     REVOLVING BORDER FOR THE UNEXPANDED VIC 20
 
     This is and old program I found stashed away in the back of my disk
     files.  I wrote this program in 1986 and never did anything more with
     it.  It is free to the public but is NOT to be sold.  Otherwise you
     may use it however you want, and I would like to see it translated for
     other Commodores (seeings how I'll manage to not find the time).
 
 
     Revolving border is an interrupt driven routine written in machine
     language.  As written the program will create the border out of
     reverse spaces and will rotate them through various colors.  The
     program resides in the cassette buffer and also a section in the top
     page of BASIC memory.  The system is activated by a SYS 828 and can be
     de-activated by a SYS 831.
 
 
     When I was writing this program I attempted to make it useable as an
     add-on to any program.  I decided to make it possible to change the
     border characters on the top, bottom, and each side to any available
     character.  To change the characters along the top of the screen you
     must change the 160 (the POKE nu	 er for a reversed space) in line
     7427 to the proper POKE number for the character you wish to use.
     Follow the same procedure for each of the other sides using line 7432
     for the bottom of the screen, line 7460 for the left side of the
     screen, and 7466 for the right side of the screen.
 
 
     I also made it possible to change the rate at which the border
     rotates.  This is accomplished by inserting a value from 0 to 255 in
     line 924.  The higher the number you use the slower th	 speed of the
     border.
 
 
     You will note that as this program is running the computer will react
     much slower than usual.  This is due to the fact that this is an
     interrupt driven routine and therefore the time delay in the program
     also slows down the normal operation of the computer.  Since this is
     true I use this program only for title screens and de-activate it
     (with a SYS 831) when I begin my actual program.  You may then
     re-activate it (with a SYS 828) when you re	 tart at the beginning of
     the program or possibly between different levels of a game program.
