PDP-11/73

The PDP-11/73[1][2] (strictly speaking, the MicroPDP-11/73) was the third generation of the PDP-11 series of 16-bit minicomputers produced by Digital Equipment Corporation to use LSI processors. Introduced in 1983, this system used the DEC J-11 chip set and the Q-Bus, with a clock speed of 15.2 MHz.

The 11/73 (also known as the KDJ11A) is a dual height module with on board bootstrap, cache and bus interface. From a speed perspective it suffered from accessing memory over the Q-bus rather than the private memory interconnect bus adopted by the later PDP-11/83.

References
  1. KDJ11-A CPU Module User's Guide, Digital Equipment Corporation
  2. Chapter 4, Microcomputer Products Handbook, Digital Equipment Corporation 1985.


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