IBM PCs

A horizontal ribbon.

BIOS Source Code and Technical References

This is where I place the original BIOS source code and Technical References for the IBM PCs and PS/2s.

IBM PC and PS/2 Technical Directory

PC and PS/2 Technical Directory, June 1988.

IBM Personal Computers and Systems

IBM Personal Computer (5150)

These IBM BIOS source files were built with Microsoft MASM 1.0.

PC BIOS Version 1, 04/24/81.
PC BIOS Version 2, 10/19/81.
PC BIOS Version 3, 10/27/82.

Technical References.

PC Guide to Operations, 6025003, August 1981.
PC Technical Reference, 6025008, August 1981.
Hardware Maintenance and Service, 6025075, August 1981.
PC Technical Reference, October 1982.
PC Technical Reference, 1502237, April 1983.
PC Guide to Operations, 6137856, April 1984.
PC Technical Reference, 6361453, April 1984.

IBM Personal Computer XT (5160)

These IBM BIOS source files were built with Microsoft MASM 2.0.

PC XT BIOS Version 1, 11/08/82.
PC XT BIOS Version 2, 01/10/86.
PC XT BIOS Version 3, 05/09/86.

Technical References.

PC XT Hardware Technical Reference, 1982.
PC XT/Portable PC Technical Reference, 6139821, March 1986.
PC XT Hardware Maintenance.

IBM Personal Computer XT Model 286 (5162)

This IBM BIOS source file were built with Microsoft MASM 2.0.

PC XT Model 286 BIOS Version 1, 04/21/86.

Technical References.

PC XT Model 286 Technical Reference, August 1986.

IBM Personal Computer AT (5170)

These IBM BIOS source files were built with Microsoft MASM 2.0.

PC AT BIOS Version 1, 01/10/84.
PC AT BIOS Version 2, 06/10/85.
PC AT BIOS Version 3, 11/15/85.

Technical References.

PC AT Guide to Operations, 1502490, March 1984.
PC AT Technical Reference, 1502494, March 1984.
PC AT Technical Reference, 6139362, September 1985.
PC AT Technical Reference, 183355, March 1986.

IBM Personal Systems PS/2

Technical References.

PS2 Model 25 Technical Reference, June 1987.
PS2 Model 50 Technical Reference, May 1988.
PS2 Model 55 Technical Reference, February 1989.
PS2 Model 60 Technical Reference, May 1988.
PS2 Model 70 Technical Reference, May 1988.
PS2 Model 80 Technical Reference, May 1988.
PS2 Model P70 Technical Reference, April 1989.

General IBM Personal Computer and System References

PS2 and PC BIOS Interface Technical Reference, April 1987.
PS2 Hardware Interface Technical Reference, May 1988.
General IBM PC Model guide.

A horizontal ribbon.

Last updated: 11 October 2016