On 5/18/21 10:57 AM, Ethan O'Toole via vcf-midatlantic wrote:
There are a number of Bernoulli cards on feeBay. I remember the drives, but when I used them they were 44mb and SCSI as I recall.
https://www.ebay.com/itm/124405462633 Looks like a DB-37 cable is used as well.
Also, some of the boards on eBay have an EPROM (boot?), some don't. Some are missing a bunch of chips including what might be a pal/gal.
Lots of different versions but most seem to have DB-37.
Those are the earlier ones, 8" disks 10MB and 20MB. Looking at that board on eBay the memories are starting to come back. ;) There are a few different interfaces; the one you referenced above is the better one, with some buffering. Any of them should work I think. I remember that I used several different models on the 8" drives over the years. Incidentally, I currently use a pair of 44MB SCSI Bernoulli drives on my personal PDP-11/34 (here at home, not at LSSM) interfaced via a Unibus SCSI host adapter. I run RT-11, RSTS/E, and RSX-11M that way. Works a treat, and it's very handy for healing the soul when something stresses me out. -Dave -- Dave McGuire, AK4HZ New Kensington, PA