Archived copy. The original page at visual6502.org has been
returning HTTP 500 since the wiki's MediaWiki installation failed. This is a
static reconstruction from the page's original wikitext captured by the Internet Archive on
2014-12-24, by the Visual6502 project — Greg James, Barry Silverman and Brian Silverman, and the Visual6502 team, licensed
CC BY-NC-SA 3.0.
6502 logic diagram detail: last few stages deriving the increment PC control signal