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A lost IBM PC/AT model? Analyzing a newfound old BIOS – OSnews

Summary by osnews.com
Some people not only have a very particular set of skills, but also a very particular set of interests that happen to align with those skills perfectly. When several unidentified and mysterious IBM PC ROM chips from the 1980s were discovered on eBay, two particular chips’ dumped contents posed particularly troublesome to identify. In 1985, the FCh model byte could only mean the 5170 (PC/AT), and the even/odd byte interleaving does point at a 16…
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osnews.com broke the news in on Wednesday, November 5, 2025.
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