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
