Windows 1.0/Development Release 4

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Development Release #4
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Kernel version 1.0
CPU architecture x86 (16-bit)
Compile date August 31, 1984

Development Release #4 is a pre-release build of Windows 1.0. It was compiled in late August 1984. Images of the disks and the release notes were shared by member Allosgroup on July 8, 2021.[1]

It is the last build to use the .MOD extension as the main executable format.

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References