> I've been looking at this a bit recently. > Pictures here: http://jks.com
Cool as heck! > The next step is to move everything to a microcontroller (e.g. > SAM7X) on a card that replaces the processor board completely. > As has been mentioned you can do all sorts of crazy, and perhaps > useful, stuff at this point. Have you tried going through the various checkout procedures in the manual to make sure they all still work? If the 5370 firmware authors *didn't* bake some timing dependencies into that 6800 code, they were the exception. Of course, if your emulator is cycle-for-cycle faithful to the 6800 it's all good. > I have a question about the dead time of the 5370. > Can it be eliminated with a fast enough processor, buffering, > interface, etc. or is it intrinsic to the measurement hardware itself? Short answer: when fidelity matters, use it in TI mode, not frequency or period mode. There will be no dead time in TI mode, and you'll get better precision as well. You can still get frequency readings if you want, by using host software to differentiate the phase values (TimeLab makes this relatively easy). I don't know if it would be possible to make zero-dead-time frequency measurements with firmware mods only. I doubt it could be done without a lot of effort that could better be applied elsewhere. -- john, KE5FX _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
