Here's the full playlist from 3 years ago that explains the 6502 state machine in more detail:

https://www.youtube.com/watch?v=gHU8whQ ... Gl0QrhX9p7

Thanks! I completely missed that instruction on the main page instead of the forum page.

Hi,

Recently I wrote an OSI emulator so I could port CP/M-65 to it :mrgreen: As I can't successfully register at the osiweb forum (I never receive the confirmation e-mails after numerous tries), I thought I might as well post a message here to at least get some exposure instead of being a hidden ...

First of all, great work!

I stumbled upon a few things while recreating the schematic in KiCad/eeschema which I thought would be nice to share.

First, I noticed that the output databus is latched at the end of phase 1. That's apparently how Logisim RAM works. This is not the same as real hardware ...