HP 13255 Technical Information page 16

13255
Genera) Purpose Asvnchronous Data Comm MOdule
13255-91089/14
Pev AUG-Ot-76
Table 6.5 Module Pus Pin Assiqnments
================================================================================
Function
performed:
Poll Bit:
TnDut instruction to Set/Reset Data
Terminal Readv (CD) and
Set/~eset
External Control siqnal
(X~CL)
Not Applicable
Module Address: (AOOR
11,10,9,4)
= (Atl,A10,A9,A4)
Switch Selectable
(0001)
= Data Comm
(0101)
= Printer
Function Speclfleor:
ADDP5 =
1
ADOR6 =
1
A2
=
0,
XECL = L<?w
A2 = 1 ,
XErL = Hiqh
A3 =
0,
rD
On.
1\3 =
1 ,
CO Off
nata BUS Bit Interpretation: Not Apolicable
Bus
Value Signal
_
............
_-
--
.....
-
..
_-_
...
---
----.-.--
------------
X
ADOR
15
X ADOR
14
X ADDR
13
X
ADOR
12
Atl ADDR
11
A10 ADDR
10
A9
ADDR
9
X
AOOR
R
X
ADOR
7
t
ADOR
6
1
AOOR
5
A4 ADOR 4
AJ
ADnR
3
A2
ADOR ?
x
AOOR
1
)(
ADf)R
0
------- ------
...
-_
...
--
-------- ------------
B7 RUS 7
86
BUS
6
85 BUS
C;
B4
BU~ 4
B3
BUS
3
B2 AUS
?
81
~US
1
80
BUS
0
--------------------
--------~--~~---~---
l=LoQical l=Bus Low
O=Loqlcal O=BlJS High
X=Don·t Care
~-~---~--~---~--~----
---~--~--------------
~-------------------~-------~-~----~~---~--~~~-------~--------~----~---~--~----­
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