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* YARD -- YET ANOTHER RAM DISK - RESET PROOF RAMDISK
* COPYRIGHT (C) 1986 BY JAY BARR
* RELEASED TO PUBLIC DOMAIN
* ALL RIGHTS RESERVED
* LAST REV: 12 AUG 86
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* THIS PROGRAM IS RELEASED TO PUBLIC DOMAIN AND MAY NOT BE SOLD OR
* APPEAR ON THE DISK OF ANY COMMERCIAL PROGRAM WITHOUT THE EXPRESS
* WRITTEN CONSENT OF THE AUTHOR.
*
* IT WOULD BE NICE TO RECEIVE DONATIONS TO SUPPORT MY EFFORTS SO THAT
* I MAY PRODUCE OTHER PROGRAMS OF VALUE WITHOUT THE ADDED STRAIN 
* FINANCIAL BURDENS ALWAYS SEEMS TO IMPRESS UPON GARAGE PROGRAMMERS.
* $2, $5, $10, OR WHATEVER YOU FEEL THE PROGRAM IS WORTH WOULD BE
* GREATLY APPRECIATED.  PLEASE SEND ALL DONATIONS TO:
*
* JAY BARR
* 4541 EAST OWENS #1
* LAS VEGAS, NEVADA 89110
*
* QUESTIONS MAY BE FORWARDED TO ME THROUGH THE 
*
*  COMPUTER ADDICTS ANONYMOUS BBS
*      300/1200 BAUD  24HRS
*     8 BITS,1 STOP, NO PARITY
*        702-731-3178
*
*  LEAVE MESSAGES FOR ME IN CARE OF THE 'SYSOP'(BOB LENTINI) OR TO
*  'THOMAS STEWART'(CO-SYSOP).
*
* WHAT EVER YOU CONTRIBUTE WOULD BE GREATLY APPRECIATED
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*  YARD INSTRUCTIONS - EASY AS {YARD450F.PRG} = 450K RAMDISK AS DRIVE F
*---------------------------------------------------------------------
* CHANGE SIZE AND DRIVE BY RENAMING THE FILE AS 'YARDsssd.PRG', WHERE 'sss'
*    IS THE DESIRED SIZE (IN DECIMAL CLUSTERS) AND 'd' IS THE DRIVE LETTER
*    (C THROUGH P). EITHER THE SIZE OR THE DRIVE (OR BOTH) MAY BE OMITTED,
*    SINCE THERE ARE DEFAULT VALUES FOR THESE AT 'DSIZ' AND 'DRIV'. LEADING
*    ZEROES IN THE SIZE FIELD ARE IGNORED; AN EXTRANEOUS CHARACTER (SUCH AS
*    A SPACE) OR AN ILLEGAL DRIVE LETTER WILL TERMINATE PARSING.
*
* A RAMDISK OF LESS THAN 11 CLUSTERS WILL NOT BE INSTALLED (11 CLUSTERS IS
*    INSTALLED, BUT SHOWS 0 BYTES FREE; APPARENTLY THE SYSTEM NEVER USES
*    THE LAST TWO CULSTERS OF A DISK). THE MAXIMUM SIZE DEPENDS ON THE
*    AMOUNT OF AVAILABLE RAM. UP TO 373K IS POSSIBLE IN A 520ST WITH TOS IN
*    ROM AND NO DESK ACCESSORIES. THE PROGRAM CHECKS FOR INSUFFICIENT RAM,
*    BUT THIS IS UNRELIABLE FROM AN 'AUTO' FOLDER (SEE BELOW) BECAUSE PART
*    OF THE OPERATING SYSTEM HAS NOT YET BEEN INSTALLED. UNLESS THE FAKE
*    BPB IS ALTERED, ONE CLUSTER IS 1K AND THE SIZE IS HANDLED SUCH THAT A
*    360 CLUSTER RAMDISK HAS THE SAME NUMBER OF BYTES FREE AS A SINGLE-
*    SIDED DISKETTE. THE DEFAULTS ARE 200 CLUSTERS, DRIVE C:.
