Unisys/Uniscope Terminal System
The protocol name for the communication protocol to unisys mainframes.
see
http://www.jbmelectronics.com/product/unis.htm for details.
Uniscope is a proprietary polled protocol developed by Unisys (Sperry) that uses sync transmission method and multipoint addressing. Each Uniscope terminal has a unique, two-level address: a RID (Remote Identifier) and a SID (Station Identifier).The terminal only answers polls with the correct address. If several terminals are attached to a Terminal Multiplexer, the terminal will answer polls with the General or specific RID and a General SID. The MUX then determines which terminal can send to the network.If the terminal is configured for Screen Bypass (dual screen), the terminal will define a separate screen buffer for two or more consecutive SID Addresses. Each screen buffer can be accessed by the host or through the keyboard. The second screen is often used for background printing.