Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!fernwood!portal!cup.portal.com!Azog-Thoth From: Azog-Thoth@cup.portal.com (William Thomas Daugustine) Newsgroups: comp.sys.dec Subject: PDP-11/34a help needed Message-ID: <42996@cup.portal.com> Date: Wed, 5 Jun 91 17:08:05 PDT Organization: The Portal System (TM) Distribution: na Today I tried to bring my PDP-11/34a back to life. Ive gotten a 128kw memory board, RK05 drives, and an RK11 controller for it. First before I installed all that, I wanted to make sure that the 'base' machine was working. Below is a graphic layout of the backplane. Pardon my poor rendition :-) 1 0 9 8 7 6 5 4 3 2 1 --------------------- A | | | | | | | | | | | A | | | | | | | | |M|M| T P ? | | B | | | | | | | | |8|8| B | | | | | | | | | | | --------------------- C | | | | | |1| | | | | C | | | | | | | | |2|2| M 6 M D | | | | | | | | |6|6| D |G|7|G|G|G|K|7|G| | | --------------------- E | |8| | | | |8| | | | E | | | | | | | | | | | 5 5 5 6 F | | | | | | | | | | | F | |6| | | | |9| | | | --------------------- 0 9 8 7 6 5 4 3 2 1 1 T = unibuss terminator G = grant P = parity memory module 16k = 16k module, MOS M7856 = DL11 M7859 = to front console ??? = cant find number, but also part of the front panel M8265 & M8266 = CPU set Notice that the grant cards are in D, third from the front (I may have my addressing mixed up) First off, just curious. I thought that unibuss backplanes came in two flavours: 9 and 4 slot. This is a 10 slot. Does it being an 34a have anything to do with it? Anyways. When I power on the machine, I get nothing on the console display (a terminal attached to the DL11). My main concern is: is the above layout a correct configuration? I dont care about not having a lot of memory, or no drives attached. But I thought that when you powered this beast on it gave you some sorta octal memory display, with an @ prompt, from which you can do things? I get nothing on my console. When I use the front panel to try to display addresses, I get a buss error LED. And also, could someone supply me with switch settings for the DL11? I thought that I had it set for 9600, but cant be sure. BTW: speaking of the DL11, does it matter if there is two in one machine? When i first got it, it had two, side by side. There is an empty 9-slot backplane next to the above, and next to that is the RK11 controller in its own 4-slot backplane. But neither are attached to the main one (that little funky card that jumpers slot A to slot A on another backplane? dont have the number handy right now) I know my description is problably vague, but Ive included as much info as I could think of. I know at one time that the machine was working, and am hoping that I didnt kill it! (I used to have the prints and a handbook for the 34a, but cant seem to find it :-/ ) Thanx to anyone who can help Billy D'Augustine Azog-Thoth@cup.portal.com