Items Wanted

[Jay Jaeger]

On 7/20/2021 7:34 PM, Josh Dersch wrote:
> On Tue, Jul 20, 2021 at 4:06 PM Jay Jaeger via cctalk 
> <cctalk at classiccmp.org <mailto:cctalk at classiccmp.org>> wrote:
> 
>     On 7/20/2021 6:59 AM, Eric Moore wrote:
>      >
>      >
>      >      >> 11) ESDI disk emulator
>      >      >
>      >      > I am not aware of any such beasties in the wild.  MFM,
>     yes, but I
>      >     haven't seen ESDI.   I would love for such a thing to exist,
>      >     thinking of my Apollo, 3B2 and IBM RT/PC workstations.
>      >
>      >     I’d also love to have one of these, preferably using SD or CF
>      >     cards.  The Webster WQESD/04 card is a fantastic card, it’s only
>      >     downfall is that it works with ESDI drives, rather than SCSI, and
>      >     they’re big and loud. :-)
>      >
>      >     Zane
>      >
>      >
>      > http://www.datexdsm.com/ESDI.php
>     <http://www.datexdsm.com/ESDI.php> <http://www.datexdsm.com/ESDI.php
>     <http://www.datexdsm.com/ESDI.php>> is
>      > what I was thinking of. There are a couple other commercial
>     models out
>      > there on offer, no one seems to have one though in the discord or
>      > apparently here :)
>      >
>      > -Eric
>      >
>      >
> 
>     I fear these, as well as those shown on one or two other websites, are
>     vapor-ware.  The MFM emulators all seem out of stock, the ESDI emulator
>     (DWX750) "documentation" is not even a page - just a "blurb".
> 
> 
> I had a similar experience with a set of emulators made by Arraid -- LCM 
> inquired about one of their SMD emulators 
> (https://www.arraid.com/data-storage-products/product/aem-1.html 
> <https://www.arraid.com/data-storage-products/product/aem-1.html>) and 
> the response we got was "we can no longer source the parts to 
> manufacture these, we have a few remaining in stock that we will sell 
> for $10,000 a piece."  We did not purchase one.
> 
> I suspect that even if you could find someone to sell you one of these 
> emulators, they would be extremely expensive.  I have never seen one for 
> sale on the used market.  If you find one, consider yourself lucky.  If 
> anyone *DOES* have one of these SMD emulators and wants to find a new 
> home for it, do drop me a line.
> 
> - Josh
> 
> 
>     JRJ
> 

For SMD, this patent may have been a bit of a stumbling block at one 
time, though if it was approved, it would have expired long ago.

https://patents.google.com/patent/WO1990001193A1/en

JRJ