Wouter van Ooijen wrote: > I am sure it can generate *a* video signal. The visible part of a > horizontal line is 52 us (PAL). At 5 MIPS this is 260 instructions. > Without external hardware the very best you can hope for is to generate > one pixel per instruction, but if you were that clever you probably > would not have asked the question ;) One pixel per 2, 3 or 4 > instructions is probably more realistic. But this would still require > Scott-level coding tricks. BTW the sx part of the piclist website had a > video contest :) Have you folks ever taken a look at the "Single-Chip Video Wind Gauge" designed by Philip Pilgrim? A single PIC16C56 chip simulaneously takes wind speed and direction measurements and displays the results on an ordinary composite video monitor, using both text and a bar graph. The pixels are 2 instructions (407 ns) wide. It won a design contest in 1992. Here's a link to the abstract: http://www.dtweed.com/circuitcellar/caj00032.htm#456 More recently, Bruce Land showed how to impelement more general-purpose video displays (100x64 pixels) using the AVR Mega163: http://www.dtweed.com/circuitcellar/caj00150.htm#2670 -- Dave Tweed -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.