Jay wrote: >i would probably be wiser to look for a way to convert this internal >drive to an external one, by getting a regular scsi 50 pin case for it, >and an external cable to go into the scsi chain or nubus card.
Yes. >the back end pinouts on the internal drive: are they the same as the >pinouts that pass thru the back end of an external case? meaning, would >'internal 50 pin scsi ribbon' plug equally into the back end of my >internally-cased cd rom drive, as they would into the pins on the back >end of an externally cased cd rom drive? Yes. All SCSI devices that Vintage Macs can deal with have that same 50 pin connector, suitable for a (case-internal) ribbon cable. In external cases, just such a ribbon cable runs from the device that's in there to the back of the case, connecting to 2 external connectors. This is contrary to the mac itself, where the ribbon cable runs to the logic board. The External SCSI cable just conveys the same 50 signals, it's only made much rugged, and disconnectable. >and vice versa: could I plug an external 50 pin scsi cable to the back >end of my internal drive, sit the drive on my worksurface like an >external case, and plug the other end of the external cable into the >scsi port on my nubus card for scsi input? 1. Having a Nubus card with a SCSI connector, yes. But you still need a power cord. >or failing that, could i go so far as to set the internally cased cd rom >drive out on my tabletop, but plug the internal scsi ribbon cable to the >back of it, and then run the ribbon into the case, thru the open nubus >slot, and attach the business end of the scsi ribbon cable to the >motherboard--or the logic board- the same as if I *had* set the cd-rom >inside the case, as expected to, on the framework? >is there any reason not to? No, but you still need a power cord. 2. Not having a Nubus SCSI card, then: there is only one SCSI ribbon connector on the logic board, so you need one very long internal ribbon to connect both the HD and CD-drive to, a 3-way ribbon so to speak. Plus a power cord alongside it, also 3-way. >is there any reason not to? No, just that it might turn out to be a lot of (hard) work a still have a bit of a messy DIY look in the end:) If you have 3-way internal cables, I'd cut that hole in the mac. If you don't, go for externally. Earlier this week, I added 3rd connectors to SCSI ribbon and a power cord. It can be done. Feel free to ask if you need the details (like how and when to use the hammer) >janet -mart -- Vintage Macs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Vintage Macs list info: <http://lowendmac.com/lists/vintagemacs.shtml> The FAQ: <http://macfaq.org/> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/vintage.macs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
