Web site: (not active) Origin: USA Category: Workstation Desktop environment: CLI Architecture/Platform: Zliog Z80 Based on: Independent Wikipedia: HDOS Media: Live The last version | Released: 3.02 | 1986 HDOS (Heath Disk Operating System; also: HeathDOS) – an open-source microcomputer operating system released in 1978, originally written for the Heathkit H8 computer system and later … Read moreHDOS