HP 13255 Technical Information page 12

1315C;
General Purpose Asynchronous Dat~ Comm ~odule
13255-9108 Q /I0
Rev AHG-Ol-76
Tabl~
6.1 Module Rus Pin Assianments
================================================================================
Function
pertorme"':
Poll Btt:
Read
Ffrmwar~
Control Word
(Fe Switches)
Not APplicable
Module Address:
(~DOR 11,10,9,4)
=
(Atl,A10,A9,A41
Switch
Selectable (OOOl)=Data Comm
(OIOl)=Printer
FUnction Specifier:
ADOR5
=
0
ADDR6
=
1
nata Bus Bft Interpretation:
P.7 Swttch FC1
o
=
Switch
Closed
1
=
Switch Open
B6 5wit~h Frb
o
=
Switch
Closed
t
=
SwitCh Open
B5 switCh FrS
o
= Switch Closed
1
=
Switch Open
84 SwitCh Fr4
o
=
Switch C~osed
t
=
Swltcn
Open
R3 SwitCh FC3
o
=
Sw~tCh
Closed
1
=
Switch
Open
R2
Swltch . . FC2
o
=
Switch C~ose~
t
=
SwitCh Open
B1 switCh Fel
o
=
SwitCh
C1.osed
1
=
SwitCh open
BO
Sw
1
tCh_. FCO
o
=
Switch Closed
1
=
SwitCh Open
Bus
I
Value Slqnttl
1-------
-
.... ~---------
-------
--
...
---~-----
I
X
ADOR 15
,
X
ADDR 14
,
X
ADOR
13
X
ADOR
l'
Atl ADDR
11
AtO ADOR
10
Aq
ADDR
q
X
ADDF
8
X
ADOR
7
1 flDOR 6
0
ADDR
5
A4
ADOR 4
X
ADOR
3
X
ADDR
2
X
ADDR
1
X
ADOR
0
-
...
---,..
...
~---
...
~------
---.-,---
...----_-._------
87 RUS 7
R6
RUS
6
B5
BUS
5
B4
PUS
4
B3
RUS
3
8"
BUS
,
B1
BUS
t
flO
RU5
0
-----~-~-------~----
-----~---~-~~----~--
I=Loq~cal
l=Bus Low
O=Logical O=Bus High
X=Don't Care
------~~----~-----~--
------------~-----~~-
----------------~--------~--~-----------~-------~-~-------~-~-------------------
--------------------------
...
---~-----------------------~-----------------~-----~-