I recently acquired a Thomson TO7/70 home computer. It came without any MEMO7 cartridges (ROM cartridges) that are necessary to properly use it. I found images of the ROMS, and a schematic, so in principle it should be possible to make your own cartridge and program with the images.
Ideally I'd like something that can be easily programmed from a PC (maybe through serial or USB). One can still buy parallel EEPROMs, but I don't own an EEPROM programmer.
Has anyone every done something similar before? Maybe for a different computer? Any suggestions, tips, recommendations for parts?