XPost: comp.sys.sinclair, comp.sys.atari.8bit, comp.sys.apple2   
   XPost: comp.sys.cbm   
   From: mjmahon@aol.com   
      
   Eric Smith wrote:   
   > "Michael J. Mahon"  writes:   
   >   
   >>His point is well taken--the Apple II display mapping is motivated   
   >>by the desire to display 40 characters/280 pixels per line while   
   >>leaving as few/small holes as possible and using as little logic   
   >>as possible.  DRAM refresh is not a primary consideration, since   
   >>its requirements are easily met by many mappings.   
   >   
   >   
   > And if you install the Video Associate Labs VB3 Microkeyer in your   
   > Apple II or Apple II+, you get some added video modes including linear   
   > mapping.   
   >   
   > Wish I still had mine.  Sigh.   
      
   That's a pretty amazing mod, since video generation is so   
   pervasive in the Apple II design.   
      
   How did it do that?   
      
   -michael   
      
   Music synthesis for 8-bit Apple II's!   
   Home page:  http://members.aol.com/MJMahon/   
      
   "The wastebasket is our most important design   
   tool--and it is seriously underused."   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)