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PostPosted: Fri Jan 16, 2015 1:24 pm 
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Lord_Nigh shared these links on IRC earlier, and I thought the forums would be interested. These are Decap photos made by digshadow.

FDS RP2C33: http://siliconpr0n.org/archive/doku.php?id=digshadow:nintendo:rp2c33_01a
Konami VRC VII: http://siliconpr0n.org/archive/doku.php?id=digshadow:konami:vrc_vii_053982

Unfortunately the VRC7 instrument ROM is encoded with a process that doesn't make the bits visually distinct, so they are still a mystery, but I'm told there is a chemical process that might be used to reveal the information later on.


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PostPosted: Fri Jan 16, 2015 2:47 pm 
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Any idea of where the functional groups are on each die, especially the two big solid boxes near the bottom of the 2C33?


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PostPosted: Fri Jan 16, 2015 4:17 pm 
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Those dies could contain more transistors than the original chipset on the Famicom mainboard..

The two big chunks on RP2C33 could be the ROM mask for wavetable?


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PostPosted: Fri Jan 16, 2015 7:01 pm 
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ExtraOrdinary wrote:
The two big chunks on RP2C33 could be the ROM mask for wavetable?

As I understand, those actually contain the FDS BIOS itself - the "wavetable" for FDS sound is all RAM.

Incidentally, I've started tracing the RP2C33's metal layer - watch here for progress.

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Last edited by Quietust on Fri Jan 16, 2015 9:58 pm, edited 1 time in total.

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PostPosted: Fri Jan 16, 2015 7:12 pm 
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Yeah, I totally forgot about the BIOS ROM :shock:

What type of RAM does this die include?


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PostPosted: Fri Jan 16, 2015 8:43 pm 
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Quietust wrote:
watch here for progress.

www.qmtpro.com uses an invalid security certificate.
The certificate is not trusted because no issuer chain was provided.
(Error code: sec_error_unknown_issuer)

Firefox 34 on Linux


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PostPosted: Fri Jan 16, 2015 9:06 pm 
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Could have linked http instead of https, alternatively, if the https version is really just your private thing.


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PostPosted: Fri Jan 16, 2015 9:59 pm 
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Whoops, forgot about that - switched it to http.

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PostPosted: Fri Jan 16, 2015 10:14 pm 
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Very valuable effort.. Thanks, Quietust :)


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