Chris Atenasio wrote:
> Would it make sense then to keep an internal timer, calibrated with
> vga_waitretrace(), and sync draws to that? Lets see, 200,000 hz cpu /
> 70 hz refresh gives ~2857 cpu cycles between refreshes. Take into
> account that the retrace is a fraction of the refresh time, and you
> are dealing with somewhere < 2857 cycles, which is fine for something
> simple, but wont give you time to blit images. Then again I may be
> calculating something wrong...
Indeed, for a 200KHz computer it would be a problem. Considering
most machines these days are at least 100MHz, that's at least
1.4 million cycles per refresh.
Plenty of time. :)
Martijn
