Re: 6502 core / 128 mode (re: J-Board) (fwd)

From: Ruud Baltissen (
Date: 2001-03-12 08:07:13

> The original 6500 was so much like the 6800 that they were sued for patent
> infringement.

The reason they were sued was that the 6500 was 100% pin- and
timingcompatible. So you only had to replace the CPU and the software. I'm
not familiar enough with the circumstances at that time to see how one could
benefit of this. For example replacing a Z8000 (32-bits successor of the
Z80) with a 486 I could understand.

Groetjes, Ruud

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