Made a Visual 6502/2A03/2C02 circuit reading tutorial

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ulfalizer
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Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by ulfalizer » Fri May 24, 2013 12:07 pm

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.

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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by Drag » Fri May 24, 2013 9:40 pm

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.

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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by thefox » Sat May 25, 2013 4:42 am

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.
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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by cpow » Sat May 25, 2013 6:11 am

Nice work!

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ulfalizer
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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by ulfalizer » Sat May 25, 2013 7:20 am

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.

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ulfalizer
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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by ulfalizer » Thu May 30, 2013 8:30 am

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).

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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by unregistered » Thu May 30, 2013 12:22 pm

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!! :D

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ulfalizer
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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by ulfalizer » Mon Jun 03, 2013 4:24 am

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.

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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by sleepy9090 » Tue Aug 13, 2013 6:48 pm

nice job

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Re: Made a Visual 6502/2A03/2C02 circuit reading tutorial

Post by ulfalizer » Wed Aug 14, 2013 2:17 am

sleepy9090 wrote:nice job
Thanks!

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