Thomas Lövskog is developing cartridges for the Commodore VIC-20. The GCart Junior is a RAM expansion for the VIC-20. The features are: RAM expansion for Block 1, 2, 3 & 5 and RAM 1, 2 & 3. Memory enable, disable and write protect. RAM at IO#2 and IO#3. 16 MB Flash with super fast loading and a 3D printed casing.