A-12 Connector Pin Assignments
ISA/PCI-BUS BACKBOARD CONNECTOR PIN ASSIGNMENTS
Table Appendix A-13 provides the pin assignments for the ISA/PCI-bus backboard
connector on the system board.
Table Appendix A-13 ISA/PCI-Bus Backboard Connector Pin Assignments
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
A1
IOCHCK
B1
GND
E1
GND
F1
GND
A2
SD07
B2
RSET DRV E2
GND
F2
GND
A3
SD06
B3
+5V
E3
PCIINT1
F3
PCIINT3
A4
SD05
B4
IRO09
E4
PCIINT2
F4
PCIINT4
A5
SD04
B5
5V
E5
+5V
F5
+5V
A6
SD03
B6
DRQ2
E6
Key
F6
Key
A7
SD02
B7
12V
E7
+5V
F7
+5V
A8
SD01
B8
0WS
E8
PCIRST
F8
PCLKF
A9
SD00
B9
+12V
E9
GNTO
F9
GND
A10
IOCHRDY
B10
GND
E10
REQ0
F10
GNT1
A11
AEN
B11
SMEMWR
E11
GND
F11
GND
A12
SA19
B12
SMEMRD
E12
PCLKE
F12
REQ1
A13
SA18
B13
IORD
E13
GND
F13
AD31
A14
SA17
B14
IOWR
E14
AD30
F14
AD29
A15
SA16
B15
DACK3
E15
+3.3V
F15
+3.3V
A16
SA15
B16
DRQ3
E16
Key
F16
Key
A17
SA14
B17
DACK1
E17
+3.3V
F17
+3.3V
A18
SA13
B18
DRQ1
E18
AD28
F18
AD27
A19
SA12
B19
REFRESH
E19
AD26
F19
AD25
A20
SA11
B20
BCLK
E20
AD24
F20
CBE3
A21
SA10
B21
IRQ07
E21
AD22
F21
AD23
A22
SA09
B22
IRQ06
E22
AD20
F22
AD21
A23
SA08
B23
IRQ05
E23
AD18
F23
AD19
A24
SA07
B24
IRQ04
E24
+3.3V
F24
+3.3v
A25
SA06
B25
IRQ03
E25
Key
F25
Key
A26
SA05
B26
DACK2
E26
+3.3V
F26
+3.3V
A27
SA04
B27
T/C
E27
AD16
F27
AD17