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GMOD2 cartridge
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There are several ways to flash a GMOD2 cartridge. Here a simple way is described to do it with a C64 or C64C without any external flash device.
Note: The C64 Ultimate can't be used to flash a GMod2 cartridge currently. (11.8.26)
More details can be found here: https://www.freepascal.org/~daniel/gmod2/
Because the binary file that shall be flashed is 512kByte large and therefore larger than a floppy disc is you will need a SD2IEC device.
(1)
Copy the "lemmings.bin" and the "flasher-c64-2.prg" to the SD card.
(2)
Put the GMOD2 cartridge into the C64 and switch it on. Usually the GMOD2 is pre-installed with the flasher utility and starts right away - got to step (5)
(3)
If the GMOD2 cartridge already has Lemmings Reloaded installed and you want to update it
hold RUN/STOP while switching on the C64. It will boot into the regular C64 basic. Go to Step 4.
If the cartridge was flashed with any other program you need to deactivate the cartridge first. Refer to the cartridge manual on how to do this. Usually there is a switch on the board where it can be deactivated. Boot into regular basic then activate the cartridge again before flashing.
(4)
Load the "flasher-c64-2.prg" and start it.
(5)
Input following commands:
>9 (Enter - ONLY if SD2IEC is drive 9!)
>file:lemmings.bin (Enter)
>won (Enter - if an error appears the cartridge might not be activated yet)
>fwrit (Enter)
Flashing takes about 6 minutes.
Sectors 0 to 7 are written - 8 total.
That's it.
Switch off / on the C64 and Lemmings Reloaded will be started.
(Game save data will automatically be stored into the internal eeprom of the cartridge.)