The backplane says that it is for a PDP-11/03 The chassis is missing the power supply.
The M8189 is a PDP-11/23+ KDF11-B PDP-11 CPU The FC202 is a Charles River Data Floppy Diskette board https://shop-pdp.net/~stuff/Pictures/index.php?dslct=/CRDS_FC-202_Floppy_Disk_Controller&index=0&size=0&debug=0 On Wed, Apr 10, 2024 at 7:14 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). > > There is only one board with a number on it, the M8189 board. I know that > is a fonz-11 board. > https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/M8189/ > > There are two other boards with no designation on them. Does anyone > recognize them? > This first one seems to have no "big chips" on it. But it has two > connectors that seem to allow another dual-height card to be plugged into > it. What is it? > https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/Board1/ > > The second one has this 50 pin IDC connector on it. Anyone recognize it? > https://w2hx.com/?prefix=x/What-Is-It/PDP-11-Thing/Board2/ > > Any info appreciated! > > 73 Eugene W2HX > My Youtube Channel: https://www.youtube.com/@w2hx/videos > > -- Michael Thompson
