PDP 11 Simulator Configuration - parsa/simh GitHub Wiki

The PDP-11 was the most popular 16-bit minicomputer. Introduced by DEC in 1970, it remained in active production until 1996. The PDP-11 family included many processor designs (photographs courtesy of Digital Equipment Corporation):

  • 1970: PDP-11/20 - first design (also PDP-11/15)
  • 1972: PDP-11/45 - first design with memory extension, instruction and data space, floating point (with fast bipolar memory, PDP-11/55)
  • 1972: PDP-11/05 (also PDP-11/10)
  • 1972: PDP-11/40 (also PDP-11/35)
  • 1975: PDP-11/04 - first single board design
  • 1975: PDP-11/34
  • 1975: PDP-11/70 - first design using cache memory
  • 1975: LSI-11 - first LSI design (also PDP-11/03, PDT150)
  • 1977: PDP-11/60
  • 1979: LSI-11/23 (F11)- second LSI design, first with floating point (also PDP-11/23, PDP-11/24, Pro 350)
  • 1981: PDP-11/44 - last TTL design
  • 1983: LSI-11/73 (J-11) - first CMOS design, last design (also PDP-11/53, PDP-11/73, PDP-11/74, PDP-11/83, PDP-11/84, PDP-11/93, PDP-11/94, Pro 380)
Option Description Capacity
CPU and memory KS10 1MW
IO bus dual Unibus
Console 8080-based front end processor
Paper tape PC11 paper tape reader and punch
Timer built in
Time of year clock TCU150 (from Digital Pathways)
Line printer LP20 line printer
Terminal multiplexor DZ11 terminal multiplexor 8-32 lines
Disk RH11/RM03, RM05 disk packs 67-256MB
RH11/RM80 non-removable disk 124MB
RH11/RP04 (RP05), RP06 disk pack 87-174MB
RH11/RP07 non-removable disk 516MB
Floppy disk RX211/RX02 floppy disk 512KB
Magnetic tape RH11/TU45 800/1600bpi 9 track magnetic tape
Card reader CD20 (CD11) card reader
Network DEUNA Ethernet interface