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IBM PC 5150 BIOS Versions

fs5500

Experienced Member
Joined
Nov 5, 2008
Messages
438
This is screenshot of System Information for PC-TOOLS on IBM PC 5150

5150-1.png
5150-2.png
5150-3.png
 

fs5500

Experienced Member
Joined
Nov 5, 2008
Messages
438
How to identify BIOS Chips on motherboard?
1) Rev.1 (04/24/81)
*8K chip labeled with IBM part number of 5700051

2) Rev.2 (10/19/81)
*8K chip labeled with IBM part number of 5700671

3) Rev.3 (10/27/82)
*8K chip labeled with IBM part number of 1501476
 
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