HP Vectra

Table 4.1
Keyboard Connector Pin Assignments
Pin Assignment
1
+ 12 Vdc
2
Serial In
3 Serial Out
4 Ground
Keyboard Interface
,.------------ A20 GATE ENABLES
PROTECTED MODE
ADDRESS LINE
HP8041
r--- ........ 69H
P21
____ ----I TEST 0
_PA_2 ----I AO COMMAND
DO-D7
+5
KBINH
u-- ......... --t P27
SECURITY
LOCK
HPINT
CERB/NT
OBFINT
-CERBNMI
6AH
tNT
NMI
P20
~---------RC
TEST1 ..... __ ......
-INT HP
OBF INT
AP 60 Hz
AP
00-07
68H
64H
60H
SCAN
CODE--
HP-HIL CONTROLLER
~ COMMANDS '--- __ ...... __ ...
00-07
__ ---' HPHIL
Figure 13
58 Keyboard Interface