Reply to post: Re: "probably to avoid litigation with IBM"

Linus Torvalds says ARM just doesn't look like beating Intel

Richard Plinston Silver badge

Re: "probably to avoid litigation with IBM"

> Um, if I remember correctly, there was no chance of litigation since IBM did not bother to protect anything via copyright. It was a truly open market.

Your rememberence is incorrect. While the ROM BIOS source was available it was fully protected by copyright (as is all FOSS software). It wasn't until Phoenix did a clean-room reimplementation that there was a cheap enough way to implement clones. IBM did protect its copyrights agressively.

https://en.wikipedia.org/wiki/Phoenix_Technologies#Cloning_the_IBM_PC_BIOS

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