[comp.sys.apple2] Non-Flicker Drawing

akc@mace.cc.purdue.edu (Bruce Cox) (03/25/90)

Does anyone have a good example (source code) of drawing to the GS screen
and avoiding the flicker.  I understand the principle of tracking the scan
position and I've read Technote #39.  What  I could use is a good example
to look at.  (ie:  Code that takes a block memory shape in c or assembly and
displays it to the screen at given coordinates without drawing while the
scan line is crossing that area of memory.

If anyone know of any code please respond to my account.  I don't always
get around to reading all of comp.sys.apple*.

Bruce    akc@mace.cc.purdue.edu