T.VAR FINDER 128
FILE INFORMATION
FILENAME(S): T.VAR FINDER 128
FILE TYPE(S): PRG
FILE SIZE: 3.6K
FIRST SEEN: 2025-11-30 18:12:17
APPEARS ON: 1 disk(s)
FILE HASH
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FOUND ON DISKS (1 DISKS)
| DISK TITLE | FILENAME | FILE TYPE | COLLECTION | TRACK | SECTOR | ACTIONS |
|---|---|---|---|---|---|---|
| LOADSTAR 45 S 1 | T.VAR FINDER 128 | PRG | Sailor, Ganheden | 14 | 5 | DOWNLOAD FILE |
FILE CONTENT & ANALYSIS
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..^U:CBM.. VARIABLE FINDER 128.
. BY KEVIN OWENS.. EVERY
BASIC PROGRAMMER HAS ASKED.HIMSELF THESE
TWO QUESTIONS, "WHAT.SHALL I CALL THIS
NEW VARIABLE?" AND."HAVE I USED THIS VAR
IABLE BEFORE?"..SINCE ONLY THE FIRST TWO
CHARACTERS.OF THE VARIABLE NAME ARE CON
SIDERED.BY THE BASIC INTERPRETER, IT WON
'T DO.TO HAVE THE VARIABLES "COLOUR" AND
."COUNTER" IN THE SAME PROGRAM. THE.INT
ERPRETER SEES THEM BOTH AS "CO"......
WITH VARIABLE FINDER 128.INSTALLED IN M
EMORY, YOU CAN USE A.SIMPLE SYSTEM CALL
TO HAVE ALL YOUR.VARIABLES LISTED TO THE
SCREEN OR TO.YOUR PRINTER. BY USING A
DIFFERENT.PARAMETER, YOU CAN EVEN LIST T
HE.LINES NUMBERS WHERE EACH VARIABLE.APP
EARS... THERE IS A VERY GOOD, TECHNIC
AL.ARTICLE ON THE INTERNAL WORKINGS OF.V
ARIABLE FINDER 128 IN THE FEBRUARY.ISSUE
OF COMMODORE MAGAZINE. KEVIN.OWENS EXP
LAINS IN DETAIL HOW HE.MANAGED MEMORY AN
D MANIPULATED THE.POINTERS IN THIS RELAT
IVELY UNCHARTED.REGION OF THE 128 ROM.
HACKERS MAY.WANT TO CHECK OUT HIS ARTICL
E... YOU DON'T NEED TO KNOW ALL OF TH
E.ARCANA OF THE PROGRAM TO USE IT,.THOUG
H. WE HAVE SUPPLIED YOU WITH.THE "LOADE
R" PROGRAM, WHICH CREATES.THE TWO ML FIL
ES THAT DO ALL THE.WORK. WE HAVE ALSO I
NCLUDED THE TWO.FILES ALREADY MADE AND S
AVED. IF YOU.WANT TO ADD VARIABLE FINDE
R 128 TO.YOUR UTILITY DISK, YOU CAN EITH
ER.LOAD "VAR FINDER 128", 8 AND RUN IT,.
OR USE A FILE COPIER TO COPY THE TWO.ML
FILES TO YOUR DISK. THE FILES ARE.CALLE
D "FINDVAR.1.0C00" AND."FINDVAR.2.FC00".
...... ONCE THE TWO FILES ARE IN MEMO
RY,.ANYTIME YOU WANT TO SEE A LIST OF TH
E.VARIABLES YOU'VE USED IN A PROGRAM,.SI
MPLY LOAD THE PROGRAM AND ENTER SYS.3072
,1. ALL THE VARIABLES WILL BE.LISTED.
THE NUMBER, 3072, IS EQUAL.TO $0C00 IN H
EX, SO YOU CAN USE THE.COMMAND SYS DEC("
C00"),1 IF YOU.FORGET THE DECIMAL NUMBER
... WHY THE EXTRA ",1" AT THE END?.IF
THIS PARAMETER IS ONE, THEN ONLY.THE VA
RIABLES WILL BE LISTED. IF THE.PARAMETE
R IS ZERO, THEN, NOT ONLY THE.VARIABLES,
BUT THE LINE NUMBERS FOR.EACH VARIABLE
ARE LISTED. THE SYNTAX.IS SYS 3072,0 OR
SYS DEC("C00"),0.... IF YOU ARE IN A
BANK OTHER THAN.BANK 0 THEN YOU SHOULD P
REFACE THE.SYS COMMAND WITH BANK 0...
TO LIST YOUR VARIABLES AND/OR.LINE NUMB
ERS TO YOUR PRINTER, ENTER.THIS COMMAND
BEFORE THE SYSTEM CALL:.. OPEN3,4,0:CM
D3..IF YOU WANT UPPER/LOWER CASE, ENTER.
THIS:.. OPEN3,4,7:CMD...... SOME PR
OGRAMMERS LIKE TO USE LONG.VARIABLE NAME
S TO MAKE THEIR LISTINGS.MORE READABLE.
THIS ALSO MAKES IT.EASIER TO INADVERTAN
TLY USE NAMES.LIKE "COUNTER" AND "COLOUR
" IN THE.SAME PROGRAM. VARIABLE FINDER
128.WILL LIST THESE VARIABLES SEPARATELY
.BUT WILL PUT AN ASTERISK BEFORE AND.AFT
ER THE LINE NUMBER TO WARN YOU.THAT THER
E IS A CONFLICT IN NAMES..BY THE WAY, TH
E REASON YOU SHOULD.ALWAYS SPELL "COLOUR
" THE BRITISH WAY.IS BECAUSE THE INTERPR
ETER WILL SEE.THE "OR" IN "COLOR" AS THE
BASIC.KEYWORD "OR" AND GIVE YOU A SYNTA
X.ERROR..... THERE ARE TWO THINGS TO
WATCH OUT.FOR WITH THIS PROGRAM. DON'T
USE.VARIABLE NAMES THAT ARE LONGER THAN.
FIFTEEN CHARACTERS. BESIDES CAUSING.THE
PROGRAM TO CRASH, IT'S.RIDICULOUS. MAK
E SURE BOTH ML FILES.ARE IN MEMORY BEFOR
E INVOKING THE.SYSTEM CALL. IF THE DISK
YOU'RE.WORKING ON DOESN'T HAVE BOTH FIL
ES ON.IT, YOU CAN SIMPLY RUN THE PROGRAM
."VAR FINDER 128" AND IT WILL CREATE.THE
FILES ON THE DISK AND PUT THE.DATA IN T
HE COMPUTER'S MEMORY........ THAT'S A
BOUT IT FOR VARIABLE.FINDER 128. ADD TH
IS TO YOUR 128.UTILITY DISK AND YOU'LL N
EVER HAVE TO.SEARCH THROUGH PAGES OF LIS
TINGS TO.FIND THAT ELUSIVE VARIABLE THAT
'S.BEEN BUGGING YOU SO MUCH...DISK FILES
THIS PROGRAM USES..VAR FINDER 128 F
INDVAR.1.0C00.FINDVAR.2.FC00 T.VAR F
INDER 128.. **** END OF TEXT ****
.
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