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Post by dshadoff on Dec 29, 2022 6:21:54 GMT
I've reverse-engineered the FX-BMP port, and now I've built a cartridge to use it - the PC-FX nvBMP ! This is a FX-BMP replacement which doesn't need to use batteries. The original ones are actually REALLY expensive on eBay etc., although with the semiconductor shortage, this cartridge might not be all that much cheaper... although it won't need batteries, so it won't mysteriously lose your data when you aren't looking, and you won't find corroded battery junk inside in a few years' time. Additionally, the FX-BMP is a 128KB cartridge; this one can accept larger memory chips if you so desire (and can afford them). MRAM (magneto-resistive RAM) chips are in use here, which are available in 512KB and 2MB sizes as well.  The GitHub repository is here, and includes all the plans including designs for an enclosure which can be printed on a 3D Printer:: github.com/dshadoff/PC-FX-NVBMP
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exodus
Punkic Cyborg
 
Posts: 145
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Post by exodus on Jan 13, 2023 23:07:44 GMT
whoa, this is pretty amazing!! any chance you'd make and ship a few of these?
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Post by dshadoff on Jan 14, 2023 0:01:58 GMT
Sorry, I won't be doing that - besides parts being hard to find, they are a bit time-consuming to make if any part of it has to be done outside of the PCB factory. Plus, shipping anything from Canada is just miserable. But with the plans up on GitHub, I'm sure somebody will do it...
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Post by dshadoff on Jan 14, 2023 1:11:21 GMT
Oh, I should also mention... I'm making another cartridge like this which should act a little differently, but should be cheaper to make/get and more hobbyist-friendly too. Stay tuned...
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exodus
Punkic Cyborg
 
Posts: 145
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Post by exodus on Jan 18, 2023 23:17:27 GMT
No worries!! I'll stay tuned for that V2 as well.
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