Timing Diagrams. Visualizing 65xx Timing.

[Dr Jefyll]

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Visual Guide to 65xx CPU Timing

The animated "rubber band" diagrams in this article are drawn to scale (unlike most in data sheets). They offer insight into real-world timing margins and the tradeoffs between them.



Comments and questions are welcome here in this forum topic. The article itself is subject to editing and re-editing if there's anything I've overlooked, and may be considered a work in progress. Thanks, Garth and Ed, for your advance input on what I've written so far.

-- Jeff

[Dr Jefyll]

( this null post is a placeholder I may use in future )

[cr1901]

Is this post in light of my misconceptions in the DMA thread?

[Dr Jefyll]

Quote:

Is this post in light of my misconceptions in the DMA thread?

No, some of these points have already been the subject of discussion. But it can be a slippery topic to deal with piecemeal. That's why I wanted to try to clear the deck and lay out the basics. As for the diagrams, I know that's how I mentally visualize timing matters myself. So I decided to render them as GIF's, on the premise that a picture is worth 1,000 words. (or 1024 words maybe!)

[clockpulse]

Nice work!

[BigDumbDinosaur]

Looks good. Guess you were staying up past bedtime to make timing charts.

[Michael]

Thank you, Jeff.

[Tor]

Superb. Thank you!

-Tor

[Dr Jefyll]

Cheers, fellas -- 'ppreciate the response.

I'm pleased with how the animated GIF's turned out. I just hope they render properly in all the various browsers out there. So far the only problem I've noticed is that GIF03 makes me seasick if I watch it too long!

-- Jeff