GOSUB
PURPOSE:
To transfer program execution to a subroutine while saving the
memory address of the statement following the GOSUB on the run time stack.
STATEMENT SYNTAX:
stno GOSUB stno
EXAMPLE:
100 GOSUB 8000
200 GOSUB MYSUB
NOTES:
A subroutine is a series of SM-32 program statements which may be called by a
GOSUB command from any point in the program.
The subroutine itself may contain any valid SM-32 command and may
contain any number of statements. The subroutine has access to
all the same variables as the caller. If local variables as required use the
CALL by line# command.
When the GOSUB command is executed, the memory address of the
next statement is saved on the run time stack. When subroutine processing
is completed (via the RETURN command), the run time stack is accessed to
obtain and remove this statement address from the run time stack.
See the EXITTO command for abnormal
exit from a subroutine.