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Light Phaser player 2 hacks (was: SMS Programming Request)
Post Posted: Sat May 23, 2015 8:45 am
Last edited by segasonicfan on Sun May 24, 2015 4:38 pm; edited 2 times in total
Hi all,
I have a slightly unusual request: I would like to ask the community if anyone could reprogram the lightgun games on SMS to run off a second player controller port instead of P1. The reason for this is that the Game Gear supports the light gun, but only on the second port. I tested it myself today (with a GGTV out and a CRT obviously) and it works!

So far, Safari Hunt, Wanted, Gangster Town and Rescue Mission have been patched by Calindro and are tested and working !

The remaining games to patch are:


Assault City (also compatible with standard control pad)
Laser Ghost (also compatible with standard control pad)
Marksman Shooting
Missile Defense 3-D
Operation: Wolf
Rambo III
Shooting Gallery
Space Gun
Trap Shooting


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Post Posted: Sat May 23, 2015 8:59 am
Should be fairly easy, but did you confirm the gun really works, as in the game registers a hit related to where the gun is pointing?
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Post Posted: Sat May 23, 2015 10:45 am
Maxim wrote
Should be fairly easy, but did you confirm the gun really works, as in the game registers a hit related to where the gun is pointing?


Not yet, but then again my gun is really finicky as these games are super touchy when it comes to brightness and contrast. Even on my regular SMS it took a lot of tweaking to get Rescue Mission to work. With a GGTV it will take even more tweaking. Gangster Town is the only game I can test for this, correct?

Safari Hunt is by FAR the easiest game to test with a light phaser - it detected on my stock SMS really well. Any chance you (or someone) could just program that one game to work with a 2P input? Then I will be able to know for sure. In the meantime I'll keep messing with the brightness setting. But it seems its seeing the gun at least.

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Post Posted: Sat May 23, 2015 1:12 pm
With the attached patch it will read port B TH and TL also for the first player.

Edit:
And the other one swaps inputs for both players.

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Post Posted: Sat May 23, 2015 7:45 pm
Calindro wrote
With the attached patch it will read port B TH and TL also for the first player.

Edit:
And the other one swaps inputs for both players.


Very nice of you to do this! However, Safari Hunt was the game I was hoping to have patched ;) Any chance you could do that one? It registers the lightgun the best of any game I've tried and would be hugely appreciated! :)

I'll give this one a go anyway though and see what I can adjust.

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Post Posted: Sat May 23, 2015 8:44 pm
Oh sorry, I've attached a patch for Safari Hunt

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Post Posted: Sat May 23, 2015 9:22 pm
IT WORKS!!!

So the "Master Gear Cable" didn't have +5v (the only input missing). Once I wired in my own 2P port plug with TH, TL, +5v, and GND, the light phaser worked like a dream :D

But words are cheap so, here's a video!
.be

Now I'll test that Safari Hunt patch- thanks!
I'm dying for a Rescue Mission patch.....that's one of my top 10 SMS games ^_^
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Post Posted: Sat May 23, 2015 9:24 pm
One of these years I'll make a light phaser test program that shows you what the gun saw, and lets you choose various flash colours to experiment with the brightness. I think it would clear up a lot of the confusion around getting games to work...
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Post Posted: Sat May 23, 2015 9:33 pm
Maxim wrote
One of these years I'll make a light phaser test program that shows you what the gun saw, and lets you choose various flash colours to experiment with the brightness. I think it would clear up a lot of the confusion around getting games to work...


That would be terrific. I hate having to mess with the settings blindly.

So the Safari Hunt patch works like a charm, thanks Calindro!
The Gangster Town patches are non-working at the moment, the phaser is detected but it can only make shots up and down what appears to be a single line on the screen. i.e. I can't make shots on the left or right side of the screen.

