8bitfiles.net/archives

home *** CD-ROM | disk | FTP | other *** search

/ 8bitfiles.net/archives / archives.tar / archives / compuserve-file-archive / 01 New Uploads / P4UTIL.ZIP / DISKDOCR.SEQ < prev next >

Wrap

Text File | 1995-11-02 | 19.3 KB | 793 lines

─ISK ─OCTOR ├16 & ╨LUS/4 ├OMMODORE ┬USINESS ═ACHINES ╠IMITED ├┴╬┴─┴ ╧CTOBER 1984 ─ISK ─OCTOR ─OCUMENTATION ─ISK ─OCTOR ╔NSTRUCTION ═ANUAL ╘ABLE OF ├ONTENTS ├ONTENTS ╨AGE 1.0 ╔NTRODUCTION ................... 3 2.0 ╠OADING AND ╥UNNING ╔NSTRUCTIONS 4 3.0 ├OMMANDS ....................... 5 3.┴ ├HANGE BYTE UNDER CURSOR .. 5 3.┬ ╘EXT MODE ................. 5 3.├ ─RIVE TO ACCESS ........... 6 3.─ ╒NIT TO ACCESS ............ 6 3.┼ ┬LOCK ..................... 7 3.╞ ╔NCREMENT SECTOR............ 7 3.╟ ─ECREMENT SECTOR............ 7 3.╚ ╤UIT ...................... 8 3.╔ ╙TOP ...................... 8 3.╩ ╩UMP ...................... 8 3.╦ ╬EXT ...................... 8 3.╠ ╥EWRITE SECTOR ............ 9 3.═ ╨RINT THE SECTOR .......... 9 3.╬ ╚ELP ...................... 10 3.╧ ╞1 ........................ 10 3.╨ ╞4 ........................ 10 3.╤ ╞2 ........................ 11 3.╥ ╞5 ........................ 11 3.╙ ╞7 ........................ 11 4.0 ┼XAMPLES ....................... 12 PAGE 2 ─ISK ─OCTOR ─OCUMENTATION 1.0 ╔NTRODUCTION ╘HE OBJECTIVE OF THE PROGRAM '─ISK ─OCTOR' IS TO ALLOW EASY MANIPULATION OF DATA AND CORRECTION OF ERRORS ON FLOPPY DISKETTES. ╘HE OPERATION OF THE PROGRAM HAS INTENTIONALLY BEEN KEPT SIMPLE TO ALLOW MORE USERS THE ABILITY TO MAKE USE OF IT'S CAPABILITIES. ┴LTHOUGH THE USE OF THE PROGRAM HAS BEEN KEPT SIMPLE THE DATA THAT CAN BE ALTERED ON THE FLOPPY IS IN A SPECIFIC ORDER. ╧NE OF THE BEST SOURCES OF INFORMATION ABOUT HOW DATA IS WRITTEN AND STORED ON A FLOPPY DISKETTE IS THE MANUAL WHICH CAME WITH YOUR DISK DRIVE. ╘HIS PROGRAM HAS THE POWER TO RUIN DISKETTES AS WELL AS RECLAIM INFORMATION FROM THEM. ╔T IS FOR THIS REASON THAT WE STRONGLY SUGGEST YOU BECOME FAMILIAR WITH THE DIRECTORY STRUCTURE AND FILE CHAINING FORMAT COVERED IN YOUR DISK DRIVE MANUAL. ╘HROUGHOUT THIS MANUAL YOU WILL SEE '[RETURN]' THIS INDICATES THAT THE RETURN KEY SHOULD BE DEPRESSED. PAGE 3 ─ISK ─OCTOR ─OCUMENTATION 2.0 ╠OADING AND ╥UNNING ╔NSTRUCTIONS '─╔╙╦ ─╧├╘╧╥.