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From: sasaki@endor.harvard.edu (Marty Sasaki)
Newsgroups: comp.org.decus
Subject: Re: ramdisk on an 11/750? (under VMS)...
Message-ID: <672@husc6.UUCP>
Date: Mon, 17-Nov-86 23:31:18 EST
Article-I.D.: husc6.672
Posted: Mon Nov 17 23:31:18 1986
Date-Received: Tue, 18-Nov-86 03:27:22 EST
References: <263@stsci.uucp> <1653@ncoast.UUCP> <932@blia.BLI.COM>
Sender: news@husc6.UUCP
Reply-To: sasaki@endor.UUCP (Marty Sasaki)
Organization: Strategic Information
Lines: 9

There is a problem with PDDRIVER, the inner loop (moving bytes from
the "disk" to the user's address space) uses MOVB, which on a uVAX II
is increadibly slow. We haven't tried it on other processors. Just a
warning.
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  Marty Sasaki				uucp:   harvard!sasaki
  Strategic Information			arpa:	sasaki@harvard.harvard.edu
  80 Blanchard Road			bitnet: sasaki@harvunxh
  Burlington, MA 01803			phone:	617-273-5500