on return:
AH = disk operation status (see INT 13,STATUS)
CF = 0 if successful
= 1 if error
- clears reset flag in controller and pulls heads to track 0
- setting the controller reset flag causes the disk to recalibrate
on the next disk operation
- if bit 7 is set, the diskette drive indicated by the lower 7 bits
will reset then the hard disk will follow; return code in AH is
for the drive requested
- if bit 7 is set, the diskette drive indicated by the lower 7 bits
will reset then the hard disk will follow; return code in AH is
for the drive requested