╘┼─' WILL WORK ON THE ├OMMODORE 16 AND ├OMMODORE ╨LUS/4 COMPUTERS AND IS WRITTEN IN MACHINE LANGUAGE WITH A ONE LINE BASIC DRIVER. ╔N THIS WAY LOADING IS VERY SIMPLE AS FOLLOWS : ─╠╧┴─ "─╔╙╦ ─╧├╘╧╥.╘┼─" [RETURN] ╘HIS STATEMENT WILL LOAD THE PROGRAM INTO THE MEMORY SPACE NORMALLY OCCUPIED BY BASIC PROGRAMS. ╔F YOU WERE TO ASK FOR A '╠╔╙╘ [RETURN]' YOU WOULD SEE : 16 SYS (4128) ╘O START '─ISK ─OCTOR' TYPE IN '╥╒╬ [RETURN].' ┴T THIS POINT YOU WILL SEE A SCREEN WITH THE TITLE OF THE PROGRAM, A FEW INSTRUCTONS AND YOU ARE READY TO GO. ╘HERE ARE SEVERAL COMMANDS AND FUNCTIONS THAT ─ISK ─OCTOR CAN PERFORM. ╔F YOU ARE JUST GETTING STARTED AND WISH TO EXPERIMENT, USE A DISKETTE WHICH DOES NOT CONTAIN ANY VALUABLE INFORMATION. ┴LTERING INFORMATION ON THE DISKETTE CAN CORRUPT THE ENTIRE DISKETTE. ╘HE COMMANDS IN SECTION 3.0 OF THIS MANUAL WILL DETAIL WHAT EACH OF THE COMMANDS ARE CAPABLE OF DOING. ╔N EVERY COMMAND AS A PRECAUTION THE ╙╘╧╨ KEY WILL EXIT THE COMMAND WITHOUT THE FUNCTION OF THE COMMAND TAKING PLACE. ╬╧╘┼ : ─ISK ─OCTOR CAN IRREPARABLY MODIFY A DISKETTE'S DATA. PAGE 4 ─ISK ─OCTOR ─OCUMENTATION 3.0 ├OMMANDS 3.┴ '@' ├HANGE BYTE UNDER CURSOR ╘HE CHANGE BYTE UNDER CURSOR IS ENVOKED BY DEPRESSING THE '@' KEY. ╫HEN THE CHANGE BYTE COMMAND IS CALLED A PROMPT IS PRINTED IN THE MESSAGE BUFFER UNDER THE DATA BOX AS FOLLOWS : ├╚┴╬╟┼ ┬┘╘┼ ╬┼╫ ╓┴╠╒┼ [─/$╚]= ╘HE PROGRAM NOW WANTS YOU TO INPUT EITHER A DECIMAL VALUE BETWEEN 0-255 [RETURN] OR A HEXIDECIMAL VALUE BETWEEN 00-FF PRECEEDED BY A '$' FOLLOWED BY [RETURN]. ┴FTER INPUTTING THE VALUE THE PROGRAM WILL CHANGE THAT BYTE UNDER THE CURSOR ON THE SCREEN, CHANGE THIS CHARACTER'S COLOR TO RED AND CHANGE THE BYTE IN THE DISK DRIVE BUFFER. ╘HIS CHANGE WILL NOT BE WRITTEN TO THE FLOPPY DISKETTE UNTIL THE EXECUTION OF THE '╥ REWRITE' COMMAND DISCUSSED LATER IN SECTION 3.╠. ╘HE ├HANGE BYTE COMMAND CAN BE EXITED WITH THE USE OF THE ╙╘╧╨ KEY. 3.┬ '╘' ╘EXT MODE ╘HE TEXT MODE IS ENVOKED BY DEPRESSING THE 'T' KEY. ╫HEN THE TEXT MODE COMMAND IS CALLED THE SCREEN BORDER COLOR BECOMES ORANGE AND A PROMPT IS PRINTED IN THE MESSAGE BUFFER UNDER THE DATA BOX AS FOLLOWS : ╘┼╪╘ ═╧─┼ : ╨RESS ╥ETURN TO ┼XIT ╘HE PROGRAM NOW ALLOWS YOU TO ALTER THE DATA BY SIMPLY TYPING ON THE KEYBOARD. ─ATA MAY BE TYPED IN UPPER CASE OR LOWER CASE WITH REVERSE ON OR OFF. ┘OU MAY USE THE CURSOR KEYS TO POSITION THE CURSOR ANYWHERE IN THE DATA BOX. ┴S EACH BYTE IS TYPED THE BYTE IS CHANGED UNDER THE CURSOR ON THE SCREEN, THAT CHARACTER'S COLOR IS CHANGED TO RED AND THE BYTE IN THE DISK DRIVE BUFFER IS CHANGED. ┴S IN THE ├HANGE BYTE COMMAND THIS CHANGE WILL NOT BE WRITTEN TO THE FLOPPY DISKETTE UNTIL THE EXECUTION OF THE '╥ REWRITE' COMMAND DISCUSSED LATER IN SECTION 3.