🚀 go-pugleaf

DM>In article <Yds=uYG00VolEnD0oe@andrew.cmu.edu>, fc0v+@andrew.cmu.edu (Frankli
DM>hang) writes:
DM>|> Hi,
DM>|>   I was wondering if anyone knows of a simple hack that will allow the
DM>|> commodore 64 to work off dc battery supply.  I've heard that the
DM>|> computer uses the waveform off the ac powersupply as a timer.  Recently

DM>I don't know about that.  60 Hz seems awfully slow for a computer, even the
DM>C64.  I know it runs at 1MHz (there's a crystal inside).  I believe the
DM>9 VAC (is it 9 ?) is used to power the tape drive.  It may also be used for
DM>the RF modulator, but I'm not entirely sure.  If you need a TTL level 60 Hz
DM>oscillator, why not use a 555?  It would be quite simple to get a 50%
DM>duty cycle square wave out of it at 0 to 5 VDC.  Hope this helps.

The 60cylce clock was for the interupt system which is faster
than a PC's.

        STEPHEN CYBERMAN@TOZ.BUFFALO.NY.US
        commiserated at Thu  04-09-1992  16:56:43
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 * SLMR 2.1a * The Thrill of Victory and the Agony of Delete.