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PostPosted: Sun Jul 01, 2007 11:16 pm 
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I'd like to use a Doom cart to make a Star Fox 2 beta, to play on the real deal, but I can't seem to figure out the pinout.

Its a 40 pin SOIC mask rom, and it doesn't seem to be standard (unless I screwed up the wiring).

I know its not NES hardware, but I couldn't find any SNES hardware forums out there.

Thanks in advance,

drk421


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PostPosted: Sun Jul 01, 2007 11:28 pm 
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drk421 wrote:
I'd like to use a Doom cart to make a Star Fox 2 beta, to play on the real deal, but I can't seem to figure out the pinout.

Its a 40 pin SOIC mask rom, and it doesn't seem to be standard (unless I screwed up the wiring).

I know its not NES hardware, but I couldn't find any SNES hardware forums out there.

Thanks in advance,

drk421


Here's a pinout for the SNES cartridge connector:

http://www.gamesx.com/hwb/co_CartridgeSnes.html

You might be able to figure out the pins of the ROM chip using a multimeter and finding out what pins are connected to which lines on the cart connector.


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PostPosted: Mon Jul 02, 2007 8:15 am 
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Yeah, the problem is that the Super FX 2 chip sits between the SNES and the ROM.


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PostPosted: Mon Jul 02, 2007 12:44 pm 
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I made a StarFox 2 cart recently using a Stunt Race FX cart as a donor. It has the advantage of having a battery for the save ram. Its fast enought to be reasonably playable.

The only real difference between a Saving SFX cart and a non savmin one is that there is the battery, a power supply switcher IC (to switch between the battery and main power) and a bypass cap for said IC.

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PostPosted: Mon Jul 02, 2007 1:13 pm 
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one word google
http://snesdev.romhack.de/sf2.htm

five seconds

I did not mean to be rude but you could get information quicker if you look for yourself and in the right place


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PostPosted: Mon Jul 02, 2007 3:57 pm 
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Ah yes, that's for a 8Mbit 32 pin mask rom on a stunt race fx GSU-1 (super fx) cart.

I'd like to use a Doom cart since it uses the Super FX 2, which has two cores, and it might be faster. But unfortunately, its has a 40 pin mask rom, which I can only guess the pinout for. And was hoping someone might know here.


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PostPosted: Tue Jul 03, 2007 10:11 am 
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It doesn't really matter, you just have to connect 8mbit eprom, right ?

Anyway, I found it on my hdd, it comes from my old website.

gsu_mask_rom


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PostPosted: Wed Jul 04, 2007 9:33 am 
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Thank you very much!!!!


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PostPosted: Wed Jul 04, 2007 5:44 pm 
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I ruined a Yoshi's island the first time I tried. I think the superfx doesn't like to get too hot...


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PostPosted: Mon Jul 09, 2007 12:38 pm 
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I am curious as to how this worked out for you. any notaseable difference from the 1?


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PostPosted: Sat Jul 14, 2007 9:41 am 
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Ok, Star Fox 2 (translated version) has no frame rate increase using GSU-2 (Doom cart) over GSU-1 (Stunt Race FX).

I've heard the GSU-2 (Super FX 2) has two cores, but it seems that Star Fox 2 doesn't use the other one.

Anyone else with these same findings?


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PostPosted: Sat Jul 14, 2007 12:00 pm 
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I've heard that the only difference between SFX and SFX2 is that the SFX2 can address more ROM (32M vs 8M).


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PostPosted: Sat Jul 14, 2007 1:34 pm 
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not sure but I believe it had two cores or something. However I doubt starfox 2 uses both or it wouldn't work on version 1.


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PostPosted: Sun Jul 15, 2007 6:00 am 
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I had some doubts about building sf2b on a gsu-1 as there were some rumors that it runs with greater fps rate on gsu-2, so I didn't even bother getting the gsu-1 to check it, and built it straight away on the gsu-2 pcb from Winter Gold (PAL only).

What I read back when the cherryroms board was still alive was d4s saying that translated version of the game didn't work properly on the gsu-2. It hangs up just before Nintendo logo appears if I remember correct.


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PostPosted: Sun Jul 15, 2007 9:58 am 
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The translated version I have seems to work fine on both GSU-1 and GSU-2.

1,048,576 Star Fox 2 (Translated).rom
md5 e27fb54db09b3bc1cbb6d05b8f42ddbf

I have not tried the other beta versions, but I will give them a shot.


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