On Thursday, December 20, 2018 at 7:34:44 AM UTC-6, Pizzaboy192 wrote: > > Has anyone successfully run a modern 68Pin SCSI drive in a vintage Mac? > I've got about 50 from old servers at work, varying in size from 3GB up to > 72GB and most still work. >
Yes, many people have done this, including adapting the 80 pin SCA drives, which are wide just like a 68 pin drive, but use a connector meant for server applications and convenient for hot-plugging. However.... In order to do it right, you must get an adapter which includes a provision to terminate the upper data byte. If you do not, then the upper data byte on the drive connector will not be terminated and while this often does not cause problems, it is not correct SCSI configuration. SCSI voodoo does not happen because SCSI does not work when it should. SCSI voodoo happens because often SCSI still works, when it should not. Anyway, the $3 adapters don't have any provision on them for termination. The adapters with termination are typically closer to $20. This doesn't make much sense, because its just the addition of some resistor packs. If they can sell the cheaper adapters for $3, then terminated adapters shouldn't cost more than $10. We had a long discussion about this over on 68kmla.org some years ago. Some stuff became inaccessible after the latest forum update, and that discussion might be old enough to have been vulnerable, so I can't guarantee it's still accessible. Jeff Walther Jeff Walther -- -- ----- You received this message because you are a member of the Vintage Macs group. The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to vintage-macs@googlegroups.com To leave this group, send email to vintage-macs+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/vintage-macs Support for older Macs: http://lowendmac.com/services/ --- You received this message because you are subscribed to the Google Groups "Vintage Macs" group. To unsubscribe from this group and stop receiving emails from it, send an email to vintage-macs+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
