Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!munnari.oz.au!bruce!goanna!minyos!s872625
From: s872625@minyos.xx.rmit.oz (Chris Cogdon [Brataccas])
Newsgroups: comp.sys.nsc.32k
Subject: Re: 32000 Un-Nicities
Message-ID: <2055@minyos.xx.rmit.oz>
Date: 6 Dec 89 06:22:48 GMT
Organization: RMIT Computer Centre, Melbourne Australia.
Lines: 26

Sorry 'bout the delayed reply. My post rights to this group strangely
disappeared.

In article <2495@taux01.UUCP> amos@taux01.UUCP (Amos Shapir) writes:
>
> >3) CVTP has no parallel. ie. there is no single instruction which can undo
> >   the bit pointer, nor can anything directly use the result.
>
> This is ambiguous, since a bit pointer can be reduced into any number
> of possible byte+offset pairs.  If you are satisfied with a minimum-offset
> pair, do a LSH, AND, or DEI.

Seperate instructions could also be used to create the bit-pointer. I don't
see why they created a single instruction to do-up the bit-pointer, but no
single instruction to un-do it.

In article <410@sibyl.eleceng.ua.OZ> ian@sibyl.OZ (Ian Dall) writes:
>
> >1) Displacements can only cover 1M of addressing space (512k if you only
> >   allow for forward displacements from a fixed base).
> 
> Not true. Displacements can be 30 bit signed which is 1GB not 1MB.

Sorry, bit of a typo there. I meant 1GB and 512MB respectively.

Chris Cogdon. (s872625@minyos.xx.rmit.oz)