I'm so excited to have these games reprogrammed for GG use. This is a dream come true ^_^
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Post Posted: Sun May 24, 2015 2:09 am
Ive found light guns to be rather picky too. Strangely some consoles seem better than others. If i use the same tv with same settings, same gun, same game and same leads etc. but different console it goes from barley working to working better than ever. Not sure why.. can only assume aging caps in the console?
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Post Posted: Sun May 24, 2015 6:38 am
wasup wrote
Ive found light guns to be rather picky too. Strangely some consoles seem better than others. If i use the same tv with same settings, same gun, same game and same leads etc. but different console it goes from barley working to working better than ever. Not sure why.. can only assume aging caps in the console?


Yeah, I had a similar issue. Maybe the capacitors on the analog video output (which affects brightness) changed from age? I thought my phaser was going bad but I tried it on a friends SMS and it was working well.

Funny fact: Played Safari Hunt on my GG today and it was the BEST my light phaser has ever worked! I got to level 21 and turned off the system only because my arm was hurting, lols.

but we're getting side tracked: now who here is willing to be a hero and reprogram Rescue Mission and the other Light Phaser games for 2P and make the Game Gear the ultimate SMS ?

:D
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Post Posted: Sun May 24, 2015 1:56 pm
I've attached patches for Wanted and Rescue Mission.

Edit: And I've fixed the issue with Gangster Town.
WantedP2.ips (50 B)

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Post Posted: Sun May 24, 2015 4:35 pm
Calindro, you are the best!!
:D :D :D
I just played all 3 of these and they appear to work flawlessly! (once I crank up the brightness, heheh).

has anyone else found that lightgun games don't work as well in RGB? They seem to love composite...not sure if it's a setting thing or something else. Anyway, I'm happy to play these any way I can!
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Post Posted: Sun May 24, 2015 7:24 pm
I've attached patches for the rest of the games except Spacegun. I'm working on it right now.

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Post Posted: Sun May 24, 2015 8:21 pm
Last edited by Maxim on Sun May 24, 2015 8:41 pm; edited 1 time in total
I'm adding them to http://www.smspower.org/Hacks/ControllerPatches now. Which are the targets for Marksman Shooting, Trap Shooting and Safari Hunt above? Each is in two different games.
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Post Posted: Sun May 24, 2015 8:29 pm
I'm curious about if you did a P1/P2 swap for Paddle Control/Sports Pad games. Since they have region detection and such, would they function properly?

It's been a few years since I did any work on SMS/GG related programming so I have no idea -- but it was something I was curious about. Any ideas anyone?
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Post Posted: Sun May 24, 2015 8:43 pm
Region detection wouldn't interact with a player 1/2 hack.
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Post Posted: Sun May 24, 2015 8:53 pm
I've attached a patch for Spacegun but I'm not sure if it works properly.

Maxim wrote
I'm adding them to http://www.smspower.org/Hacks/ControllerPatches now. Which are the targets for Marksman Shooting, Trap Shooting and Safari Hunt above? Each is in two different games.

Trap Shooting is for "Marksman Shooting / Trap Shooting / Safari Hunt" (e8215c2e)
Marksman Shooting is for "Marksman Shooting & Trap Shooting" (e8ea842c)
Safari Hunt is for "Hang On / Safari Hunt" (e167a561)

Thanks for adding them. I was about to ask if they should be added somewhere. :)
Spacegun P2.ips (86 B)

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Post Posted: Sun May 24, 2015 8:58 pm
Do they cover all the games in the multi-games or just the named one? (Hang On & Safari Hunt aside... let's not get into a light gun patch for Hang On...)
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Post Posted: Sun May 24, 2015 9:15 pm
Maxim wrote
Do they cover all the games in the multi-games or just the named one? (Hang On & Safari Hunt aside... let's not get into a light gun patch for Hang On...)

Each of them works on each of the games. But I didn't try Hang On. ;)

olaf wrote
I'm curious about if you did a P1/P2 swap for Paddle Control/Sports Pad games. Since they have region detection and such, would they function properly?

It's been a few years since I did any work on SMS/GG related programming so I have no idea -- but it was something I was curious about. Any ideas anyone?

