RECALIBRATE
DATA BUS
PHASE
R/W
REMARKS
D7 D6 D5 D4 D3 D2
D1
D0
Command
W
W
0
0
0
0
0
0
0
0
0
0
1
0
1
1
Command Codes
DS1 DS0
Execution
Head retracted to Track 0
Interrupt.
SENSE INTERRUPT STATUS
DATA BUS
PHASE
R/W
REMARKS
D7 D6 D5 D4 D3 D2 D1 D0
Command
Result
W
R
0
0
0
0
1
0
0
0
Command Codes
─────── ST0 ───────
Status information at the end
of each seek operation.
R
─────── PCN ───────
SPECIFY
DATA BUS
PHASE
R/W
REMARKS
D7 D6 D5 D4 D3 D2 D1 D0
Command
W
W
W
0
0
0
0
0
0
1
1
Command Codes
─── SRT ───
─── HUT ───
────── HLT ──────
ND
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