Babbage (programming language)
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For other uses, see Babbage (disambiguation).
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| Paradigm(s) | procedural, structured, High-level assembler |
|---|---|
| Appeared in | around 1971 |
| Stable release | 308 |
| Influenced by | BCPL |
| OS | COS, GEC DOS, OS4000 |
Babbage is the high level assembly language for the GEC 4000 series minicomputers.[1] It was named after Charles Babbage, an English computing pioneer.
[edit] Example
PROCESS CHAPTER FACTORIAL
ENTRY LABEL ENTRYPOINT
LITERAL TO = 4 // Assume using the default proforma
EXTERNAL ROUTINE
OPEN,
PUT,
CLOSE,
TOCHAR
VECTOR [0,19] OF BYTE ANSWER = "factorial x = xxxxxx"
HALF COUNT
HALF VALUE
FULL RESULT
//******************************************************************************
ROUTINE FACT(VALUE)
// return factorial of RA.
VALUE => RESULT
WHILE DECREMENT VALUE GT //0// DO
<<
RESULT * VALUE => RESULT
>>
RETURN(RESULT)
END
//******************************************************************************
ENTRYPOINT:
OPEN(TO, 1)
// Print factorials for numbers 1 through 9
1 => RA
REPEAT
<<
RA => COUNT
FACT(RA) => RA
TOCHAR(RA, 7, ANSWER + 13)
TOCHAR(COUNT, 2, ANSWER + 9)
PUT(TO, 20, ANSWER)
COUNT + 1 => RA
>>
WHILE RA LT 10
CLOSE(TO)
STOP(0)
END
//******************************************************************************
[edit] See also
[edit] References
- ^ Salomon, David (1992). Assemblers and Loaders. Ellis Horwood. pp. 184–185. ISBN 0130525642. http://www.scribd.com/doc/7326575/Assembly-Language.
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