Nord Programming Language: Difference between revisions
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{{Infobox programming language |
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| name = Nord Programming Language |
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| logo = <!-- Filename only --> |
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| logo caption = |
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| screenshot = <!-- Filename only --> |
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| paradigm = [[Procedural programming|Procedural]], [[Imperative programming|imperative]] |
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| family = |
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| designer = <!-- or: | designers = --> |
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| developer = [[Norsk Data]] |
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| released = {{Start date and age|1974}}<!-- If known, add |mm|dd|df=yes --> |
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| latest release version = Final |
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| latest release date = <!-- {{Start date and age|198y|mm|dd|df=yes}} --> |
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| typing = [[Static type|Static]], [[Strong and weak typing|strong]] |
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| scope = [[Scope (computer science)|Lexical]] |
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| programming language = |
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| discontinued = Yes |
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| platform = Norsk Data [[minicomputer]]s |
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| operating system = [[Sintran III]] |
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| license = [[Proprietary software|Proprietary]] |
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| website = <!-- {{url|www.example.com}} --> |
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}} |
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'''Nord Programming Language''' ('''NPL'''), is a [[Procedural programming|procedural]] [[programming language]] by the Norwegian [[minicomputer]] manufacturer [[Norsk Data]]. It shipped as a standard component of the [[operating system]] [[Sintran III]]. |
'''Nord Programming Language''' ('''NPL'''), is a [[Procedural programming|procedural]] [[programming language]] by the Norwegian [[minicomputer]] manufacturer [[Norsk Data]]. It shipped as a standard component of the [[operating system]] [[Sintran III]]. |
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Revision as of 23:18, 25 December 2021
 | This article needs additional citations for verification. (December 2021) |
| Paradigm | Procedural, imperative |
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| Developer | Norsk Data |
| First appeared | 1974 |
| Final release | Final
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| 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.