C128

The Commodore 128, often abbreviated as C128, is a personal computer that was launched in January 1985 by Commodore International. It was a successor to the popular Commodore 64 and offered a significant upgrade in terms of hardware and capabilities. The C128 retained backward compatibility with the C64, allowing users to run most existing C64 software.

One of the key advancements of the C128 was its dual-processor architecture. It featured a Zilog Z80 CPU for CP/M compatibility and a MOS Technology 8502 CPU, which was a faster version of the C64's 6510, running at 2 MHz. This allowed the C128 to operate in three distinct modes: C128 mode, CP/M mode, and a backward-compatible C64 mode. The machine also boasted an enhanced graphics capability with higher resolutions and more colors available, alongside an improved sound chip.

The C128 came with a larger amount of RAM, typically 128 KB, which could be expanded. It also featured a built-in numeric keypad and an improved keyboard layout. Commodore aimed to position the C128 as a more professional and business-oriented machine than its predecessor, though it also retained strong appeal for home users and gamers. Despite its technical improvements, the C128 ultimately had a shorter lifespan than the C64, as Commodore shifted its focus to newer technologies.