Re: Help: Unidisk 5.25

[spec@vax2.concordia.ca (Mitchell Spector)]

In article dalloff@freenet.columbus.oh.us (Dave Althoff) writes...

>Randy Shackelford (shack@deimos.frii.com) wrote:
>: In article <32e80dc9.853396@167.152.149.11>,
>: Edhel Iaur, Esq. <drsmooth@relex.com> wrote:
>: >On 23 Jan 1997 03:39:23 GMT, biglous@aol.com (BigLouS) wrote:
>: >
>: >>I recently picked up a 5.25 Unidisk. It has a beige case, a colored apple
>: >>logo and a 25 pin DB connector. It's Apple P/N A9M0104. Can someone tell
>: >>me something about it?
>: >
>: >It's the same 140K 5.25" drive as all the other Apple drives are, with
>: >the possible difference of having a DB-25 connector and a daisy-chain
>: >port.
> 
>: More precisely, it's the exact same unit as the grey 5.25 drive, before
>: it was made grey and given a name change when the IIgs came out.
>: -- 
>: Randy Shackelford                                 
>: shack@frii.com                                    
> 
>Waidaminit...I don't have the part numbers in front of me, but I'm a bit
>suspicious.  Are you sure that is a DB-25?  If it is a *DB-19* then
>everyone is absolutely correct; this is an Apple 5.25 Drive.

    From what I recall, the UniDisk 5.25 did have a DB25 female 
connector on the back (just as a DuoDisk 5.25 had). It included
a DB25 to DB19 cable to plug into this port and was _removable_,
unlike the Apple 5.25 which just has a DB19 coming out the back.

>But wasn't there also a beige Apple 5.25" drive designed to connect 
>to Macintoshes but designed to read MFM disks?  I think I saw one *once*...

    That was the 'Apple PC 5.25' drive. It was a DD/DS 360K (MFM) 
PC style drive in a platinum-grey case. It did not connect directly 
to the Macintosh, it required a special NuBus slot controller card.
It certaintly was not Apple II compatible in any way (in terms of
connecting to an Apple II model or reading Apple II floppy disks).

>But maybe I'm suffering from faulty memory.  Also, if the drive in
>question has a DB-19 connector on the cable but lacks a daisy-chain port,
>then it is probably a drive for a IIc.  It will work with other ]['s, but
>for obvious reasons would have to be the last drive in the chain.

    Nope, those drives were labeled "Disk //c" and had a model number 
A2M4050; not too mention they only came in the snow-white color scheme.
(mine unfortunately, is currently a yellowly-white color, thanks to it's
former owner who left it sitting by a sunny window no doubt :/).

Mitchell Spector
spec@vax2.concordia.ca