On 04/13/12 20:59, Gerrit Heitsch wrote: > So unless the circuit that converts the 9V AC into a 50 Hz TTL-signal > contains some kind of filter, the TOD clocks cannot be accurate. Hi, There is nothing impossible about using a filter at the TOD input pin, and it can have input hysteresis to guard for noise. At least I remember the TOD clock was pretty accurate 20 years ago when I used it in my bbs software. I also used the TOD interrupts to keep track of the date, and had an asm routine to "sprintf" the time and date (with weekday) into a basic variable. AIKA: 01:27.10 Sun 07.08.88 -Pasi Message was sent through the cbm-hackers mailing listReceived on 2012-04-13 21:00:05
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