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AR-B1474 User¡¦s Guide
2-5
2.3.4 ISA Bus Pin Assignment
I/O Pin Signal Name Input/Output I/O Pin Signal Name Input/Output
A1 -IOCHCK Input B1 GND Ground
A2 SD7 Input/Output B2 RSTDRV Output
A3 SD6 Input/Output B3 +5V Power
A4 SD5 Input/Output B4 IRQ9 Input
A5 SD4 Input/Output B5 -5V Power
A6 SD3 Input/Output B6 DRQ2 Input
A7 SD2 Input/Output B7 -12V Power
A8 SD1 Input/Output B8 -ZWS Input
A9 SD0 Input/Output B9 +12V Power
A10 IOCHRDY Input B10 GND Ground
A11 AEN Output B11 -SMEMW Output
A12 SA19 Input/Output B12 -SMEMR Output
A13 SA18 Input/Output B13 -IOW Input/Output
A14 SA17 Input/Output B14 -IOR Input/Output
A15 SA16 Input/Output B15 -DACK3 Output
A16 SA15 Input/Output B16 DRQ3 Input
A17 SA14 Input/Output B17 -DACK1 Output
A18 SA13 Input/Output B18 DRQ1 Input
A19 SA12 Input/Output B19 -REFRESH Input/Output
A20 SA11 Input/Output B20 BUSCLK Output
A21 SA10 Input/Output B21 IRQ7 Input
A22 SA9 Input/Output B22 IRQ6 Input
A23 SA8 Input/Output B23 IRQ5 Input
A24 SA7 Input/Output B24 IRQ4 Input
A25 SA6 Input/Output B25 IRQ3 Input
A26 SA5 Input/Output B26 -DACK2 Output
A27 SA4 Input/Output B27 TC Output
A28 SA3 Input/Output B28 BALE Output
A29 SA2 Input/Output B29 +5V Power
A30 SA1 Input/Output B30 OSC Output
A31 SA0 Input/Output B31 GND Ground
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 D1 -MEMCS16 Input
C2 LA23 Input/Output D2 -IOCS16 Input
C3 LA22 Input/Output D3 IRQ10 Input
C4 LA21 Input/Output D4 IRQ11 Input
C5 LA20 Input/Output D5 IRQ12 Input
C6 LA19 Input/Output D6 IRQ15 Input
C7 LA18 Input/Output D7 IRQ14 Input
C8 LA17 Input/Output D8 -DACK0 Output
C9 -MEMR Input/Output D9 DRQ0 Input
C10 -MEMW Input/Output D10 -DACK5 Output
C11 SD8 Input/Output D11 DRQ5 Input
C12 SD9 Input/Output D12 -DACK6 Output
C13 SD10 Input/Output D13 DRQ6 Input
C14 SD11 Input/Output D14 -DACK7 Output
C15 SD12 Input/Output D15 DRQ7 Input
C16 SD13 Input/Output D16 +5V Power
C17 SD14 Input/Output D17 -MASTER Input
C18 SD15 Input/Output D18 GND Ground
Table 2-5 ISA Bus Pin Assignment