive number
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INT >13
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XOR AH,AH
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XCHG AL,AH
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POP BP
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RETFAR
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END
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;
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; -------------------------------------------------------
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; biosequip()
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; -------------------------------------------------------
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; return: word describing the equipment connected
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; -------------------------------------------------------
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;
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IDT biosequi
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IF LONGNAME
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LDEF biosequip
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ENDIF
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IF SHORTNAM
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DEF biosequi
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ENDIF
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;
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biosequi INT >11
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RETFAR
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END
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;
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; -------------------------------------------------------
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; bioskey(cmd)
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; -------------------------------------------------------
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; int cmd; /* action to take 0..2 */
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; return: key value or status
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; -------------------------------------------------------
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;
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IDT bioskey
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DEF bioskey
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;
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bioskey MOV BX,SP
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MOV AH,[BX][%PARM1-2]
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INT >16
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RETFAR
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END
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;
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; -------------------------------------------------------
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; biosmemory()
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; -------------------------------------------------------
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; return: number of 1k blocks of physical memory
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; -------------------------------------------------------
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;
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IDT biosmemo
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IF LONGNAME
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LDEF biosmemory
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ENDIF
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IF SHORTNAM
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DEF biosmemo
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ENDIF
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;
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biosmemo INT >12
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RETFAR
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END
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;
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; -------------------------------------------------------
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; long biosprint(cmd, byte, port)
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; -------------------------------------------------------
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; int cmd; /* action to take 0..5 */
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; int byte; /* value of character */
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; int port; /* printer number */
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; -------------------------------------------------------
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;
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IDT biosprin
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IF LONGNAME
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LDEF biosprint
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ENDIF
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IF SHORTNAM
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DEF biosprin
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ENDIF
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;
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biosprin PUSH BP
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MOV BP,SP
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MOV AH,[BP][%PARM1]
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MOV AL,[BP][%PARM2]
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MOV DX,[BP][%PARM3]
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INT >17
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MOV AL,AH
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XOR AH,AH
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POP BP
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RETFAR
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END
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;
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; -------------------------------------------------------
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; long biostime(cmd, newtime)
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; -------------------------------------------------------
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; int cmd; /* action to take 0..5 */
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; int newtime; /* new value of time (if cmd=1)
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; return: current timer count
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; -------------------------------------------------------
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;
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IDT biostime
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DEF biostime
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;
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biostime PUSH BP
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MOV BP,SP
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MOV AH,[BP][%PARM1]
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MOV DX,[BP][%PARM2]
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MOV CX,[BP][%PARM2+2]
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INT >1A
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MOV AX,DX
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MOV DX,CX
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POP BP
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RETFAR
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END
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