I didn't swap players for paddle control/sports pad games, yet. Is there any need for that?
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Post Posted: Sun May 24, 2015 10:26 pm
Well, I think some are only 1 Player but I may be wrong. I was just wondering.
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Post Posted: Sun May 24, 2015 11:38 pm
olaf wrote
Well, I think some are only 1 Player but I may be wrong. I was just wondering.


I think you misunderstand the purpose of this thread. Only games that make use of the TH signal are incompatible to use on an unmodded Game Gear. The TH signal is available internally, but only for the 2P port. So the games are reprogrammed to make this now the1P port (software-wise).

As far as I know, only light gun games use the TH line. Does anyone know of anything else that would make use of it?

and Calindro is a godsend! I just have to say thank you once more! I am eternally in your debt sir, let me know if I can be of any help for hardware hacks or repairs in the future!

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Post Posted: Mon May 25, 2015 12:18 am
Yeah, I understood that part. I was just wondering if the Paddle Control and the game side of things would have any problems with region detection. You can't play Alex Kidd's BMX game for example without a Paddle Control, so I'd be interested in seeing how it faired on a GG.
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Post Posted: Mon May 25, 2015 12:54 am
olaf wrote
Yeah, I understood that part. I was just wondering if the Paddle Control and the game side of things would have any problems with region detection. You can't play Alex Kidd's BMX game for example without a Paddle Control, so I'd be interested in seeing how it faired on a GG.


The GG works just like a regular sms minus TH for player one. so if u install a port for the paddle controller to plug in, it will work fine since it uses buttons 1 & 2:
http://www.smspower.org/Development/Paddle

i have documented elsewhere how to change regions on the Game Gear from JP to PAL to US. with these phaser hacks and wasups 3D board hack, the GG can be modded to be a full SMS in every way except for 2 players simultaneous lightgun support on Gangster Town. Pretty great I think :)
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Post Posted: Mon May 25, 2015 11:03 pm
Last edited by enik on Tue May 26, 2015 12:11 am; edited 2 times in total
segasonicfan wrote
So the "Master Gear Cable" didn't have +5v (the only input missing). Once I wired in my own 2P port plug with TH, TL, +5v, and GND, the light phaser worked like a dream :D


Are you sure the missing line was +5v instead TH? Are your cable an official product?

olaf wrote
I'm curious about if you did a P1/P2 swap for Paddle Control/Sports Pad games. Since they have region detection and such, would they function properly?


I think it's a similar situation to what happens with the SMS: if you have a Japanese GG, paddle games would work, else you would need yet another hack, like the one done before by segasonicfan to play Pop Breaker.

Calindro wrote
I didn't swap players for paddle control/sports pad games, yet. Is there any need for that?


I guess he don't want to modify the GG hardware to play paddle games and the game for the Japanese Sports Pad. For US Sports Pad games, he may need a custom cable, as happened to segasonicfan, and those games also use TH as output, what haven't been tested yet, but probably works.

segasonicfan wrote
The world's first light phaser playing on Sega Game Gear! (as far as I know..)


Congratulations segasonicfan and Calindro!
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Post Posted: Tue May 26, 2015 12:06 am
Quote
Are you sure the missing line was +5v instead TH? Are your cable an official product?

No, it's not an official product. It was a 3rd party cable made for plugging SMS controller into the EXT out of a Game Gear. yes, I am 100% sure it has TH and is missing +5v. Strange, I know.
Quote

I guess he don't want to modify the GG hardware to play paddle games and the game for the Japanese Sports Pad. For US Sports Pad games, he may need a custom cable, as happened to segasonicfan, and those games also use TH as output, what haven't been tested yet, but probably works.

from the wiki:
"The "export paddle" would appear (based on examining code in Out Run 3D) to not have an internal clock to toggle which nibble is returned; instead, the TH line is configured as an output from the console and is used to select which nibble is read. The code must then include a delay to allow the paddle hardware to respond, and check that the TR value has changed. This operation seems to be similar to how the Sports Pad works. "

