I coded this thing on the C64 back in 1992 :D

I came upon some old C64 stuff again lately. This happens every 5-8 years or so :D
So I found this old gem in an Elechtech zip file.
Graphics done by Diacom, and the code done in Macro Assembler by me.
(Don't send floppies to us though - those addresses are long expired :D)