*
* INSTALLING AS C: HAS SOME SIDE-EFFECTS:
*    1. AN ICON IS AUTOMATICALLY INSTALLED FOR IT FROM AN 'AUTO' FOLDER.
*    2. NO DESK ACCESSORIES ARE INSTALLED FROM THE FLOPPY. THEY CAN BE
*       INSTALLED, HOWEVER BY COPYING THEM TO THE RAMDISK AND THEN PRESSING
*       THE RESET BUTTON.
*    3. WHEN THE DESKTOP IS SAVED THE FLOPPY SPINS, BUT THE FILE IS WRITTEN
*       TO THE RAMDISK. DESKTOP.INF ON THE FLOPPY WORKS CORRECTLY, HOWEVER.
*
* THE PROPER USE OF THE PROGRAM MAY SEEM CONFUSING UNLESS CERTAIN FACTS ARE
*    BORNE IN MIND:
*    1. THE PROGRAM MUST RUN TWICE TO INSTALL A RAMDISK, AND THE FIRST RUN
*       TERMINATES BY EXECUTING A SYSTEM RESET. BOTH RUNS MAY BE DONE FROM
*       ANY DIRECTORY OF ANY DRIVE, AND NEED NOT BE THE SAME COPY (THE SIZE
*       AND DRIVE LETTER ARE READ ONLY DURING THE FIRST RUN).
*    2. WHEN THE SYSTEM RESETS IT WILL RUN ANY PROGRAM IT FINDS IN A FOLDER
*       NAMED "AUTO" ON THE DISKETTE IN DRIVE A:. THEREFORE, THE SECOND RUN
*       WILL BE PERFORMED AUTOMATICALLY IF THERE IS A COPY OF THIS PROGRAM
*       IN SUCH A FOLDER.
*    3. THE ORDER IN WHICH THE SYSTEM FILES IN A DISK'S DIRECTORY CANNOT
*       BE DISPLAYED IN A WINDOW. TO BE CERTAIN THAT THE DESIRED SIZE AND
*       DRIVE LETTER ARE OBTAINED, IT IS BEST TO HAVE ONLY ONE COPY OF THE
*       PROGRAM IN THE DIRECTORY FROM WHICH THE FIRST RUN WILL BE MADE.
*    4. MORE THAN ONE RAMDISK CAN BE INSTALLED, BUT THE PROGRAM WILL ONLY
*       ALLOW ONE OF EACH LETTER DESIGNATION. BECAUSE OF THIS, RUNNING A
*       COPY MORE TIMES THAN IS NECESSARY WILL CAUSE NO HARM.
*
* TO INSTALL A RAMDISK AUTOMATICALLY AT POWER-UP, PLACE A COPY (POSSIBLY
*    RENAMED) IN AN AUTO FOLDER ON A BOOT DISKETTE. TO INSTALL A RAMDISK
*    MANUALLY, RUN THE PROGRAM ONCE IF THE DISKETTE IN DRIVE A: HAS A COPY
*    IN AN AUTO FOLDER, OR TWICE IF IT DOES NOT. DISK ICONS CAN BE
*    INSTALLED FROM THE 'OPTIONS' MENU. WINDOWS CAN THEN BE OPENED, SIZED
*    AND POSITIONED, AND THE DESKTOP SAVED (ALSO FROM THE 'OPTIONS' MENU).
*
* THE RAMDISKS AND THEIR CONTENTS WILL SURVIVE ANYTHING THAT DOES NOT ALTER
*    THE MEMORY IN WHICH THEY RESIDE, SUCH AS A POWER-FAIL OR AN ERRANT
*    BRANCH. SHOULD THE COMPUTER CRASH, IT WOULD ONLY BE NECESSARY TO PRESS
*    THE RESET BUTTON AND, AT MOST, RUN ANY COPY OF THE PROGRAM ONCE, AND
*    TO RE-INSTALL THE ICONS AND WINDOWS.