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Topic: Super Gameboy hacking... reading rom? (Read 806 times)
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der Warst
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« on: January 04, 2007, 07:56:13 am » |
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Hey,
I'm totally new to Romhacking, so if you're out for newbie-bashing, here I am. For a project I'm working on right now, I need a Super Gameboy with different backgrounds. Of course, that would involve physically removing the original Rom chip and replacing it with one with a different Program. Since I'm not that bad with soldering and own an Eprom Programmer everything would be just fine if it wasn't for those pesky custom Nintendo chips.
So here are a few Questions that I would be very grateful to get answered:
Does anyone of you know a source for docs about the SYS-SGB-chip in the SGB?
Does anyone of you know a way to find out the pinouts of a chip somehow without datasheet?
Has anyone of you ever seen the Super Gameboy Rom for download somewhere?
This is what it looks like:
Thanks for any help,
der Warst
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KingMike
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« Reply #1 on: January 04, 2007, 08:40:45 am » |
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Look in the ROM sites thread in General Discussion. Nearly any site with the full set of SNES ROMs should have it.
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Skeud
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« Reply #2 on: January 04, 2007, 10:30:51 am » |
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deespence2929
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« Reply #3 on: January 04, 2007, 03:38:21 pm » |
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Supergameboy should of had SRam. I always hated not being able to save my borders.
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der Warst
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« Reply #4 on: January 05, 2007, 07:00:02 am » |
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Heey,
Seems like i've been sitting on my eyes or simply went to the wrong ROM sites.
Ah, and thanks for the schematic. I found it once while roaming the net, but forgot to save it and then forgot where I found it even if I've been to Jeff Frohweins site an awful lot. Great to have it finally.
I guess it's normal for the Rom not to work in Emulators since there is no way of inserting a GB game, right?
Do you think It can be replaced with a 27C2001 eprom (of course with an adapter)?
Anyway, thank you very much,
der Warst
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RedComet
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« Reply #5 on: January 05, 2007, 08:16:08 am » |
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I think BGB has built-in support for the Super Gameboy. I know there was at least one emulator that ran Super Gameboy roms in all their color glory.
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Sliver X
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« Reply #6 on: January 05, 2007, 08:35:50 am » |
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What he means is that a SNES emulator can't really do much with the SGB BIOS, for two reasons:
You can't load a GB ROM into it, and most importantly, there's no emulation of the Gameboy hardware in any SNES emulator: The SGB has a basically complete Gameboy inside of it.
And while there are Gameboy emulators such as BGB and Visual Boy (Advance) that emulate some aspects of the SGB, this too is incomplete because there's no SNES emulation in any GB emulator; some Super Gameboy enhanced games can actually load 65c816 code and even SPC data to the SNES for processing.
The best example of this is the Donkey Kong SGB game, which is missing a ton of sound effects that are normally present when using real hardware.
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der Warst
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« Reply #7 on: January 05, 2007, 01:39:16 pm » |
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What he means is that a SNES emulator can't really do much with the SGB BIOS, for two reasons: Exactly. I was hoping I could at least change the Backgrounds in a SNES emulator, but the picture freezes at the first screen and nothing happens when I try to reach the Menu by pressing L and R. Do you know if this behavior is the same with a Hardware SGB without Gameboy cart? I have no TV right now, so I can't test it. |
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hippiejake
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« Reply #8 on: January 05, 2007, 07:59:18 pm » |
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Yeah, that's normal.  |
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MegaManJuno
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« Reply #9 on: January 05, 2007, 08:02:02 pm » |
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Yeah, just double checked with mine since I wasn't 100% sure...
Loads up with a picture of a gameboy cart centered in the screen with a blinking red X over the cart, when no GB cart is in the slot. Doesn't seem to allow you to do anything on hardware either (i.e.: can't access the SGB menu).
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Doom127
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« Reply #10 on: January 06, 2007, 01:49:14 am » |
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I would be seriously surprised if anyone got the Super GameBoy to run on an emulator. To put it into simplistic terms, the SGB is a full-fledged GB (that means it contains all the internal GB hardware except of course the LCD screen and speakers and buttons) sitting in a SNES cartridge that sends out its video and audio through the SNES, and recieves its controller input through the SNES pad, all of this being integrated and coreographed by the SGB's ROM. GB emulators have managed to figure out how to extract and use the stored palletes and backgrounds, but in order for full SGB emulation, one would have to integrate both a SNES AND a GameBoy emulator, and then modify the GB emulator to operate like the SGB does. I don't think this has been accomplished at the moment- I'm not honestly sure it ever will.
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Maegra
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« Reply #11 on: January 07, 2007, 12:47:51 pm » |
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well if it ever became accomplished (please god oneday let the ZSnes team implement it) i would be playing Metroid 2 all day and night, hell if it started working on any user friendly SNES emulator it would really refresh GB games, color hacks and whatnot.
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Doom127
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« Reply #12 on: January 07, 2007, 09:35:04 pm » |
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well if it ever became accomplished (please god oneday let the ZSnes team implement it) i would be playing Metroid 2 all day and night, hell if it started working on any user friendly SNES emulator it would really refresh GB games, color hacks and whatnot.
If you want Metroid II in color, there's always Metroid II DX. |
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