0:43Eh Diskette Drive Recalibrate Status
This byte indicates whether or not a diskette drive needs to be
Diskette Drive Recalibrate Status
x . . . . . . . Interrupt Flag
. . . . x . . . Recalibrate Drive 3
. . . . . x . . Recalibrate Drive 2
. . . . . . x . Recalibrate Drive 1
. . . . . . . x Recalibrate Drive 0
Note that if bits 0 through 3 are 0, the drive needs calibration.
Recalibration will retract the head to track 0.
If a drive needs recalibration and a seek is requested, then
recalibration will be performed before the seek.
INT 13h, Service 00h, will set bits 0 through 3 to 0, thereby forcing