HP Vectra - Page 228

10
_-+---------___+_ ----t.----_
~RQEN __ ._
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
- ERROR
-STROBE
- AUTO FD
-INIT
- SLCTIN
GND
GND
GND
GND
GND
GND
GND
GND
+PE
+SLCT
-ACK
+BUSY
DTR
RTS
TX DATA
GND
CTS
RI
RX DATA
DSR
CD
MC1488
UART16450
U13
+~------
14·
....... ----~-~£'uZ S _
ENABLE SERIAL
-_._-----------~-
I-'-~-
j r ~.8~~MHz
74ALS32?
PARALLEL I
~!
._:=J
AO
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~
A1
~1
,~1
A2
~A2/
lOW
~
lOR
~-
A7
~
A9
~
A6
~-
A5
A4
A3
A8
AEN
DO
01
02
03
04
~'
05
~
06
~,
07
~'
IRQ4 ~._-
IRQ3
~ ____ u
IRQ5
IRQ7
RESET
+ 12V
---*~-
5V
5V
-.,---
(38
GND
¢ 1DLJF
GND
20V
GND
-12V
kJ CR1
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r
1 OF 1
718/85 REV A
SERIAL/PARALLEL
24540-60001