On Sun, 9 Jun 1996, Ken Nakata wrote:

> > On Sun, 9 Jun 1996 11:39:41 -0600 
> >  benh@inlink.com (Ben Hockenhull) wrote:
> > 
> >  > I have heard that the 030@50mhz chips are internally clockdoubled.  I am
> >  > wondering if this is indeed true.  If so, I would think that I'd see an
> >  > increase in processing speed, but not in external I/O.
> > 
> It must be "externally clock-halved", then ;-) I remember many of the
> Motorola M68K CPUs trigger/sample its output/input signals at both
> falling and rising edges of the clock input, so it was kind of a
> common practice to clock the CPU-bus interface circuitry at twice the
> CPU clock frequency.
> 
> > So, I'm not sure where the "internally clock-doubled" notion comes from :-)
> 
> Probably he was confusing the 040 rumored to be internally
> clock-doubled (which is only partially true) and the 030.

Concerning clock chipping -> look at:

http://bambam.cchem.berkeley.edu/~schrier/mhz.html

hope this helps .... anyway....

bye                      peter

         --- beam me up Scotty, this planet sucks ---                      
                                                        Plan B
Peter Kelm (kelm@physik.tu-berlin.de)

Technical University Berlin
Physics Department