RELATIVE SEEK
DATA BUS
PHASE
R/W
REMARKS
D7 D6 D5 D4 D3
D2
D1
D0
Command
W
W
W
1
0
DIR
0
0
0
0
0
1
0
1
1
1
HDS DS1 DS0
-------RCN -------
DUMPREG
DATA BUS
PHASE
R/W
REMARKS
D7
D6
D5
D4
D3 D2
D1
D0
Command
W
0
0
0
0
1
1
1
0
*Note:
Registers
placed in
FIFO
Execution
Result
R
R
R
R
R
R
R
R
R
R
------PCN-Drive 0 -------
------PCN-Drive 1 -------
------PCN-Drive 2 -------
------PCN-Drive 3 -------
----SRT ----
-------HLT -------
-------SC/EOT -------
D3 D2 D1 D0
EIS EFIFO POLL
---HUT ---
ND
LOCK
0
0
GAP WGATE
--FIFOTHR --
--------PRETRK --------
52