Difference between revisions of "PDP-11"

From Computer History Wiki
Jump to: navigation, search
(PDP-11 Models and notes)
(PDP-11 Models and notes)
Line 40: Line 40:
 
|[[PDP-11/44|11/44]] ||[[1979]] ||[[UNIBUS]] ||22-bit ||last non-LSI PDP-11
 
|[[PDP-11/44|11/44]] ||[[1979]] ||[[UNIBUS]] ||22-bit ||last non-LSI PDP-11
 
|-
 
|-
|[[PDP-11/23 PLUS|11/23+]] || [[1981]] November ||[[QBUS]] ||22-bit ||
+
|[[PDP-11/23 PLUS|11/23+]] || [[1981]] Nov ||[[QBUS]] ||22-bit ||
 
|-
 
|-
 
|[[PDP-11/73|11/73]] || [[1983]] ||[[QBUS]] ||22-bit ||first J-11 machine, 15MHz, integrated FPU, also first PMI PDP-11
 
|[[PDP-11/73|11/73]] || [[1983]] ||[[QBUS]] ||22-bit ||first J-11 machine, 15MHz, integrated FPU, also first PMI PDP-11

Revision as of 01:14, 16 May 2007

The PDP-11 is a series of computers introduced in 1970 by Digital Equipment Corporation (DEC).
A loaded PDP-11/23 PLUS

The machine word size was 16 bits. For more information, see PDP-11 architecture.

PDP-11 Models and notes

Model Introduced Bus Type Addressing Notes
11/20 1970 UNIBUS 16-bit
11/05 1972 UNIBUS 16-bit
11/10 1972 UNIBUS 16-bit
11/15 1972 UNIBUS 16-bit OEM model
11/40 1973 UNIBUS 18-bit
11/45 1973 UNIBUS 18-bit core memory
11/50 1975 UNIBUS 18-bit MOS memory
11/70 1975 UNIBUS 22-bit
11/03 1975 QBUS 16-bit first QBUS model, first F-11
11/34 1976 UNIBUS 18-bit
11/04 1976 UNIBUS 16-bit
11/55 1976 UNIBUS 18-bit fast bipolar memory
11/60 1977 UNIBUS 18-bit writable control store
11/23 1979 QBUS 18-bit or 22-bit
11/24 1979 UNIBUS 22-bit first UNIBUS model to use F-11 chip
11/44 1979 UNIBUS 22-bit last non-LSI PDP-11
11/23+ 1981 Nov QBUS 22-bit
11/73 1983 QBUS 22-bit first J-11 machine, 15MHz, integrated FPU, also first PMI PDP-11
11/53 1984 QBUS 22-bit S-box or standard qbus, integrated FPU
11/83 1986 QBUS 22-bit J-11 at 18MHz, integrated FPU
11/84 1986 UNIBUS 22-bit J-11 at 18MHz, integrated FPU, 768KiW memory
11/93 1990 QBUS 22-bit J-11 at 18MHz, integrated FPU, 2MiW onboard memory
11/94 1990 UNIBUS 22-bit J-11 at 18MHz, integrated FPU, 2MiW onboard memory