Thanks! I'm new to CPLD's. I'm curious; How can you tell if a device can contain a particular logic function? I mean, it's easy to determine whether the number of pins is sufficient or not for outside operation. But how can you tell that the particular implementation will "fit" in a certain device ...

I'm hijacking this thread a bit since I also have a question about the ATF22V10C..
I cannot for my life find any information about the number of buried registers in this (underwhelming) datasheet: https://www.elfa.se/Web/Downloads/_t/ds/ATF22V10C-15PU_eng_tds.pdf
Specifically how do I tell WinCUPL ...

Hi! I just wanted to drop in and say hello! I'm Erik, a software guy by trade but with a soft passion for hobby hardware and in particular the 6502!

Also wanted to share a brainfart that caused me hours of debugging with the oscilloscope. I have a small breadboard computer going with a R65C02, ROM ...

The reason you’re seeing garbled characters on startup without the CPU is most likely because nothing (a.k.a the CPU) have been able to clear screen RAM yet, so the memory just holds trash. But you can cross the fly back transformer off the list now :)

You mentioned hot ROM. If you got a ...