Re: how is northstar chip "geared down"?

The countermeasures are quite plain and simple.  You need to run an
application that is not reliant on 5250 applications.  If you have an
application which also run's on competitors products then IBM will have a
competitively priced 400 for you.  If, however, you are reliant on IBM's
5250 technology then IBM feels they have you by the short hairs and you
won't leave.  Of that if you do, you'll at least stay with one of IBM's
other branches (why you would after being abused is beyond my
comprehension).  Evidently IBM feels that BABY/400 and/or that Unix product
to run S/36 applications natively on HP equipment are not serious
competitors.

Rob Berendt

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                    "Steve Richter"                                             
                                         
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Continuing Nathan's much appreciated and  justified points on raw code
execution speed on the iseries...

Some of the posts site chip speeds of the  northstar chip as 200, 252 and
262 mhz and that some models are "geared  down" to approximate performance
of preceeding models.
From: . http://www.midrangecomputing.com/mc/articles/19980903.htm

What does "geared down"  mean?

Is the 200, 252 and 262 mhz speed slowed to 50,  100?

Are there methods other that L1, L2 cache and the stated chip  mhz rates
that ibm uses to limit the cpu speed of the system? Is there a bus  speed
like the one on a pc?

Does cfint have a hardware twin?

Is the MULIC? tape still used?


Will there be any sessions at the upcoming common that address  the
technical means by which ibm slows down its systems and discuss possible
countermeasures that a user could employ to run THEIR system at full
speed?  Have there ever been any such sessions?

Steve Richter





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