Ah Ok, so they do use TH. I didn't know that. Can someone tell me a list of games that use the Sports Pad? If Calindro is willing, it would be wonderful to have them patched and thus, have the GG be fully compatible with all SMS games :)

So far there are these US games:
Great Ice Hockey
Sports Pad Football
Sports Pad Soccer

and these JP games:

BMX Trial: Alex Kidd (required)
Galactic Protector (required)
Megumi Rescue (required)
OutRun (optional)
Super Racing (optional)
Woody Pop: Shinjinrui no Block Kuzugi (required)

Does Outrun 3D require it? I'm confused at the mention above. So from what I understand, with a region switch to JP and a Japanese paddle you could make it work with a simple port but if you want to use the more common US sports paddle, the roms would need to be patched for player 2 > player 1.
Some more interesting info here:
http://www.smspower.org/forums/14529-SportsPadControllerSomewhatUsableWithPaddle...

lols at how confusing this is. and looking at ebay, the JP paddle runs $140++ nuts.

Quote
Congratulations segasonicfan and Calindro!

Thanks :)

EDIT: It looks like the "sports pad" and the "export paddle" are different controllers, heh. So basically if you use a Japanese paddle and put the GG in JP mode it should work fine. I might purchase this, which would work with everything:

http://www.raphnet-tech.com/products/brd_sms_paddle/index_fr.php
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Post Posted: Tue May 26, 2015 12:55 am
segasonicfan wrote

from the wiki:
"The "export paddle" would appear (based on examining code in Out Run 3D) to not have an internal clock to toggle which nibble is returned; instead, the TH line is configured as an output from the console and is used to select which nibble is read. The code must then include a delay to allow the paddle hardware to respond, and check that the TR value has changed. This operation seems to be similar to how the Sports Pad works. "

I was talking about the official Paddle Control, released in Japan, that works only when the games designed for it detect the system region as Japanese. Those games, when detect the region as Export, switch to another mode, that is incompatible with the original Paddle, that's why there's a description of an hypothetical "export paddle", that wasn't released. However, that incompatible mode used for Export systems is similar "to how the Sports Pad works" (at least the US Sports Pad), that's why some games are "somewhat usable" as you saw at the page you linked below:

segasonicfan wrote

So from what I understand, with a region switch to JP and a Japanese paddle you could make it work with a simple port but if you want to use the more common US sports paddle, the roms would need to be patched for player 2 > player 1.
Some more interesting info here:
http://www.smspower.org/forums/14529-SportsPadControllerSomewhatUsableWithPaddle...


Right for the Paddle, and the switch isn't required if there's the possibility to patch the ROMs to always detect the system as JP. Keep in mind there are three devices involved: Paddle Control and two versions of the Sports Pad (not Paddle), US and JP. There are the games designed for the US Sports Pad, but if you have an Export SMS and got paddle games, you could try to play them with the Sports Pad, as some people tried with some success, but no patch or P1/P2 swap is used in this case.

segasonicfan wrote

Ah Ok, so they do use TH. I didn't know that. Can someone tell me a list of games that use the Sports Pad? If Calindro is willing, it would be wonderful to have them patched and thus, have the GG be fully compatible with all SMS games :)


Games for the US Sports Pad use TH, but not the games for the Paddle or the game for the JP Sports Pad (only the Japanese Sports Pad Soccer cartridge). You already built the list you asked, just consider there are two Sports Pad Soccer versions (the JP cartridge and the Sports Pad mode of the World Soccer cartridge):

segasonicfan wrote

So far there are these US games:
Great Ice Hockey
Sports Pad Football
Sports Pad Soccer


But these below are the Paddle games:

segasonicfan wrote

and these JP games:

BMX Trial: Alex Kidd (required)
Galactic Protector (required)
Megumi Rescue (required)
OutRun (optional)
Super Racing (optional)
Woody Pop: Shinjinrui no Block Kuzugi (required)

Does Outrun 3D require it? I'm confused at the mention above.


