I could pass through Champaign. -- Will On Wed, Jul 30, 2014 at 1:06 AM, Paul Anderson <useddec at gmail.com> wrote:

I am not really collecting any more DEC stuff unless it is really pretty old - pre-1972. However, perhaps we could uncover the VT11 board set Richard wants. -- Will On Wed, Jul 30, 2014 at 1:48 AM, Paul Anderson <useddec at gmail.com> wrote:

Hi Paul, Are you looking to sell a 780 or 785? Thanks, Todd * Paul Anderson <useddec at gmail.com> [140730 01:49]:

It is a 785 and he is looking for offers. We will try to get together later this week. I think I took these a year or 2 ago. https://www.flickr.com/photos/useddec/ He is looking for offers and I will try to get more pics. I have either a 780 or 785 backplane here, and a bunch of power supplies here also. For those who have shown interest, you better check with William or look into other shipping. Paul On Wed, Jul 30, 2014 at 12:48 AM, Paul Anderson <useddec at gmail.com> wrote:

On Jul 30, 2014, at 10:21 AM, Tom Uban <uban at ubanproductions.com> wrote: Well, it's a fairly niche product at this point, so not many companies see much profit in making one. But small USB- equipped microcontrollers which are more than capable of handling the bus at reasonably high speeds are pretty cheap these days, and the bus driver doesn't have to be overly sophisticated for a slow bus; I believe the SCSI2SD just uses 7406s for the bus driver, and its microcontroller (like many others) has 5v tolerant GPIOs. Another option for attaching SCSI drives, of course, would be to buy a SCSI PCI card; there are PCIe ones, but they're mostly Ultra320, and thus expensive (and require a chain of adaptors to attach to 20-pin single-ended SCSI). If you have a PCI slot, though, there are loads of low-end SCSI cards to be had for just a few bucks. You do lose the hot- plug benefit of USB at that point, of course. As a thought experiment, if one were to make a SCSI USB interface, what would be desired features? Mass storage capability is obviously useful for being able to burn disk images quickly and easily, but I would imagine a separate endpoint for raw SCSI commands (and configuration) would be absolutely essential. I'm not as familiar with USB Mass Storage protocol as I should be, but I understand it's SCSI-based; perhaps there's no need for a separate control endpoint for sending arbitrary commands? - Dave

On Jul 30, 2014 7:32 AM, "Tom Uban" <uban at ubanproductions.com> wrote: I think you're right that there was probably never much demand for USB SCSI adapters, at least not as high volume consumer items. There was probably only a short window of time before every consumer device which used to have a SCSI interface went with native USB. If they never sold in large numbers originally but you have a reason to want one now you run into the supply and demand issue when things are hard to find now. Back to your problem at hand, a native SCSI adapter in any sort of machine would almost certainly be a simpler solution, except for the issue of space taken up by a system that you might not otherwise use often. I set up a lunch box Pentium II system with an Adaptec PCI SCSI adapter that I drag out when I want to mess around with SCSI drives that I want to set up for older systems.

On Jul 30, 2014, at 08:31 , Mark G Thomas <Mark at Misty.com> wrote: I have tried one of those with both my Amiga 3000 and PDP-11 + Emulex UC07. I haven't gotten it to work with either system. I wonder if I just have a bad one? -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/

On 2014-07-30 08:21, Tom Uban wrote: Get yourself any of the scsi2sd-flash emulators. Much cheaper, software is open, so you can even play a little. USB is a pain in the neck ... On the USB2SCSI you still have to have drivers... Most of them don't even have (last time I checked) 64bit drivers etc. So one day you have an machine to maintain to use the eusb2scsi :(