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This page is dedicated to the discussion of converting Game Gear games to Master System games. Feel free to post any questions, comments, or even your own conversions. If you don't have real hardware to test (SMS/Genesis & a ROM cart), many readers here will offer to test for you.

If you're going to submit patches for review and to post on the GG2SMS page, please upload them as a zip file, using the following file formatting. I know it's a pain, but I've spent countless hours updating other people's formatting and it's very hard to keep up.

Here's a how-to video, for people who prefer those over written instructions: https://youtu.be/cPHSjD_k7Zc

FILE FORMATTING
- First, check the GG2SMS section to see if a patch already exists: http://www.smspower.org/Hacks/GameGearToMasterSystem

- Next, go to the corresponding game page to get the proper name formatting: http://www.smspower.org/Games/Index

- Include your patch as an IPS file (NOT an SMS file), formatted to match the name found above, but add "-GG2SMS-#" at the end, with "#" being the version number.

- If an existing version of the patch doesn't already exist in the GG2SMS section, please include a screenshot of the title screen as a PNG, with the same formatting, but "-Title.png" at the end.

- If there's already a patch for the game, feel free to include any screenshot's you'd like in PNG format, showcasing your work.

- Include a readme.txt with all relevant info, including the date and versions.

- Save the above files (minimum the .ips and readme) as "-GG2SMS-#".

EXAMPLE OF NEW PATCH
Let's say I patched Aladdin and wanted to call it "version 1". I'd see that the games page is "http://www.smspower.org/Games/Aladdin-GG", so I'd create an ips patch labeled:
Aladdin-GG-GG2SMS-1.ips

I'd then take a screenshot of the title screen and name it (capital 'T'): Aladdin-GG-GG2SMS-Title.png

Finally, I'd create a readme.txt file that looked something like this:
Aladdin v1 by RetroRGB - 2015-12-31
* Start is Up+1
* Artifacts on menus and around the screen.

Then I'd zip them all into a file called: Aladdin-GG-GG2SMS-1.zip

EXAMPLE OF UPDATING SOMEONE ELSE'S PATCH
Let's say I wanted to add to Revo's Lost World patch - I'd download the current version and label mine the next revision number. At the time of this post, it's at v0.2, so I'd label mine: LostWorld-GG-GG2SMS-0.3.ips.

Then, I'd add my description to the top of the readme:

Lost World, The - Jurassic Park WIP v0.3 by RetroRGB - 2016-12-31
* Changed colors
* Blah Blah Blah

Then I'd create and upload a zip file to this thread with my latest patch labeled: LostWorld-GG-GG2SMS-0.3.zip[url][/url]

Ok, let's start with Tempo JR. I attached the original ROM file, the IPS patch and the patched ROM to this post.

What I did on this conversion :

- accesses to the GG ports removed

- GG [Start] button replaced by the SMS [Pause] button in game and by [1] in the title screen

- Button [1] replaced by [2] in the cheat codes (the Hit & Hit Game doesn't work anymore for some reason that I don't understand !?)

- VDP's "left column blank" feature activated

- player and bosses life bars moved respectively to the top left and the top right corners of the screen

- GG palettes automatically converted to the SMS palettes format

The palette conversion is done on the fly while the palette in RAM is sent to VRAM, by only keeping the two most significant bits of each colour composant (red, green, blue) from the GG colour format :

convert_GG_palette: ld b,$20 ; hl = GG_pal_address, c = VDP_DATA ($BE)

c_GG_pal_loop: ld a,(hl)
inc hl
srl a ; RRAs should be faster ?
srl a
and %00110011
ld d,a
srl a
srl a
or d
and %00001111
ld d,a

ld a,(hl)
inc hl
and %00001100
add a,a
add a,a
or d
out (c),a
djnz c_GG_pal_loop

ret

Conversion de palette GG vers SMS.jpg (29.28 KB)

Tempo JR - IPS Patch.zip (448.26 KB)

That's awesome, thanks for posting and the detailed description!

Nice one vingazole! A sweet conversion effort as always.

The reapdating of the cheat codes commands that you did in order to have "1" as "GG Start" in the title screen is a good choice indeed.

Thank you guys :D

Bust-A-Move :

- accesses to the Game Gear ports removed

- GG [Start] button replaced by the Master System button [2]

- colours automatically converted (except for the orange, that I had to adjust - it was too close to the red)

- background tiles copied to enlarge the display

Bust-A-Move (IPS Patch).zip (283.12 KB)

Very very nice & professionnal, as always ;)
On Bust-a-move, if you press "Pause" button, "ERROR" is appearing on screen.

BUST-A-MOVE [GG to SMS]003 - copie.png (4.36 KB)

Thank you my friend :)

Oops, I forgot to put a 'RETN' at $66... I'll fix that later ;)

Thanks! I updated my page with the new patches. Once SMS Power creates their patch page, I'll just link to theirs instead.

http://retrorgb.com/gamegearongenesis.html

I'll see if I can get something set up on the site for these. We might want to deal with hacks and modifications in general, rather than just GG ports. We are also interested in holding older versions for historical purposes.

Nice page, but Galaga 2 is not from me but also from Vingazole ;)

edit: and you forgot GG Shinobi from Vingazole too.

edit2: I will try to give you soon some palette update.

For Tempo Jr I need to work on the palette of the stage 2, but I already done stage 1, others stages don't need update 'cause they are already good.

For Puzzle Bobble just 2 or 3 colors from the backround need to be change.

I also like to change the palette from the first Sega screen (the one from the game of course, not from the BIOS) to all black, like that you just have a black screen for 2 secondes and don't have to see 2 times the Sega logo.

GG Shinobi

- accesses to the Game Gear ports removed

- GG [Start] button replaced by the [UP]+[1] combination

- sprites clipping removed

- player's life bar moved to the top left corner of the screen

- GG palettes automatically converted to the SMS palettes format + manual colour adjustements

- NMI (Pause interrupt) disabled ;)

NB. many graphical glitches remain (eg: the fight upon the airplane^^) but the game is playable...

GG Shinobi - IPS Patch.zip (356.18 KB)

vingazole wrote

Thank you guys :D

Bust-A-Move :

- accesses to the Game Gear ports removed

- GG [Start] button replaced by the Master System button [2]

- colours automatically converted (except for the orange, that I had to adjust - it was too close to the red)

- background tiles copied to enlarge the display

Excellent! This is probably one of the better conversions as of now. It's pretty much complete from what I have seen (no graphical glitches so far) and I didn't expect that mockup picture I did by enlarging the background tiles would turn up to reality!

