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Appendix A Expansion Bus
Page: A-2
PSB-1688LF USER
′
S MANUAL
ISA BUS PIN ASSIGNMENT
There are two edge connector (called “gold fingers“) on this CPU Card, on the
right hand is the connector of ISA Bus, followed up by PCI BUS connector. The
ISA-bus connector is divided into two sets: one consists of 62 pins; the other
consists of 36 pins.
The pin assignments are as follows :
B A D C
PIN ASSIGNMENT PIN ASSIGNMENT PIN ASSIGNMENT PIN ASSIGNMENT
B1 GND A1 -I/O CH CHK D1 -MEMCS16 C1 SBHE
B2 RESET A2 SD07 D2 -I/OCS16 C2 LA23
B3 +5V A3 SD06 D3 IRQ10 C3 LA22
B4 IRQ9 A4 SD05 D4 IRQ11 C4 LA21
B5 NC A5 SD04 D5 IRQ12 C5 LA20
B6 NC A6 SD03 D6 IRQ15 C6 LA19
B7 -12V A7 SD02 D7 IRQ14 C7 LA18
B8 OWS A8 SD01 D8 -DACK0 C8 LA17
B9 +12V A9 SD00 D9 DRQ0 C9 -MEMR
B10 GND A10 -I/O CH RDY D10 -DACK5 C10 -MEMW
B11 -SMEMW A11 AEN D11 DRQ5 C11 SD08
B12 -SMEMR A12 SA19 D12 -DACK6 C12 SD09
B13 -IOW A13 SA18 D13 DRQ6 C13 SD10
B14 -IOR A14 SA17 D14 -DACK7 C14 SD11
B15 -DACK3 A15 SA16 D15 DRQ7 C15 SD12
B16 -DRQ3 A16 SA15 D16 +5V C16 SD13
B17 -DACK1 A17 SA14 D17 -MASTER C17 SD14
B18 -DRQ1 A18 SA13 D18 GND C18 SD15
B19 -REFRESH A19 SA12
B20 BCLK A20 SA11
B21 IRQ7 A21 SA10
B22 NC A22 SA09
B23 IRQ5 A23 SA08
B24 IRQ4 A24 SA07
B25 IRQ3 A25 SA06
B26 NC A26 SA05
B27 T/C A27 SA04
B28 BALE A28 SA03
B29 +5V A29 SA02
B30 OSC A30 SA01
B31 GND A31 SA00
D1
C1C18
D18
A
31
B31
A1
B1
COMPONENT SIDE