Article View: vmsnet.misc
Article #151Re: RQDXE switches for 3 RD drives
From: Terry Kennedy, Operations Mgr.
Date: Mon, 12 Oct 1992 21:01
Date: Mon, 12 Oct 1992 21:01
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In article <1992Oct12.102348.214@cpvax.cpses.tu.com>, robert@cpvax.cpses.tu.com writes: > The default switch settings are used for RQDXE#1. There doesn't seem > to be any switches on any of the drives. (including RD54-D) What I > need is DIP switches for the second RQDXE. I've never seen two RQDXE's used in a chain. Doesn't mean it can't be done, though. Think of the RQDXE as a switch that steers individual drive selection to one or the other external connector. There are also some options for setting whether or not the connected devices are floppies or hard disks (had disks need ready/write protect support a little differently). So, you'd set the first RQDXE to send one drive select (likely DS3) to the CPU BA23's drive, and the other 3 (1, 2, and 4) to the second RQDXE. The second RQDXE will send DS4 to the BA23-C expander and route DS1 and DS2 off to the expansion box, but translated to DS3 and DS4 (you need this because the expan- der [RD5x-D] box only responds to DS3 and DS4). Terry Kennedy Operations Manager, Academic Computing terry@spcvxa.bitnet St. Peter's College, Jersey City, NJ USA terry@spcvxa.spc.edu +1 201 915 9381
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Path: arc1-ca.pugleaf.net!sparky!uunet!destroyer!gatech!rutgers!spcvxb!terry From: terry@spcvxb.spc.edu (Terry Kennedy, Operations Mgr.) Newsgroups: vmsnet.misc,comp.sys.dec,comp.os.vms Subject: Re: RQDXE switches for 3 RD drives Message-ID: <1992Oct12.170114.4096@spcvxb.spc.edu> Date: 12 Oct 92 21:01:14 GMT References: <1992Oct12.102348.214@cpvax.cpses.tu.com> Organization: St. Peter's College, US Lines: 20