Waiting / Creating a delay

[na_th_an]

Well, I have to say it again: You have to use the couple of WAITs (not just one), or you won't avoid flicker:

Code:

WAIT &H3DA,8
WAIT &H3DA,8,8

General explanation on WHY both lines (and not only the first) have to be used is here: http://faq.qbasicnews.com/?blast=VerticalRetrace (almighty, almighty FAQ )

This will give ya a pseudoprecise 60 to 70 fps (a number in between) depending on several factors such as program effectivenes, computer speed, and some neat and scary stuff

Never use a FOR/NEXT to make your prog going slower, 'cause in a slower computer it will run slower, and in a faster computer it will run faster. Imagine that you tune your speed for a 200 Mhz computer... How could a 3 Ghz computer owner be able to play it?

[oracle]

I've tried using both lines nath, but sometimes the second line doesn't have any effect. I know it works, and the resultant flicker is because of a different part of the program, but the second line just doesn't seem to make a difference sometimes, that's why I left it out.

[mycophobiac]

Thanks na_th_an, that works perfectly! I appreciate the help.

[Antoni Gual]

In plain DOS You can delay for less than a millisecond by combining PC Timer reading and the PIT register reading.
Unfortunately in Windows this gives random wrong readings (times that are inferior than former reads)
I can post a demo if you want.
For short delays in Windows you should use the timers in libraries as DQB or UGL.