Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!lll-lcc!unisoft!paul
From: paul@unisoft.UUCP (n)
Newsgroups: comp.arch
Subject: Re: Register Windows
Message-ID: <1329@unisoft.UUCP>
Date: 14 Oct 88 16:38:00 GMT
References: <46500028@uxe.cso.uiuc.edu> <2768@ima.ima.isc.com> <13381@jumbo.dec.com>
Reply-To: paul@unisoft.UUCP (Paul Campbell)
Distribution: na
Lines: 31

In article <13381@jumbo.dec.com> dillon@jumbo.dec.com (John Dillon) writes:
>I must take Mr. Levine to task for forgetting the AMD 29000.
>
>This strategy dovetails nicely with AMD's commitment to shadow registers
>and serial scan.  The trap handler, using the shadow register (actually
>a miniature on-chip ccd camera obscura), takes a picture of the
>metallization and scans it out to the companion AMD 291984 image
>processing chip, which reconstructs the picture for the user.
>
>Consider the advantages and disadvantages (as I see them :-)
>  + no need for either lexan or quartz window
>  + the packaged part is insensitive to light
>  + no need for a magnifying glass: you put the image on your display
>  + only compiler writers need purchase the 291984
>  - the 291984 is unlikely to be in your machine when you need it
>  - it takes time to reconstruct and scan the image: no real-time window

Actually these last two are not a problem, one simply pages in a 
simulation of a 291984 and uses that (it is a RISC chip after all).

On a related note: I'm looking for venture for a new state of the art
product 'Register Windex' we expect a great demand for this product especially
for those systems that use 'dirty' bits for management of their windows.

	Paul

-- 
Paul Campbell, UniSoft Corp. 6121 Hollis, Emeryville, Ca ..ucbvax!unisoft!paul  
Nothing here represents the opinions of UniSoft or its employees (except me)
"Gorbachev is returning to the heritage of the great Lenin" - Ronald Reagan 1988
  (then the Wasington Post attacked RR [from the right] for being a Leninist)