The TOPS-20 PASCAL compiler can be invoked with either the standard @COMPILE command or with @PASCAL. The standard extension for Pascal source files is .PAS. @LOAD, @SAVE, @RUN, @EXECUTE can be used as normal (see TOPS-20 Compilers Tutorial).

• TOPS-20 PASCAL Primer, Digital Equipment Corporation, September 1983.
• TOPS-20 PASCAL Language Manual, Digital Equipment Corporation, September 1983.