I have an Amiga 2000 with rev 6.2 motherboard. The problem is that the clock resets to default date/time when powered off. It has a new coincell battery, and the clock chip is getting 3v power, I have checked that, but something strange happens. This is what I know so far:
I have reset the clock with CLI command "setclock reset", i then set the date and enter command "setclock save". The time is written to the clock and I can verify this by using command "setclock load" and checking the date/time, and its perfect.
A CTRL AMIGA AMIGA reset, and it holds the date/time, no problem there.
It is when I turn the Amiga off, that the clock is reset to default date/time of 01-Jan-1978 00:00
But the weird thing is, it then keeps time from that point on. So if I switch the Amiga off, then switch back on 7 hours later, the clock has the time as 01-Jan-1978 07:00. If I power off and switch back in 2 days later, the date will be 03-Jan-78.
It seems to me, that when switching off the Amiga, there is a momentary loss of power to the clock chip, it resets, then gets power from the coincell battery and keeps time from 01-Jan-78 00:00 onwards...
Where do I start diagnosing this problem?
I have reset the clock with CLI command "setclock reset", i then set the date and enter command "setclock save". The time is written to the clock and I can verify this by using command "setclock load" and checking the date/time, and its perfect.
A CTRL AMIGA AMIGA reset, and it holds the date/time, no problem there.
It is when I turn the Amiga off, that the clock is reset to default date/time of 01-Jan-1978 00:00
But the weird thing is, it then keeps time from that point on. So if I switch the Amiga off, then switch back on 7 hours later, the clock has the time as 01-Jan-1978 07:00. If I power off and switch back in 2 days later, the date will be 03-Jan-78.
It seems to me, that when switching off the Amiga, there is a momentary loss of power to the clock chip, it resets, then gets power from the coincell battery and keeps time from 01-Jan-78 00:00 onwards...
Where do I start diagnosing this problem?