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- Joined: 21 Apr 2000
- Posts: 598
- Location: Newcastle upon Tyne, England
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Another paging chip find
 Posted: Sun Jul 16, 2000 5:05 pm
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I've been car booting today, and came back with a crate load of SMS stuff. Overall, not much of huge interest, although I got a SMS 2 with Sonic BIOS - never had one of these before!
I did find three carts with paging chips. The first two were Afterburner and Op Wolf with 315-5235 and 5365 respectively, as already mentioned in Eric's doc.
The third was a bit more interesting - it's the 3 game cart Master Games I, as supplied with some SMS 2 models.
Rather than include a menu for game selection, the cart incorporates a 315-5235 for paging in conjunction with a 4-bit counter and associated logic. A capacitor is used to maintain power to the counter when the console is switched off. Each time the console is powered off, then on again, the counter is (presumably) incremented and a different game is selected.
I have dumped the cart, but the games themselves (Super Monaco GP, Columns, World Soccer) are byte-for-byte identical to the standard versions.
I'll post a pic of this board later.
Mike
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- Joined: 24 Jun 1999
- Posts: 1732
- Location: Paris, France
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Posted: Sun Jul 16, 2000 6:23 pm
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Quote > I've been car booting today, and came back with a crate load of SMS stuff. Overall, not much of huge interest,
Always interesting. If I had money I would go and buy everything ^_^
Quote > I did find three carts with paging chips. The first two were Afterburner and Op Wolf with 315-5235 and 5365 respectively, as already mentioned in Eric's doc.
> The third was a bit more interesting - it's the 3 game cart Master Games I, as supplied with some SMS 2 models.
> Rather than include a menu for game selection, the cart incorporates a 315-5235 for paging in conjunction with a 4-bit counter and associated logic. A capacitor is used to maintain power to the counter when the console is switched off. Each time the console is powered off, then on again, the counter is (presumably) incremented and a different game is selected.
> I have dumped the cart, but the games themselves (Super Monaco GP, Columns, World Soccer) are byte-for-byte identical to the standard versions.
> I'll post a pic of this board later.
I'll save you the time:
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- Joined: 24 Jun 1999
- Posts: 1732
- Location: Paris, France
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Btw..
Posted: Sun Jul 16, 2000 6:26 pm
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What kind of manual do you have with the cartridge?
Mine cames with a World Soccer manual only.
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- Joined: 21 Apr 2000
- Posts: 598
- Location: Newcastle upon Tyne, England
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Re: Btw..
Posted: Sun Jul 16, 2000 6:44 pm
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Quote > What kind of manual do you have with the cartridge?
> Mine cames with a World Soccer manual only.
It didn't come with one, unfortunately, just the box!
Maybe it originally came with three separate manuals, for the different games?
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- Joined: 24 Jun 1999
- Posts: 1732
- Location: Paris, France
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Re: Btw..
Posted: Sun Jul 16, 2000 8:57 pm
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Quote >> What kind of manual do you have with the cartridge?
>> Mine cames with a World Soccer manual only.
> It didn't come with one, unfortunately, just the box!
> Maybe it originally came with three separate manuals, for the different games?
World Soccer manual is already quite big, three manuals of the same size would not fit I think.
Anyway.. you would be able to dump the ROM directly ? (desoldering it and bypassing mapping stuff)
Because using a modified cartridge with that mapper would allow us to create 3-in-1 cartridge with 128 kb games.
Not that it is technically very important now, but it could be fun ^_^
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