0:43Eh                   Diskette Drive Recalibrate Status

Length: 1 byte

This byte indicates whether or not a diskette drive needs to be

recalibrated.

                    Diskette Drive Recalibrate Status

7 6 5 4 3 2 1 0

x . . . . . . .      Interrupt Flag

. x . . . . . .      Reserved

. . x . . . . .      Reserved

. . . x . . . .      Reserved

. . . . 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

a recalibration.

Prev:     0:41Eh Keyboard Buffer

See also: INT 13h, 00h

Next:     0:43Fh Diskette Drive Motor Status