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PostPosted: Wed Feb 19, 2014 11:24 am 
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Joined: Fri Oct 26, 2012 5:27 pm
Posts: 76
I find the extended features of the VRC6 a bit confusing at times, and no game ever used them. Accordingly, I've created a test rom to help implement the chip correctly. But since the test rom was created from my own understanding of the chip, it may be wrong.

If it wouldn't be too much trouble, I would appreciate it if someone could run this test rom on real hardware. both iNES 24 and 26 variants are included; running either would be sufficient.

http://www.mediafire.com/download/6hvuj ... c6test.zip

The test is fully automatic, and after approximately 8 seconds or less, will print a message on the screen.

Thank you!


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PostPosted: Sat Feb 22, 2014 3:49 am 
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Joined: Tue Aug 14, 2012 8:37 pm
Posts: 47
I gave this a run on my Everdrive N8, and it says "Test Failed: 00 09 80 81" on both ROMs.


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PostPosted: Sat Feb 22, 2014 7:37 am 
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Joined: Fri Oct 26, 2012 5:27 pm
Posts: 76
Thanks. Seems like the Everdrive N8 doesn't implement the extended mirroring mode stuff. Which is no surprise I guess, as it's not needed to run any VRC6 games. Still would like to see a test on actual VRC6 silicon, though.


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PostPosted: Sat Feb 22, 2014 4:24 pm 
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Joined: Mon Feb 07, 2011 12:46 pm
Posts: 1020
I am also interested to see it tested with actual VRC6 cartridges. We can figure out more how it works, and therefore to fix emulators and so on to support these features. Although no existing games use it, it is necessary to make a complete VRC6 implementation, and may be useful in future in case someone is writing more programs that use VRC6 mapper.

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PostPosted: Thu Dec 25, 2014 11:39 pm 
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Joined: Thu Dec 25, 2014 11:19 pm
Posts: 1
I don't know if it's still useful anymore, but I came across this post shortly after I finished putting sockets on an Esper Dreams 2 cart to try out the translation, so I thought I'd give your test a try. I used vrc26test mirrored to fill 28f512s, and when I ran it in my top loader with famicom adapter, I got "All Tests Passed!" Also, the translation worked!
Oh, just in case, the chip is a
053329
VRC VI 1105-0039
9010EAY


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PostPosted: Fri Dec 26, 2014 1:05 am 
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Joined: Sun Apr 13, 2008 11:12 am
Posts: 7714
Location: Seattle
The original cartridge that I asked BootGod to extract the truth table from was a copy of Madara, so it's nice to have corroboration here.


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