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CP/M-86 is a port of Digital Research's CP/M operating system to the Intel 8088/8086. The earlier CP/M-80 was extremely popular on 8080/Z80 microcompu ...

Originally an optional module for Concurrent CP/M-86 3.1, this version of Digital Research's CP/M provided basic compatibility with PC-DOS in 1983. Si ...

Concurrent CPM-86 is a multitasking version of CP/M that evolved from Digital Researches' earlier multitasking MP/M product. A seperate add-on was ava ...

First released in 2002, Breadbox Ensemble from Breadbox Computer Company, was a commercial office application suite for DOS that was based on GEOS/Geo ...

Windows Millennium Edition (internally Windows 4.90) was the last in the line of DOS-based Windows products. Like Windows 95 and Windows 98 it used th ...

Windows Millennium Edition (internally Windows 4.90) was the last in the line of DOS-based Windows products. Like Windows 95 and Windows 98 it used th ...

Windows 98 is a continuation of the Windows 95 product. The major change is an insanely heavy focus on web integration. The help system, many applicat ...

Windows 98 is a continuation of the Windows 95 product. The major change is an insanely heavy focus on web integration. The help system, many applicat ...

Windows 98 is a continuation of the Windows 95 product. The major change is an insanely heavy focus on web integration. The help system, many applicat ...

Windows 98 is a continuation of the Windows 95 product. The major change is an insanely heavy focus on web integration. The help system, many applicat ...

Windows 98 is a continuation of the Windows 95 product. The major change is an insanely heavy focus on web integration. The help system, many applicat ...

Win32s (Win32 subset) was an API layer for Windows 3.1 and Windows for Workgroups that allowed some Win32 applications that compiled with the subset o ...