Questions about diy GBA flashcart

Discussion in 'GBA - Flashing Hardware and Software' started by Thee_BaBs, Sep 19, 2015.

  1. Thee_BaBs
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    Thee_BaBs GBAtemp Regular

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  2. FAST6191

    FAST6191 Techromancer

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    First I should probably link the following as it is better than both those links, on the first link it looks like the guide maker did not create a cart using the guide either.
    http://reinerziegler.de/GBA/gba.htm

    That link looks like it covers the HCl using toner transfer method. Not my favourite method of making a homebrew PCB (a milling bit and a CNC would be my first choice but those are not terribly cheap) if I am going with chemicals but it works if you do it right. This is not the place to start a Ferric Chloride vs Hydrochloric discussion though.

    Saving. No that homebrew cart does not save or have the function for it. There is an as yet untested build with save support on the link above as well.

    You can flash things in many ways but in this case if you do not want to do any extra programming then it will want a GBA or GBA SP and a so called multiboot cable. You run this on your PC and connect it to the GBA, it then boots like it thinks it is connected to another GBA with a link cable (or a GBA-GC linkup I guess) and with that you can send the relevant flash commands.

    If electronics interests you and you want to have a project to keep your interest then yeah try this. If you want a useful flash cart then this is not the way, at least not without modifying it and that will take at least some electronics knowledge -- though you can probably find something you can wire up directly to power and pins without any intermediate logic/voltage handling/crazy fine tuning on passives. If you are thinking this might be a cheaper way to a flash cart it is not -- if you already have the gear or need it for something else then OK but buying it for just this is not a cheap method.
     
  3. Thee_BaBs
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    Thee_BaBs GBAtemp Regular

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    Thanks FAST6191
    I think i'm going to design a pcb for the schematic shown on that page, I have heard about using multiboot cables in my research but it looks like they can only send a tiny bit of data
     
  4. The Real Jdbye

    The Real Jdbye Always Remember 30/07/08

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    In this particular case I believe the data sent through the multiboot cable is actually a small program that will download the rest of the data from the PC (reading the ROM data through the link cable) and write it to the flashcart, so that limitation doesn't apply.
     
    Last edited by The Real Jdbye, Sep 21, 2015