![](/images/new-backgrounds/1332771/332771179x1.webp)
I/O address (hex) | System function (shipping configuration) |
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220 - 22F | Entertainment audio |
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230 - 26D | Unused |
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26E - 26 | Unused |
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278 - 27F | Unused |
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280 - 2AB | Unused |
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2A0 - 2A7 | Unused |
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2A8 - 2E7 | Unused |
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2E8 - 2EF | Reserved serial port |
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2F0 - 2F7 | Unused |
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2F8 - 2FF | Infrared port |
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300 - 31F | Unused |
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320 - 36F | Unused |
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370 - 377 | Secondary diskette drive controller |
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378 - 37F | Parallel port (LPT1/default) |
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380 - 387 | Unused |
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388 - 38B | FM |
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38C - 3AF | Unused |
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3B0 - 3BB | VGA |
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3BC - 3BF | Reserved (parallel port/no EPP support) |
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3C0 - 3DF | VGA |
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3E0 - 3E1 | PC Card controller in CPU |
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3E2 - 3E3 | Unused |
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3E8 - 3EF | Internal modem |
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3F0 - 3F7 | “A” diskette controller |
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3F8 - 3FF | Serial port (COM1/default) |
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CF8 - CFB | PCI configuration index register |
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CFC - CFF | PCI configuration data register |
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82 Chapter 6 Specifications