[comp.lang.pascal] BitBlit for EGA in TP

docbrain@netmbx.UUCP (Frank Seidinger) (12/07/90)

Hi there,

   for a work related to my Diplom (I'm studying electrical engineering), i
   have to perform a BitBlit (bit aligned copy of a rectangular graphics
   from one location to another) on an EGA graphics card. I already got
   a piece of code out of the book 'Programmers Guide To The EGA/VGA' from
   Sutty and Blair, published by Brady. It aktually does nearly what I
   wanted but had two popperties I didn't liked. First, even on a 386 based
   33MHz computer it is very slow and second, it copies the 'Bits' planewise.
   So the color of a white window copied from one location to another first
   changes four times, before it is wholy copied.

   Thanks, in advance Frank.

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