╠. ┴FTER STRIKING THE [RETURN] KEY TO EXIT THE ╘EXT MODE THE MESSAGE IS REMOVED FROM THE SCREEN AND THE BORDER COLOR RETURNED TO PURPLE. ╘HE ╘EXT MODE CAN ALSO BE EXITED BY USING THE ╙╘╧╨ KEY. PAGE 5 ─ISK ─OCTOR ─OCUMENTATION 3.0 ├OMMANDS 3.├ '─' ─RIVE TO ACCESS ╘HE ─RIVE COMMAND IS ENVOKED BY DEPRESSING THE 'D' KEY. ╫HEN THE DRIVE COMMAND IS CALLED THE CURSOR WILL BE FLASHING ON THE NUMBER TO THE RIGHT OF ─RIVE IN THE UPPER INFORMATION BOX. ┴T THIS POINT YOU HAVE SEVERAL OPTIONS. ╧NE OPTION IS TO ENTER A '0' OR A '1' TO SPECIFY THE DRIVE TO ACCESS. ┴NOTHER OPTION IS TO ENTER 'U' TO CHANGE THE UNIT THAT THE PROGRAM WILL ACCESS. ╘HE 'U' COMMAND IS DETAILED IN THE NEXT SECTION 3.─. ╚ELP CAN ALSO BE OBTAINED FROM THE DRIVE OPTION BY DEPRESSING THE '╚┼╠╨' KEY. ╔F THE NUMBER ALREADY CONTAINS THE VALUE YOU REQUIRE THEN SIMPLY STRIKE THE [RETURN] KEY AND THE PROGRAM WILL GO TO THE DISK DRIVE, GET THE DATA FROM THIS BLOCK AND DISPLAY IT ON THE SCREEN. ╘HE PROGRAM CAN ALSO BE EXITED BY USING THE ╙╘╧╨ KEY FROM THE DRIVE COMMAND. 3.─ '╒' ╒NIT TO ACCESS ╘HE ╒NIT COMMAND IS ENVOKED BY DEPRESSING THE 'U' KEY. ╫HEN THE UNIT COMMAND IS CALLED THE CURSOR WILL BE FLASHING ON THE NUMBER TO THE RIGHT OF '╒NIT' NEAR THE BOTTOM OF THE SCREEN. ╘HE UNIT CAN BE ANY NUMBER FROM 8 TO 15 INCLUSIVE. ╔F YOU HAVE A SECOND DRIVE CONNECTED AS UNIT 9 THEN THIS COMMAND WILL INSTRUCT '─ISK ─OCTOR' TO ACCESS THAT DISK DRIVE. ╔F THE NUMBER ALREADY CONTAINS THE VALUE YOU REQUIRE THEN SIMPLY STRIKE THE [RETURN] KEY. PAGE 6 ─ISK ─OCTOR ─OCUMENTATION 3.0 ├OMMANDS 3.┼ '┬' ┬LOCK ╘HE ┬LOCK COMMAND IS ENVOKED BY DEPRESSING THE 'B' KEY. ╫HEN THE BLOCK COMMAND IS CALLED THE CURSOR WILL BE FLASHING ON THE FIRST CHARACTER OF THE TWO DIGIT NUMBER TO THE RIGHT OF '╘RACK' IN THE UPPER INFORMATION BOX. ╘HE PROGRAM IS NOW WAITING FOR YOU TO INPUT A TRACK NUMBER. ┴FTER THE TRACK HAS BEEN INPUT THE CURSOR IMMEDIATELY MOVES TO THE TWO DIGIT NUMBER TO THE RIGHT OF '╙ECTOR' IN THE UPPER INFORMATION BOX. ╘HE PROGRAM IS NOW WAITING FOR YOU TO INPUT A SECTOR NUMBER. ╫HEN THE BLOCK HAS BEEN INPUT (IE. ╘RACK AND ╙ECTOR) THE PROGRAM WILL GO TO THE DISK DRIVE , GET THE DATA FROM THE NEW BLOCK AND DISPLAY IT ON THE SCREEN. ╘HE PROGRAM CAN ALSO BE EXITED BY USING THE ╙╘╧╨ KEY WHILE INPUTTING THE TRACK OR SECTOR. 