Yours is definitely a 16mhz crystal
take a look at gen 7 arduino support [reprap.org]
Their boot loader is same cpu, with a crystal
From gen 7 boards.txt file
Gen7-1284P-16.bootloader.low_fuses=0xF7
Gen7-1284P-16.bootloader.high_fuses=0xDC
Gen7-1284P-16.bootloader.extended_fuses=0xFC
But most likely your board already has fuses and bootloader installed. All you need to do is upload new firmware
just set your board type to Melzi in the configuration.h file of marlin and the standard firmware should all work
I would not recommend installing any other weird marlin variants. they generally don’t get maintained. Just use the normal marlin [github.com]
take a look at gen 7 arduino support [reprap.org]
Their boot loader is same cpu, with a crystal
From gen 7 boards.txt file
Gen7-1284P-16.bootloader.low_fuses=0xF7
Gen7-1284P-16.bootloader.high_fuses=0xDC
Gen7-1284P-16.bootloader.extended_fuses=0xFC
But most likely your board already has fuses and bootloader installed. All you need to do is upload new firmware
just set your board type to Melzi in the configuration.h file of marlin and the standard firmware should all work
I would not recommend installing any other weird marlin variants. they generally don’t get maintained. Just use the normal marlin [github.com]