13/3 is Pi day is it?

For the core yes, but the I/O's max out at 4.6v, making them ideal for most scenarios.

My two chip board has been running fantastic at 25 MHz for months.

In what way?

Sorry, Digikey.

https://www.digikey.com.au/en/products/ ... 4/11591363

Mouser

I’m using 5ns ROM without any issue, with the 6502 running anywhere between 1 Hz and 25 MHz.

So 55ns ROM doesn’t seem ‘too fast’ at all.

Even the package calls is itself ‘Quad’

We can finally give BDD’s “Minor pedantic note™” back to him.

That’s three gates in your pic.

Having a severe case of "What now?". :?

I'm at the point where I can wrangle this thing to do whatever I like with it, which is leading me to the problem of "creators block". Any of the hardware challenges have now been resolved and I have a very stable little unit. Just don't know what I want to ...

I have a small SBC I created about a decade ago. It uses a W65C02 CPU, which is a static part and I use 10ns static ram and 45ns EEROM. The SRAM is the skinny dip SRAM they used to use for cache in 100MHz 486 mother boards. The slowest I've run that board at is down to 100Hz to troubleshoot some I ...

Glad you are all up and running.

Did you try my example? As I said, the timing is perfect on that. I wrote it and tested it last night, with a flicker free 640 x 480 60Hz screen right next to me.
I have not, I'm not sure how this would actually help me.
My timing is correct. Yours isn't.

Further, I do need those counts to ...

Personally, I don't even bother taking the blanking periods in to account. If the horizontal counter isn't within the visible range, don't display anything.

Dunno. I tend to avoid the quirky Verilog syntax in favour of the more C style in the example I posted.

And with the latter, I'd expect that to be running at half clock rate. Assuming HC increments with the base clock.

Did you try my example? As I said, the timing is perfect on that. I wrote it ...

As an aside regarding timings, although TinyVGA.com indicates timings in pixels, all those timings are actually related to 8-pixel-wide character cells, which I find much easier to think in since that's directly related to when you need to sample video ram.

Related, loosely, but that’s where it ...