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Haze
Reged: 09/23/03
Posts: 4496
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Re: MegaPlay Programming
02/05/16 06:35 PM


> I suposse I could re-join both 68k ROMs and try make a comparison/quick disassembly
> and check for any differences against the Sonic 1 Rev01's disassembly. But where can
> I find the code that deals with the extra z80 ROM within MAME's source code? This
> might give me an insight on the "minimals" for booting the game.

all the handling for the extra hardware is in drivers/megaplay.cpp but as I said, I don't really trust it to be correct tho, it just kind of works right now, there are some bits that are clearly not right (and there's absolutely no understanding / support for having more than 1 cartridge inserted right now, the real hardware could cycle games like NeoGeo MVS)

you could compare a disassembly of the 2 versions (the actual binary will be significantly different, it's not a hack of the game, it's a complete recompile, doesn't have any of the 'slower' levels, has strict time limits, takes out 1-ups, takes out special stages etc)

you're pretty much on your own with this kind of thing beyond what i've pointed out tho.







Entire thread
Subject Posted by Posted on
* MegaPlay Programming CrazyMonkey 02/05/16 05:49 PM
. * Re: MegaPlay Programming R. Belmont  02/11/16 06:00 PM
. * Re: MegaPlay Programming Haze  02/11/16 07:54 PM
. * Re: MegaPlay Programming CrazyMonkey  02/15/16 01:48 PM
. * Re: MegaPlay Programming Haze  02/15/16 07:11 PM
. * Re: MegaPlay Programming R. Belmont  02/16/16 08:50 PM
. * Re: MegaPlay Programming CrazyMonkey  02/16/16 10:53 PM
. * Re: MegaPlay Programming MooglyGuy  02/17/16 02:12 AM
. * Re: MegaPlay Programming CrazyMonkey  02/17/16 04:39 AM
. * Re: MegaPlay Programming MooglyGuy  02/17/16 10:45 PM
. * Re: MegaPlay Programming CrazyMonkey  02/18/16 02:36 AM
. * Re: MegaPlay Programming R. Belmont  02/18/16 08:32 PM
. * Re: MegaPlay Programming Haze  02/05/16 06:21 PM
. * Re: MegaPlay Programming CrazyMonkey  02/05/16 06:29 PM
. * Re: MegaPlay Programming Haze  02/05/16 06:35 PM

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