No, it's optional for that game.
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Post Posted: Tue May 26, 2015 8:28 pm
Calindro, thank you so much for creating these! It'll make using a ROM cart soooo much easier, since people won't have to fumble with swapping the controller and gun. I tested them all and a few had issues:

Assault City - The patch didn't seem to work...the gun only worked in controller port 1.

Marksman Shooting - Regardless of which game I shot at during the title screen, it only loading trap shooting.

Missile Defense 3D - The screen would flash with the gun in the 2nd controller port, but it wouldn't register any hits. The rom I used to patch works fine before patching (with the gun in port 1, obviously).

Rescue Mission - same as above

Space Gun - It wouldn't load at all, it just stayed at a black screen.

Wanted - It wouldn't load at all, it just stayed at a red screen.

Obviously, there's a chance my roms could be the issue, but I'm wondering if anyone else had similar issues? Once again, thanks so much!
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Post Posted: Tue May 26, 2015 9:50 pm
Rescue Mission, Wanted, Gangster Town, and Safari Hunt worked without issue on my GG with player 2 and a GG Everdrive cart. Sounds like you might have bad roms or brightness issues. Though I havent tested those other games.
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Post Posted: Tue May 26, 2015 10:34 pm
RetroRGB wrote
Calindro, thank you so much for creating these! It'll make using a ROM cart soooo much easier, since people won't have to fumble with swapping the controller and gun. I tested them all and a few had issues:

Assault City - The patch didn't seem to work...the gun only worked in controller port 1.

Marksman Shooting - Regardless of which game I shot at during the title screen, it only loading trap shooting.

Missile Defense 3D - The screen would flash with the gun in the 2nd controller port, but it wouldn't register any hits. The rom I used to patch works fine before patching (with the gun in port 1, obviously).

Rescue Mission - same as above

Space Gun - It wouldn't load at all, it just stayed at a black screen.

Wanted - It wouldn't load at all, it just stayed at a red screen.

Obviously, there's a chance my roms could be the issue, but I'm wondering if anyone else had similar issues? Once again, thanks so much!

The patches you didn't mention work flawlessly? All the issues you've described can be caused by applying the patch to the wrong rom.
Compare your checksums to the following:
Assault City: 861b6e79
Marksman Shooting: depends on the game (see my earlier post)
Missile Defense 3D: fbe5cfbb
Rescue Mission: 79ac8e7f
Space Gun: a908cff5
Wanted: 5359762d
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Post Posted: Tue May 26, 2015 10:44 pm
Thanks for the response!

Calindro wrote
The patches you didn't mention work flawlessly?

Correct: Gangster Town, Laser Ghost, Operation Wolf, Rambo 3, Safari Hunt, Shooting Gallery and Trap Shooting all worked perfect.

I have a rom that's three games in one: Marksman Shooting & Trap Shooting & Safari Hunt. Is there a way to patch that one rom to have all three games use the light gun in the second port? Maybe that's easier overall for people, since it's only one rom to worry about?


Calindro wrote
All the issues you've described can be caused by applying the patch to the wrong rom.

That's what I figured. I'll try and download a new romset and see if that helps. Also, I'm using an MK-2000 Japanese SMS and the Gender Adapter I purchased from this site. I tested the games with the other adapter (the one that plugs into the top cartridge slot) and the problem didn't seem to change. Do you think that could make a difference?
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Post Posted: Tue May 26, 2015 11:02 pm
RetroRGB wrote
Thanks for the response!

Calindro wrote
The patches you didn't mention work flawlessly?

Correct: Gangster Town, Laser Ghost, Operation Wolf, Rambo 3, Safari Hunt, Shooting Gallery and Trap Shooting all worked perfect.

I have a rom that's three games in one: Marksman Shooting & Trap Shooting & Safari Hunt. Is there a way to patch that one rom to have all three games use the light gun in the second port? Maybe that's easier overall for people, since it's only one rom to worry about?

