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                         P E R I D E M O
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PERIDEMO - Periodic Function Movies, Shareware DEMO ver.2.0, 1991
Z. Juricskay, Cs. Markus, P. Pacher, G. Mark
Physical Institute of the Technical University
H-1111 Budapest, Budafoki u.8. Hungary


     System requirements:
     
      Þ    - IBM PC/XT/AT computer
      Þ    - 640 Kbyte memory
      Þ    - CGA, EGA, VGA or HERCULES graphics card
      Þ    - at least 1Mbyte disc space (on hard disk, if possible)
      Þ    - MS-DOS (3.0 or later version) operating system 

     First of all you should create a new directory for the program,
for example:
     
      Þ    - on the C drive  
      Þ    - in the PHISICS directory
      Þ    - as PERIDEMO            

     Just type:

      Þ    - C:          <Enter>
      Þ    - CD PHISICS  <Enter>
      Þ    - MD PERIDEMO <Enter>
      Þ    - CD PERIDEMO <Enter> 
      
     Try PKUNZIP.EXE program (1.01 or later version) to unzip the demo file.
      
     After using PKUNZIP, the names of the new files will be  shown  on  the
screen. When they are ready, the DOS prompt will appear again:

      Þ    C:\PHYSICS\PERIDEMO

     By this time the system becomes usable. You will be told  now,  how  to 
use it: You can start the  program  by  typing  its  name.  If  the  current 
directory is which the PERIDEMO.EXE and the other necessary  files  are  in, 
you can simply type

      Þ    PERIDEMO   Enter

     After starting you can control the program by  a menu system: Pressing

      Þ    -   Up  or  Down  you can position the highlight,
      Þ    -   Enter   you can choose the highlighted point,
      Þ    -   Esc   you can go back to the previous menu.

     To input a string use

      Þ    -   Left and Right key to position the cursor
      Þ    -   Insert to toggle insert mode
      Þ    -   Home and End to go to the end of the string        
      Þ    -   Enter to accept the text
      Þ    -   Esc to leave input
      
     Using the HELP you can press             

      Þ    -   PgUp and PgDn to watch next/previous page
      Þ    -   Esc to leave HELP
      
     Try DIRECTORY function to look for your files
      
      Þ    -   PgUp and PgDn for pagination
      Þ    -   Up and Down to quick-search
      Þ    -   Left and Right to position highlight                   
      Þ    -   Enter to choose a file
      Þ    -   Esc to leave this option
      
     Re-playing a film you can use the following buttons 
      
      Þ    -   Up and Down to change the playing speed
      Þ    -   Esc to finish re-playing

     This is only a demonstartion of PERIYODA, so most of  the  menu  points 
are out of use. When choosing them, a HELP text will appear on the middle of 
the screen. You can force this HELP for the other points by pressing   F1  .
The working points are the following:

      Þ    - FILE SERVICES\LOAD MOVIE: for loading a movie file into memory
      Þ    - FILE SERVICES\DIRECTORY: for searching the films
      Þ    - FILE SERVICES\QUIT: for quiting the program
      Þ    - PLAY MOVIE\FROM MEMORY: for playing a film that has been loaded
      Þ    - PLAY MOVIE\FROM FILE: for loading a film and playing it at once

     All the films given with these programs have been created for EGA (VGA) 
graphics card, so you will get an error message  when  playing  them  on  an 
other one. To be able to play them, they must be converted. The  MOVCONV.EXE 
program will help you, just type the name after the DOS prompt:

      Þ    MOVCONV   Enter

You will be asked some questions:

      Þ    Input file: the to be converted file
      Þ    Output file: the to  be  created  file  (must  be  different  from
      Þ                 the previous one)
      Þ    Target graphics card: the type of your graphics card

In the DEMO there are also some movie files:

          WAVE.MOV
          HOLE.MOV
          INTERFER.MOV
          WALL.MOV      
          HYDR2PX.MOV
          HYDR3DXY.MOV
	  TEAPOT.MOV
	  
     We hope you will enjoy this program. Have a good time with it.

                         The authors:  Zolt n Juricskay   &   Csaba M rkus

                                       P‚cs,                  S rv r,
                                       Olga u. 13.            Szatm r u. 4.
                                       H-7632                 H-9600
                                       HUNGARY                HUNGARY

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