Speaking of which, two of the boards that are different in the KB11-D, from the -A, are _identical_ to boards in the KB11-C - the M8123 ROM & ROM control and the M8132 instruction register decode! (The M8123 is also different from the M8133 board in the KB11-B.) Pretty wierd that the -11/45 and -11/70 CPUs share two boards, but true! (The FP11 boards are the same in both, too.) ISTR a previous, un-fulfilled request for the -11/70 wirelist, so it's been missing for a while. We _might_ have the -11/45 wirelist: http://www.bitsavers.org/pdf/dec/pdp11/1145/1145_System_Engineering_Drawing… but it's short (pp. 128-132), so maybe it's not complete)? Two other print sets seem to have the same list: http://www.bitsavers.org/pdf/dec/pdp11/1145/1145_System_Engineering_Drawing… http://www.bitsavers.org/pdf/dec/pdp11/1155/MP00039_1155vol1_Mar76.pdf (pp. 45-49 and pp 131-135 respectively). Heh. I didn't see it online; the manual: http://www.bitsavers.org/pdf/dec/unibus/CSS-MO-F-5.2-27_RH70_Option_Descrip… is a CSS document, which makes no sense, because the CPU backplane is laid out to have room for four, so it's an integral part of the /70 CPU - so why is it a CSS product? Anyway, the print set listed there seems like it might be a CSS thing, too. I see that the CHM seems to have a set: https://www.computerhistory.org/collections/catalog/102749003 so maybe Al will take pity on us and scan it! I looked in my /70 print set, and although it contains all sorts of odds and ends (including MJ11 prints - which kind of half makes sense, since that was the only main memory option on early /70's), it doesn't have the RH70. (I didn't see the MJ11 prints on BitSavers, so I was thinking I was going to have to scan them, but on further looking I found them on deramp.com.) Noel