Read here:
http://www.smspower.org/forums/15523-LightPhaserPlayer2HacksWasSMSProgrammingRequest#87201
You need to apply the Trap Shooting P2 patch to your rom if the checksum matches.


RetroRGB wrote
Calindro wrote
All the issues you've described can be caused by applying the patch to the wrong rom.

That's what I figured. I'll try and download a new romset and see if that helps. Also, I'm using an MK-2000 Japanese SMS and the Gender Adapter I purchased from this site. I tested the games with the other adapter (the one that plugs into the top cartridge slot) and the problem didn't seem to change. Do you think that could make a difference?

The patches don't make major changes to the roms (if applied to the correct roms). They just change a few bits in a few instructions. So if the unpatched game works the patched game should work as well. But if you're applying the patch to a wrong rom an instruction might be replaced by a completely different instruction instead. For example a jump could be turned into something else probably causing data to be executed as instructions. That can obviously lead to any behavior you can imagine.
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Post Posted: Wed May 27, 2015 7:00 am
Quote
have a rom that's three games in one: Marksman Shooting & Trap Shooting & Safari Hunt. Is there a way to patch that one rom to have all three games use the light gun in the second port? Maybe that's easier overall for people, since it's only one rom to worry about?


Great idea, I think. Though Calindro has already earned their weight in gold ;) This will make using the flash cart more convenient - I hadn't thought about that!

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Post Posted: Wed Dec 21, 2016 9:39 pm
Calindro wrote
I've attached patches for the rest of the games except Spacegun. I'm working on it right now.


hello,

I believe I found a problem with the Laser Ghost patch. Although it does allow you to use the light phaser in the player 2 controller input, I believe that the "special shot" button, which is supposed to be triggered by the opposite controller's buttons, has not been remapped to the player 1 controller input.

The reason I say this is that when you discover a "S" icon, it's immediately used by simply pressing the gun trigger, which it should not do. It's supposed to be saved and triggered by the left-hand player's control pad.

Any chance this could be fixed?

Thanks a lot, Carl
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Post Posted: Wed Dec 21, 2016 10:52 pm
carljr17 wrote
Calindro wrote
I've attached patches for the rest of the games except Spacegun. I'm working on it right now.


hello,

I believe I found a problem with the Laser Ghost patch. Although it does allow you to use the light phaser in the player 2 controller input, I believe that the "special shot" button, which is supposed to be triggered by the opposite controller's buttons, has not been remapped to the player 1 controller input.

The reason I say this is that when you discover a "S" icon, it's immediately used by simply pressing the gun trigger, which it should not do. It's supposed to be saved and triggered by the left-hand player's control pad.

Any chance this could be fixed?

Thanks a lot, Carl

Hi Carl,

thanks for reporting.
I've uploaded a new version that fixes this issue.
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Post Posted: Mon Dec 26, 2016 7:55 pm
Calindro wrote
carljr17 wrote
Calindro wrote
I've attached patches for the rest of the games except Spacegun. I'm working on it right now.


hello,

I believe I found a problem with the Laser Ghost patch. Although it does allow you to use the light phaser in the player 2 controller input, I believe that the "special shot" button, which is supposed to be triggered by the opposite controller's buttons, has not been remapped to the player 1 controller input.

The reason I say this is that when you discover a "S" icon, it's immediately used by simply pressing the gun trigger, which it should not do. It's supposed to be saved and triggered by the left-hand player's control pad.

Any chance this could be fixed?

Thanks a lot, Carl

Hi Carl,

thanks for reporting.
I've uploaded a new version that fixes this issue.


I can confirm that this has been fixed and works if you apply it to the original ROM (not one that is already been patched, of course).

Thanks for the immediate feedback quick fix!

Now, I was wondering is there are more controller hacks, not like these exactly, but ones that might take advantage of the Sega Genesis controller hooked into the Master System (i.e. remapping the pause feature of each game to the Genesis's START button) -- I've heard it talked about but never seen the patch.

I guess I will start poking around myself to see if I can manage it.

Thanks again, Carl
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