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AX = 4403h BX = file handle referencing character device for CD-ROM driver CX = number of bytes to write DS:DX -> control block (see #01524)
Return:
CF clear if successful AX = number of bytes actually written CF set on error AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
Notes: Some device drivers support several subunits (that is more than one drive) but it is not possible to distinguish between them with this function; use INT 2F/AX=1510h or INT 2F/AX=0802h instead. Under Windows95, the "mscd$$$$" device cannot be opened so you cannot
obtain the handle required by this function:
Use INT 2F/AX=1510h or INT 2F/AX=0802h instead
See Also: AX=4402h"CD-ROM" - INT 2F/AX=0802h - INT 2F/AX=1510h
Format of CR-ROM control block: Offset Size Description (Table 01524) 00h BYTE function code 00h eject disk 01h lock/unlock door 02h reset drive 03h control audio channel 04h write device control string 05h close tray ---functions 00h,02h,05h--- no further fields ---function 01h--- 01h BYTE lock function 00h unlock door 01h lock door ---function 03h--- 01h BYTE input channel (0-3) for output channel 0 02h BYTE volume for output channel 0 03h BYTE input channel (0-3) for output channel 1 04h BYTE volume for output channel 1 05h BYTE input channel (0-3) for output channel 2 06h BYTE volume for output channel 2 07h BYTE input channel (0-3) for output channel 3 08h BYTE volume for output channel 3
Note: Output channels 0 and 1 are left and right, 2 and 3 are left prime and right prime; a volume of 00h is off ---function 04h--- 01h N BYTEs bytes to send directly to the CD-ROM drive without interpretation
Category: Disk I/O Enhancements - Int 21h - C
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