


>>>>>  D O S     T R I C K S <<<<<
MSG LEFT BY: MIGHTY COLOSSUS
DATE POSTED: TUE FEB  2  3:30:20 AM

THIS IS THE VOICE OF COLOSSUS!
 
TRY THIS TO SEE ANY DOS, REMOVE THE
REAR MOST SET OF RAM CHIPS FROM YOUR
APPLE (THE ONES NEAR THE I/O SLOTS).
THEN INIT A DISK, REPLACE THE RAM AND
BOOT UP UNDER THE PROGRAM YOU WISH TO
DEPROTECT. THEN FORCE A REBOOT WITH THE
DISK YOU INITED IN DRIVE 1. THE DOS 
FROM THE PROTECTED DISK WILL (IN MOST
CASES) STILL BE IN THE RAM UP TOP....
 
THIS NEW DOS IS A SLAVE AT 32 K AND
THE OLD (AND PROTECTED DOS) IS STILL
AT 48 K. THIS WILL WORK ON ABOUT 50%
OF THE PROGRAMS.  ENJOY
 

YOU CAN ALSO REMOVE THE TOP 32K AND
GET TWICE AS MUCH.

              ^^^ SYSOP ^^^

=======================================
CHECKSUM TRICK

MSG LEFT BY: RANDY UBILLOS
DATE POSTED: SUN FEB 21 12:53:19 AM

A  VERY  HANDY TECHNIQUE FOR  TAKING  A
LOOK AT THE DATA ON A PROTECTED DISK IS
TO  DISABLE  THE CHECKSUM IN THE  RWTS.
THE  FORMATS  OF MANY  PROTECTED  DISKS
VARY ONLY IN THIS CHECKSUM,  SO TURNING
IT   OFF  SHOULD  ALLOW  ANY   STANDARD
TRACK/SECTOR  UTILITY  TO LOOK  AT  THE
DISK!  TO DO THIS, BOOT UP THE DOS THAT
YOU WISH TO USE, AND ENTER THE MONITOR.
THEN  ENTER   B942:18 FOR  DOS  3.3  OR
B963:18  FOR DOS 3.2.   THIS CHANGES  A
SET  CARRY INSTRUCTION TO A CLEAR CARRY
INSTRUCTION.  NOW RETURN TO DOS AND RUN
YOUR  EDITOR.   IF  THE  DISK  YOU  ARE
LOOKING  AT  IS  PROTECTED  WITH   THIS
SYSTEM,  YOU  SHOULD BE ABLE TO READ IT
NOW. TO MAKE  THIS CHANGE TO A DOS ON A
DISK, THIS DATA IS CONTAINED IN TRACK 0
SECTOR  3,  AT EITHER BYTE $42 OR  BYTE
$63, FOR DOS 3.3 OR 3.2, RESPECTIVELY.
GOOD LUCK.......
                     RANDY

=======================================
LETTER FROM: AXE MAN
DATE MAILED: WED FEB 24  6:42:18 PM

TO AVOID RE-LOADING THE LANGUAGE USE TH
ESE BYTES
AS 'KEYS'- IF A CERTAIN NUMBER IS NOT
IN IT.....BOOM!
  FOR EXAMPLE, SPACE RAIDERS REQUIRES
 THAT ADDRES $21 CONTAINS A #$26.
SO, WHATCHA DO IS THIS:
     AFTER PRESSING RESET (WITH INTEGER
SET UP) LOOK THROUGH THE MACH LANG
TO SEE IF IT CHF YOU LOOK AT THE CODE, 
YOU CAN MAKE 
THE SAME MODS IN A COPY OF A SYST
MASTER ON THE DISK ITSELF, SO A MASTER
CREATE WILL PUT THIS DOS ON A DISKETTE.
CHANGE THE CODE THAT SAYS LDA C081 WITH
LDA C000 -- THAT SSHOULD WORK FINE.

 
=======================================

MSG LEFT BY: DISK ZAPPER
DATE POSTED: THU FEB 25 10:47:09 PM

GET INTO MONITOR FROM A NORMAL DISK.
TYPE:   400<A800.ABFFM
 
POOF THERE YOU HAVE ALL THE DOS COMANDS
NOTICE THAT ALL THE LETTERS IN THE
COMAND ARE FLASHING BUT THE LAST ONE
THECKS CERTAIN BYTES
HERE IS A PARTIAL LIST : 20-26, 36-39,
4E-4F
SEE WHAT THE PROGRAM LOOKS FOR. THEN,
SIMPLY SET THOSE ADDRESSES TO THE 
CORRECT BYTE AND FIND THE STARTING
ADDRESS (SOMETIMES SHOWN AT 3F2.3F3
BUT MOSTLY YOU'LL HAVE TO LOOK FOR IT.
SOMETIMES IT WILL HAVE A $LDA C050
WHICH IS USUALLY NEAR THE START OF 
THE PROGRAM).

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