3.╞ '+' ╔NCREMENT SECTOR ╘HE ╔NCREMENT SECTOR COMMAND IS ENVOKED BY DEPRESSING THE '+' KEY. ╫HEN THE INCREMENT SECTOR COMMAND IS CALLED THE YOU WILL SEE THE TWO DIGIT NUMBER TO THE RIGHT OF '╙ECTOR' IN THE UPPER INFORMATION BOX BECOME INCREMENTED BY ONE. ┴FTER THIS INCREMENT THE PROGRAM WILL GO TO THE DISK DRIVE , GET THE DATA FROM THE NEW BLOCK AND DISPLAY IT ON THE SCREEN. ╘HIS COMMAND IS USEFUL IF YOU WANT TO LOOK THROUGH ALL OF THE SECTORS IN A PARTICULAR TRACK. 3.╟ '-' ─ECREMENT SECTOR ╘HE ─ECREMENT SECTOR COMMAND IS ENVOKED BY DEPRESSING THE '-' KEY. ╫HEN THE DECREMENT SECTOR COMMAND IS CALLED THE YOU WILL SEE THE TWO DIGIT NUMBER TO THE RIGHT OF '╙ECTOR' IN THE UPPER INFORMATION BOX BECOME DECREMENTED BY ONE. ┴FTER THIS DECREMENT THE PROGRAM WILL GO TO THE DISK DRIVE , GET THE DATA FROM THE NEW BLOCK AND DISPLAY IT ON THE SCREEN. ╘HE DECREMENT COMMAND WILL ONLY DECREMENT THE SECTOR TO A VALUE OF 00. ╘HIS COMMAND IS USEFUL IF YOU WANT TO LOOK THROUGH ALL OF THE SECTORS IN A PARTICULAR TRACK. PAGE 7 ─ISK ─OCTOR ─OCUMENTATION 3.0 ├OMMANDS 3.╚ '╤' ╤UIT ╘HE ╤UIT COMMAND IS ENVOKED BY DEPRESSING THE 'Q' KEY. ╫HEN THE QUIT FUNCTION IS CALLED ALL OF THE DISK FILES ARE CLOSED AND CONTROL IS RETURNED TO DIRECT BASIC MODE. 3.╔ '╙╘╧╨' ╘HE ╙TOP COMMAND IS ENVOKED BY DEPRESSING THE '╙╘╧╨' KEY. ╘HIS COMMAND IS IDENTICAL TO THE ╤UIT COMMAND. ╫HEN THE STOP FUNCTION IS CALLED ALL OF THE DISK FILES ARE CLOSED AND CONTROL IS RETURNED TO THE DIRECT BASIC MODE. 3.╩ '╩' ╩UMP ╘HE ╩UMP COMMAND IS ENVOKED BY DEPRESSING THE 'J' KEY. ╫HEN THE ╩UMP COMMAND IS CALLED THE TRACK AND SECTOR FOR THE BLOCK ARE READ FROM THE BYTE UNDER THE CURSOR AND THE NEXT BYTE RESPECTIVELY. ╘HE PROGRAM WILL GO TO THE DISK DRIVE , GET THE DATA FROM THE NEW BLOCK AND DISPLAY IT ON THE SCREEN. ╘HIS COMMAND IS USEFUL WHEN FOLLOWING THE FORWARD LINKS OF A FILE STARTING FROM A DIRECTORY ENTRY. 3.╦ '╬' ╬EXT ╘HE ╬EXT COMMAND IS ENVOKED BY DEPRESSING THE 'N' KEY. ╫HEN THE ╬EXT COMMAND IS CALLED THE TRACK AND SECTOR FOR THE BLOCK ARE READ FROM BYTE 0 AND BYTE 1 RESPECTIVELY. ╘HE PROGRAM WILL GO TO THE DISK DRIVE , GET THE DATA FROM THE NEW BLOCK AND DISPLAY IT ON THE SCREEN. ╘HIS COMMAND IS VERY USEFUL WHEN FOLLOWING THE FORWARD LINKS OF A FILE. PAGE 8 ─ISK ─OCTOR ─OCUMENTATION 3.0 ├OMMANDS 3.