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1990-10-01
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RoCalc Hard Drive Backup Calculator
July 13, 1988
Revision 1.0
RoCalc and this document (C) 1988
by Robert Sink, Jr.
The Sixteen Bit Exchange BBS
(703) 342-6386
Introduction
------------
RoCalc is a program that compiles various data from your
hard disk(s) then provides you with various mathematical
answers to help calculate the number of disks needed when
backing up your hard drive. It also provides you with a general
statistical compilation for other hard drive related tasks.
RoCalc was written because there are few programs that
calculate the data needed for backing up your hard drive using
DOS BACKUP or a similar backup. RoCalc tells you the number of
disks needed to backup to 360K floppies, 720K floppies, 1.2MB
floppies, and 1.44MB floppies. RoCalc also looks in all the
subdirectories of the hard disk. It calculates the number of
files, including those not previously backed up. It also
gives a percentage of drive space free, and counts
files/directories on the drive. RoCalc can access any hard
drive via a menu selection. When the program is terminated,
it returns you to the original drive and directory.
RoCalc was written in Turbo Pascal 4.0 from scratch.
Various windowing/input routines were used to speed up
input/output and to give it a pleasing interface. RoCalc
does nothing more than make BIOS calls to the hard drive FAT
table to read space and drive capacity. It then calculates
other variables. RoCalc supports logical drives from C: to Z:.
Internally, RoCalc has detection for drives that are valid
and drives that are not valid so you will not receive
information on a drive that isn't there. RoCalc does not
support drives A and B. RoCalc has been tested on both
single-user and multi-user systems (such as DoubleDOS and
DesqView) and has been found to run flawlessly.
System Requirements
-------------------
RoCalc uses very little memory. It can run on any
IBM-compatible computer. It requires a hard disk, but will
operate with any monitor.
Using RoCalc
------------
Install RoCalc by copying ROCALC.EXE into a directory named
in the PATH statement in your AUTOEXEC.BAT file. By doing
this, you'll be able to use the program from any subdirectory.
For more information on the PATH statement, see your DOS manual.
Run RoCalc by giving the command: ROCALC <Enter>. You'll see
an opening screen that asks you for the drive(s) to be
checked. Just type the letter that designates the drive. You
don't need to add the colon (:).
If you're backing up more than one disk or partition, you can
name multiple drives. Simply type them (without spaces) at
the input prompt. For example, to check drives C, D, and
E, type CDE, then press <Enter>.
RoCalc will then calculate the information you need and
display it on the screen. You can print this screen by
pressing <Shift>-<PrtScrn>. Press any key to return to the
opening screen. Exit the program by typing A, then press
<Enter>.
You can take a shortcut by adding the letter A to your list
of drives. If you do that, RoCalc will exit after you press a
key while viewing the report screen.
Even though RoCalc has been tested under most circumstances,
this does not indicate that this program does not have any
bugs. If you experience any kind of problems, or have
comments, questions, ideas, or gripes, please let us know at
the following address or BBS:
Robert Sink, Jr.
P.O Box 3215
Roanoke, Virginia 24015
The Sixteen Bit Exchange BBS
(703) 342-6386 - 3/12/24/96/19.2k - USRobotics
24 hours/day 7 days/week
I'd like to thank Mark Kaynor for clearing up some of the
finer things about disk access in Turbo Pascal (among the
many things he helped me with). I'd also like to thank Alton
Prillaman and all those other people who have been so
helpful.
RoCalc took considerable time to develop. If you would like
to encourage the development of future programs of this type,
and the enhancement of RoCalc itself, a contribution of $10,
sent to the address above, would be appreciated.
DISCLAIMER
----------
The author makes no warranty of any kind, express or implied,
including without limitation, any warranties or
merchantability and/or fitness for a particular purpose. The
author shall not be liable for any damages, whether direct,
indirect, special or consequential arising from a failure of
this program to operate in the manner desired by the user.
The author shall not be liable for any damage to data or
property which may be caused directly or indirectly by the
use of this program.
IN NO EVENT WILL THE AUTHOR BE LIABLE TO YOU FOR ANY
DAMAGES, INCLUDING ANY LOST PROFITS, LOST SAVINGS OR OTHER
INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF YOUR USE
OR INABILITY TO USE THE PROGRAM, OR FOR ANY CLAIM BY ANY
OTHER PARTY.