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Phil Bennett
L'Emuchat
Reged: 04/20/04
Posts: 880
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Re: DU Update: Final Lap 3
09/29/10 03:00 AM


> That situation is kind of interesting, I've been discovering stuff about it today,
> other people probably already knew... It's actually SYS2-C68 on this board and the
> dump matches the rom named that way in some Super World Stadium sets. I'm not sure if
> all Final Lap 3 sets use this one or if some of them used the SYS2C65C one or what,
> but it's definitely correct on this set for it to use the C68 one. I've powered up
> the board and it runs perfectly. The chip isn't anything special, any programmer can
> read it, I think it might have just been skipped over during some dumps because it's
> labeled funky? I don't know. This chip isn't an MCU, it looks like it's data for the
> MCU.

I'm trying to make sense of this MCU malarky. It's a bit confusing.

Most System 2 games use a 6805-based MCU with an internal ROM (the Namco C65). Not all games have the SYS2C65C etc. external ROM.

Later games use an M37450 MCU (which we don't currently support). There appear to be two variants - the Namco C68 with internal ROM and a ROM-less off-the-shelf Mitsubishi part which requires an external ROM.







Entire thread
Subject Posted by Posted on
* DU Update: Final Lap 3 SmitdoggAdministrator 09/28/10 08:03 PM
. * Re: DU Update: Final Lap 3 jonwil  09/29/10 01:48 AM
. * Re: DU Update: Final Lap 3 SmitdoggAdministrator  09/29/10 02:00 AM
. * Re: DU Update: Final Lap 3 Phil Bennett  09/29/10 03:00 AM
. * Re: DU Update: Final Lap 3 R. Belmont  09/29/10 10:54 PM
. * Re: DU Update: Final Lap 3 jonwil  09/29/10 03:52 PM
. * Re: DU Update: Final Lap 3 Phil Bennett  09/29/10 09:47 PM
. * Re: DU Update: Final Lap 3 Charles MacDonald  09/30/10 12:15 AM
. * Re: DU Update: Final Lap 3 R. Belmont  09/30/10 09:17 PM
. * Re: DU Update: Final Lap 3 jonwil  10/01/10 01:15 AM
. * Re: DU Update: Final Lap 3 Fever  09/28/10 09:38 PM
. * Re: DU Update: Final Lap 3 SmitdoggAdministrator  09/28/10 09:45 PM

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