Linards Ticmanis wrote:
Michael J. Mahon wrote:And the rep rate is only once per field, so zeroing in on the edge takes multiple fields. (The width really isn't the issue.)It should take at least as many fields as the number of clock cycles in the shortest possible load/test/branch sequence. And you'll have to be very careful to "stagger" the timing of the test in succesive frames.
Actually, it can be done in log2 of the number of cycles, but the principle is the same. ;-) Each edge poll can cut the cycle uncertainty in half. -michael Music synthesis for 8-bit Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it is seriously underused."