Virtue (software)

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Virtue is a virtual session manager running under IBM's VM operating system.

Product

Virtue, short for "virtual tube", was the first session manager commercially available for the VM environment on IBM

z/VSE MVS, z/OS, or other operating systems or applications such as CICS, Westi, or DUCS sessions. Virtue runs as a highly privileged CMS task, designed to accommodate model IBM 3270 monitors and their descendants.^[1]

Development

Product development occurred at III offices within Westinghouse Automation Intelligence division, Orlando, Florida, United States. Broad range in-depth testing was conducted at IBM's data center in Tampa, Florida, and the IBM lab in Böblingen, Germany. Although the package nominally ran as a highly privileged CMS session and utilized CMS services, it deployed an internal multitasking mechanism called a "subvisor", which queued and prioritized tasks to be done.^[1]

Marketing

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Westinghouse Electric acquired the marketing rights in various regions.

After release, a number of competing products entered the market, including MultiTerm and

IBM PC

References

^ ^a ^b Virtue User Manual, 1992

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