In option.h add // in front of #define fastcrc and remove // in front of #define slowcrc to change CRC32 calculation to slow.
// Define CRC method for dumping N64 ROMs
//#define fastcrc //crc will be calculated during dumping from memory
#define slowcrc // crc will be calculated after dumping from SD card
Uncomment #define clockgen_installed in options.h and switch CLK1 switch to ON position. With Adafruit clockgen the eeprom now runs at the correct 2Mhz.
Sometimes the Gameshark will lock itself up, in this case it helps if you put a 6102 game into the Gamesharks slot and then put both into the Cart Reader and just start dumping the rom as if it was a game.
For some reason I can only read or write the first 128KB while the second 128KB remain 0x00.
You might have to re-calculate your homebrew rom's checksum if you had to trim it down to 128KB. In this case you can use chksum64.exe out of the libdragon devkit. Not sure if this is needed though.
And yes by "SST29LE010 N64 Repro" I'm jokingly referring to the Gameshark.
I wanted to turn the Gameshark into an import adapter using Lac's boot emu but the boot emu just restarts itself since the Gameshark isn't switching to the top cart slot.
Sometimes the Gameshark locks up, then you have to plug a 6102 cartridge into the Gamebuster's top slot and then connect both to the cart reader and read the rom. After that it should be accessible again.
Don't use this to update your working Gameshark since you can't read nor write the whole 256KB right now.
But if you have a broken one, have fun. :)
I tested this with a Gameshark V2.0
Some cartridges might have differing versions depending on the region they were released to. In most cases, the IC identifies as something else not presently covered by the current code, but they are ABI compatible with the existent FlashRAM supported types.
This will add support for 29L1100KC-15B0 compatible ICs like the MX29L1101.
In Cart_Reader.ino line 71 change "boolean n64crc = 1" to "boolean n64crc = 0" to disable the CRC32 check when dumping roms. This is useful if you rather calculate the checksums on your much faster computer. Calculating the CRC32 is enabled by default now and can take quite some time.
- The Fujitsu MSP55LV100S consists out of two Fujitsu MSP55LV512 which themselves are just Spansion S29GL256N flashroms. One flashrom is used for the high byte the other for the low byte.
- You can now browse pages with the Serial Monitor's file browser just like you can with the OLED.
I don't have them myself so I can't test but maybe others can.
Flashrom Programmer: Macronix MX29LV320 and MX29LV640 (connected as 16bit flashrom in 8bit mode)
GBA: Intel 4400L0ZDQ0 (Only using the first 32MB)
N64: Fujitsu MSP55LV100S and Macronix MX29LV640 (Fujitsu might have a different sector size)
- It seems like flashroms in the 16bit slot like the 29L3211 were accidentally programmed byte swapped up until now and only the 8bit slot worked correctly.
- You can now program files smaller than the flashrom's size without getting a verification error
- Added the special 29F1601 flashrom taken out of the Nintendo Power SF Memory carts
Also re-enabled blankchecking at least until I know this code works reliably.
Writing 64MB takes 40 minutes. I did not optimize yet so it might become faster in the future.
