MOS Technology VIC

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Leads of a 40-pin VIC VIC (PAL-Version 6561)

MOS Technology VIC (Video Interface Chip) - Integrated chipset for audio and video functions on the Commodore VIC-20 home computer. The exact designation is MOS Technology 6560 (for NTSC) and 6561 (for PAL).

VIC was designed in 1977 by Al Charpentier as a low-cost CRT terminal, slot machine, and video game console. Initially, Commodore had difficulty finding a market for this component. In 1979, MOS Technology began work on computer video chips marked as MOS 6564 and 6562, the latter being used in one version of Commodore PET. By the time VIC-20 was finally introduced to the VIC-20, designer Robert Yannes adapted the sound and image enhancements from the 6564 and 6562 chips.

16 registers were used for programming and controlling the system. The address space was $ 9000- $ 900F. Built-in analog-to-digital converters support the paddle controller and light pen.

Technical data Versions Bibliography

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