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A comment on PC-Retro Motherboard Kit: Build a faithful reproduction of the 1982 IBM PC 5150. Parent comment

Re:PC-Retro Motherboard Kit: Build a faithful reproduction o... by walrus01 on Sunday August 12, 2018 @02:23AM (#17743200)
Compaq created a new BIOS from a clean sheet of paper design, not a reverse engineered or ROM dump. The code of the BIOS on the PC and PC/XT were copyrighted.
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Re:PC-Retro Motherboard Kit: Build a faithful reproduction o... by jacquesm on Sunday August 12, 2018 @07:15AM (#17743885)
I heard a tale - but can't find an online reference - for the first Compaq PC BIOS containing a bit that said 'Not (C) IBM' in order to pass some software checks searching for the strings '(C) IBM' being present at certain specific BIOS addresses.
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Re:PC-Retro Motherboard Kit: Build a faithful reproduction o... by kevin_thibedeau on Sunday August 12, 2018 @03:29PM (#17746002)
Compaq wrote a specification based on IBM's published code listing. Then they handed it over to a separate team to reimplement.
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Re:PC-Retro Motherboard Kit: Build a faithful reproduction o... by Nr7 on Sunday August 12, 2018 @02:51PM (#17745811)
userbinator's post clearly mentions cloning the hardware being problematic legality-wise and I was replying to that. Nobody's saying the cloned BIOS is problematic legal-wise.
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