Online HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens
Device Status Word
The device status word is set to zero on entry and is set by
the driver interrupt routine on return.
│15│14-10│9│8│7-0│ STATUS word
│ │ │ │ └──── Error return code (if bit 15=1)
│ │ │ └────── Done bit, function completed
│ │ └─────── Busy bit
│ └────────── Reserved
└───────────── Error flag bits 0-7 have error code
Error return codes
00 Write protect violation 01 Unknown unit
02 Device not ready 03 Unknown command
04 CRC error 05 Bad drive request structure length
06 Seek error 07 Unknown media
08 Sector not found 09 Printer out of paper
0A Write fault 0B Read fault
0C General failure 0D Reserved
0E Reserved 0F Invalid disk change
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