The OSSCAL thing is remarked out for the time being since it doesn't work the way I need it to work (it keeps a pin low when I need it to be high from the start).

There is no calibration value on the chip. From what I can tell there never was one as even the first read didn't show one. What four digit value can I put in there just to test?

Generally, calibration is not critical. If it is one or two ms out no one would know or care.

I can try testing all the outputs again to see what they are getting. I'll do that tomorrow night. Heading off to bed now.

I'm also now wondering about the voltage regulator. It is running off 9 volts regulated down to 5 with a 1.5 amp regulator that is anything but undersized and I have noticed it is getting rather hot and rather quickly. In initial tests it ran for a long time with the thing barely warm and now it borders on hot to the touch. Just noticed this for the first time tonight. Since the circuit is running next to nothing for components the heat seems excessive.

Makes for frustration when something works then suddenly stops for no apparent reason.

Bart