On 11/2/10 3:48 PM, Al Kossow wrote: After a week of digging around, I did finally come up with the connectors. I ended up getting MRAC connectors (separate pins and shells), with the shell from one source and pins from another. The pins are used in V.35 connectors, so they are easy to find. 42 pin MRAC shells were only made by Winchester, but there was a local source ($100 minimum though)

On 11/11/10 9:53 AM, Richard wrote: The shells will be used for another project. I've started designing a board to do Diablo 31 disk simulation and experimental to standard ethernet conversion for the Alto, (along with a bunch of other useful things). It will bolt onto the back of the first drive, and get power from the +5v terminator power pin. A high density 68 pin cable replaces the cable from the drive interface board to the first drive, and also brings across the tx,rx, and collision signals from the ethernet board. The new board can either source or sink the command lines on the drive bus, so it can also be used as a tester or drive reader/writer so it will be possible to read and copy 2315 packs in any format. I have a bunch of Burroughs B1700 packs in the CHM collection I've been dying to try to recover. This all started yesterday when I stumbled upon these on eBay http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130453759896 which are 200MHz ARM 9 boards with a user-programmable Cyclone II FPGA for $35 (I bought 10..) Hopefully, they'll be the base for a couple of different 14" drive recovery designs.

I was wondering it a jigsaw session or delron machine could solve the shell problem. I saw the V.35 connectors, and figured out the pins. I wonder how they do the detents inside the shells to retain the pins if one were machining it yourself with an NC plastic machine of some sort. Jim On 11/11/2010 9:41 AM, Al Kossow wrote: