Talk:MOS Technology 6502/Archives/2020

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Layout engineer for 6502

The text as written suggests that Bill Mensch did the "rubylithing" of the 6502 mask set. But this is disputed by Harry Bawcom in https://research.swtch.com/6502

"Bill Mensch did not layout the 6502, I did, with the help of two others.

In truth we all worked as a team but Bill didn't draw a single line on the first version of the 6502. My initials were on the die."

I suggest that "the layout" has two meanings here that get mixed up in a subtle manner: one meaning is the placement of functional blocks and buses (Mensch was probably responsible for that as a "design engineer", as an extension of the circuit design). The second meaning is the conversion to individual polygons: orientations, traces, as well as logical and physical design rule checks (Barcow and others would have done that as a "layout engineer"). — Preceding unsigned comment added by 95.128.95.14 (talk) 17:28, 9 January 2020 (UTC)

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