Int 21 Fn 4403  - Brian Antoine Seagate St-01 Scsi.sys - Ioctl - Execute   [d]

   AX = 4403h
   BX = handle for device "SCSITAPE"
   CX = number of bytes to write
   DS:DX -> SCSITAPE control block (see below)

Return: CF clear if successful
       AX = number of bytes actually written
   CF set on error
       AX = error code (01h,05h,06h,0Dh) (see AH=59h)

See Also: AX=4405h"ST-01",INT 78/AH=10h

Format of SCSITAPE control block:
Offset Size    Description
 00h   WORD    command type
       'F' Format (argument 1 = interleave, argument 2 = format type)
       'E' Erase
       'R' Rewind
       'L' Load
       'N' No Load
       'S' Space (argument 1 = count, argument 2 = type)
       'M' File Mark (argument 1 = count)
       'A' Reassign
 02h   WORD    argument 1
 04h   WORD    argument 2
 06h   WORD    segment of command buffer
 08h   WORD    offset of command buffer
 0Ah   WORD    length of command buffer