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Aucbvax.5376 fa.works utzoo!decvax!ucbvax!works Fri Dec 4 02:50:44 1981 WorkS Digest V1 #42 >From JSol@RUTGERS Thu Dec 3 23:26:36 1981 Works Digest Friday, 4 Dec 1981 Volume 1 : Issue 42

Today's Topics: Tandy 68000 Based Microcomputer Intel Opsys Limiting the 68000 to permit demand paging. ----------------------------------------------------------------------

Date: 2 December 1981 07:51-EST From: Hal Abelson <HAL MIT-MC AT>

I heard a rumor (in this forum, perhaps) of a soon to be released 68000-based computer by Radio Shack. Anyone have any information about this?

[This computer was discussed briefly in WorkS Digest V1 #36 and #37. -JSOL]

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Date: 2 Dec 1981 (Wednesday) 1029-EDT From: DREIFU at WHARTON-10 (Henry Dreifus) Subject: Intel Opsys

In November 1981 MINI-MICRO systems pp199-200 is a description of a few of the Operating System classes around. In addition there is mention of iRMX/MMX and iRMX86. The big concept though, is the possibilities of combining an Opsys with all the new technology. Though the article is heavily skewed towards Intel, the idea is the same: What should the Opsys be at the Personal Computer level?

There is some mention of layered Opsys's with actually embedding parts on the chips themselves.

If there are more references, please put them up in WorkS.

Hank

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Date:3 Dec 1981 06:27:43-PST From: decvax!watmath!idallen at Berkeley Subject: Limiting the 68000 to permit demand paging.

Am I correct in my assumption that most of the auto[increment|decrement] modes of the MC 68000 would have to be avoided to permit demand paging? Is this not like purchasing a sports car to drive to Church on Sundays? I would find it hard to believe that satisfactory performance could still be squeezed out of the chip if it was limited in this way -- I'd certainly like more details on just what must be avoided (and at what cost). -IAN!

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