On Fri, 20 Sep 1996, Bill Studenmund wrote:

> > This machine runs really well at its top speed, 42 MHz, as long as you
> > don't try to use the serial ports.  The machine won't hang, but it'll
> > just return junk characters if it's trying to talk to the modem. 
> > Everything else works great.  The machine has a fan glued to the
> > heatsink ( it'll freeze if you don't put one on after about 20 minutes
> > ).  and it tests out to have faster video, CPU, and FPU functions than
> > a Quadra 840AV.   It'll be a great machine if I ever get it up and
> > running properly under NetBSD.

I'm sorry, I did not see your original post, so I may be proceeding from 
several false assumptions. If I am correct, this is an upclocked machine 
we are talking about. One of the classic problems with upclocking these 
toys is that the serial ports break. The trick is usually to switch to an 
oscillator SLIGHTLY slower than the one that nails the serial ports (but 
obviously not so slow as to negate its value as an upgrade). This may be 
totally inapplicable to your particular problem, but it's at least worth 
thinking about.



Daniel Bell
Dept. of Computer Science
Johns Hopkins University