Radio Shack TRS-80 Model 4 - Page 253

MAIN PROGRAM
NUMBER RESERVED FOR SUBROUTINE HOOK
PROGRAM LINE
PROGRAM LINE
PROGRAM LINE
SUBROUTINE HOOK
BEGINNING OF SUBROUTINE
SUBROUTINE LINE
SUBROUTINE LINE
SUBROUTINE LINE
80 REM
90 REM LI NE
100 REM
110 REM
120 REM
130 END
And suppose the following subroutine, SUB/TXT, is stored on disk in
ASCII format:
90 GOSUB 1000
1000 REM
1010 REM
1020 REM
1030 REM
1040 RETURN
You can MERGE the subroutine with the main program with:
MERGE "SUB/T:n"
and the new program in memory is:
80
90
100
110
120
130
1000
1010
1020
1030
1040
REM
GOSUB
REM
REM
REM
END
REM
REM
REM
REM
RETURN
MA I N PROGRAM
1000 SUBROUTINE HOOK
PROGRAM LINE
PROGRAM LINE
PROGRAM LINE
BEGINNING OF SUBROUTINE
SUBROUTINE LINE
SUBr~OUT I NE LINE
SUBROUTINE LINE
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