Commodore PET

From IFWiki

The Commodore PET (or CBM) was the name of a series of 8-bit computers sold by Commodore International between 1977 and 1982.

Early adventures for the machine included Haunted Mansion by John O’Hare and Roger Chaffee’s Quest.

The machine was succeeded by the VIC-20 and the C64, with many PET games (particularly those written in BASIC) ported to those platforms.