From: joe@user.com   
      
   "Chris"  wrote in message   
   news:1141175777.765042.4160@v46g2000cwv.googlegroups.com...   
   > >Most of this performance problem centered on the 2000s' multi-plane   
   > >video scheme (BAD IDEA, NO BISCUIT), so the BASIC pseudo-BIOS function   
   > >"PAINT" had horrific performance on the 2000 when coded in a way   
   > >that probably had worked well on a CGA video card.  Of course, the   
   > >Model 2000 store demo (which was written in BASIC an was already in   
   > >the field) used PAINT extensively.   
   >   
   > Didn't latter day EGA and VGA cards use a similar multiplane approach.   
   > I remember tinkering around on my 2000, and trying to make sense of   
   > it...there was no pressing need, so I gave up. But perusing books on   
   > EGA/VGA programming I seem to recall it being similar.   
   >   
      
   A lot of the issues centered on the programming, not the output display,   
   although   
   there were display issues too.   
      
   Now, if the 2000 just had an easy way to 'multi-plane' and do 'auto   
   increment'...   
      
   By the way, if you used a mono display, you could make a simple jumper/cut   
   change to the board and now feed the second plane to the intensity bit on   
   the mono monitor in graphics mode.  But no software supported that (well,   
   one of the diags did, it put up a checkerboard on the mono screen with   
   alternating bright/shaded blocks), you'd have to bit-bang everything.   
      
   Mike   
      
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