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ForumsSega Master System / Mark III / Game GearSG-1000 / SC-3000 / SF-7000 / OMV |
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Posted: Sat Jan 05, 2019 5:44 pm |
Think I found it | |
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Posted: Sat Jan 05, 2019 5:52 pm |
They should all be in the ZIP file: http://www.smspower.org/forums/download.php?id=14127 |
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Posted: Sat Jan 05, 2019 5:56 pm |
Yeah thanks I searched for zip and found it. | |
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Posted: Wed Jan 16, 2019 8:38 pm |
Wow. These "hacks" here are a great project. And i also saw, that here on "SMS POWER" are alot of "Game Gear to Master System" hacks too, which not only runs then on "Master System", but also on a real "Mega Drive" using an Everdrive for example. Would be fantastic, when the "SG 1000" game "Guzzler", which here in this thread is also listed and then comes out as a "Game Gear" game after the transformation, could be transformed in a Master System game. Then people could play it on their Mega Drive consoles. And i am a fan of "Guzzler", cause the Arcade machine of this game was in a Arcade gaming room here in my town when i was a kid. Played it alot back in the days. Sadly the only home-version of this game seems to be for the SG-1000. It don't exist on any other platform, but with this transformation way, i could play it on my Mega Drive. If any of the "Game Gear to Master System" hack experts could please have a look on the "SG-1000 to Game Gear" transformed rom of "Guzzler" and make it Master System compatibel, it would really be superb !!! |
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Posted: Wed Jan 16, 2019 8:58 pm |
That would require a much more involved porting effort.
The Mega Drive hardware's SMS-compatible mode does not include the SG-1000 video modes used by these games. The Game Gear hardware, in contrast, does implement an extended palette-remappable version of these modes but is missing the necessary palette initialization code in its BIOS. Pretty much all these hacks do is initialize the palette and then run the rest of the game unmodified. |
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Posted: Thu Jan 17, 2019 8:57 pm |
Ah okay, i understand. That's too bad, would have been great to play Guzzler on my Mega-Drive. |
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Posted: Thu Apr 18, 2019 8:43 am |
I bought a Mega Sg, and today I got around to trying my homebuilt adapter in this thread (see the first post) on it.
I plugged in the Analogue Master System adapter into the Mega Sg, and then plugged my SG-1000/Mark III>Master system adapter into that. Every SG-1000 and Mark III game I tried loaded up and played! I tried: Cartridges -------------------- Sega Flipper (SG) Championship Boxing (SG) Girl's Garden (SG) Home Majong (SG) Congo Bongo (SG) Zaxxon (SG) The Castle (SG) Zaxxon 3D (Mark III) My Cards (via the Card Catcher) --------------------- Choplifter (SG) Championship Lode Runner (SG) Bank Panic (SG) Championship Boxing (SG) Rock'n Bolt (SG) Soukoban (SG) Championship Ice Hockey (SG) Spy vs. Spy (Mark III) I only had problems playing one game: Soukoban. This loaded, but kept glitching out and crashing. Collision detection was totally broken. This game card works fine on a SG-1000 II I picked up in the 16 months or so since I started this topic. The issue might be with the Mega Sg, or there could be something different with this game compared to the others such that my adapter screws up the game. Also, SG controllers work when plugged into the Mega Sg for SG games. The SG controllers are so terrible though that I don't think I will ever do so again. As for the palette that SG games load in: it looks like it might be the TMS palette. I loaded up two copies of Girl's Garden, one on analog RF from my SG-1000 II and one on HDMI from the Mega Sg on a Japanese television. The colors were close, but the Mega Sg colors were darker/muted compared to the SG-1000 when I flipped back and forth between inputs. This might be because of some extra processing my TV was doing. Didn't spend a lot of time looking into it. Anyways, once Analogue releases more of their adapters for this system it'd be interesting to see how it compares to the adapters I and other have come up with. |
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Posted: Thu Apr 18, 2019 12:09 pm |
Are you doing the CRAM thing described here? Or something different? |
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Posted: Sun Apr 28, 2019 1:08 am |
Yeah, like that except with choice of three different palettes — two are more like TMS, the other is basically identical to SMS's TMS modes (so, the one on that post). For each palette there is a more accurate version used in high-color depth GG-native mode (however that will cut off the screen edges) and a low-color depth version used in GG-SMS mode (some hues are adjusted to keep palette entries distinct in the TMS-derived palettes in this case though). Palette selection is by direction pad pressure during a start-up "rainbow BG color" animation, and uses up/neutral/down to select one at the very end of the animation. You can modify the included sources if you prefer different colors of course | |
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Posted: Thu Jun 18, 2020 3:23 pm |
Hey man. Although this topic is all about playing the good SG-1000 games on Game Gear, I'm just wondering if it was possible to use a Master System to Game Gear Converter (No, not that one cartridge with small screen size, I'm talking about using full SMS palette just like using SG-1000 palettes.)? Maybe just the SG-1000 games will be fine if it's not possible. I'm also just curious. |
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Posted: Thu Jun 18, 2020 3:41 pm |
Not sure I understand... Game Gear plays Master System games just fine for the most part, provided you use one of the converters (Master Gear Converter or similar), a flash cartridge (EverDrive GG or similar), or one of the retail game cartridges that was wired for GG-SMS (Castle of Illusion is one example).
