Source : Free On-Line Dictionary of Computing

SPL
     
        1. Synchronous Programming Language.  A DSP language.
        "Introduction to the SPL Compiler", Computalker Consultants,
        1986.
     
        2. Space Programming Language.  Realtime language used by the
        US Air Force for aerospace software.  Aka SPL/J6.  Similar to
        JOVIAL.  "Space Programming Language Development", SAMSO TP
        70-325, System Development Corp (Sep 1970).  (See CLASP).
     
        3. System Programming Language.  HP, 1977.  An ALGOL-like
        language for the HP3000 computer allowing inline assembly
        code.  MPE, the OS for the HP3000 was written in SPL.
        Pub.No.30000-90024, HP.  See also {SPLash!}.
     
        4. Systems Programming Language.
     
        PRIME Computer, 80's.  A variant of PL/I used on PRIME
        computers.  PL/I subset G, less I/O plus a few extensions.
        SPL User's Reference Guide, Prime.  (See PL/P.)
     
        5. Systems Programming Language.
     
        A PL/I subset/extension for the P1000.
     
        D.B. Wortman, U Toronto.
     
        Philips Data Sys, Netherlands, 1971.
     
        Symbolic constants, pointer arithmetic, inline assembly code.
        Used to implement compilers, operating systems, and database.
     
        ["Experiences With SPL", J. Klunder in Machine Oriented Higher
        Level Languages, W. van der Poel, N-H 1974, pp. 385-393].
     
        [Can 4 and 5 be the same?]
     
        6. Student Programming Language.
     
        A translator-interpreter for a dialect of {PL/I}.
     
        7. {Set Priority Level}
     
        [{Jargon File}]
     
        (1995-02-07)