Isa Bus Pin Assignment - Sony 486DX User Manual

2.3.4 ISA Bus Pin Assignment

Table 2-5 ISA Bus Pin Assignment
I/O Pin Signal Name Input/Output I/O Pin Signal Name Input/Output
A1 -IOCHCK
A2 SD7 Input/Output
A3 SD6 Input/Output
A4 SD5 Input/Output
A5 SD4 Input/Output
A6 SD3 Input/Output
A7 SD2 Input/Output
A8 SD1 Input/Output
A9 SD0 Input/Output
A10 IOCHRDY
A11 AEN
A12 SA19 Input/Output
A13 SA18 Input/Output
A14 SA17 Input/Output
A15 SA16 Input/Output
A16 SA15 Input/Output
A17 SA14 Input/Output
A18 SA13 Input/Output
A19 SA12 Input/Output
A20 SA11 Input/Output
A21 SA10 Input/Output
A22 SA9 Input/Output
A23 SA8 Input/Output
A24 SA7 Input/Output
A25 SA6 Input/Output
A26 SA5 Input/Output
A27 SA4 Input/Output
A28 SA3 Input/Output
A29 SA2 Input/Output
A30 SA1 Input/Output
A31 SA0 Input/Output
Table 2-4 ISA Bus Pin Assignment
I/O Pin Signal Name Input/Output I/O Pin Signal Name Input/Output
C1 SBHE Input/Output
C2 LA23 Input/Output
C3 LA22 Input/Output
C4 LA21 Input/Output
C5 LA20 Input/Output
C6 LA19 Input/Output
C7 LA18 Input/Output
C8 LA17 Input/Output
C9 -MEMR Input/Output
C10 -MEMW Input/Output
C11 SD8 Input/Output
C12 SD9 Input/Output
C13 SD10 Input/Output
C14 SD11 Input/Output
C15 SD12 Input/Output
C16 SD13 Input/Output
C17 SD14 Input/Output
C18 SD15 Input/Output
Input B1 GND
B2 RSTDRV
B3 +5V
B4 IRQ9
B5 -5V
B6 DRQ2
B7 -12V
B8 -ZWS
B9 +12V
Input B10 GND
Output B11 -SMEMW
B12 -SMEMR
B13 -IOW
B14 -IOR
B15 -DACK3
B16 DRQ3
B17 -DACK1
B18 DRQ1
B19 -REFRESH
B20 BUSCLK
B21 IRQ7
B22 IRQ6
B23 IRQ5
B24 IRQ4
B25 IRQ3
B26 -DACK2
B27 TC
B28 BALE
B29 +5V
B30 OSC
B31 GND
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 +5V
D17 -MASTER
D18 GND
AR-B1474 User¡ ¦ s Guide
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