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This is a reconstruction of the original 1981-82 IBM PC BIOS source code using scanning and transcription of the BIOS listings found in the IBM Technical Reference manuals.

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IBM-PC-BIOS

This is a reconstruction of the IBM PC BIOS source code using scanning and transcription of the BIOS listings found in the IBM Technical Reference manuals.

The following BIOS source code has been reconstructed:

IBM PC Version 1 - 21/04/81

IBM PC Version 2 - 19/10/81

IBM PC Version 3 - 27/10/81

Notes:

• All 3 versions of the IBM PC BIOS were built using Intel ASM86 on an Intel development system. In each case the BIOS source code is a single large file and the BIOS code is 8KB which resides at F000:E000

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This is a reconstruction of the original 1981-82 IBM PC BIOS source code using scanning and transcription of the BIOS listings found in the IBM Technical Reference manuals.

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