NathaanTFM's latest activity
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NathaanTFM replied to the thread Gathering DS flashcard knowledge - DIY "opencard" idea.If you want to write your own program for your microcontroller, I think the best I can do is to explain how mine currently works? I'm not an expert in this field so there are most likely some parts that are wrong. The DS cartridge protocol is... -
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NathaanTFM replied to the thread Gathering DS flashcard knowledge - DIY "opencard" idea.I'm working on a budget with chips I can afford, and there's also limited space on a physical cartridge, so the best I can use are SPI NAND FLASH chips, which have slower read speeds. I have looked at some more SPI NAND flash chips, and it turns...
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NathaanTFM reacted to Apache Thunder's post in the thread Gathering DS flashcard knowledge - DIY "opencard" idea with
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Yeah I'm not sure how that side of it works under the hood. I do know that it doesn't present it's main rom 1:1 to what is present on nand (the arm7 binary is no where to be found. Maybe in the odd compressed/encrypted blob of data it stores... -
NathaanTFM replied to the thread Gathering DS flashcard knowledge - DIY "opencard" idea.It still probably has to circumvent the DS security to reduce the read rate - I don't know a NAND chip able to load a 200h bytes region (at least, the first byte) in 5 us. But if you manage to increase the gap count before the game loads, then a...
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NathaanTFM replied to the thread Gathering DS flashcard knowledge - DIY "opencard" idea.It's definitely more of a novelty than an actual product (the initial goal was to find a way to distribute my homebrew game without buying a bunch of aliexpress R4s because those usually suck). Making a flashcard could be interesting, but it...
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NathaanTFM replied to the thread Gathering DS flashcard knowledge - DIY "opencard" idea.Hey, I've finally got some good news! I'm working on a budget so I can't afford debugging tools and that's one of the reasons it takes so much time. But I've bought some cheap logic analyzer clones and it helped me debug the remaining issues...
