Digital Research
Operating Systems
Models
Operating Systems
- CP/M — CP/M’s architecture was built on a tripartite division: the Console Command Processor (CCP), the Basic Disk Operating System (BDOS), and the Basic Input/Output System (BIOS)…
- CP/M 2.2 — Digital Research CP/M 2.2 — the 8080/Z80 disk operating system with six CCP built-ins, ASM.COM and MOVCPM.COM, shipped on an 8-inch IBM 3740 diskette with seven manuals.
- CP/M Plus — CP/M Plus emerged not as a clean break but as a necessary evolution. Digital Research responded to the creeping obsolescence of CP/M 2 as hardware pushed past 64K memory…
- CP/M-86 (1981–1982) — Digital Research CP/M-86 — the 16-bit successor to CP/M for Intel 8086/8088, shipped on two 8-inch floppies, priced from $60 to $100, and outmaneuvered by MS-DOS.