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PC Bus Connector
A Side
I/O PIN
Signal Name
A1
IOCHK*
A2
SD7
A3
SD6
A4
SD5
A5
SD4
A6
SD3
A7
SD2
A8
SD1
A9
SD0
A10
IOCHRDY
A11
AEN
A12
SA19
A13
SA18
A14
SA17
A15
SA16
A16
SA15
A17
SA14
A18
SA13
A19
SA12
A20
SA11
A21
SA10
A22
SA9
A23
SA8
A24
SA7
A25
SA6
A26
SA5
A27
SA4
A28
SA3
A29
SA2
A30
SA1
A31
SA0
* Active low signal
Connector Pinouts
B Side
I/O
I/O PIN
I
B1
I/O
B2
I/O
B3
I/O
B4
I/O
B5
I/O
B6
I/O
B7
I/O
B8
I/O
B9
I
B10
O
B11
I/O
B12
I/O
B13
I/O
B14
I/O
B15
I/O
B16
I/O
B17
I/O
B18
I/O
B19
I/O
B20
I/O
B21
I/O
B22
I/O
B23
I/O
B24
I/O
B25
I/O
B26
I/O
B27
I/O
B28
I/O
B29
I/O
B30
I/O
B31
D-18
Signal Name
I/O
GND
-
RESET DRV
O
VCC (+5V)
-
IRQ9
I
-5V
-
DRQ2
I
-12V
-
OWS*
I
+12V
-
GND
-
SMEMW*
O
SMEMR*
O
IOW*
I/O
IOR*
I/O
DACK3*
O
DRQ3
I
DACK1*
O
DRQ1
I
REFRESH*
I/O
SYSCLK
O
IRQ7
I
IRQ6
I
IRQ5
I
IRQ4
I
IRQ3
I
DACK2*
O
T/C
O
BALE
O
VCC (+5V)
-
OSC
O
GND
-
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