EasyFlash is connected to the expansion port of the C64. It has 1 MiB of flash-ROM. Writing the cartridge images into the flash-ROM can be done directly from the C64 with the software EasyProg
Features
Single CRT-files can run as an original cartridge by starting up the C64 without selection in the start menu
Several 8/16 KiB large cartridges or Ultimax-cartridges can be compiled with EasyCrtMaker and started over an own start menu
CRT files of Ocean cartridges, as e.g. Shadow of the Beast, Terminator 2, Navy Seals, can be run from the cartridge
Larger cartridges are asl compatible by the use of patches for bankswitching
Own software can be developed for the cartridge
The cartridge can be emulated in VICE
It has a large 8 KiB SRAM module of which only 256 Bytes ( IO area $DF00-$DFFF ...)
are available
You can also create Game Compilations from PRG files. (Single load games)
Google Easyflash DCM for software
Please visit Wiki for all the software and instructions you need