I suppose it's very complicated to hack the 1p vs 2p mode so it could be functional on the Master System, right? That would be the only remaining thing to make this perfect.

vingazole wrote

GG Shinobi

- accesses to the Game Gear ports removed

- GG [Start] button replaced by the [UP]+[1] combination

- sprites clipping removed

- player's life bar moved to the top left corner of the screen

- GG palettes automatically converted to the SMS palettes format + manual colour adjustements

- NMI (Pause interrupt) disabled ;)

NB. many graphical glitches remain (eg: the fight upon the airplane^^) but the game is playable...

This is not a new version, right? I mean, it's like the last version I tested. And you know how much I like it already. ;)

RetroRGB wrote

Thanks! I updated my page with the new patches. Once SMS Power creates their patch page, I'll just link to theirs instead.

http://retrorgb.com/gamegearongenesis.html

Good, but for Sonic the Hedgehog Triple Trouble instead of the last version that was done in Sonic Retro maybe you should add the fix that was done afterwards by vingazole. Same goes for GG Aleste II / Power Strike II.

My guess is that most games uses the Gear-to-gear to share inputs and thus a hack to allow for 2 local players isn't out of reach for the type of games where both players are sharing the display. It isn't the case for Puzzle Bobble unfortunately. Very hard.

Bock wrote

My guess is that most games uses the Gear-to-gear to share inputs and thus a hack to allow for 2 local players isn't out of reach for the type of games where both players are sharing the display. It isn't the case for Puzzle Bobble unfortunately. Very hard.

Oh, I thought the 1p vs 2p mode was like the 1p vs Computer mode, where there's actually a shared display with your CPU rival. Then I guess we are out of luck unfortunately.

A case where it could be possible then would be with hypothetical GG2SMS conversions of the first two Streets of Rage games. In both cases the Game Gear versions are different games to the Master System versions and do allow 2 players mode with shared display (unfortunately the Master System versions are 1 player only).

Revo wrote

Nice page, but Galaga 2 is not from me but also from Vingazole ;)

Thank you. I corrected it.

Wesker wrote

Good, but for Sonic the Hedgehog Triple Trouble instead of the last version that was done in Sonic Retro maybe you should add the fix that was done afterwards by vingazole. Same goes for GG Aleste II / Power Strike II.

I'll update the page with new links as Vingazole uploads them. No rush, I'll just update whenever he posts.

Also, I'd plan on keeping versions from each developer.

I guess theoretically it could be hacked to make use of the Mark III link cable. Although there wouldn't be much of an audience for such a hack, outside of someone designing a SMS equivalent.

Edit: Maybe it would be more practical to hack it to use the Zero Tolerance link cable on a Mega Drive.

It's been a while since the last time I heard about GG2SMS conversions, it's nice that they are being discussed again.
By the way, I am the author of Sonic Drift 2 SMS, that I made almost five years ago, time passes just too fast.

Alright, yesterday I was playing a bit, so here is
Sonic Labyrinth SMS Release v1

It comes as an IPS patch and with source code for the code snippets, see the attachment.

From the readme:

Quote

...
This is the first release of this patch that allows you to play Sonic Labyrinth, a game released in 1995 by SEGA for the Game Gear, on your Master System.

The game works well, and is playable, but the screen except for the portion at the center that is what the Game Gear screen used to be, can get very scrambled.

As said before, that doesn't affect the game's playability, but can be aesthetically unpleasing; this bug may be fixed in a later release of this patch.

The Game Gear START button is mapped to Button 1 on the Master System, and does what START used to do on the Game Gear (pause, etc.)

The patch applies to a ROM image of the Sonic Labyrinth cartridge; as far as I'm aware only one version exists of it, and it was released in all territories (Japan, Europe and USA).
...

I don't have any flash cartridge at the moment, so I have not been able to test this on real hardware. I tested it on MEKA and Kega Fusion.
It would be really nice if someone could test the patched game on real hardware.

@RetroRGB: thank you for bringing up discussion about this, again. Also, nextvolume is my nickname, I used that other nickname just for a brief while.

Enjoy!

slabyrinth-sms-v1.zip (5.3 KB)

Sonic Labyrinth SMS Release v1

Thanks so much for uploading! I just tested Sonic Labyrinth on an SMS and it works very well. I also tested it on Kega Fusion and both look identical, so I can assume whatever you saw in Kega is exactly what I'm seeing.

By the way, I'd never played that game before. It seems pretty neat...I'm really looking forward to trying it out now.

I have added this to the GG on SMS page and updated your nickname on both patches to nextvolume. Do you have a website or page you'd like me to link back to? I want to promote everyone's work as much as possible and hope more people will join in!

Also, would you happen to have the IPS patch for Sonic Drift 2? If not, no big deal, but I was hoping to get all of these patches in ips form.

Thank you for testing it on real hardware.
I have just made IPS patches for both Sonic Drift 2 and Sonic Triple Trouble and they are attached to this post.
I do not have a page about GG2SMS projects on my website, so you can just link to the index page.
My website is called Unhaut and the link to can be found by clicking the home page icon below this post (my post count does not allow me to post links, yet).

EDIT:
@RetroRGB: Sonic Triple Trouble is solely Glitch's work, not mine ;)

SonicTripleTrouble_0.4.zip (16.64 KB)

IPS patch for Glitch's Sonic Triple Trouble SMS 0.4

sdrift2_sms_b2.zip (1.58 KB)

IPS patch for Sonic Drift 2 SMS B2

Awesome, thank you. Everything's updated. All I need now are the patches for Galga 2 / Galga 91'. Also, are there any other conversions out there I haven't stumbled upon yet?

I'm sorry if this is a stupid question, but is there a way to allow these games to access parts of the Genesis? Specifically the Start button and stereo sound? I assume no, since in order to play these games on a Genesis, it's in SMS mode, but I thought I'd ask anyway. Thanks again!

I also tested Sonic Labyrinth on hardware console, nice job nextvolume. It's always good to have new conversions for Sonic games since Sonic Triple Trouble and Sonic Drift 2 (I remember them being posted in the Sonic Retro forums). This is a good first step, but the game suffers a bit with the expanded resolution (especially during gameplay, where limited drawing distance can be a little bit confusing), even more than Sonic Drift 2.

Aside from that, maybe some people will tell you to have Game Gear "Start" button on "2" rather than "1", although I deem it fine in "1". This game benefits from having both Game Gear "1" and "2" buttons doing the same function (spin dash) so it isn't necessary to place the Game Gear "Start" button in button combinations or somewhere else.

Regarding Sonic Triple Trouble, vingazole did some fixes to the last version done by Glitch. That would be the ideal ips patch to have.

It is possible to use a Genesis controller in SMS mode, but it requires a bit of programming work to replace the controller reading code. I'm not sure how easy it would then be to also be SMS compatible.

RetroRGB wrote

is there a way to allow these games to access parts of the Genesis? Specifically the Start button and stereo sound?

