Commodore Semiconductor Group

USA | Founded 1984 | Discontinued 1994

Commodore Semiconductor Group (CSG) was the specialized division of Commodore, Inc. focused on the design and manufacture of custom integrated circuits. It played a pivotal role in the 1980s computing boom by developing the essential silicon that powered iconic machines like the Commodore 64 and the Amiga series. Their most famous contribution was the MOS Technology 6502 processor lineage, which became a cornerstone of the home computer revolution. Beyond the 6502, CSG was instrumental in developing specialized chips like the SID (Sound Interface Device) and the VIC-II video chip, which defined the unique audiovisual identity of retro gaming. The division's legacy is deeply embedded in the history of microcomputing, representing the transition from general-purpose hardware to highly specialized, consumer-friendly multimedia-capable silicon.

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