CompuServe Messages

Jim, Thanks. Good reply. I wonder if you can say a few more words about Triple buffering. What do you mean by this? You mean writing a second page while waiting for the vertical retrace so you don't have to just sit and wait for the next one if it takes 2% too much time for a single screen draw? Would you do this on another X-Page and then flip between 3 pages instead of 2? Also, what do you mean by "tearing"? You mean that (sometimes moving) horizontal line across the screen where you see one frame on top and the next frame on the bottom? If what I said about triple buffering is right, how do you know when to jump out of your 2nd-page-draw and flip pages? Can you set up an interrupt that calls the page flipper during retrace? If so, how? And another thing – can't uou still do this in Mode 13? Regards, Fred Trafton