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Building RC6502 - how to test its all working?

Posted: Fri Nov 12, 2021 10:32 pm
by gmc
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?

Re: Building RC6502 - how to test its all working?

Posted: Fri Nov 12, 2021 10:44 pm
by barrym95838

Re: Building RC6502 - how to test its all working?

Posted: Sat Nov 13, 2021 7:58 am
by BigEd
Welcome, and well done!

Re: Building RC6502 - how to test its all working?

Posted: Sat Nov 13, 2021 2:16 pm
by gmc
barrym95838 wrote:
https://www.willegal.net/appleii/6502mem.htm
Perfect, thanks very much.

Re: Building RC6502 - how to test its all working?

Posted: Sat Nov 13, 2021 2:47 pm
by floobydust
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