Tape port trouble on a PET 2001N

From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2002-11-09 17:53:36

I recently sold a C2N232 interface to someone in Germany.  When he plugged
it into cassette port #1, the computer crashed and sometimes went to the
machine language monitor.  A normal tape drive works in both ports, but
the C2N232 only works in port #2.  Does anyone have an explanation?

The computer is a North American PET2001N32, and he uses it with a 220->110
volt transformer that has enough wattage (400 VA).  The only electrical
differences between the C2N232 and the tape drive should be that the C2N232
takes some power from the +5V line all the time, while the tape drive might
not, and that the cassette motor power line is not connected to the C2N232.


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