TOPS-20 PASCAL Language Manual - Bitsavers

USING PASCAL ON TOPS-20
After planning the progr~m, you use an editor to create a file that
contains the source statements. You use a text editor to create a
source file. You can use EDIT, TV, or any other text editor to create
the source file.
For example, to create a PASCAL program that has the file name EXAMPL
and a file type of PAS, you can issue the EDIT command as follows:
(~EDIT EXAMF'L... PAS ~~
Input: EXAMPL.PAS
O():lOO
If this is a new file, an additional message is displayed indicating
that a new file is being created. Because the EDIT command does not
assume a file type, you must include the file type as part of the file
name. The EDIT command runs the TOPS-20 default editor EDIT. The
line number (00100) prompt indicates that EDIT is ready to accept
input. For information on how to use EDIT, see the TOPS-20 EDIT
User's Guide.
You can also use any other editor to which you have access, for
exampJe, the TV editor. To use TV, you can either type TV to TOPS-20,
or you can define the logical name EDITOR: to be SYS:TV.EXE. For
more information about the use of TV, refer to the TOP§-20 TV Edit.or
Manual.
After the program is created and edited, it is ready to be compiled.
8.4 COMPILING A PROGRAM
After creating a PASCAL source program, you compile it. At compile
time, you specify the source filers) and indicate any qualifiers you
wish to use.
Optionally, the compiler produces one or more object files, which are
input to LINK, and one or more listing files. The listing files
contain source-code listings, information about compilation errors,
and optional items such as cross-reference listings.
8.4.1 The PASCAL Command
To compile a source program, specify the PASCAL command and press the
RETURN key. TOPS-20 then returns the PASCAL prompt, at which point
you specify the file name and any switches.
@PASCALG0
PASCAL)source-filename U/switch(es)TI ~)
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