xdaa374@ut-emx.UUCP (William T. Douglass) (08/04/89)
I need information about interfacing CDC Wrens & Macs. Specifically, we received 2 CDC Wrens (SCSI interface, 155MB formatted) without much installation documentation, interface hardware, and no software. While we are trying to resolve the issue with the supplier, we urgently need these drives on-line. So far, all efforts to locate either drive on the SCSI bus have failed. Either the SCSI bus hangs (no drives found, including the internal HD), or the systems boots normally, in which case both the Apple HD set-up program & Ephriam Vishniac's SF&I program fail to find the drive at the specified SCSI address. I am soliciting comments and/or opinions from people who have configured CDC Wrens for Macintosh use. Any bugs, pitfalls or other gotchas to watch out for would be appreciated. Configuration: Mac II w/ System 6.0.3 5 MB memory 40 MB Quantum internal HD CDC Wren 94161-155 (w/ SCSI controller, 155 MB capacity) Internal drive is SCSI ID 0, system is ID 7. Drive has been configured as ID 1, 2, 3, and 4. Terminators have been place integral to the drive, as well as on the SCSI cable itself. Terminator power has been specified as coming from the drive itself (not from the Mac.) Thanks for any & all responses. These drives are desperatly needed for our overcrowded file-server. I appreciate for your time in this matter. -- Bill Douglass, TCADA "I dreamed I was to take a test, in a Dairy Queen, on another planet." L. Anderson
km@cadre.dsl.PITTSBURGH.EDU (Ken Mitchum) (08/05/89)
I have been having a similar problem with Newbury 4380 drive (320 mb). The drive hangs the SCSI bus on a MacPlus (but not MacII), even with "Unit Attention" disabled. I wrote a small program to simply reset the SCSI bus, and after that is done, I can mount the drive manually, using the SCSI cdev. You might try the same thing - if you can get the drive to a state that will respond to inquiry commands, you can likely find out enough about the drive WITHOUT the manual to be able to get it up and running. Ken Mitchum km@cadre.dsl.pitt.edu
kaufman@polya.Stanford.EDU (Marc T. Kaufman) (08/05/89)
In article <16553@ut-emx.UUCP> xdaa374@ut-emx.UUCP (William T. Douglass) writes: >Configuration: > 40 MB Quantum internal HD > CDC Wren 94161-155 (w/ SCSI controller, 155 MB capacity) Internal drive is SCSI ID 0, system is ID 7. Drive has been configured as ID 1, 2, 3, and 4. Terminators have been place integral to the drive, as well as on the SCSI cable itself. Terminator power has been specified as coming from the drive itself (not from the Mac.) You have too many terminators. There is one on the Internal drive, one set in the Wren, and one one the cable. Take off the cable terminator. NB: Wren terminators are 3 SIP resistor packs on the edge of the circuit board nearest the SCSI connector. They are socketed. Remember the orientation if you remove them. Marc Kaufman (kaufman@polya.stanford.edu)
xdaa374@ut-emx.UUCP (William T. Douglass) (08/06/89)
My thanks to all who responded on the CDC Wren problem. We have successfully formatted & mounted the drives using the MagicDrive formatting program from the good people at MacProducts. Apparently the Wrens are used in some of their bigger drives. Now on to bigger & better thinks, like filling those drives up with stuff. -- Bill Douglass, TCADA "I dreamed I was to take a test, in a Dairy Queen, on another planet." L. Anderson