Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site umcp-cs.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!umcp-cs!chris From: chris@umcp-cs.UUCP (Chris Torek) Newsgroups: net.unix-wizards Subject: More Q's about UDA50/RAxx driver Message-ID: <387@umcp-cs.UUCP> Date: Thu, 18-Oct-84 03:41:21 EDT Article-I.D.: umcp-cs.387 Posted: Thu Oct 18 03:41:21 1984 Date-Received: Fri, 19-Oct-84 01:51:49 EDT Distribution: net Organization: U of Maryland, Computer Science Dept., College Park, MD Lines: 15 As long as I'm asking questions . . . does anyone know why the uda50 driver is not integrated into the uba device drivers (that is, why it avoids ubago and so forth)? I know (think?) that the way it is now means that I/O requests are serviced in a different order than they would be if I/O were to go through ubago, and that the behaviour on 750s is different (uda.c allocates on BDP & set of map registers and keeps using it until the controller is done doing transfers on all drives). Is there a good reason for all this? It doesn't seem to be a problem with up* type drives. -- (This mind accidently left blank.) In-Real-Life: Chris Torek, Univ of MD Comp Sci (301) 454-7690 UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris@maryland