The IBM 1401 Symbolic Programming System (SPS) was an
assembler that was developed by
Gary Mokotoff
Gary Mokotoff (born April 26, 1937) is an author, lecturer, and Jewish genealogy researcher. Mokotoff is the publisher of '' AVOTAYNU, the International Review of Jewish Genealogy,'' and is the former President of the International Association of ...
, IBM Applied Programming Department, for the
IBM 1401 computer, the first of the
IBM 1400 series. One source indicates that "This programming system was announced by IBM with the machine."
1401 History
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SPS-1 could run on a low-end machine with 1.4K memory, SPS-2 required at least 4K memory.
:SPS-1 punched one card for each input instruction in its first pass and this deck had to be read during pass 2. At the University of Chicago and many other locations, SPS-1 was replaced by assemblers taking advantage of the commonly available 4K memory configuration to pack the output of pass one into several instructions per card. Other assemblers were written which placed the pass one output into memory for small programs.
As the 1400 series matured additional assemblers, programming languages and report generators became available, replacing SPS in most sites.
See also
* Autocoder
Autocoder is any of a group of assembly language, assemblers for a number of IBM computers of the 1950s and 1960s.
The first Autocoders appear to have been the earliest assemblers to provide a Macro (computer science), macro facility.
Terminolo ...
* FARGO (programming language)
FARGO ( fourteen-o-one automatic report generation operation) was the predecessor to the RPG programming language. FARGO was more of a utility program than a programming language, whereas RPG had a program generation process that produced an exec ...
References
External links
IBM 1401 Symbolic Programming Systems: SPS-1 and SPS-2, C20-1480-0
*"
'" by Tom Van Vleck includes a description of an operating environment including 1401 SPS machines.
*
Assembly languages
1401 Symbolic Programming System
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