The current configuration on my Commodore 128 is:
The Commodore 128 is backwards compatible with the Commodore 64 it is one of those strange dual processor microcomputers having a 8502 for compatibility and a Z80 for CP/M+ 3.0, The 128k is paged, and expandable. The video display on this machine is a little quirky, it has two separate independent video connectors, one for the 40 column and graphics modes, and the other for the 80 column modes. The BASIC on the 128 added support for the machine's sound and graphics capabilities (in the 64 one had to directly monkey about with memory for sound and graphics from BASIC).