We got a new Sun E220R at work a few days ago.  I finally powered it up
today, though I had some trouble getting the serial console going, which
leads to my query..

I acquired a cable (female DB9 to male DB25) that was labeled as a null
modem cable and set up minicom to run at 9600, 8N1.  Nothing happened. 
Finally, after digging all over the place for another cable, I gave up and
connected that cable to another cable -- supposedly a printer extension
(female DB25 to male DB25) -- and everything worked!  

This makes me wonder a few things.  First, the serial port on a normal Sun
box is a female DB25.  On a PC, OTOH, it's usually a male DB9 or DB25. 
Why is that?  It seems to imply that you don't need a null modem
cable to connect a PC to a Sun, though PC<->PC and Sun<->Sun still need
null modem cables.  Is that true?

Secondly, why would it suddenly start working with a printer cable in the
middle?  I guess I had left the cable disconnected for a few minutes while
I was digging around, so could the port have somehow reset while nothing
was connected to it?


Oh yeah..  This is labeled Off Topic, though the first thing I did once I
got to a console was to install Debian ;-)

-- 
 _  _  _  _ _  ___    _ _  _  ___ _ _  __   Never let school get in 
/ \/ \(_)| ' // ._\  / - \(_)/ ./| ' /(__   the way of your  
\_||_/|_||_|_\\___/  \_-_/|_|\__\|_|_\ __)  education. -- Mark Twain 
[ Mike Hicks | http://umn.edu/~hick0088/ | mailto:hick0088 at tc.umn.edu ]
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