HP 13255 Technical Information
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13255
General
Purpose
Asynchronous
Data
Comm
Module
13255-91089/09
Rev AUG-Ot-76
Table
6.0
Module Rus
Pin
Assiqnments
=====::====================================:=====================================
Function
Performed:
Output
Data
Character
for
Transmission
Poll
Bit:
Not
Applicable
Module
Address:
(ADOR
11,tO,9,41
=
(A11,AtO,A9,A4)
Switch
Selectable
(OOOt)=Data
Comm
(Ot01)=Printer
Function
SDecifier:
AnDR5
= 1
ADDR6
= 1
Data
BUS
Bit
Interpretation:
R7
Data
Output
Bft
7
-
86
Data
Output
Bit
6
Data
Output
Bit
5
A4~
Data
Output
Bit
4
Data
nutput
Hit
3
B
'-'
4.
DAta
nutput
Bit
2
B1.
Data
Output
Bit
1
RO
Data
Output
Bit
0
I
Bus
,
Value
Siqnal
-------
--
..
---.~
..
----
--------
....
-----~--
...
-
X
ADOR
15
X
ADOR
14
X
AOOR
13
X
ADT)R
12
All
AOOR
1 t
AIO
ADDR
10
A9
ADDR
9
X
ADDR
8
X
ADOR
7
1
ADDR
6
t
ADOR
5
.A4
ADDR
4
X
AOOR
3
X
ADOR
2
X
ADOR
t
X
ADDR
0
_
....
_---
-------------
--
.....
---
----
..
--~--
......
--
67
BUS
7
86
RUS
6
85
BUS
5
84
AUS
4
A3
AUS
3
82
AUS
2
8t
PUS
t
80
BUS
0
--~-~----~----------
--~-----------------
l=Logical
l=Bus
Low
O=Loqical
O=Bus
High
X=Don't
Care
----~------
..
---------
----~-~-------------~
=====::==:=========:=============================================================