I have a device where the crystal and associated network is external to
the CPU. Which isn't working. Looking across the two connections with a
scope there's no approx 30 kHz as should be - but what looks like very
dirty mains hum. Any way of easily testing the crystal other than by
substitution?
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*Why is the man who invests all your money called a broker? *
Dave Plowman
London SW
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