The SIT file extension is related to Load-and-Go Fortran-77 Compiler for DEC PDP-10 computers. The .sit file stores sources for compiler.
There are 3 other file types using
the SIT file extension!
.sit - StuffIt archive format [common]
.sit - IRT Cronista infrared image file
.sit - Sinclair ZX Spectrum emulator snapshot file
SIT file extension - PDP-10 Fortran-77 compiler source file
What is sit file? How to open sit files?
File type specification:
The SIT file extension is associated with Fortran-77 compiler (Load-and-Go Fortran-77 Compiler) developed for DEC PDP-10 mainframe computers developed by Steven's Institute of Technology.
The .sit file stores sources for compiler.
The PDP-10 was a mainframe computer manufactured by Digital Equipment Corporation (DEC) from the late 1960s on; the name stands for "Programmed Data Processor model 10". It was the machine that made time-sharing common; it looms large in hacker folklore because of its adoption in the 1970s by many university computing facilities and research labs, the most notable of which were MIT's AI Lab and Project MAC, Stanford's SAIL, Computer Center Corporation (CCC), and Carnegie Mellon University.
The PDP-10 architecture was an almost identical version of the earlier PDP-6 architecture, sharing the same 36-bit word length and slightly extending the instruction set (but with improved hardware implementation). Some aspects of the instruction set are unique, most notably the "byte" instructions, which operated on arbitrary sized bit-fields (at that time a byte was not necessarily eight bits).