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Coincounter in SonSon
#185670 - 03/21/09 03:36 PM
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I think I found the coin counter for SonSon. The game allways writes 0x01 to 0x301F when inserting coins into coin A and 0x01 to 0x301E when inserting coins into coin B.
Is there a better place to discuss these things (I found a couple of things while making my GBA emulators) or are there some MAME devs around here who can make the changes to the MAME source?
Edited by FluBBa (03/21/09 09:00 PM)
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Stiletto |
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They're always after me Lucky ROMS!
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Re: Coincounter in SonSon
[Re: FluBBa]
#185686 - 03/21/09 09:08 PM
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> I think I found the coin counter for SonSon. The game allways writes 0x01 to 0x301F
> when inserting coins into coin A and 0x01 to 0x301E when inserting coins into coin B.
> Is there a better place to discuss these things (I found a couple of things while
> making my GBA emulators) or are there some MAME devs around here who can make the
> changes to the MAME source?
This is as good a place as any, many MAMEDEVs post at mameworld.info forums.
- Stiletto
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Re: Coincounter in SonSon
[Re: Stiletto]
#185716 - 03/22/09 03:17 AM
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Also, I guess sprite position values of 0xF9 -> 0xFF should be treated as -7 -> -1. It's used in the game intro and looks better (don't know if that's how it looks on HW though).
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Re: Coincounter in SonSon
[Re: FluBBa]
#186251 - 03/29/09 05:34 AM
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> Also, I guess sprite position values of 0xF9 -> 0xFF should be treated as -7 -> -1.
> It's used in the game intro and looks better (don't know if that's how it looks on HW
> though).
Can you submit a patch (via mamedev.org) which adds those two things to sonson? We could use someone with your knowledge around.
LN
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"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
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Re: Coincounter in SonSon
[Re: Lord Nightmare]
#186412 - 03/30/09 10:25 PM
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I wish I had the time to do that but I don't even have a compiler setup so I can compile MAME and test the change (I only have a dev enviroment for GBA).
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Re: Coincounter in SonSon
[Re: FluBBa]
#190206 - 05/13/09 08:15 AM
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> I wish I had the time to do that but I don't even have a compiler setup so I can
> compile MAME and test the change (I only have a dev enviroment for GBA).
I can certainly understand the lack of time. Although I'll just mention in the unlikely case you weren't already aware that it's super-easy to set up a MAME development environment and it needs no formal installation - tools and libraries are just extracted to a folder of your choice and your off. The mingw-mame-20070810.exe is just a self-extracting 7-Zip file. 
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| Kale |
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Il Sindaco
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Re: Coincounter in SonSon
[Re: FluBBa]
#197324 - 07/26/09 04:34 PM
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> Also, I guess sprite position values of 0xF9 -> 0xFF should be treated as -7 -> -1.
> It's used in the game intro and looks better (don't know if that's how it looks on HW
> though).
It's called sprite wrap-around, a common bug in sprites function...
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