I/O Address Map
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| Hex Range | Devices |
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| Secondary IDE |
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| Primary IDE |
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| Parallel Printer Port 2 |
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| Serial Asynchronous Port 2 |
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| Parallel Printer Port 1 |
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| Floppy Disk Controller |
| |
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| Secondary IDE |
| |
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| Primary IDE |
| |
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| Serial Asynchronous Port 1 |
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| 0CF8 | Configuration Address Register |
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| 0CFC | Configuration Data Register |
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| Parallel Printer Port 1 |
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IRQ Assignment Map
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| IRQx | System Devices |
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| IRQ0 | Timer | N |
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| IRQ1 | Keyboard | N |
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| IRQ2 | Cascade Interrupt Control | N |
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| IRQ3 | Serial Alternate | Reserved |
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| IRQ4 | Serial Primary | Reserved |
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| IRQ5 | Reserved |
| |
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| IRQ6 | Floppy Disk | Reserved |
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| IRQ7 | Parallel Port | ReservedReserved |
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| IRQ8 | Real Time Clock | N |
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| IRQ9 | N | Reserved |
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| IRQ10 | N | Reserved |
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| IRQ11 | N | Reserved |
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| IRQ12 | PS/2 Mouse | Reserved |
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| IRQ13 | Math Coprocessor Exception | N |
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| IRQ14 | Primary IDE | Reserved |
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| IRQ15 | Secondary IDE | Reserved |
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NOTE: N - Not be used
14 | Chapter 1 |