The "stereo sound", in a Genesis, is limited to the YM2612 and not to the PSG, since the Game Gear is the only console of the bunch which can pan the PSG as well. I'm not sure if you can take control of the YM2612 in SMS mode, but I know you can mod your Genesis to install a YM2413. Sadly, iirc, the YM2413 isn't stereo, either.

I had a go at adding something to the site, here's a first try:

www.smspower.org/Hacks/BerlinNoKabe-GG-GG2SMS

It needs some work, the index is crappy and it isn't integrated with the game page yet, but that's the sort of thing I'm going for.

Maxim wrote

I had a go at adding something to the site, here's a first try:

The game page looks great.

Do you fancy adding pages? You have edit permissions now, have a play and see how you get on. Make sure to take the main Games page name and then append "-GG2SMS" to the URL. Bust-a-Move is not quite finished as I didn't have the tools to make screenshots on my phone.

Maxim wrote

Do you fancy adding pages? You have edit permissions now, have a play and see how you get on. Make sure to take the main Games page name and then append "-GG2SMS" to the URL. Bust-a-Move is not quite finished as I didn't have the tools to make screenshots on my phone.

Sure. I'll give it a try sometime before the end of the week.

Maxim wrote

It is possible to use a Genesis controller in SMS mode, but it requires a bit of programming work to replace the controller reading code. I'm not sure how easy it would then be to also be SMS compatible.

Its fairly easy, with the genesis controller you have to read the controls twice, then you just have to check on the second read if the left and right buttons are pressed (both on 0). if so, than you are reading from a genesis controller, since it's impossible to have both buttons pressed.
With the Genesis controller those bits always are on 0 on the second reading.
I am working on a project thats use the Genesis controller. In my case, I test the controller before the game begins, and set the proper routine to do the readings after that, but it's easy to convert the megaDrive reading rotine to test the controller each reading.

.define Th.hi $F5
.define Th.lo $D5

.macro testController
ld a, Th.hi
out ($3F), a

push hl
pop hl

ld a, Th.lo
out ($3F), a

push hl
pop hl

in a, ($DC)
and %00001100
ld hl, readMasterSystemController
jr nz, isMasterSystem
isMegaDrive:
   ld a, Th.hi
   out ($3F), a
   ld hl, readMegaDriveController
isMasterSystem:
   ld (readControlsFunction), hl
.endm

.section "readMegaDriveController" free
readMegaDriveController:
;the Th.hi out was already done in the end of the previous reading

; TH = 1 : ?1CBRLDU 3-button pad return value
in a, ($DC)
or $c0
ld b, a

; TH = 0 : ?0SA00DU 3-button pad return value
ld a, Th.lo
out ($3F), a

;map pause to start button
ld hl, pauseButtonPressed
ld a, (hl)
and b
ld b, a
ld (hl), $ff

in a, ($DC)
rlca
rlca
or $3f
and b
ld (noHoldedKeys), a

;Set TH hi for the next pass
ld a, Th.hi
out ($3F), a
jp endControlReading
.ends

It's also worth note the necessary delays between the outs($3f) and the readings. In the test routine they are just the push/pop hl. On the reading routine, the delays are the time between two readings for the first reading and the pause to start mapping in the second reading.

Is good also to check this http://www.smspower.org/Homebrew/MegaDrive6ButtonControllerTest-SMS from Charles MacDonald. Was from that demo that I created my routines.

gvx32 wrote

it's impossible to have both [left and right] buttons pressed.

Well, most emulators allow for that, and it's especially useful for TAS purposes.

So it turns out that there's a better format than IPS - I hadn't checked since about 2003 - so I suggest we should go for UPS patches from now on. This gets us more reliable expansion, checksums on the input, and reversibility. I'll fix up the translation patches we have. Software here: www.romhacking.net/utilities/519/

Tom wrote

gvx32 wrote

it's impossible to have both [left and right] buttons pressed.
Well, most emulators allow for that, and it's especially useful for TAS purposes.

Well, I was just thinking in real hardware. But it will work with a few adjustments.

1) if on the second reading you dont get a 00 on the left and right positions, you already know that its not a genesis controller, so there's no need to test anymore

2) if you get a 00 on the second reading, but also get on the first reading, than you actually have both buttons pressed, so, in this case, you can't take any conclusions

3) if you have 00 on the second reading, but not on the first reading than you most likely have a genesis controller.

4) there's another test you can make. that's is to verify if the buttons status are different between the first and second reading. If so, you know you most likely have a genesis controller.

Well, none of this is 100% conclusive, but apply all of then is not that hard and they are pretty good. And if you verify this before the game begins, you will have a wrong anwser only if the user is actually trying to break the test.

Maxim wrote

So it turns out that there's a better format than IPS - I hadn't checked since about 2003 - so I suggest we should go for UPS patches from now on. This gets us more reliable expansion, checksums on the input, and reversibility. I'll fix up the translation patches we have. Software here: www.romhacking.net/utilities/519/

Actually the author of the UPS format quickly replaced it with another format called BPS. He insists others follow (the only advantage I recall UPS had was reversibility, which he admits has pretty limited practical use).

*sigh* There seems not to be a decent way to keep track of this stuff. BPS seems less well-supported than UPS.

OK, I fixed some remaining issues with the hacks section and hooked it into the rest of the site - so, for example, there are links between http://www.smspower.org/Hacks/BerlinNoKabe-GG-GG2SMS and http://www.smspower.org/Games/BerlinNoKabe-GG . I also created BPS versions of the patches; I decided to go with both IPS and BPS in the same download, and the help page points out the advantages of BPS.

Now all we need are more added to the site!

Hey, here 2 conversions who are not finish at all but that can be play.

(I just adapt the conversion palette code of Vingazole and remap the start button).

Start is configure on button down of controler 2.

Should work on real hardware like I removed the GG ports and fixed the checksum.

The games are Captain America and the Avengers and Super Return of the Jedi.

Enjoy.

Stuff to do for both game:

- Take of the garbage screen on menus.
- Put black on the right of the screen ('cause you can see previous decor but sometimes it's good, there is maybe a way to fix that).
- Put black on the left of the screen like Vingazole did for Tempo Jr.
- Move the life bar.
- Take off the Sega first sreen (easy for me).

coaata&srotj.zip (463.49 KB)

Today, a funny game for you guys. Ganbare Gorby!

Start configure on button down of controler 2.

Just found out that there is a European version of this game, call Factory Panic. I will maybe give a look. Also, would be great if I can configure start on button 1 of controler 1.

Enjoy.

Ganbare Gorby! (J).zip (62.1 KB)

The conversion trend from the Game Gear to the Master System is now having a boost like it never had before. This is really good for the Master System games library.

But I wouldn't remove the Sega screens from the games if you ask me, just because that was the usual procedure Sega did with their Master System releases. In fact, there are several official Master System games which do keep the Sega screens, like the Streets of Rage games.

