I've just built the RC6502-Apple-1-Replica PCB and populated with all chips (RAM, ROM etc)

Project link:
https://github.com/tebl/RC6502-Apple-1- ... %201%20SBC

Just fired it up and connected up a USB to the Arduino and it looks like its all working.
Wrote a quick hello world program which works.

My question is now before I pat myself on the back how can I see 100% sure everything is working as it should. Like for example how can I test the RAM is working as expected. I'm guessing the ROM works as it contains BASIC and the small program I run works.

Is there anything else I should be checking, and if so how can I test it?

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Got a kilobyte lying fallow in your 65xx's memory map? Sprinkle some VTL02C on it and see how it grows on you!

Mike B. (about me) (learning how to github)

Welcome, and well done!

Perfect, thanks very much.

You may also find the following book useful... it contains many useful routines and was written using an Apple II. I still have my original hardcopy book, but the PDF version linked here is nice to have:

http://www.atarimania.com/documents/650 ... utines.pdf

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Regards, KM
https://github.com/floobydust