Intel 9800758-02 Save, RUN line numberlstring expression ,F, Line number RUN filename, 60 END

Commands and Statements BASIC-SO

RUN

The RUN command starts the execution of a program or a set of programs. If you enter RUN alone, it executes the current program starting at the lowest line number. If you enter RUN followed by a line number, it executes the current program start- ing at the specified line number. If you enter RUN followed by a string variable representing a file name, it looks for a file with that name on disk, loads its contents into memory, and executes the program starting at the lowest line number. With the latter form, an "F" may be added to leave files open. Otherwise, they are closed. Files can be left open only if the program was saved in non-ASCII format. The RUN command erases all variables before executing the program.

RUN [line numberlstring expression [,F]]

The RUN command may also be used as a program statement to chain programs together. The form of the RUN command that performs this function is:

line number RUN "filename"

This feature is especially useful for the execution of programs that are larger than can fit into memory as one large program. The RUN command initializes all variables to zero, however, so if you want to pass some variables to the next pro- gram, print them out to a buffer file (see the section on "Random Disk 110" for details) during execution of the first program. Then read them, when needed, into subsequent programs.

In the example below, the (tC) character halts program execution.

LIST

10INPUT A,B,C

20 PRINT (A+B+C+)/3

30PRINT"NEXT SERIES"

40PRINT: PRINT: PRINT

50GOTO 10

60END

RUN

?41,12,6

19.6

NEXT SERIES

?tC (This control character interrupts execution)

BREAK IN 10 OK

RUN 30 NEXT SERIES

?

SAVE

The SAVE command stores the current program on disk with the specified filename. The addition of a comma and an A saves the file in ASCII format. Note that if a file with the specified name exists, it will be replaced by the new file. Any valid ISIS-II file name may be used. You can use a string expression that resolves to an ISIS-II filename. For example, SAVE ":LP:", A will list the current program on the line printer. Refer to the ISIS-II User's Guide for more information on ISIS- II device filenames.

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