Phantasy Star Adventure

So far my best conversion. The rom will not be public yet.

http://www.slevinproduction.com/mastersystem/

Revo, thanks for all the uploads! Do you have patches, or just the roms? I uploaded just the roms for now, as well as a link to your Phantasy Star Adventure page.

It's trivial to create patches and somewhat more legal to distribute them.

Revo wrote

Phantasy Star Adventure

So far my best conversion. The rom will not be public yet.

http://www.slevinproduction.com/mastersystem/phantasystaradventure/

So you are definitely doing a lot of conversions. How is the Fatal Fury Special conversion going?

I don't know how to do IPS patch sorry, and I don't like this kind of stuff.

I'm not working on Fatal Fury at the moment 'cause Vingazole want to work on it.

I've been working on The Itchy & Scratchy Game and I'm pretty sure that the game was developed for Master System on the first place and then adapted for the Game Gear.
'Cause of that, my conversion don't seems like a GG conversion but like a real Master System game, no glitch at all, it's really nice.
I just need to ask 2 things to Vingazole for the conversion to be finish:
- You can do Pause during the game, I would like this action to be configure on the button pause of the Master System (It's configure on button down controler 2 right know but the pause stay just 1 sec, strange shit...).
- Moving the 2 life bars on the corners.

For this game I didn't adapt the palette code of Vingazole, but I changed all the palettes colour by colour (it's actually one of the only game you can do that without glith).

The rom will not be public 'cause I want some exclusivities for my website/shop.

To finish, I'm glad to present you my conversion of Buster Ball.
Start button map on button down controler 2.
No glitch until the first goal (after you have nice garbage screen around the screen; there is probably a way to fix that).
Ready to work on real hardware. Download below.

Enjoy.

Buster Ball (J).zip (53.89 KB)

Thank you RetroRGB for the update of your page (the link of my shop on it is much appreciate).

You should edit your first post to put your link on it ;)

Revo wrote

Thank you RetroRGB for the update of your page (the link of my shop on it is much appreciate).

No problem! I really want to promote everyone's work, as a thanks for all the effort. You guys are all making Game Gear fans very happy!

Revo wrote

You should edit your first post to put your link on it ;)

Good idea. I updated it with both pages and will remove mine after the SMSPower page is complete.

Revo wrote

To finish, I'm glad to present you my conversion of Buster Ball.
Start button map on button down controler 2.
No glitch until the first goal (after you have nice garbage screen around the screen; there is probably a way to fix that).
Ready to work on real hardware. Download below. Enjoy.

Thank you, added.

Revo wrote

I don't know how to do IPS patch sorry, and I don't like this kind of stuff.

To make an IPS patch,
download Lunar IPS (http://fusoya.eludevisibility.org/lips/) and the original rom.
2 clicks and that's all.

ichigobankai wrote

To make an IPS patch,
download Lunar IPS (http://fusoya.eludevisibility.org/lips/) and the original rom.
2 clicks and that's all.

Wow, that's embarrassing. In all the years of using LunarIPS, I never realized that's all you had to do. I'll get on that tomorrow and change all the rom-only downloads to patches.

Thanks for the heads up.

You need the original unmodified rom and your modified rom to make the patch, and click on the "Create IPS patch" button ^_^

lipsnew.gif (4.71 KB)

Revo wrote

To finish, I'm glad to present you my conversion of Buster Ball.
Start button map on button down controler 2.
No glitch until the first goal (after you have nice garbage screen around the screen; there is probably a way to fix that).
Ready to work on real hardware. Download below.

Enjoy.

What's the way to restore the introductory Sega screen?

It doesn't seem to be removed, but only turned into a black screen somehow. I would like to get it back as it was.

If it's there, but black, you can try editing the palette in Meka while frozen at that point; if that works, you can try to find where the palette is set and see if you can edit it. It might need some extra code.

To map the pause button, you need to write some code at address $66. This is executed when the pause button is pressed. You should make it set a flag in memory, maybe use the address where the original code put the start button status. However, this will never unset the flag, so you need to alter the code which reads the flag so it clears it after reading.

Game Gear games use offset $66 for the Gear to Gear link. If the game supports multi player, you will find existing code there which you can overwrite with care. Otherwise you'll find nothing there and you'll need to find space for the extra code.

Author	Message
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Game Gear to Master System hacks Posted: Wed Apr 23, 2014 10:47 pm Last edited by RetroRGB on Mon Jan 30, 2017 9:46 pm; edited 3 times in total
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	This page is dedicated to the discussion of converting Game Gear games to Master System games. Feel free to post any questions, comments, or even your own conversions. If you don't have real hardware to test (SMS/Genesis & a ROM cart), many readers here will offer to test for you. If you're going to submit patches for review and to post on the GG2SMS page, please upload them as a zip file, using the following file formatting. I know it's a pain, but I've spent countless hours updating other people's formatting and it's very hard to keep up. Here's a how-to video, for people who prefer those over written instructions: https://youtu.be/cPHSjD_k7Zc FILE FORMATTING - First, check the GG2SMS section to see if a patch already exists: http://www.smspower.org/Hacks/GameGearToMasterSystem - Next, go to the corresponding game page to get the proper name formatting: http://www.smspower.org/Games/Index - Include your patch as an IPS file (NOT an SMS file), formatted to match the name found above, but add "-GG2SMS-#" at the end, with "#" being the version number. - If an existing version of the patch doesn't already exist in the GG2SMS section, please include a screenshot of the title screen as a PNG, with the same formatting, but "-Title.png" at the end. - If there's already a patch for the game, feel free to include any screenshot's you'd like in PNG format, showcasing your work. - Include a readme.txt with all relevant info, including the date and versions. - Save the above files (minimum the .ips and readme) as "-GG2SMS-#". EXAMPLE OF NEW PATCH Let's say I patched Aladdin and wanted to call it "version 1". I'd see that the games page is "http://www.smspower.org/Games/Aladdin-GG", so I'd create an ips patch labeled: Aladdin-GG-GG2SMS-1.ips I'd then take a screenshot of the title screen and name it (capital 'T'): Aladdin-GG-GG2SMS-Title.png Finally, I'd create a readme.txt file that looked something like this: Aladdin v1 by RetroRGB - 2015-12-31 * Start is Up+1 * Artifacts on menus and around the screen. Then I'd zip them all into a file called: Aladdin-GG-GG2SMS-1.zip EXAMPLE OF UPDATING SOMEONE ELSE'S PATCH Let's say I wanted to add to Revo's Lost World patch - I'd download the current version and label mine the next revision number. At the time of this post, it's at v0.2, so I'd label mine: LostWorld-GG-GG2SMS-0.3.ips. Then, I'd add my description to the top of the readme: Lost World, The - Jurassic Park WIP v0.3 by RetroRGB - 2016-12-31 * Changed colors * Blah Blah Blah Then I'd create and upload a zip file to this thread with my latest patch labeled: LostWorld-GG-GG2SMS-0.3.zip[url][/url]

