not really.

pdf

Summary

AT&T/Teletype 5620 Dot Mapped Display Terminal

The 5620 was the first commercial version of Rob Pike’s BLIT terminal. The original BLIT design used a common Motorola 68000 microprocessor. Since Western Electric, an AT&T subsidiary, was in the microprocessor business, the 5620 used a Western Electric WE32000 microprocessor instead. Later models, the 630 and 730, reverted to the 68000.

Specs

   * 15 " diagonal screen (10.24" x 8" visible)
   * 1024 x 800 dots (100 dots/inch horizontal and vertical)
   * High persistance P39 green phosphor
   * BELLMAC-32 microprocessor based 
          - Full 32-bit non-multiplexed data and address paths
          - Large instruction set
          - Virtual memory capability with 4 levels of protection
   * 256K RAM, 64K EPROM
   * Low-profile (30 mm) keyboard with numeric pad and 8 PF keys
   * Mouse
   * UNIX (System V)-based software
          - Multiplexor which provides up to six concurrent `windows'
                 of arbitrary size on the screen, each appearing to
                 the UNIX host as a separate virtual terminal. 
                 Optional downloaded terminal process under control
                 of terminal operating system associated with each
                 window.
          - Mouse-based text editor
          - BELLMAC software development system
                 - C cross compiler and tools
                 - Terminal debugger highly integrated with C compiler
                 - Downloader
          - Tektronix 4014 emulation
          - Font Editor
          - TROFF preview facility
          - Picture editor produces TROFF input text for preparing
            document figures.

Sources

http://www.anonymous-insider.net/unix/research/1983/0624.html

http://www.brouhaha.com/~eric/retrocomputing/att/5620/5620_faq.html