HP 9800 SERIES - 9845 B;C Mainframe Diagrams; Processor Section

A-50 HP 9895A Disc Memory Command Set
HP-IB Sequence:
ATN
r01~DDRSI
Primary
Status:
Parallel Poll:
ATN
I Pll01100 I
Secondary
I Interleave I
Where:
P
P
D
Format Request
11000
1
Opcode
EOI ATN
P
UUUUI
Unit
I
~ I POllll11 I
Data Byte I Unlisten
ADDRS - 9895A HP-IB address
F - Override old format bit
TTTTTTT - Wanted format type
2 - HP
8 - IBM
Interleave - 1 to 29 for HP
- 1 to 25 for IBM
No errors.
Sl -0
Stat 2 - Unchanged
DSJ -0
Unsuccessful.
Sl - Error
Stat 2 - Bits A, F and C set, if appropriate.
DSJ -1
IFTTTTTTT I
Type
The parallel poll response is re-enabled after the operation
is completed, normally
or abnormally.