vingazole Joined: 20 Feb 2008 Posts: 118 Location: Saintes, France	Posted: Thu Apr 24, 2014 12:42 pm Last edited by vingazole on Sat May 17, 2014 9:07 am; edited 4 times in total
	Ok, let's start with Tempo JR. I attached the original ROM file, the IPS patch and the patched ROM to this post. What I did on this conversion : - accesses to the GG ports removed - GG [Start] button replaced by the SMS [Pause] button in game and by [1] in the title screen - Button [1] replaced by [2] in the cheat codes (the Hit & Hit Game doesn't work anymore for some reason that I don't understand !?) - VDP's "left column blank" feature activated - player and bosses life bars moved respectively to the top left and the top right corners of the screen - GG palettes automatically converted to the SMS palettes format The palette conversion is done on the fly while the palette in RAM is sent to VRAM, by only keeping the two most significant bits of each colour composant (red, green, blue) from the GG colour format : convert_GG_palette: ld b,$20 ; hl = GG_pal_address, c = VDP_DATA ($BE) c_GG_pal_loop: ld a,(hl) inc hl srl a ; RRAs should be faster ? srl a and %00110011 ld d,a srl a srl a or d and %00001111 ld d,a ld a,(hl) inc hl and %00001100 add a,a add a,a or d out (c),a djnz c_GG_pal_loop ret Conversion de palette GG vers SMS.jpg (29.28 KB) Tempo JR - IPS Patch.zip (448.26 KB)

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Thu Apr 24, 2014 3:24 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	That's awesome, thanks for posting and the detailed description!

Wesker Joined: 14 Jul 2008 Posts: 159	Posted: Fri Apr 25, 2014 1:47 am
Wesker Joined: 14 Jul 2008 Posts: 159	Nice one vingazole! A sweet conversion effort as always. The reapdating of the cheat codes commands that you did in order to have "1" as "GG Start" in the title screen is a good choice indeed.

vingazole Joined: 20 Feb 2008 Posts: 118 Location: Saintes, France	Posted: Fri Apr 25, 2014 1:32 pm
	Thank you guys :D Bust-A-Move : - accesses to the Game Gear ports removed - GG [Start] button replaced by the Master System button [2] - colours automatically converted (except for the orange, that I had to adjust - it was too close to the red) - background tiles copied to enlarge the display Bust-A-Move (IPS Patch).zip (283.12 KB)

ichigobankai Joined: 04 Jul 2010 Posts: 544 Location: Angers, France	Posted: Fri Apr 25, 2014 2:56 pm
	Very very nice & professionnal, as always ;) On Bust-a-move, if you press "Pause" button, "ERROR" is appearing on screen. BUST-A-MOVE [GG to SMS]003 - copie.png (4.36 KB)

vingazole Joined: 20 Feb 2008 Posts: 118 Location: Saintes, France	Posted: Fri Apr 25, 2014 7:29 pm
	Thank you my friend :) Oops, I forgot to put a 'RETN' at $66... I'll fix that later ;)

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Sun Apr 27, 2014 2:25 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Thanks! I updated my page with the new patches. Once SMS Power creates their patch page, I'll just link to theirs instead. http://retrorgb.com/gamegearongenesis.html

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Sun Apr 27, 2014 7:44 pm
	I'll see if I can get something set up on the site for these. We might want to deal with hacks and modifications in general, rather than just GG ports. We are also interested in holding older versions for historical purposes.

Revo Guest	Posted: Sun Apr 27, 2014 10:32 pm
Revo Guest	Nice page, but Galaga 2 is not from me but also from Vingazole ;) edit: and you forgot GG Shinobi from Vingazole too. edit2: I will try to give you soon some palette update. For Tempo Jr I need to work on the palette of the stage 2, but I already done stage 1, others stages don't need update 'cause they are already good. For Puzzle Bobble just 2 or 3 colors from the backround need to be change. I also like to change the palette from the first Sega screen (the one from the game of course, not from the BIOS) to all black, like that you just have a black screen for 2 secondes and don't have to see 2 times the Sega logo.

vingazole Joined: 20 Feb 2008 Posts: 118 Location: Saintes, France	Posted: Mon Apr 28, 2014 9:24 am
	GG Shinobi - accesses to the Game Gear ports removed - GG [Start] button replaced by the [UP]+[1] combination - sprites clipping removed - player's life bar moved to the top left corner of the screen - GG palettes automatically converted to the SMS palettes format + manual colour adjustements - NMI (Pause interrupt) disabled ;) NB. many graphical glitches remain (eg: the fight upon the airplane^^) but the game is playable... GG Shinobi - IPS Patch.zip (356.18 KB)

Wesker Joined: 14 Jul 2008 Posts: 159	Posted: Mon Apr 28, 2014 12:27 pm
Wesker Joined: 14 Jul 2008 Posts: 159	vingazole wrote Thank you guys :D Bust-A-Move : - accesses to the Game Gear ports removed - GG [Start] button replaced by the Master System button [2] - colours automatically converted (except for the orange, that I had to adjust - it was too close to the red) - background tiles copied to enlarge the display Excellent! This is probably one of the better conversions as of now. It's pretty much complete from what I have seen (no graphical glitches so far) and I didn't expect that mockup picture I did by enlarging the background tiles would turn up to reality! I suppose it's very complicated to hack the 1p vs 2p mode so it could be functional on the Master System, right? That would be the only remaining thing to make this perfect. vingazole wrote GG Shinobi - accesses to the Game Gear ports removed - GG [Start] button replaced by the [UP]+[1] combination - sprites clipping removed - player's life bar moved to the top left corner of the screen - GG palettes automatically converted to the SMS palettes format + manual colour adjustements - NMI (Pause interrupt) disabled ;) NB. many graphical glitches remain (eg: the fight upon the airplane^^) but the game is playable... This is not a new version, right? I mean, it's like the last version I tested. And you know how much I like it already. ;) RetroRGB wrote Thanks! I updated my page with the new patches. Once SMS Power creates their patch page, I'll just link to theirs instead. http://retrorgb.com/gamegearongenesis.html Good, but for Sonic the Hedgehog Triple Trouble instead of the last version that was done in Sonic Retro maybe you should add the fix that was done afterwards by vingazole. Same goes for GG Aleste II / Power Strike II.

Bock Site Admin Joined: 08 Jul 2001 Posts: 8699 Location: Paris, France	Posted: Mon Apr 28, 2014 1:07 pm
	My guess is that most games uses the Gear-to-gear to share inputs and thus a hack to allow for 2 local players isn't out of reach for the type of games where both players are sharing the display. It isn't the case for Puzzle Bobble unfortunately. Very hard.

