Re: Raycasting 3D demo disk

[Linards Ticmanis <ticmanis@gmx.de>]

Michael J. Mahon wrote:

> The Mockingboard makes this pretty easy, since it contains *two* 6522
> VIA chips, each of which has two timers with interrupt capability!

And on a //e and above, if you program the Mockingboard with the right
number of cycles and then wait for VBL ($C019) before actually enabling
the counter, it makes a decent-enough VBL interrupt source too. That way
you can switch your double buffer in the blanking interval, preventing
tearing.

-- 
Linards