PerSci 277 floppy drives
doc at mdrconsult.com
Tue Mar 15 14:26:10 CST 2005
Randy McLaughlin wrote:
> From: "Doc Shipley" <doc at mdrconsult.com>
>> Looks like a standard 50-pin edge connector, yes. After reading a
>> little in the owner's manual, it's MFM, dual density, so worst case I
>> should be able to run it on an older PC-based FDC, right?
> The 277 is a fast repeat fast single sided floppy drive.
> The high-speed seek can be ignored but what can not be ignored is the
> track location. Being a dual drive both heads move at the same time,
> this can confuse some software.
> Details on making a 34 to 50 pin cable can be found on my website.
I've looked at that, but I don't have access to crimpers. Would the
line noise from a soldered strip-&-splice be excessive?
By the way, both your site and Herb Johnson's have been very helpful
> The Persci's also have a slew of jumpers, it is best just to try it the
> way it is.
So I've read. I also gathered that the jumpers are soldered 0-ohm
resistors, not shunt blocks. Correct?
> The Persci's are very sensative, shipping often destroys them. To ship
> it you need a special cardboard shipping retainer to keep the heads from
> slamming back and forth.
It shipped with the retainer in place. And the original packing, and
2 thick binders of documentation.
I wondered why he shipped it with only one insert, but if both heads
move in concert, that makes more sense.
> It also uses special wheat-lamps that burn out easily.
Uhhh. Are there replacements available?
Given the 277's temperament, I suppose I also need to see if the
PerSci 1070 will drive non-PerSci drives....
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