╦ '╥' ╥EWRITE ┬LOCK TO ╞LOPPY ╘HE ╥EWRITE COMMAND IS ENVOKED BY DEPRESSING THE 'R' KEY. ╫HEN THE CHANGE BYTE COMMAND IS CALLED A PROMPT IS PRINTED IN THE MESSAGE BUFFER UNDER THE DATA BOX AS FOLLOWS : ╥┼╫╥╔╘┼ ┬╠╧├╦ ┴╥┼ ┘╧╒ ╙╒╥┼ [Y/N] ╘HE PROGRAM IS NOW WAITING FOR YOU TO ANSWER 'Y' TO CONTINUE. ╔F YOU ANSWER YES TO THIS PROMPT THE DATA FROM THE DATA BOX WILL BE WRITTEN TO THE FLOPPY DISKETTE IN IT'S PRESENT FORM WHETHER IT WAS ALTERED OR NOT. ╧F COURSE IF THE WRITE-PROTECT NOTCH IS COVERED THE ATTEMPT TO WRITE TO THE DISK WILL FAIL. ─EPRESSING ANY KEY (INCLUDING THE '╙╘╧╨' KEY) BUT THE 'Y' KEY WILL ABORT THE ╥EWRITE FUNCTION. 3.═ '╨' ╨RINT THE SECTOR ╘HE ╨RINT COMMAND IS ENVOKED BY DEPRESSING THE 'P' KEY. ╫HEN THE PRINT COMMAND IS CALLED A PROMPT IS PRINTED IN THE MESSAGE BUFFER UNDER THE DATA BOX AS FOLLOWS : ╚┼╪ ─╒═╨ ╘╧ ╨╥╔╬╘┼╥ ? [Y/N] ╘HE PROGRAM IS NOW WAITING FOR YOU TO ANSWER 'Y' TO CONTINUE. ╔F YOU ANSWER YES TO THIS PROMPT THE PRINTER WILL PRINT THE HEXIDECIMAL VALUES AND OF THE DATA BOX AS WELL AS AN ┴╙├╔╔ REPRESENTATION OF THE DATA. ╨RESSING ANY KEY OTHER THAN THE 'Y' KEY WILL ABORT THE PRINT FUNCTION. ╔F THERE IS A PROBLEM WITH THE PRINTER (IE. NOT CONNECTED OR TURNED OFF) A PROMPT WILL BE PRINTED IN THE MESSAGE BUFFER UNDER THE DATA BOX AS FOLLOWS : ╬╧ ╨╥╔╬╘┼╥ ├╧╬╬┼├╘┼─ ╔N THIS CASE DEPRESSING ANY KEY WILL RETURN YOU TO THE COMMAND MODE. PAGE 9 ─ISK ─OCTOR ─OCUMENTATION 3.0 ├OMMANDS 3.╬ '╚┼╠╨' ╚ELP ╘HE ╚ELP FUNCTION IS ENVOKED BY DEPRESSING THE '╚┼╠╨' KEY. ╫HEN THE ╚ELP FUNCTION IS CALLED A SCREEN FULL OF INFORMATION CONTAINING A QUICK SUMMARY WILL APPEAR. ─EPRESSING ANY KEY AT THIS POINT WILL RETURN YOU TO WHERE YOU LEFT. 3.╧ '╞1' ╞UNCTION ╦EY ╘HE ╞1 FUNCTION IS ENVOKED BY DEPRESSING THE '╞1' KEY. ╫HEN THE ╞1 FUNCTION IS CALLED, THIS WILL CAUSE THE PROGRAM TO READ AND DISPLAY ╘RACK 18 ╙ECTOR 00. ╘HIS IS A QUICK WAY TO DISPLAY THE FIRST BLOCK OF THE DIRECTORY FILE CHAIN. 3.╨ '╞4' ╞UNCTION ╦EY ╘HE ╞4 FUNCTION IS ENVOKED BY DEPRESSING THE '╞4' KEY ╫HEN THE ╞4 FUNCTION IS CALLED, THIS WILL CAUSE THE PROGRAM TO READ AND DISPLAY ╘RACK 18 ╙ECTOR 01. ╘HIS IS A QUICK WAY TO DISPLAY THE SECOND BLOCK OF THE DIRECTORY FILE CHAIN. PAGE 10 ─ISK ─OCTOR ─OCUMENTATION 3.0 ├OMMANDS 3.