Specifications
Table
System I/O Addresses
I/O Address (hex) System Function (shipping configuration)
000 | - 00F | DMA controller no. 1 |
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010 | - 01F | unused |
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020 | - 021 | Interrupt controller no. 1 |
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022 | - 024 | Opti chipset configuration registers |
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025 | - 03F | unused |
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02E - 02F | 87334 “Super IO” configuration for CPU | |
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040 | - 05F | Counter/timer registers |
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044 | - 05F | unused |
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060 |
| Keyboard controller |
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061 |
| Port b |
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062 - 063 | unused | |
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064 |
| Keyboard controller |
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065 | - 06F | unused |
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070 - 071 | NMI enable/real time clock | |
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072 | - 07F | unused |
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080 | - 08F | DMA page registers |
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090 - 091 | unused | |
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092 |
| Port A |
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093 | - 09F | unused |
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0A0 - 0A1 | Interrupt controller no. 2 | |
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Maintenance and Service Guide |