Wesker Joined: 14 Jul 2008 Posts: 159	Posted: Mon Apr 28, 2014 1:56 pm
Wesker Joined: 14 Jul 2008 Posts: 159	Bock wrote My guess is that most games uses the Gear-to-gear to share inputs and thus a hack to allow for 2 local players isn't out of reach for the type of games where both players are sharing the display. It isn't the case for Puzzle Bobble unfortunately. Very hard. Oh, I thought the 1p vs 2p mode was like the 1p vs Computer mode, where there's actually a shared display with your CPU rival. Then I guess we are out of luck unfortunately. A case where it could be possible then would be with hypothetical GG2SMS conversions of the first two Streets of Rage games. In both cases the Game Gear versions are different games to the Master System versions and do allow 2 players mode with shared display (unfortunately the Master System versions are 1 player only).

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Mon Apr 28, 2014 3:26 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Revo wrote Nice page, but Galaga 2 is not from me but also from Vingazole ;) Thank you. I corrected it. Wesker wrote Good, but for Sonic the Hedgehog Triple Trouble instead of the last version that was done in Sonic Retro maybe you should add the fix that was done afterwards by vingazole. Same goes for GG Aleste II / Power Strike II. I'll update the page with new links as Vingazole uploads them. No rush, I'll just update whenever he posts. Also, I'd plan on keeping versions from each developer.

BKK Joined: 01 May 2011 Posts: 476	Posted: Mon Apr 28, 2014 4:19 pm
BKK Joined: 01 May 2011 Posts: 476	I guess theoretically it could be hacked to make use of the Mark III link cable. Although there wouldn't be much of an audience for such a hack, outside of someone designing a SMS equivalent. Edit: Maybe it would be more practical to hack it to use the Zero Tolerance link cable on a Mega Drive.

nextvolume Joined: 17 Jul 2010 Posts: 13	Posted: Mon May 05, 2014 10:36 am
nextvolume Joined: 17 Jul 2010 Posts: 13	It's been a while since the last time I heard about GG2SMS conversions, it's nice that they are being discussed again. By the way, I am the author of *Sonic Drift 2 SMS, that I made almost five years ago, time passes just too fast. Alright, yesterday I was playing a bit, so here is Sonic Labyrinth SMS Release v1* It comes as an IPS patch and with source code for the code snippets, see the attachment. From the readme: Quote ... This is the first release of this patch that allows you to play Sonic Labyrinth, a game released in 1995 by SEGA for the Game Gear, on your Master System. The game works well, and is playable, but the screen except for the portion at the center that is what the Game Gear screen used to be, can get very scrambled. As said before, that doesn't affect the game's playability, but can be aesthetically unpleasing; this bug may be fixed in a later release of this patch. The Game Gear START button is mapped to Button 1 on the Master System, and does what START used to do on the Game Gear (pause, etc.) The patch applies to a ROM image of the Sonic Labyrinth cartridge; as far as I'm aware only one version exists of it, and it was released in all territories (Japan, Europe and USA). ... I don't have any flash cartridge at the moment, so I have not been able to test this on real hardware. I tested it on MEKA and Kega Fusion. It would be really nice if someone could test the patched game on real hardware. @RetroRGB: thank you for bringing up discussion about this, again. Also, nextvolume is my nickname, I used that other nickname just for a brief while. Enjoy! slabyrinth-sms-v1.zip (5.3 KB) Sonic Labyrinth SMS Release v1

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Mon May 05, 2014 12:56 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Thanks so much for uploading! I just tested Sonic Labyrinth on an SMS and it works very well. I also tested it on Kega Fusion and both look identical, so I can assume whatever you saw in Kega is exactly what I'm seeing. By the way, I'd never played that game before. It seems pretty neat...I'm really looking forward to trying it out now. I have added this to the GG on SMS page and updated your nickname on both patches to nextvolume. Do you have a website or page you'd like me to link back to? I want to promote everyone's work as much as possible and hope more people will join in! Also, would you happen to have the IPS patch for Sonic Drift 2? If not, no big deal, but I was hoping to get all of these patches in ips form.

nextvolume Joined: 17 Jul 2010 Posts: 13	Posted: Mon May 05, 2014 2:24 pm
nextvolume Joined: 17 Jul 2010 Posts: 13	Thank you for testing it on real hardware. I have just made IPS patches for both Sonic Drift 2 and Sonic Triple Trouble and they are attached to this post. I do not have a page about GG2SMS projects on my website, so you can just link to the index page. My website is called Unhaut and the link to can be found by clicking the home page icon below this post (my post count does not allow me to post links, yet). EDIT: @RetroRGB: Sonic Triple Trouble is solely Glitch's work, not mine ;) SonicTripleTrouble_0.4.zip (16.64 KB) IPS patch for Glitch's Sonic Triple Trouble SMS 0.4 sdrift2_sms_b2.zip (1.58 KB) IPS patch for Sonic Drift 2 SMS B2

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Mon May 05, 2014 3:08 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Awesome, thank you. Everything's updated. All I need now are the patches for Galga 2 / Galga 91'. Also, are there any other conversions out there I haven't stumbled upon yet? I'm sorry if this is a stupid question, but is there a way to allow these games to access parts of the Genesis? Specifically the Start button and stereo sound? I assume no, since in order to play these games on a Genesis, it's in SMS mode, but I thought I'd ask anyway. Thanks again!

Wesker Joined: 14 Jul 2008 Posts: 159	Posted: Mon May 05, 2014 6:22 pm
Wesker Joined: 14 Jul 2008 Posts: 159	I also tested Sonic Labyrinth on hardware console, nice job nextvolume. It's always good to have new conversions for Sonic games since Sonic Triple Trouble and Sonic Drift 2 (I remember them being posted in the Sonic Retro forums). This is a good first step, but the game suffers a bit with the expanded resolution (especially during gameplay, where limited drawing distance can be a little bit confusing), even more than Sonic Drift 2. Aside from that, maybe some people will tell you to have Game Gear "Start" button on "2" rather than "1", although I deem it fine in "1". This game benefits from having both Game Gear "1" and "2" buttons doing the same function (spin dash) so it isn't necessary to place the Game Gear "Start" button in button combinations or somewhere else. Regarding Sonic Triple Trouble, vingazole did some fixes to the last version done by Glitch. That would be the ideal ips patch to have.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Tue May 06, 2014 6:29 am
	It is possible to use a Genesis controller in SMS mode, but it requires a bit of programming work to replace the controller reading code. I'm not sure how easy it would then be to also be SMS compatible.

