Re: crystal oscillator question

[TQuiroz]

Chuck wrote:
>I'm using a Fluke 123 Scopemeter to measure the output from the buffer that would >be pin
>6. So I'm staying away from the actual crystal part of the circuit.
>As I understand it from the manufacturer's schematics the output at the buffer, pin 6
>should be a square wave suitable to clock the rest of the circuit.

Sounds like your probe is loading the signal. In the past, I've been able to stop my controller designs just by poking at the clock signal.
I suggest passing the output of pin 6 to another unused inverter and check its output. If you still get the 1.3V sine at the right frequency, that means that the clock signal that you cannot see it still good enough to drive this last inverter, otherwise you wouldn't see anything.
You might need to add a FET stage before you can see the clock. Get a N-channel logic level FET (ZVN2110 from Zetex, 2N7000, or similar). Connect a 1000-ohm resistor between drain and 5V, the source to ground, and the clock to the gate. Scope the voltage across the resistor.

Hope this helps.
Tony