Definition - What does Commodore 128 mean?
The Commodore 128, released in 1985, was the last 8-bit computer of the Commodore line, after which, the company focused on IBM-type machines and other designs. The Commodore 128 had 128k of RAM, and a Zilog Z80 CPU enabling the machine to run in a separate mode with a Control Program/Monitor or CP/M operating system.
Techopedia explains Commodore 128
The Commodore 128 was pursued by Commodore to increase compatibility and versatility, in the aftermath of the departure of Jack Tramiel for Atari months earlier. The Commodore had to compete with the Atari ST line. To that end, under lead engineer Bill Herd, Commodore produced something that was more versatile and capable than the original 64, and more stylish as well. The Commodore 128 was succeeded by various 16/32 Amiga designs.