HP 3336A - Page 62

Appendix A
To SERIAL POLL the -hp- 3336:
First:
BUS MANAGEMENT LINES
ATN
IFC
SRQ
REN
EOI
ee
on
Data
lines
T
F
-%®
xX xX
?
CAN
D
5
eee listen address
-hp- 3336 talk address
universal Serial Poll Enable (030g)
universal unlisten (077g)
Second:
BUS MANAGEMENT LINES
ATN
IFC
SRQ
REN
EOI
send
on
Data
lines
F
F
x
x
Xx
Status
Byte
Third:
BUS MANAGEMENT LINES
ATN
IFC
SRQ
REN.
EOI
2.
Data
lines
T
F
Xx
Xx
X
EM
— universal Serial Poll Disable
(031g)
Figure
3-A-8.
Serial
Poll
(obtaining
the
Status
Byte).
A-6