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July 1999, Week 2

HP3000-L@RAVEN.UTC.EDU
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Subject:
NM and CM Switching
From:
Stephen Douglass <[log in to unmask]>
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Date:
Thu, 8 Jul 1999 09:37:34 -0400
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This is an "out of curiosity" question: when NM-to-CM switch occurs (and
vice versa), what is actually going on?  Is the actual PA-RISC chip
detecting a CM instruction and invoking a different chunk of circuitry, is
some (using IBM lingo) microcode performing the CM instruction, or is some
other software performing the CM instruction?

Steve Douglass
BFGoodrich Aerospace

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