Corvus Floppy Drive?

From: Curt Vendel <curt_at_atari-history.com>
Date: Mon Nov 19 10:44:42 2001

Frank,

    Great info, I'll work with the TIFF's and see if I can clean them up a
little and mess around with making one and try it out.


Curt


----- Original Message -----
From: "Frank McConnell" <fmc_at_reanimators.org>
To: <classiccmp_at_classiccmp.org>
Sent: Sunday, November 18, 2001 10:55 PM
Subject: Re: Corvus Floppy Drive?


> "Curt Vendel" <curt_at_atari-history.com> wrote:
> (Re: Corvus floppy disk controllers)
> > If you run across the schematic I would be willing to pay for any
copying
> > and postage, thanks again Frank.
>
> Take a look at:
>
> http://www.reanimators.org/tmp/corvus-fdc.d300.tiff
> http://www.reanimators.org/tmp/corvus-fdc.d600.tiff
>
> Both are TIFF class F group 4 scans, one is at 300 DPI, one is at 600
> DPI. The "original" that I have is a crappy photocopy so, well, good
> luck reading them. I'll talk to Al and see if he wants to adopt these
> or point me to a better scan.
>
> The 8" floppy controller also has a space on the board for a
> 34-pin connector, but it's not stuffed.
>
> I got this controller and schematic from an advertisement in Computer
> Shopper in the mid-to-late 1980s, offering an 8" floppy controller for
> the Apple ][. Sadly, at the time I didn't have a WDC 1793 data sheet
> so my efforts at programming the thing were frustrated and I got
> distracted by other things.
>
> Then there's the 5.25" floppy drive. I got that out too and had
> a look at it.
>
> The drive is a Corvus model FLP-5, Rev C, s/n 404-G1018-. It's a
> metal upright case screwed together and to a half-height 5.25" floppy
> drive, in this case a TEC FB504 (which is a double-sided "quad
> density" 720KB drive, so I'm guessing 96 tracks per inch) strapped for
> DS0 and with terminating resistor pack installed.
>
> The 5.25" drive is connected to a different controller. The
> silkscreen on the board calls it a "BUFFERED FLOPPY CONTROLLER", and
> there's a handwritten part number, "8010-10149 REV A". It's laid out
> differently and is clearly a different design: it's got a NEC D765AC
> FDC, and also has a power connector through which the controller card
> supplies power to the drive; the power cable and a 34-pin flat cable are
> bundled together in a sort of plastic zip-lock wrapper.
>
> I've no idea what this 5.25" drive was used with. Along about 1996
> there were some cleanouts of cupboards and storage rooms at The
> Wollongong Group (where I worked at the time), and there was this
> drive and controller (which I got) and a Corvus hard disk (which I
> didn't get). I didn't see a Concept there. I do know that several
> folks came from Corvus to Wollongong in the mid-1980s (before I got
> there) and guess that they brought this stuff with them.
>
> -Frank McConnell
>
Received on Mon Nov 19 2001 - 10:44:42 GMT

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