Recent content by Czo

  1. Czo

    Hacking Pinout of the MBC7? Looking someone with a multimeter and a Command Master cartridge!

    I figured out which is the A20 address pin on the MBC7 and successfully converted an 8 Mbit Japanese Kirby game cartridge to a 16 Mbit DIY flash cart:
  2. Czo

    EZ-Flash Junior incompatibility with GB DMG Mod v5

    I measured a slightly lower power consumption and faster ROM loading speed with FW5 on my GBC. I don't have a DMG to test it there, but maybe the smaller spike helps to keep the system running with FW5: https://gbatemp.net/threads/how-does-ez-flash-junior-work.673805/post-10706526
  3. Czo

    Hacking Pinout of the MBC7? Looking someone with a multimeter and a Command Master cartridge!

    I have a Japanese Korokoro Kirby game, and I have everything to replace the mask ROM with a 16 Mbit flash chip, but to accomplish this, I need to know which pin is the A20 pin on the MBC7. If you know the MBC7 pinout or if you have the Command Master game and a multimeter, you can help me to...
  4. Czo

    How does EZ Flash Junior work?

    I've finished with the modding of my lab PSU, so I can now measure power usage with a PC. Here are the comparisons between the original Donkey Kong Country game cartridge versus the EZ-FLASH Junior when EZ-FLASH loads the game with the "start then A" combo. I tried to synchronise the charts as I...
  5. Czo

    How does EZ Flash Junior work?

    Hm, it's strange. I never had any problems in the past month (I've got this circa three weeks ago; tried nearly 100 games), and according to my PSU's display, loading a game is not as power-demanding as running it (*). But if I got the I2C current/voltage meter things, I will check it again and...
  6. Czo

    Greetings from Hungary

    Hi! I was today years old (42M; actually it was three weeks ago), when I bought my first game console, a limited edition GBC with a Donkey Kong Country cart. Now, I've already replaced the capacitors in the GBC and the battery in the DKC cart, and the screen with a drop-in backlight IPS...
  7. Czo

    How does EZ Flash Junior work?

    Thanks for the datasheet! So, both the Intel/Micron/Numonyx (Intel bought Micron's flash storage department maybe a decade ago, if I remember correctly) and the S71 IC contain flash memory and (p)SRAM. On my configuration, the S71 contains 4 Mbits of PSRAM ("40" in the part number), but I saw...
  8. Czo

    How does EZ Flash Junior work?

    I previously thought, when I start a game, the device loads the ROM file from the SD card to the onboard flash memory (S71GL ic). But, according to the markings on mine, it's maybe not. Because I reckon the flash is in the U4 71GL032A40BFW0F, which is only 32 Mbits, not 64, but I can load a 64...
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