RELATIVE SEEK
DATA BUS
PHASE
R/W D7 D6 D5 D4 D3
D2
D1
D0
REMARKS
Command
W
W
W
1
0
DIR
0
0
0
0
0
1
0
1
1
1
HDS DS1 DS0
------- RCN -------
DUMPREG
DATA BUS
D4 D3 D2
PHASE
R/W
D7
D6
D5
D1
D0
REMARKS
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 -------
D2 D1 D0
EIS EFIFO POLL
-------- PRETRK --------
--- HUT ---
ND
LOCK
0
0
D3
GAP
WGATE
-- FIFOTHR --
50