Statements (61)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:architecture
|
| gptkbp:addressed |
multiple addressing modes
|
| gptkbp:architectural_style |
influenced RISC architectures
|
| gptkbp:architecture |
CISC
|
| gptkbp:bus_connections |
Unibus and QBUS
|
| gptkbp:cache_size |
some models have cache memory
|
| gptkbp:community_support |
active user community
|
| gptkbp:compatibility |
supports various operating systems
backward compatibility with earlier models |
| gptkbp:competitors |
competed with IBM System/370
|
| gptkbp:data_bus_width |
32-bit data bus
32-bit control bus |
| gptkbp:data_type |
integer, floating-point, character
|
| gptkbp:designed_by |
gptkb:Digital_Equipment_Corporation
|
| gptkbp:development |
1970s to 1990s
|
| gptkbp:development_tools |
available development tools
|
| gptkbp:emulation |
VAX emulators available
can emulate PDP-11 instructions various emulation tools exist |
| gptkbp:end_of_life |
phased out in favor of newer architectures
|
| gptkbp:first_introduced |
gptkb:1977
|
| gptkbp:has_documentation |
extensive documentation available
|
| gptkbp:has_programs |
assembly language available
|
| gptkbp:has_units |
yes
|
| gptkbp:historical_significance |
important in computing history
|
| https://www.w3.org/2000/01/rdf-schema#label |
VAX processors
|
| gptkbp:input_output |
supports various I/ O devices
|
| gptkbp:instruction_set |
gptkb:VAX_ISA
variable-length instructions complex instruction set |
| gptkbp:interrupts |
supports hardware interrupts
|
| gptkbp:legacy |
influenced later architectures
still in use in some legacy systems |
| gptkbp:market_segment |
mid-range computers
|
| gptkbp:memory_type |
32-bit
|
| gptkbp:multitasking |
supports multitasking
|
| gptkbp:network |
supports networking protocols
|
| gptkbp:notable_models |
gptkb:VAX_11/780
gptkb:VAX_11/750 gptkb:VAX_4000 |
| gptkbp:notable_programs |
gptkb:VAX_BASIC
gptkb:VAX_C gptkb:VAX_Fortran gptkb:VAX_Pascal |
| gptkbp:notable_users |
gptkb:NASA
universities government agencies |
| gptkbp:operating_system |
gptkb:VMS
gptkb:Open_VMS |
| gptkbp:performance |
high for its time
|
| gptkbp:power_consumption |
varied by model
|
| gptkbp:production_years |
2000s
|
| gptkbp:programming_language |
supports multiple programming languages
|
| gptkbp:ram |
supports virtual memory
|
| gptkbp:registration |
16 general-purpose registers
|
| gptkbp:successor |
Alpha architecture
|
| gptkbp:used_in |
minicomputers
|
| gptkbp:user_base |
scientific and engineering communities
|
| gptkbp:bfsParent |
gptkb:VAX_bus
gptkb:DECwindows_graphical_user_interface |
| gptkbp:bfsLayer |
6
|