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Henning
Joined: 18 Dec 2007 Posts: 32
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Posted: Wed Mar 30, 2011 7:57 pm Post subject: Did this MGD2 Hardware exists? |
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Hello,
i seen this in advertising from Bung but never in real so the Question is was this ever available to the Public?
I mean the DRAM Version of the MGD2 PCE Adapter...
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madman
Joined: 07 Jul 2006 Posts: 598
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Posted: Wed Apr 06, 2011 4:16 pm Post subject: |
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I've not only never seen it in person, but I've also never seen it listed in MGD2 parts lists back in the 90s. Was probably just a mock up of a product that never was released. There wasn't really a need for anything beyond the PCE SRAM adapter.
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RGB_Gamer
Joined: 01 Oct 2007 Posts: 879
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Posted: Wed Apr 06, 2011 7:11 pm Post subject: |
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madman wrote: | I've not only never seen it in person, but I've also never seen it listed in MGD2 parts lists back in the 90s. Was probably just a mock up of a product that never was released. There wasn't really a need for anything beyond the PCE SRAM adapter. |
Very true. But if you had a 32mb DRAM pack for this kind of adapter, you could play Street Fighter II which required 20mb.
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MottZilla
Joined: 08 Sep 2004 Posts: 765
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Posted: Thu Apr 07, 2011 2:19 am Post subject: |
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Assuming the interface supported SF2CE's mapper. I seem to recall SF2CE and the Arcade Card are the only ones that possess more than 8 megabits of memory as I think that is all a regular HuCard can address but I'm not certain on that.
Then it's the same silly case though, why would you make a new very expensive device to play 1 game. Same as Genesis copiers and SSF2.
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kyuusaku
Joined: 26 Jul 2003 Posts: 941 Location: .ma.us
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Posted: Thu Apr 07, 2011 8:53 pm Post subject: |
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It didn't exist.
The MGD2 debuted in 1991, at the time I believe the largest PCE games were still only 4M. And yup the HuCard ROM was decoded to 8M of the address space which makes 8M the upper limit for HuCard games without bankswitching, Bung knew this and they couldn't foretell SFII' because it was released 3 YEARS later. So at the time it would have been assumed the 8M SRAM card was sufficient, because it was/is; the only benefit to a DRAM I/O would have been storing 4 games at a time. Since the PCE wasn't as popular as the MD much less the SFC it's not really surprising only SRAM PCE/SGX adapters were released (SRAM adapters came out first). Even if the I/O came out after SFII' I still don't think the bankswitching would have been supported; the added bankswitching (and disable) logic wouldn't be worth it for a one-off game (the I/O shells reuse the same custom chips to keep costs down), though if there was a game they'd do it for it'd certainly have been SFII, but not on the PCE...
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Mystic_Merlin
Joined: 15 Oct 2007 Posts: 498 Location: Bangkok
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Posted: Fri Apr 08, 2011 12:22 pm Post subject: |
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That "prototype" looks real enough...too bad!
What are the hardware differences between the PCE and SGX SRAM adapters?
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kyuusaku
Joined: 26 Jul 2003 Posts: 941 Location: .ma.us
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Posted: Fri Apr 08, 2011 1:31 pm Post subject: |
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There isn't a difference. In fact the only differences between SRAM I/O are the plastic shells, edge connectors, save RAM decoding for MD and SFC and bankswitching for GB and GG. I'm not sure about the DRAM I/O, they might each have unique hardware since DRAM refresh is tied to the bus timing.
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