Great! thank you Glen and also Michael T. for the identifications. So this appears to be a PDP-11/23 with this FC-202 floppy controller.
1. I have read that the card and the drives were compatible with the dec rx02 drives. Why would the CRDS even bother to redesign a card where DEC had perfectly good working ones? Anyone know if there is any value in keeping the FC-202 or just keep with the DEC cards? 2. Any idea on that other card? https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/Board1/ Thanks guys! 73 Eugene W2HX My Youtube Channel: https://www.youtube.com/@w2hx/videos -----Original Message----- From: Glen Slick via cctalk <cctalk@classiccmp.org> Sent: Wednesday, April 10, 2024 7:44 PM To: General Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org> Cc: Glen Slick <glen.sl...@gmail.com> Subject: [cctalk] Re: PDP-11 thingy. What is it? On Wed, Apr 10, 2024, 4:14 PM W2HX via cctalk <cctalk@classiccmp.org> wrote: > Hi all, I picked up this PDP-11 thing. Can anyone help me understand > what it is? > Pictures are here: > https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/ > > I could not find any designation on the backplane. It is a > wire-wrappable backplane. I don't know if it is Qbus, unibus or > whether it is 18 or 22 bit addressing (this is because I am a newbie in this > area). > H9270 Backplane, Page 366 (page 376 of the pdf) http://www.bitsavers.org/pdf/dec/qbus/EB-23144-18_QbusIntrfs_1983.pdf
