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ShendoXT / memcarduino

Arduino PlayStation 1 Memory Card reader
GNU General Public License v3.0
258 stars 39 forks source link

External 7.6v supply. #10

Closed DieKatzchen closed 3 years ago

DieKatzchen commented 6 years ago

Is it actually necessary for it to be external or can I use a boost convertor?

TheBlueTroll commented 6 years ago

technically, for a standard psx memory card the 7.6 isnt connected, for third party cards maybe, but Sony ones dont have it connected on the card itself. so no, its usually not necessary.

DieKatzchen commented 6 years ago

Yes, but if I want to make it compatible with off brand cards, is it fine to use a boost converter or will that cause problems?

TheBlueTroll commented 6 years ago

dunno, i mean its incredibly dependent on what the third party card maker used the 7.6 rail for. i assume sony initially added the 7.6 volt rail on the memcard port for eeprom erasure (eeprom needed higher voltages to erase) but then sony changed official cards to flash which didn't need the higher voltage. Its not used by sony so i don't know how hard the requirement of 7.6 is, expesially with third party cards being literally whatever the manufactorers decided was ok. try a boost converter and see how it goes.

DieKatzchen commented 6 years ago

Looking at my card collection, I only have one unofficial card and it doesn't use that line (I checked). Debating whether I should acquire an unofficial card so I can test it or just leave well enough alone.

TheBlueTroll commented 6 years ago

Honestly i dont think its worth the effort because i also have alot of trouble even finding third party cards around where i am, and even then who knows how many used the 7.6v line anyway.

DieKatzchen commented 6 years ago

If I have to I can pull out my ps3 memory card thingy and run mcrwin in a virtual Windows xp. I'm gonna leave well enough alone.