Thoroughbred/OS 6.6.2-6
Released in 1987 by Concept Omega Corporation
For IBM PC compatibles

Image quality: Used/Installed

Originally released in 1983, Thoroughbred/OS is a unique BASIC 
oriented multi-tasking multi-user operating system for the IBM XT and 
compatible systems.

It is designed to run on a dedicated system that powers a number of
serial terminals. It can power up to 16 terminals with the right
serial expansion cards. All of the applications are written in BASIC,
and the shell itself is an interactive basic interpreter.

Installation requires a hard disk drive. Thoroughbred/OS requires its
own partition and proprietary file system. Read the installation
manual for details.

IMPORTANT: This software is copy protected. It requires a serial
dongle called the "Thoroughbred Passport". Without this dongle you
are only allowed to start the OS seven times before it refuses.

Important: These disks are non-DOS disks and can only be used with 
Thoroughbred/OS. They will not open in tools like WinImage.

The archive contains the following disks:

disk01 - THOROUGHBRED/OS SYSTEM (T/OS)
disk02 - THOROUGHBRED/OS SUPPLEMENTAL (ULIB)
disk03 - THOROUGHBRED/OS DIAGNOSTIC (DISPAK)
disk04 - THOROUGHBRED/OS TAPE DRIVER