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Bitfields for AMD-645 IDE Interrupt Routing register

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Bit Description

7

wait for PGNT before Grant to ISA Master/DMA

6

port 00xxh bus select:
0 = access via SD bus
1 = access via XD bus

5 - 4

reserved (0)

3 - 2

secondary IDE channel IRQ (same encoding as primary)

1 - 0

primary IDE channel IRQ
00 = IRQ14 (default for primary)
01 = IRQ15 (default for secondary)
10 = IRQ10
11 = IRQ11

See Also:

#01011