System I/O address specifications
I/O address (hex) | System function (shipping configuration) | |
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000 | - 00F | DMA controller |
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000 | - CF7 | PCI bus |
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010 | - 01F | Motherboard resources |
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020 | - 021 | Programmable interrupt controller |
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022 | - 03F | Motherboard resources |
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040 | - 043 | System timer |
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044 | - 05F | Motherboard resources |
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060 | - 060 | Standard |
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061 | - 061 | System speaker |
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062 | - 062 | Microsoft |
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063- 063 | Motherboard resources | |
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064 | - 064 | Standard |
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065 | - 065 | Motherboard resources |
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066 | - 066 | Microsoft |
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067 | - 06F | Motherboard resources |
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070 | - 071 | System |
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072 | - 07F | Motherboard resources |
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080 | - 080 | Motherboard resources |
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081 | - 083 | DMA controller |
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084 | - 086 | Motherboard resources |
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087 | - 087 | DMA controller |
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088 | - 088 | Motherboard resources |
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089 | - 08B | DMA controller |
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08C - 08E | Motherboard resources | |
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08F - 08F | DMA controller | |
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090 | - 09F | Motherboard resources |
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0A0 - 0A1 | Programmable interrupt controller | |
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0A2 - 0BF | Motherboard resources | |
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0C0 - 0DF | DMA controller | |
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0E0 - 0EF | Motherboard resources | |
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0F0 - 0FF | Numeric data processor | |
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1F0 - 1F7 | Primary IDE channel | |
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274 | - 277 | ISAPNP Read Data Port |
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