I've been working on this homebrew for 4 years. I think I'm finally done.

https://youtu.be/0BFpo2a4FHQ

Some mockingboard fun

September 6, 2024
https://youtube.com/shorts/Q3M9Pnh8ROo?feature=share

See the attached image.

Is the green box region (tDSR+tHDR) the period of time where the 6502 expects valid data on the data bus?
Or is that tACC? If it's tACC, how long do I need to have the data lines stable prior to phi2 rise for 6502 to do a valid read operation?

And the green box (tMDS+tDHW ...

My exploration of the Apple II joystick and hacking an SNES Gamepad to work with Apple II games on my homebrew computer:

3RIC Gets Joysticks! Hacking SNES gamepad for Retro Gaming Glory
https://youtu.be/HeC8wlNiH0c

> Emulating the mind-bending Apple II high-res graphics color over VGA.

I'd to read more about how you approached that!

BTW, I see you've shared your Kicad schematics - it would be great if you could also share PDFs of those.

Done.

https://github.com/ebadger/3ric/blob/main/schematic_pdf/3ric ...

Thanks all, happy to be here. 6502.org resources have been very helpful!

Started as a Ben Eater 6502 kit and has gone feral.

Things that I'm ridiculously happy about:

Building a VGA circuit that shares the RAM with CPU at 1.57MHz and works reliably.
Emulating the mind-bending Apple II high-res ...

This seems relevant to the topic:

Hi 6502 people, check out my project:
https://www.youtube.com/watch?v=1Ee2avG ... yRJ4AaABAg