Stupid eBay user du jor

Well, if you hae to re-write the entire screen each time : 19200, assuming 10 bits per character (start, 8 data, 1 stop) is 1920 characters/second. Your screen has 1920 characters. So one full screen per second, maximum I am told that the origianl spec for the PERQ rasterop machine was that it should be as fast at updating text as a normal serial terminal (remember the PERQ didn't have a text mode, just a bitmapped mode). It was estimated that the speed of a good terminal was one full screen per second. In fact the PERQ easily beat it -- the peak speed, assuming all you were doing was displaying things on the screen, was nearer 10 full screens per second, and that's a full PERQ secreen, which displays something like 80*66 characters. -tony