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Copyright 1991 David Jurgens |
INT 21,44,7 / IOCTL,7 - Get Output Status
AH = 44h
AL = 07
BX = handle
on return
CF = 0 if successful
= 1 if error
AX = error code if CF set (see DOS ERROR CODES)
AL = 00 if ready (files), or not ready (char devices)
= FF ready (files or char device)
- indicates if a device or file is ready for output
- files always return ready, character devices don't
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| Esc or Alt-X to exit |
int 21,44,7 |
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