Before revision: Home computers While many eight-bit home computers of the 1980s, such as the BBC Micro, Commodore 64, Apple II series, the Atari 8-bit , the Amstrad CPC, ZX Spectrum series and others could load a third-party disk-loading operating system, such as CP/M or GEOS, they were generally used without one.
After revision: Home computers While many eight-bit home computers of the 1980s, such as the BBC Micro, Commodore 64, Apple II , Atari 8-bit computers, Amstrad CPC, ZX Spectrum series and others could load a third-party disk-loading operating system, such as CP/M or GEOS, they were generally used without one.