╤ '╞2' ╞UNCTION ╦EY ╘HE ╞2 FUNCTION IS ENVOKED BY DEPRESSING THE '╞2' KEY. ╫HEN THE ╞2 FUNCTION IS CALLED, THIS WILL CAUSE THE PROGRAM TO READ AND DISPLAY ╘RACK 01 ╙ECTOR 00. ╘HIS IS A QUICK WAY TO DISPLAY THE INNER MOST TRACK ON A 1541 DISK DRIVE. 3.╥ '╞5' ╞UNCTION ╦EY ╘HE ╞5 FUNCTION IS ENVOKED BY DEPRESSING THE '╞5' KEY. ╫HEN THE ╞5 FUNCTION IS CALLED, THIS WILL CAUSE THE PROGRAM TO READ AND DISPLAY ╘RACK 35 ╙ECTOR 00. ╘HIS IS A QUICK WAY TO DISPLAY THE OUTER MOST TRACK ON A 1541 DISK DRIVE. 3.╙ '╞7' ╞UNCTION ╦EY ╘HE ╞7 FUNCTION IS ENVOKED BY DEPRESSING THE '╞7' KEY. ╫HEN THE ╞7 FUNCTION IS CALLED, THIS WILL PUT THREE CARRIAGE RETURNS IN THE KEYBOARD BUFFER. ╘HIS IS USEFUL TO ACCEPT THE DEFAULTS FROM THE SCREEN WHEN INPUTTING THE BLOCK INFORMATION (IE. TRACK AND SECTOR). PAGE 11 ─ISK ─OCTOR ─OCUMENTATION 4.0 ┼XAMPLES ╘HE FOLLOWING ARE EXAMPLES OF HOW THE '─╔╙╦ ─╧├╘╧╥.╘┼─' COULD AID IN MANIPULATING AND RECLAIMING DATA ON A DISKETTE. ╒NSCRATCH A SCRATCHED FILE ╘HE FIRST EXAMPLE IS HOW TO UNSCRATCH AN INADVERTANTLY SCRATCHED FILE. ╥EFER TO THE DISK DRIVE MANUAL FOR DETAILS ON THE FILE TYPE BYTE IN THE DIRECTORY ENTRY. ┴FTER A FILE IS SCRATCHED THE FILE TYPE BYTE IN THE DIRECTORY ENTRY IS CHANGED TO A VALUE OF ZERO (0). ┴LL OF THE DATA IN THAT FILE REMAINS ON THE DISK UNTOUCHED UNTIL ANOTHER FILE I WRITTEN ON THE DISK. ╙O IF YOU HAVE JUST SCRATCHED A FILE AND HAVE NOT WRITTEN ANOTHER TO THE DISK THE FOLLOWING WILL RECLAIM THE FILE AS GOOD AS NEW. ╘HE FILE TYPE BYTE NEED ONLY BE CHANGED BACK TO THE NUMBER WHICH REPRESENTS IT'S FILE TYPE (IE. $81 SEQ, $82 PRG, $83 USR, $84 REL) AND THEN ╓┴╠╔─┴╘┼ THE DISK TO ALLOCATE THE BLOCKS IN THE ┬LOCK ┴VAILABILITY ═AP (┬┴═) AND THE FILE HAS BEEN RECOVERED. ├HANGE ─ISKETTE ╬AME ╘HE NAME OF THE DISKETTE IS STORED IN THE DIRECTORY TRACK 18 SECTOR 00 OF A 1541 DISK DRIVE. ╒SING '─╔╙╦ ─╧├╘╧╥.╘┼─' YOU CAN MODIFY THE TITLE THAT THE DISK WAS GIVEN WHEN IT WAS FORMATTED. ╒SE THE PROGRAM TO DISPLAY TRACK 18 SECTOR 00 AND POSITION THE CURSOR TO BYTE 144 WHICH IS THE BEGINNING OF THE 16 CHARACTER DISKETTE NAME. ┼NTER THE ╘┼╪╘ MODE AND TYPE IN THE NEW DISKETTE NAME. ╫HEN YOU HAVE FINISHED ALTERING THE NAME DEPRESS [RETURN] TO EXIT THE ╘┼╪╘ MODE. ╘O MAKE THIS CHANGE PERMANENT USE THE ╥┼╫╥╔╘┼ FUNCTION DESCIRBED IN SECTION 3.╠. PAGE 12