Talk:MOS Technology 6502/Archives/2020

Latest comment: 4 years ago by 95.128.95.14 in topic Layout engineer for 6502


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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