On 4 Jun 2003, David Holland wrote:
I finally got desperate enough to pull out a RS-232
break out box, and a
scope. (Plus a couple of dweebie basic programs) What I find is the
Apple serial communications looks like its running at about +/- 4v.
(This is on the builtin modem port. I can't get a SSC to work either.)
(The waveform also appears to have a fair amount of ring on the voltage
swings, but that may be normal)
I'm guessing that the +/-4volts isn't enough for my PC to recognize it.
Have you tried a different cable?
--
Sellam Ismail Vintage Computer Festival
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