Hardware VGA, Episode 03 (Alternate, no background music): Readout module

[@rogerramjet8395]

Fantastic! Thank you so much for uploading this version. There's a lot to process, and you run through it quickly. Needed this to be able to focus. Thank you! 🙏🙇

[@davehohacks]

No problem!

[@2thinkcritically]

I've built a few concept design boards for VGA output over the years, mostly just on Breadboard but a couple on Veroboard. In all situations I've used TI 74HC components and never had issues with timing or bounce. I'd imagine I wouldn't be so lucky if I was using old chips (or fakes) rather than brand new, but I thought I'd just put that out there.

[@davehohacks]

Thanks, that's good to know! I think the main difficulty with using 74HC/74HCT is that counters (like the '163 ones I used) can't meet the setup time requirement when clocked at 25+ MHz. I could almost certainly use slower parts for some of the other chips in the design. I actually tried out a 74LS153 as the pixel color selection mux, and it worked fine.

[@joshc-dev]

i love you sir

[@joshc-dev]

keep going!

[@davehohacks]

@@joshc-dev Thanks! I'm working on a PCB, although routing is turning out to be...interesting.