Category: disk I/O enhancements

INT 78 - TARGA.DEV - SET SCSI DEVICE NUMBER

	AH = 04h
	AL = SCSI device number
Return: CF set on error
	AL = error code (see #03786)
Note:	if this routine is not called, the device number used is the driver's
	  default (usually 0)
SeeAlso: AH=02h,AH=05h