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Unisys A6 A-series mainframe system startup

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Uploaded by on Oct 30, 2011

This video from Larry Ramsey (used with permission).
Shows the cold startup of a Unisys A6 system running Unisys MCP. The connected terminal is a Unisys T27.

The Unisys A1, A4, A6 and System 80/7E were essentially the same base hardware with dual SCAMP processors. System 80 runs OS/3 but with different microcode loaded onto SCAMP (Single-Chip-A-series-Mainframe-Processor).

I collect old Unisys machines from anywhere on the planet, so if anyone has one please email me nw@retroComputingTasmania.com

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Science & Technology

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Creative Commons Attribution license (reuse allowed)

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  • Cool

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