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Microsoft MS-DOS 1.25 (Zenith Z-DOS 1.01) and utilities
This archive contains MS-DOS 1.25, rebranded as "Z-DOS" for the the Heath-Zenith Z-100 computer. It also includes the diagnostic disk, and customer demo disk. Note, these will not work on IBM PC computers, emulators, or later IBM PC compatible Zenith machines. This archive contains imagedisk images of each disk. Use imagedisk on a PC to re-create each disk.
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DOS / OS
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Microsoft MS-DOS 3.1 (Zenith Z-100PC OEM) 3.1
This is MS-DOS 3.1 for the Zenith Z-150/160/170/180 IBM PC compatible computers. These are referred to as the "Z-100 PC" series, but excludes the original Z-100, Z-110, and Z-120 which were not IBM PC compatible. This archive contains two 320k disks in Imagedisk format. Source: www.dunfield.com
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DOS / OS
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Microsoft MS-DOS 3.20 (Zenith Z-100PC OEM) 3.20 (BIOS 3.29)
This is MS-DOS 3.20 (BIOS 3.29) for the Zenith Z-150/160/170/180 IBM PC compatible computers. These are referred to as the "Z-100 PC" series, but excludes the original Z-100, Z-110, and Z-120 which were not IBM PC compatible. This archive contains two 360k disks in Imagedisk format.
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DOS / OS
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Microsoft Windows 2.03 (Zenith OEM)
This OEM version contains support and drivers for the Zenith Personal Computer, Zenith Portable, and Zenith EGA cards.
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DOS / OS
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MS-DOS 1.25 (Zenith OEM Z-DOS 1.19) 1.25/1.19
Z-DOS was the operating system provided with Heath/Zenith Z-100 series computers. Z-DOS release 1.19 (a later 1983/84 release) is based on a heavily modified MS-DOS 1.25 core. This archive contains one 360k disk (yes, odd for DOS 1.x, but there it is) in raw, ImageDisk, Teledisk, and CopyIIPC+Snatchit format. Surprisingly, this image is bootable on an IBM PC, or an IBM PC emulator. Some of the utilities on the disk, however, are specific to Zenith hardware.
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