4 Summary of the HP/Phoenix BIOS
BIOS Addresses
I/O Address Ports | Function | |
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0220h | - 022Fh | Audio interface 1 (Soundblaster) |
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0240h | - 024Fh | Audio interface 2 (Soundblaster) |
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0260h | - 026Fh | Audio interface 3 (Soundblaster) |
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0278h | - 027Fh | Parallel port 2 |
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0279h |
| IO read data port for ISA Plug and Play enumerator |
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0280h | - 028Fh | Audio interface 4 (Soundblaster) |
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02E8h - 02EFh | Serial port 4 | |
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02F8h - 02FFh | Serial port 2 | |
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0300h | - 0301h | |
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0330h | - 0331h | |
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0370h | - 0371h | Ultra I/O controller |
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0372h | - 0375h | Secondary flexible disk drive controller |
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0376h |
| IDE hard disk drive controller secondary channel |
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0377h |
| Secondary flexible disk drive controller |
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0378h | - 037Ah | Parallel port 1 |
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0388h | - 038Bh | |
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03B0h - 03DFh | Graphics controller (Matrox MGA) | |
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03E8h - 03EFh | Serial port 3 | |
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03F0h - 03F5h | Primary flexible disk drive controller | |
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03F6h |
| IDE hard disk drive controller primary channel |
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03F7h |
| Primary flexible disk drive controller |
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03F8h - 03FFh | Serial port 1 | |
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0496h | - 049Fh | Internal ports (Little Ben) |
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0678h | - 067Bh | Parallel port 2 if ECP mode is selected |
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0778h | - 077Bh | Parallel port 1 if ECP mode is selected |
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0CF8h - 0CFFh | Configuration registers for PCI devices | |
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