My first project: an 8-bit CPU with 5 instructions

[raiven]

Hi all,

This is my first project. I had read a book on the inner workings of a CPU and wanted to try it myself.
I have to say this is the best logic gate simulator I have ever used. This surpasses a lot of the pricey stuff in my opinion.
So my gratitude to the creator for this excellent program!

But back on topic: I have created a small 8-bit CPU with 16 bytes of ROM and 16 bytes of RAM. It took me about 2 weeks on-and-off.
It can handle 16 instructions but I have only implemented 5 for the time being (I'm running out of room. I need to re-arrange my wiring to be more compact).
But i also wanted to get some input from you guys so I thought I would post it in its current form. I have included a demo program (NOTE: I have to keep the speed/frequency low or the counters will jitter. Not sure yet why...) and have added some comments in the circuits themselves.

Any comments and suggestions are welcome.

Regards,
Raiven

[admin]

Do you have any enhancements of this project yet?