Intel CPU History 8080 8086 80286 (286) 80386 (386DX and 386SX) 80486 (486DX2, 486DX4, and 486SL) Pentium Pentium Pro Pentium Celeron Pentium III Pentium Pentium Pentium Core Solo Core Duo Core Duo Core Quad...

Operating Systems PC/M Windows Vista CP/M-86 MS-DOS 1.1 PC-DOS 2.0 MS-DOS 2.1 MS-DOS 3.0 PC-DOS 3.2 DR-DOS 3.31 MS-DOS 4.0 ROM-DOS DR-DOS 5.0 MS-DOS 5.0 DR-DOS 6.0 PC-DOS 6.1 Novell DOS 7.0 FreeDOS PC-DOS 7.0 PTS-DOS 7.0 Windows DR-OpenDOS 7.02 DOS 2000 PTS-DO...