Nord Programming Language: Difference between revisions
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'''Nord Programming Language''' | {{Short description|Procedural programming language}} | ||
{{Infobox programming language | |||
| name = Nord Programming Language | |||
| logo = <!-- Filename only --> | |||
| logo caption = | |||
| screenshot = <!-- Filename only --> | |||
| screenshot caption = | |||
| paradigm = [[Procedural programming|Procedural]], [[Imperative programming|imperative]] | |||
| family = | |||
| designer = <!-- or: | designers = --> | |||
| developer = [[Company:Norsk Data|Norsk Data]] | |||
| released = {{Start date and age|1974}}<!-- If known, add |mm|dd|df=yes --> | |||
| latest release version = Final | |||
| latest release date = <!-- {{Start date and age|198y|mm|dd|df=yes}} --> | |||
| typing = Static, [[Strong and weak typing|strong]] | |||
| scope = [[Scope (computer science)|Lexical]] | |||
| programming language = | |||
| discontinued = Yes | |||
| platform = Norsk Data [[Minicomputer|minicomputer]]s | |||
| operating system = [[Software:Sintran III|Sintran III]] | |||
| license = [[Proprietary software|Proprietary]] | |||
| file ext = | |||
| file format = <!-- or: | file formats = --> | |||
| website = <!-- {{url|www.example.com}} --> | |||
| implementations = | |||
| dialects = | |||
| influenced by = | |||
| influenced = | |||
}} | |||
'''Nord Programming Language''' ('''NPL'''), is a [[Procedural programming|procedural]] [[Programming language|programming language]] by the Norwegian [[Minicomputer|minicomputer]] manufacturer [[Company:Norsk Data|Norsk Data]]. It shipped as a standard component of the [[Operating system|operating system]] [[Software:Sintran III|Sintran III]]. | |||
The language was also used to implement | The language was also used to implement Sintran III: the core and [[File system|file system]] of which are written in NPL, as was the NPL [[Compiler|compiler]], and some core applications early on, until the release of [[High-level programming language|high-level programming language]] named [[PLANC]]. Then, the [[Linker (computing)|linker]] and other software were rewritten in PLANC. | ||
The NPL compiler was also special in that it did not | The NPL compiler was also special in that it did not emit [[Object code|object code]] as most compilers do. Instead it emitted an [[Intermediate representation|intermediate representation]], in the form of [[Assembly language|assembly language]] code, which then had to be assembled using the [[Software:Norsk Data Assembler|Norsk Data Assembler]]. | ||
The registers of the CPU were available in NPL as predefined variables. Thus | The registers of the CPU were available in NPL as predefined [[Variable (computer science)|variables]]. Thus could be written: | ||
X + T =: A | X + T =: A | ||
and the compiler would | and the compiler would emit: | ||
COPY SX DA | COPY SX DA | ||
RADD ST DA | RADD ST DA | ||
Functions could be declared with multiple entry | [[Subroutine|Functions]] could be declared with multiple [[Entry point|entry point]]s: | ||
FUNC FUN1, FUN2 | FUNC FUN1, FUN2 | ||
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END | END | ||
FUN1 could be called to set T to 1 before falling into FUN2 or T could be set to something else and call FUN2. If T register specified which file handle to write to then either FUN1 could be called to always output to terminal or T could be specified to handle a file | <code>FUN1</code> could be called to set <code>T</code> to <code>1</code> before falling into <code>FUN2</code> or <code>T</code> could be set to something else and call <code>FUN2</code>. If <code>T</code> register specified which file handle to write to, then either <code>FUN1</code> could be called to always output to terminal or <code>T</code> could be specified to handle a file in <code>T</code> and call <code>FUN2</code> to output to that file. | ||
{{Norsk Data}} | |||
[[Category:Procedural programming languages]] | [[Category:Procedural programming languages]] | ||
{{Sourceattribution|Nord Programming Language}} | {{Sourceattribution|Nord Programming Language}} | ||
Latest revision as of 07:50, 22 May 2026
Short description: Procedural programming language
| Paradigm | Procedural, imperative |
|---|---|
| Developer | Norsk Data |
| First appeared | 1974 |
| Final release | Final
|
| Typing discipline | Static, strong |
| Scope | Lexical |
| Platform | Norsk Data minicomputers |
| OS | Sintran III |
| License | Proprietary |
Nord Programming Language (NPL), is a procedural programming language by the Norwegian minicomputer manufacturer Norsk Data. It shipped as a standard component of the operating system Sintran III.
The language was also used to implement Sintran III: the core and file system of which are written in NPL, as was the NPL compiler, and some core applications early on, until the release of high-level programming language named PLANC. Then, the linker and other software were rewritten in PLANC.
The NPL compiler was also special in that it did not emit object code as most compilers do. Instead it emitted an intermediate representation, in the form of assembly language code, which then had to be assembled using the Norsk Data Assembler.
The registers of the CPU were available in NPL as predefined variables. Thus could be written:
X + T =: A
and the compiler would emit:
COPY SX DA RADD ST DA
Functions could be declared with multiple entry points:
FUNC FUN1, FUN2 FUN1: T := 1 FUN2: code here END
FUN1 could be called to set T to 1 before falling into FUN2 or T could be set to something else and call FUN2. If T register specified which file handle to write to, then either FUN1 could be called to always output to terminal or T could be specified to handle a file in T and call FUN2 to output to that file.
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