The original GG screen's resolution left something to be desired for SMS games but the vast majority are at least playable. Unlike the SG-1000 games, SMS games using non-TMS video modes already configure their own color palettes, and these are reproduced fairly accurately on the Game Gear except that the image is crudely downsampled in the horizontal dimension with only two color subchannels being reproduced on the GG LCD per SMS pixel (RG-, -GB, or R-B, depending on the column) which can render some text unreadable depending on the colors and font used. (Games already designed for playability on NTSC televisions with their severe color degradation tend to fare slightly better than those only designed for PAL) The McWill screen mod reproduces all the SMS color subchannels and is definitely recommended for improving image quality and reducing eye strain, despite its inaccuracies in the brightness of the blue subchannel. edit: Oh and converting a game from SMS mode to GG-native mode - I guess you could call it "SMS2GG" - is certainly possible too, increasing the color depth available to the game to RGB444 from RGB222, but it comes with significant downsides: only the central portion of the SMS screen is visible on the GG display, so gameplay generally needs to be adapted, and all color palette initialization code needs to be located and adapted to write twice as much palette data. Typically support for the GG Start button needs to be added, and multiplayer support removed, modified to use only Player 1 controls, or rewritten significantly to use the link cable and communicate & synchronize with another copy of the same game running on the remote system. Some commercial games were likely converted in this manner (though typically using source-level modification and re-compilation/re-assembly rather than machine code patching) for their official GG releases, e.g. Bubble Bobble. Sound output can also be improved, taking advantage of additional hardware capabilities. Additional working RAM is available too, which can sometimes be helpful when porting. |
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Posted: Mon Nov 09, 2020 3:04 pm |
Okay, also, I have patches for something called 128 Total. I did see that page before, but is there a download for that anywhere or in that one page? |
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Posted: Wed Nov 11, 2020 3:51 pm |
I think it's waiting in the smspower release queue still | |
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Posted: Sat Aug 14, 2021 8:58 pm |
Oh, okay then. Also, I tried to do a Start button test for when pausing a game. It doesn't work yet, but I'm still trying. Keep your fingers crossed if we do get this feature. |
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Posted: Sun Aug 15, 2021 4:38 am |
So, results back. Bomb Jack using the GG start button, made a TMR SEGA header (GG styled), used input $00 for the start, aaaaaaaaaannnnnnd...... You can start the game easily by pressing start, though, when you press start in game, you get Bomb Jack jumping.
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Posted: Mon Aug 16, 2021 2:32 pm |
hello guys, does anyone have hero sg 1000 for master system 32k to use in cartridge? | |
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Posted: Mon Aug 16, 2021 3:19 pm |
Hmmmmmm... There's only the SG-1000 H.E.R.O. I don't know if anybody planned on sending it to the SMS, but I can see if I can get it to the SMS. |
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Posted: Fri Aug 20, 2021 3:15 am |
The sg2gg patch for H.E.R.O. adds an export header with a checksum I believe. Is that what you're looking for? | |
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Posted: Fri Aug 20, 2021 10:59 am |
So the SMS Export header is that when you want to play it on a big screen, you switch it to the SMS? I thought you could just play it easy on the GG with it's own empty header, even the Japanese SMS agrees on having an incorrect header. |
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Posted: Fri Aug 20, 2021 3:15 pm |
My beliefs:
Export SMS needs header with valid checksum Japanese SMS, Mark III, and Korean Gam*Boy/Aladdin Boy don't check for a header Game Gear with no BIOS doesn't check for a header Game Gear with BIOS checks for a header but doesn't care about the checksum (I think it's all zeroes in official releases) Also, not typically relevant for SG-1000 games due to missing the video modes they use, but I believe adapters for playing SMS and Mark III games in Mega Drive/Genesis consoles don't check for a header either All SG2GG patched ROM's should work on Game Gear, SMS, Mark III, Aladdin Boy, and Gam*Boy consoles that don't check the header. Those marked with * in the manifest.txt should additionally work on Game Gear and SMS consoles that do check the header. |
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Posted: Sat Mar 26, 2022 4:01 pm |
This is probably a dead forum chat, but wakey-wakey. Remember when I was trying to test out the start button to pause the game? It so happens that I just made that into a reality. I took a look at gdx's way for the MSX when he converted Championship Lode Runner to the MSX, so I decided to try it out too. So, yeah. Also, I'm using my color converter method. So you will see a ton of SG-1000 colors mixed up.
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Posted: Sat Mar 26, 2022 6:34 pm |
Nice! Making the start button pause is very handy |
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Posted: Sun May 08, 2022 12:59 am |
Is there any way how you guys or whoever did this manage to shrink the screen for the Game Gear? Any source? |
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Posted: Sun May 08, 2022 5:36 pm |
Only way I know is to force it into SMS mode. EverDrives do that when file extension is sms rather than gg. Electrically there is a pin on the Game Gear cartridge slot that the cartridge uses to select the system mode (GG vs SMS.) There is also "TV" mode but that one is fairly useless for most purposes since it stops the CPU I believe and changes the meaning of many other pins. | |
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Posted: Sun May 08, 2022 6:26 pm |
Hmm. |
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