Tom Joined: 16 May 2002 Posts: 1375 Location: italy	Posted: Tue May 06, 2014 12:37 pm
Tom Joined: 16 May 2002 Posts: 1375 Location: italy	RetroRGB wrote is there a way to allow these games to access parts of the Genesis? Specifically the Start button and stereo sound? The "stereo sound", in a Genesis, is limited to the YM2612 and not to the PSG, since the Game Gear is the only console of the bunch which can pan the PSG as well. I'm not sure if you can take control of the YM2612 in SMS mode, but I know you can mod your Genesis to install a YM2413. Sadly, iirc, the YM2413 isn't stereo, either.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Tue May 06, 2014 11:02 pm
	I had a go at adding something to the site, here's a first try: www.smspower.org/Hacks/BerlinNoKabe-GG-GG2SMS It needs some work, the index is crappy and it isn't integrated with the game page yet, but that's the sort of thing I'm going for.

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Wed May 07, 2014 4:10 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Maxim wrote I had a go at adding something to the site, here's a first try: The game page looks great.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Wed May 07, 2014 8:51 pm
	Do you fancy adding pages? You have edit permissions now, have a play and see how you get on. Make sure to take the main Games page name and then append "-GG2SMS" to the URL. Bust-a-Move is not quite finished as I didn't have the tools to make screenshots on my phone.

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Wed May 07, 2014 8:52 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Maxim wrote Do you fancy adding pages? You have edit permissions now, have a play and see how you get on. Make sure to take the main Games page name and then append "-GG2SMS" to the URL. Bust-a-Move is not quite finished as I didn't have the tools to make screenshots on my phone. Sure. I'll give it a try sometime before the end of the week.

gvx32 Joined: 17 Sep 2013 Posts: 130 Location: Gravataí, RS, Brazil	Posted: Wed May 07, 2014 9:33 pm
	Maxim wrote It is possible to use a Genesis controller in SMS mode, but it requires a bit of programming work to replace the controller reading code. I'm not sure how easy it would then be to also be SMS compatible. Its fairly easy, with the genesis controller you have to read the controls twice, then you just have to check on the second read if the left and right buttons are pressed (both on 0). if so, than you are reading from a genesis controller, since it's impossible to have both buttons pressed. With the Genesis controller those bits always are on 0 on the second reading. I am working on a project thats use the Genesis controller. In my case, I test the controller before the game begins, and set the proper routine to do the readings after that, but it's easy to convert the megaDrive reading rotine to test the controller each reading. .define Th.hi $F5 .define Th.lo $D5 .macro testController ld a, Th.hi out ($3F), a push hl pop hl ld a, Th.lo out ($3F), a push hl pop hl in a, ($DC) and %00001100 ld hl, readMasterSystemController jr nz, isMasterSystem isMegaDrive: ld a, Th.hi out ($3F), a ld hl, readMegaDriveController isMasterSystem: ld (readControlsFunction), hl .endm .section "readMegaDriveController" free readMegaDriveController: ;the Th.hi out was already done in the end of the previous reading ; TH = 1 : ?1CBRLDU 3-button pad return value in a, ($DC) or $c0 ld b, a ; TH = 0 : ?0SA00DU 3-button pad return value ld a, Th.lo out ($3F), a ;map pause to start button ld hl, pauseButtonPressed ld a, (hl) and b ld b, a ld (hl), $ff in a, ($DC) rlca rlca or $3f and b ld (noHoldedKeys), a ;Set TH hi for the next pass ld a, Th.hi out ($3F), a jp endControlReading .ends It's also worth note the necessary delays between the outs($3f) and the readings. In the test routine they are just the push/pop hl. On the reading routine, the delays are the time between two readings for the first reading and the pause to start mapping in the second reading. Is good also to check this http://www.smspower.org/Homebrew/MegaDrive6ButtonControllerTest-SMS from Charles MacDonald. Was from that demo that I created my routines.

Tom Joined: 16 May 2002 Posts: 1375 Location: italy	Posted: Thu May 08, 2014 2:44 am
Tom Joined: 16 May 2002 Posts: 1375 Location: italy	gvx32 wrote it's impossible to have both [left and right] buttons pressed. Well, most emulators allow for that, and it's especially useful for TAS purposes.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Thu May 08, 2014 7:42 am
	So it turns out that there's a better format than IPS - I hadn't checked since about 2003 - so I suggest we should go for UPS patches from now on. This gets us more reliable expansion, checksums on the input, and reversibility. I'll fix up the translation patches we have. Software here: www.romhacking.net/utilities/519/

gvx32 Joined: 17 Sep 2013 Posts: 130 Location: Gravataí, RS, Brazil	Posted: Thu May 08, 2014 1:50 pm
	Tom wrote gvx32 wrote it's impossible to have both [left and right] buttons pressed. Well, most emulators allow for that, and it's especially useful for TAS purposes. Well, I was just thinking in real hardware. But it will work with a few adjustments. 1) if on the second reading you dont get a 00 on the left and right positions, you already know that its not a genesis controller, so there's no need to test anymore 2) if you get a 00 on the second reading, but also get on the first reading, than you actually have both buttons pressed, so, in this case, you can't take any conclusions 3) if you have 00 on the second reading, but not on the first reading than you most likely have a genesis controller. 4) there's another test you can make. that's is to verify if the buttons status are different between the first and second reading. If so, you know you most likely have a genesis controller. Well, none of this is 100% conclusive, but apply all of then is not that hard and they are pretty good. And if you verify this before the game begins, you will have a wrong anwser only if the user is actually trying to break the test.

KingMike Joined: 14 Oct 2008 Posts: 525	Posted: Thu May 08, 2014 4:10 pm
KingMike Joined: 14 Oct 2008 Posts: 525	Maxim wrote So it turns out that there's a better format than IPS - I hadn't checked since about 2003 - so I suggest we should go for UPS patches from now on. This gets us more reliable expansion, checksums on the input, and reversibility. I'll fix up the translation patches we have. Software here: www.romhacking.net/utilities/519/ Actually the author of the UPS format quickly replaced it with another format called BPS. He insists others follow (the only advantage I recall UPS had was reversibility, which he admits has pretty limited practical use).

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Thu May 08, 2014 6:47 pm
	sigh There seems not to be a decent way to keep track of this stuff. BPS seems less well-supported than UPS.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Sat May 10, 2014 1:03 pm
	OK, I fixed some remaining issues with the hacks section and hooked it into the rest of the site - so, for example, there are links between http://www.smspower.org/Hacks/BerlinNoKabe-GG-GG2SMS and http://www.smspower.org/Games/BerlinNoKabe-GG . I also created BPS versions of the patches; I decided to go with both IPS and BPS in the same download, and the help page points out the advantages of BPS. Now all we need are more added to the site!

