Isa Expansion Bus Connector Pin Assignments - NEC POWERMATE VE - SERVICE MANUAL 08-1996 Service Manual

A-12 Connector Pin Assignments

ISA EXPANSION BUS CONNECTOR PIN ASSIGNMENTS

The expansion slots signals, voltages, and grounds are supplied through the bus connectors.
There are no active components on the ISA/PCI-bus backboard. Table A-13 provides the
pin assignments for the ISA expansion slots.
Table A-13 ISA Expansion Slot Pin Assignments
Pin Direction
A1 Input
A2 Input/Output
A3 Input/Output
A4 Input/Output
A5 Input/Output
A6 Input/Output
A7 Input/Output
A8 Input/Output
A9 Input/Output
A10 Input
A11 Output
A12 Input/Output
A13 Input/Output
A14 Input/Output
A15 Input/Output
A16 Input/Output
A17 Input/Output
A18 Input/Output
A19 Input/Output
A20 Input/Output
A21 Input/Output
A22 Input/Output
A23 Input/Output
A24 Input/Output
A25 Input/Output
A26 Input/Output
Signal Pin
IOCHCK B1
SD07 B2
SD06 B3
SD05 B4
SD04 B5
SD03 B6
SD02 B7
SD01 B8
SD00 B9
IOCHRDY B10
AEN B11
SA19 B12
SA18 B13
SA17 B14
SA16 B15
SA15 B16
SA14 B17
SA13 B18
SA12 B19
SA11 B20
SA10 B21
SA09 B22
SA08 B23
SA07 B24
SA06 B25
SA05 B26
Direction Signal
Ground GND
Output RSET DRV
Power +5V
Input IRO09
Power 5V
Input DRQ2
Power 12V
Input 0WS
Power +12V
Ground GND
Output SMEMWR
Output SMEMRD
Input/Output IORD
Input/Output IOWR
Output DACK3
Input DRQ3
Output DACK1
Input DRQ1
Input/Output REFRESH
Output BCLK
Input IRQ07
Input IRQ06
Input IRQ05
Input IRQ04
Input IRQ03
Output DACK2