Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!elroy.jpl.nasa.gov!swrinde!mips!cs.uoregon.edu!ns.uoregon.edu!milton!uw-beaver!fluke!alz From: alz@tc.fluke.COM (Al Weiss) Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: Connor 3104 drive jumpers Message-ID: <1991May10.161436.7204@tc.fluke.COM> Date: 10 May 91 16:14:36 GMT References: <28348@hydra.gatech.EDU> Distribution: na Organization: John Fluke Mfg. Co., Inc., Everett, WA Lines: 49 In article <28348@hydra.gatech.EDU> kt4@prism.gatech.EDU (Ken Thompson) writes: > I am trying to install a 2nd connor 3104 100 MB IDE hard disk on my >386 machine. Unfortunately I do not have documentation on the drive jumpers. > . . . >Any info would be appreciated. Please reply directly. Here is info for the cp3044 which should be close to your 3104. This is copied without permission from the Conner manual: HSP, when jumpered, connectes the -HOST SLV/ACT signal on the interface to ground for systems that require the slave drive to provide -SLAVE PRESENT signal in a two-drive system. C/D is the address jumper. When jumpered, the master (or C drive) is selected. When open, the slave (or D drive) is selected. DSP, when jumpered, indicates to the master drive that a slave is present. In a two-drive system, this jumper option must be installed in the master, or C drive. The last jumper, ACT, connects the -ACTIVE signal to the -HOST SLV/ACT signal on the interface. This signal provides tha capability to drive an external LED. An external current limiting resistor is required. As an alternative, an LED may be connected between J4, pins 1 and 2. This would provide both an open collector drive signal and a current limiting resistor connected to +5V respectively. The following table shows what the jumper settings whould be for various system configurations. 1 drive 2 drive master 2 drive slave ACT J note 1 note 1 C/D J J NJ HSP NJ NJ note 2 DSP NJ J NJ note 1: In a two-drive system, it is possible to drive one LED with both drives. An external current limiting resistor is required. note2: If the drive is connected to a host that reauires that the signal -DRIVE SLAVE PRESENT be supplied from the slave drive via the interface signal -HOST SLV/ACT, then this jumper must be installed. If this jumper is installed, the ACT jumper must not be installed because the jumpers are mutually exclusive. -- Al Weiss alz@tc.fluke.com 206-356-5252 John Fluke Mfg. Co., Inc. MS-269 PO Box 9090 Everett, WA 98206-9090 USA