Re: DEC Alpha architecture issues

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Article #11426

#11426

From: Dileep Bhandarkar
Date: Mon, 23 Nov 1992 13:04

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>In article <DOCONNOR.92Nov20095251@potato.sedona.intel.com> doconnor@sedona.intel.com (Dennis O'Connor) writes:
>>
>>Sounds like a microcoded instruction to me. Except, of course, that
>>there's no guarantee of what PALcodes are available on a particular
>>system, and that the microcode may be external to the chip.
> 
We first used this idea in 1985 in the PRISM architecture as epicode. The intent
was to implement complex functions (that used to be microcoded on VAX) within
a RISC architecture. It is like a microcoded instruction, except that it is
implemented in macrocode that runs in a special mode.

Dileep

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Message-ID: <1992Nov23.180432.26829@ryn.mro4.dec.com>

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arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!decuac!pa.dec.com!nntpd2.cxo.dec.com!nntpd.lkg.dec.com!ryn.mro4.dec.com!wrksys.enet.dec.com!bhandarkar

References:

<1992Nov19.204209.6619@nntpd.lkg.dec.com> <DOCONNOR.92Nov20095251@potato.sedona.intel.com> <1992Nov20.183610.12796@crl.dec.com>

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Newsgroups: comp.arch
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!haven.umd.edu!decuac!pa.dec.com!nntpd2.cxo.dec.com!nntpd.lkg.dec.com!ryn.mro4.dec.com!wrksys.enet.dec.com!bhandarkar
From: bhandarkar@wrksys.enet.dec.com (Dileep Bhandarkar)
Subject: Re: DEC Alpha architecture issues
Message-ID: <1992Nov23.180432.26829@ryn.mro4.dec.com>
Sender: news@ryn.mro4.dec.com (USENET News System)
Organization: Digital Equipment Corporation
References: <1992Nov19.204209.6619@nntpd.lkg.dec.com> <DOCONNOR.92Nov20095251@potato.sedona.intel.com> <1992Nov20.183610.12796@crl.dec.com>
Date: 23 NOV 92 13:04:41    
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