Isa Connectors; Isa Bus Pin Assignments - NEC POWERMATE PROFESSIONAL 9000 Service Manual

ISA Connectors

Table A-15 lists connector pin assignments for the ISA connectors on the system board.
Pin Signal
B1 GND
B2 RSTDRV
B3 Vcc
B4 IRQ9
B5 -5 V
B6 DRQ2
B7 -12 V
B8 0WS-
B9 +12 V
B10 GND
B11 SMEMW-
B12 SMEMR-
B13 IOW-
B14 IOR-
B15 DACK3-
B16 DRQ3
B17 DACK1-
B18 DRQ1
B19 REFRESH-
B20 SYSCLK
B21 IRQ7
B22 IRQ6
B23 IRQ5
B24 IRQ4
B25 IRQ3
Table A-15 ISA Bus Pin Assignments
Pin Signal
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
Connector Pin Assignments
Pin Signal
B26 DACK2-
B27 TC
B28 BALE
B29 Vcc
B30 OSC
B31 GND
KEY
D1 MEMCS16-
D2 IOCS16-
D3 IRQ10
D4 IRQ11
D5 IRQ12
D6 IRQ15
D7 IRQ14
D8 DACK0-
D9 DRQ0
D10 DACK5-
D11 DRQ5
D12 DACK6-
D13 DRQ6
D14 DACK7-
D15 DRQ7
D16 Vcc
D17 Master-
D18 GND
A-13
Pin Signal
A26 SA5
A27 SA4
A28 SA3
A29 SA2
A30 SA1
A31 SA0
KEY
C1 SBHE-
C2 LA23
C3 LA22
C4 LA21
C5 LA20
C6 LA19
C7 LA18
C8 LA17
C9 MEMR-
C10 MEMW-
C11 SD8
C12 SD9
C13 SD10
C14 SD11
C15 SD12
C16 SD13
C17 SD14
C18 SD15