I roto i te Hānuere 1981, MOS Hangarau, Inc., Commodore's integrated circuit design subsidiary, initiated a project to design the graphic and audio chips for a next generation video game console. i oti te mahi hoahoa mō te maramara, huaina MOS Hangarau VIC-II (Video Integrated Circuit mō whakairoiro) me MOS Hangarau SID (Sound Interface Pūrere mō te oro), i roto i te marama o Noema 1981. ka tīmata Commodore he kaupapa kēmu papatohu e whakamahi i te maramara hou<unk>kitea te Ultimax ranei te Commodore Machine MAX, engineered e Yash Teram i Commodore Japan. i te mutunga i whakakorea tenei kaupapa i muri i te iti noa iho i te mīhini i hanga mo te mākete Japanese. i te wa ano, Robert "Bob" Russell (pūnaha me te kaihoahoa i runga i te VIC-20) me Robert "Bob Yannes" (kaiwhakahaere o te SID) tīmata te kaupapa ki te hoahoa i te maramara whakairo-i runga i te hou o te raupapa o te Commodore. i roto i te
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