TID: Mystic BBS 1.12 A43   
   MSGID: 1:229/101 358b6d2b   
   REPLY: <7708ff89-b710-49cf-9b51-af44007caec8@googlegroups.com> 08875ad   
   TZUTC: -0400   
    TL> As long as the doves stay in the sky and the fire stays OUT of the sky   
    TL> and away from the ground, they might have used vertical interrupts to   
    TL> switch sprite sets as the electron beam hit certain parts of the screen.   
    TL> Think of it like a layer cake. Each    
    TL> layer can have up to eight sprites which are independent of the sprites   
    TL> in any other layer. On the 64, the layers can be different widths. You   
    TL> can have dozens of sprites on the screen at the same time but each group   
    TL> of eight can only stay in its own    
    TL> layer.   
      
   Many of the demo scene demos from back in the day (and currently) took   
   advantage of vertical interrupts to make incredible demos. I would bet that   
   Epyx did the same.   
      
   frank%netsurge%demonic   
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   --- Mystic BBS v1.12 A43 2019/03/02 (Linux/64)   
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