I put together a tutorial for making sense of the mess of colored lines that is Visual 6502/2A03/2C02 at
http://wiki.nesdev.com/w/index.php/Visu ... t_tutorial .
As I'm still a beginner when it comes to low-level electronics, it's very possible that I've messed up in places, so feedback would be appreciated. Please also tell me if something seems unclear.
THANK YOU! I've been looking for something like this for ages, because I felt really dumb when Quietust (or anyone else) pointed stuff out on a decap, because I had no idea what I was looking at.
Thanks for writing it. I'll certainly have to read through this at some point. Hopefully some of the more experienced people can confirm whether it has any errors.
You're welcome.
Also made a thread at
viewtopic.php?f=9&t=10119 and haven't seen anyone scream yet, so hopefully no egregious errors at least.
Now has coverage of DRAM, SRAM, and PLAs too, and has been vetted a bit by lidnariq and Quietust (though the PLA section is fresh).
I got to the AND Plane and the OR Plane... will have to visit again to finish reading. Thank you very much for writing this help; should help a lot!!
Rephrased the PLA section in terms of decoders and mask ROMs, as using "PLA" for those circuits apparently is dubious (see talk page). Also added a section on shift registers.
sleepy9090 wrote:
nice job
Thanks!