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Re: [Mame] excting soccer 2 [Re: caius] #117962 10/09/20 03:12 PM
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caius Offline
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Here I am.Thanks to your hacked ROM I played until the 3rd martch and can confirm the cheerleaders have incorrect colors in MAME, here's a picture taken from PCB :

[Linked Image from i.postimg.cc]


As for the extra rows of cheerleaders in the field after you score more goals, sorry again but I've been not able to score a single goal, game is damn hard!

Last edited by caius; 10/09/20 03:17 PM.
Re: [Mame] excting soccer 2 [Re: caius] #117963 10/09/20 03:41 PM
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sleepwalk7 Offline OP
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Thank you very much Caius! it was a decisive test as now we can say for sure that's a bug in Mame! In my opinion (but I say this without having proof) all these extra rows after scoring seem excessive to me!

Re: [Mame] excting soccer 2 [Re: sleepwalk7] #117964 10/09/20 04:33 PM
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Haze Offline
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Alright, well given that we're using the same PROMs from the PCB now, and the 3rd match palette doesn't corrupt on the PCB, then yes, it seems a MAME bug, maybe the theory about the palette bank being used is correct. Thank you for testing, it's good to have the original reference.

The extra rows of cheerleaders look intentional based on my own study of the code, there's code that loops around based on the number of goals you've scored, up to a limit of what can be shown on screen. I can't give caius an easy test for this, because the code does seem to have additional checks (involving the protection device) against modification, even if you match the checksum or patch out the initial checksum.



Re: [Mame] excting soccer 2 [Re: Haze] #117965 10/09/20 04:49 PM
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Originally Posted by Haze
Alright, well given that we're using the same PROMs from the PCB now, and the 3rd match palette doesn't corrupt on the PCB, then yes, it seems a MAME bug, maybe the theory about the palette bank being used is correct. Thank you for testing, it's good to have the original reference.


You are welcome!I can confirm the BPROMs dumps are good, I dumped the devices three times with different programmers and I got always the same CRCs

Originally Posted by Haze

The extra rows of cheerleaders look intentional based on my own study of the code, there's code that loops around based on the number of goals you've scored, up to a limit of what can be shown on screen. I can't give caius an easy test for this, because the code does seem to have additional checks (involving the protection device) against modification, even if you match the checksum or patch out the initial checksum.


I put all my effort into it but, me bad, I was not able to score a goal:(
Anyway, I can keep the board still for some time so feel free to ask about further checking

Last edited by caius; 10/09/20 07:29 PM.
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