Mapper Decap Project

Discuss hardware-related topics, such as development cartridges, CopyNES, PowerPak, EPROMs, or whatever.

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darleiv
Posts: 69
Joined: Wed Feb 23, 2022 10:55 pm

Re: Mapper Decap Project

Post by darleiv »

I'm looking for a mmc1b mapper using only TTL does it exist?
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org
Posts: 155
Joined: Tue Aug 07, 2012 12:27 pm

Re: Mapper Decap Project

Post by org »

Do you know about KrzysioPCB made by krzysiobal? It is similar visual PCB tracing tool with direct connection to Eagle so you can turn it easily into a schematic.
Heard it now :)

But we use our own utility, Deroute. It solves slightly different problems (netlist reconstruction). https://github.com/emu-russia/Deroute

Well, it became possible to do a little bit about the subject and check out NEC UPD7756.
https://github.com/emu-russia/mappers/t ... 75X_Speech
I want to say at the beginning (in order not to destroy anyone's dreams), that I don't give any warranty, that the debug mode in 7756 will be found, but I will try to say for sure - is it there or not, based on those pics, that we have :)

I'm waiting for more pictures from Sean, because I lost his archive somewhere and he deleted it from hosting :P
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Ben Boldt
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Location: Minnesota, USA

Re: Mapper Decap Project

Post by Ben Boldt »

That is cool. I don't have this one to help test with unfortunately. But I like how you guys have been working on expansion audio stuff lately! That is very exciting.
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org
Posts: 155
Joined: Tue Aug 07, 2012 12:27 pm

Re: Mapper Decap Project

Post by org »

VRC6 (VRC VI).

The chip turned out to be ULA technology, 22 rows, 2 layers of metal.

https://drive.google.com/drive/u/0/fold ... -FW62yuZx1
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0002.jpg
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org
Posts: 155
Joined: Tue Aug 07, 2012 12:27 pm

Re: Mapper Decap Project

Post by org »

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Last edited by org on Sun Jun 25, 2023 9:40 pm, edited 1 time in total.
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org
Posts: 155
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Re: Mapper Decap Project

Post by org »

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