Revo Guest	Posted: Sun May 11, 2014 6:36 pm
Revo Guest	Hey, here 2 conversions who are not finish at all but that can be play. (I just adapt the conversion palette code of Vingazole and remap the start button). Start is configure on button down of controler 2. Should work on real hardware like I removed the GG ports and fixed the checksum. The games are Captain America and the Avengers and Super Return of the Jedi. Enjoy. Stuff to do for both game: - Take of the garbage screen on menus. - Put black on the right of the screen ('cause you can see previous decor but sometimes it's good, there is maybe a way to fix that). - Put black on the left of the screen like Vingazole did for Tempo Jr. - Move the life bar. - Take off the Sega first sreen (easy for me). coaata&srotj.zip (463.49 KB)

Revo Guest	Posted: Mon May 12, 2014 6:41 pm
Revo Guest	Today, a funny game for you guys. Ganbare Gorby! Start configure on button down of controler 2. Just found out that there is a European version of this game, call Factory Panic. I will maybe give a look. Also, would be great if I can configure start on button 1 of controler 1. Enjoy. Ganbare Gorby! (J).zip (62.1 KB)

Wesker Joined: 14 Jul 2008 Posts: 159	Posted: Mon May 12, 2014 7:03 pm
Wesker Joined: 14 Jul 2008 Posts: 159	The conversion trend from the Game Gear to the Master System is now having a boost like it never had before. This is really good for the Master System games library. But I wouldn't remove the Sega screens from the games if you ask me, just because that was the usual procedure Sega did with their Master System releases. In fact, there are several official Master System games which do keep the Sega screens, like the Streets of Rage games.

Revo Guest	Posted: Tue May 13, 2014 7:11 pm Last edited by Revo on Wed Mar 02, 2016 7:38 am; edited 1 time in total
Revo Guest	Phantasy Star Adventure So far my best conversion. The rom will not be public yet. http://www.slevinproduction.com/mastersystem/

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Tue May 13, 2014 7:39 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Revo, thanks for all the uploads! Do you have patches, or just the roms? I uploaded just the roms for now, as well as a link to your Phantasy Star Adventure page.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Tue May 13, 2014 9:10 pm
	It's trivial to create patches and somewhat more legal to distribute them.

Wesker Joined: 14 Jul 2008 Posts: 159	Posted: Tue May 13, 2014 9:17 pm
Wesker Joined: 14 Jul 2008 Posts: 159	Revo wrote Phantasy Star Adventure So far my best conversion. The rom will not be public yet. http://www.slevinproduction.com/mastersystem/phantasystaradventure/ So you are definitely doing a lot of conversions. How is the Fatal Fury Special conversion going?

Revo Guest	Posted: Wed May 14, 2014 5:00 pm Last edited by Revo on Wed May 14, 2014 5:09 pm; edited 1 time in total
Revo Guest	I don't know how to do IPS patch sorry, and I don't like this kind of stuff. I'm not working on Fatal Fury at the moment 'cause Vingazole want to work on it. I've been working on The Itchy & Scratchy Game and I'm pretty sure that the game was developed for Master System on the first place and then adapted for the Game Gear. 'Cause of that, my conversion don't seems like a GG conversion but like a real Master System game, no glitch at all, it's really nice. I just need to ask 2 things to Vingazole for the conversion to be finish: - You can do Pause during the game, I would like this action to be configure on the button pause of the Master System (It's configure on button down controler 2 right know but the pause stay just 1 sec, strange shit...). - Moving the 2 life bars on the corners. For this game I didn't adapt the palette code of Vingazole, but I changed all the palettes colour by colour (it's actually one of the only game you can do that without glith). The rom will not be public 'cause I want some exclusivities for my website/shop. To finish, I'm glad to present you my conversion of Buster Ball. Start button map on button down controler 2. No glitch until the first goal (after you have nice garbage screen around the screen; there is probably a way to fix that). Ready to work on real hardware. Download below. Enjoy. Buster Ball (J).zip (53.89 KB)

Revo Guest	Posted: Wed May 14, 2014 5:08 pm
Revo Guest	Thank you RetroRGB for the update of your page (the link of my shop on it is much appreciate). You should edit your first post to put your link on it ;)

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Wed May 14, 2014 8:12 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Revo wrote Thank you RetroRGB for the update of your page (the link of my shop on it is much appreciate). No problem! I really want to promote everyone's work, as a thanks for all the effort. You guys are all making Game Gear fans very happy! Revo wrote You should edit your first post to put your link on it ;) Good idea. I updated it with both pages and will remove mine after the SMSPower page is complete. Revo wrote To finish, I'm glad to present you my conversion of Buster Ball. Start button map on button down controler 2. No glitch until the first goal (after you have nice garbage screen around the screen; there is probably a way to fix that). Ready to work on real hardware. Download below. Enjoy. Thank you, added.

ichigobankai Joined: 04 Jul 2010 Posts: 544 Location: Angers, France	Posted: Wed May 14, 2014 8:47 pm
	Revo wrote I don't know how to do IPS patch sorry, and I don't like this kind of stuff. To make an IPS patch, download Lunar IPS (http://fusoya.eludevisibility.org/lips/) and the original rom. 2 clicks and that's all.

RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	Posted: Wed May 14, 2014 8:51 pm
RetroRGB Joined: 23 Apr 2014 Posts: 131 Location: NYC	ichigobankai wrote To make an IPS patch, download Lunar IPS (http://fusoya.eludevisibility.org/lips/) and the original rom. 2 clicks and that's all. Wow, that's embarrassing. In all the years of using LunarIPS, I never realized that's all you had to do. I'll get on that tomorrow and change all the rom-only downloads to patches. Thanks for the heads up.

ichigobankai Joined: 04 Jul 2010 Posts: 544 Location: Angers, France	Posted: Wed May 14, 2014 9:21 pm
	You need the original unmodified rom and your modified rom to make the patch, and click on the "Create IPS patch" button ^_^ lipsnew.gif (4.71 KB)

Wesker Joined: 14 Jul 2008 Posts: 159	Posted: Thu May 15, 2014 2:39 am
Wesker Joined: 14 Jul 2008 Posts: 159	Revo wrote To finish, I'm glad to present you my conversion of Buster Ball. Start button map on button down controler 2. No glitch until the first goal (after you have nice garbage screen around the screen; there is probably a way to fix that). Ready to work on real hardware. Download below. Enjoy. What's the way to restore the introductory Sega screen? It doesn't seem to be removed, but only turned into a black screen somehow. I would like to get it back as it was.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Thu May 15, 2014 7:52 am
	If it's there, but black, you can try editing the palette in Meka while frozen at that point; if that works, you can try to find where the palette is set and see if you can edit it. It might need some extra code.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14875 Location: London	Posted: Thu May 15, 2014 8:20 am
	To map the pause button, you need to write some code at address $66. This is executed when the pause button is pressed. You should make it set a flag in memory, maybe use the address where the original code put the start button status. However, this will never unset the flag, so you need to alter the code which reads the flag so it clears it after reading. Game Gear games use offset $66 for the Gear to Gear link. If the game supports multi player, you will find existing code there which you can overwrite with care. Otherwise you'll find nothing there and you'll need to find space for the extra code.

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