Re: 9114A/B related question Message #18 Posted by Vieira, Luiz C. (Brazil) on 27 Nov 2002, 9:32 p.m., in response to message #17 by Vassilis Prevelakis
Hi;
I've been wondering about the rotating speed. Would it be related to transfer rate? I have seen different standard PC floppies with different rotating speed; slightly different speed, enough we could notice by looking and measuring the time each drive would read and write the same file in the same computer.
Oh, yes; I should also consider Logic compatibility among electrical compatibility. I saw many portable floppy-drivers, and each of them has its own flex connector with different size, shape and (?) # of conductors. I have never found the time to check if they could be interchanged with each other, but the basic PC floppy controller is a standard for the PC's, right? But in the portable world, same electrical characteristics and standard do not necessarily mean same circuitry or wiring. Except for their Hard Disks, that also use the flat cable to power them.
I'd like to understand if the drivers are really 9114B dedicated units or if their transfer rate was reduced so it could be used with its electronics.
Would HP use a different drive for the 9114A/B? How different are they? Based on Vassilis' answer, I believe they have, indeed, used an specific assy.
I do not dare thinking of this event, but I'll try to collect as much data about the 9114A/B driver unit as I can, because I have a few unrepairable standard PC floppies and I'd like not to retire my 9114A/B because the driver unit no longer works. If we can format a LIF disk in a PC-like computer and later use it in the 9114A/B, I imagine transfer rate is the cause for a different rotating speed. In this case, a faster driver would be useless, of course.
Did anyone try something closer to this? Just in case we do not have original 914A/B drivers to replace.
Thank you, Vassilis; as always, your posts (as many others' posts) are full of good and concise information.
Cheers.
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