ocr: THE EXPANSION BUS The expansion bus available at CN1, is a parallel port that is used to connect program or game cart- ridges as well as special interfaces. PIN CONFIGURATION" 2221201918 171615141312111008765432 ZYXWVUTSRPNMLKJMFEDCBA *See Sheet 1 of Schematic for line definitions. The C128 Expansion Bus is compatible with the C64 Expansion Bus, while at the same time allow- ing extended capabilities in C128 mode. CARTRIDGE ADDITION The C128 can use larger and more sophisticated cartridges than the C64 can. One of the main reasons for this is the new banking scheme used in the C128 for externa ...