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 StarFox 2 Repro, and potential overclock

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AWESOMECAT

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PostSubject: StarFox 2 Repro, and potential overclock   Sun Apr 08, 2012 1:22 am

So I've made myself a StarFox 2 repro cart using a Doom donor cart and an EPROM of StarFox 2 that Drakon was kind enough to burn for me. (Thanks again!) I've got the thing all soldered together, but I have no SNES to test it on right now unfortunately :( I really hope that everything works, I've got my fingers crossed.

I only have two pictures of the process:



That stray wire is there because when I was attempting to solder the second ribbon cable onto the PCB, I lifted a trace. So I followed the trace and found that it led to that pin (pin 29 I believe) on the GPU-2 chip.
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Drakon
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PostSubject: Re: StarFox 2 Repro, and potential overclock   Sun Apr 08, 2012 12:18 pm

Yeah those solder pads are terrible they break so easily. I got tired of trying to build it myself instead I just hired doug. Glad the eprom made it to you okay.
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PostSubject: Re: StarFox 2 Repro, and potential overclock   Mon Apr 09, 2012 1:06 am

So I picked up a SNES today and tested my cart...and it worked flawlessly! After I did a victory dance, I played through the game. It was pretty fun, though disappointingly short. Also, the slowdown at some points made it sort of frustrating. I've got a 32MHz oscillator coming in the mail, so I'll see what the difference in gameplay is once I overclock it.

Picture for proof :3
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PostSubject: Re: StarFox 2 Repro, and potential overclock   Mon Apr 09, 2012 6:05 pm

Awesome. I'm looking for someone who can help me with soldering the eproms to the carts as I always manage to damage it when attempting it myself.
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PostSubject: Re: StarFox 2 Repro, and potential overclock   Fri Apr 13, 2012 12:08 am

Well, I just got my 32MHz four pin oscillator in the mail, and after hooking it up to my StarFox 2 cart, it completely failed. It didn't once make it through the intro cutscene, and most of the time, it glitched out and froze as soon as the Nintendo logo got shot by the Mirage Dragon. I have no idea why this didn't work, but for now, I'm using the onboard ceramic resonator. I'd really like to get this figured out without having to get another oscillator, as I'm planning to give this as a gift tomorrow evening, but I don't have my hopes up. I can just use the onboard clock.
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PostSubject: Re: StarFox 2 Repro, and potential overclock   Fri Apr 13, 2012 8:18 am

Did you disconnect the gsu 2 clock trace from the original ceramic resonator circuit? like 100% disconnect it?
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PostSubject: Re: StarFox 2 Repro, and potential overclock   Fri Apr 13, 2012 3:44 pm

Drakon wrote:
Did you disconnect the gsu 2 clock trace from the original ceramic resonator circuit? like 100% disconnect it?
I'm almost positive I did. After I cut the trace, I plugged it into my SNES to test it, and all I got was a black screen when I powered it on. I'll definitely double check that, and see if it helps. Thanks for the tip!
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PostSubject: Re: StarFox 2 Repro, and potential overclock   Sat Apr 14, 2012 12:18 am

AWESOMECAT wrote:
Drakon wrote:
Did you disconnect the gsu 2 clock trace from the original ceramic resonator circuit? like 100% disconnect it?
I'm almost positive I did. After I cut the trace, I plugged it into my SNES to test it, and all I got was a black screen when I powered it on. I'll definitely double check that, and see if it helps. Thanks for the tip!

Even if you get a black screen that doesn't mean it's completely disconnected. Strange because with starfox 2 I can run it at like 33 mhz most of the time 32 mhz is the safe speed.
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