FW: Problems with a PDP-11/04

>From: hamster(a)telnet.hu >Newsgroups: alt.sys.pdp11 >Subject: Problems with a PDP-11/04 >Date: Fri, 11 Dec 1998 07:22:51 GMT >Organization: Deja News - The Leader in Internet Discussion >Lines: 54 >Message-ID: <74qh8b$vl3$1(a)nnrp1.dejanews.com> >NNTP-Posting-Host: 194.149.0.154 >X-Article-Creation-Date: Fri Dec 11 07:22:51 1998 GMT >X-Http-User-Agent: Mozilla/3.04Gold (X11; I; Linux 2.0.34 i586) >X-Http-Proxy: 1.0 proxy.datanet.hu:3128 (Squid/1.1.22), 1.0 x14.dejanews.com:80 (Squid/1.1.22) for client 195.56.133.225, 194.149.0.154 >Path: blushng.jps.net!news.pbi.net!151.142.220.3!WCG!feed1.news.rcn.net!rcn!news.maxwell.syr.edu!nntp2.dejanews.com!nnrp1.dejanews.com!not-for-mail > >I post this message for the second time, as I haven't seen the first try >in any of the groups I posted it to... :-( > >I acquired a PDP11/04 last week. It's my first UNIBUS -11, so I don't >really know how to get it working again... >The machine is in a BA-11KA drawer (rev m, eco 0015; the whole machine >was labeled "LANDIS & GYR VISIONIX 4000). It has two DD-11DK system >units (only the first is used), with the following cards in it: >M7263, 2 x M7856, 32K core, M9312, M7262, M9302, G727A. I know what these >cards are, my problem is that I don't know this backplane enough, and I >don't know what to expect from the system. After I >got the machine, I cleaned it, examined the cards for anything strange - >haven't found anything. Then I put back the cards, in the order they were >originally (there were stickers on the side of the chassis showing the >modules' places). One of the DL11W's is configured as the console (at the >proper address; also at 110 baud, 5 data bits, odd parity, 2 stop bits, >active current lopp Rx, passive Tx), it has a BC05C-25 cable leading >out of the chassis. I checked with a multimeter (I haven't got a scope, >and even if I'd have, I'm not familiar with it), there's _something_ >on the DB25F connector. Right now I have two choices: to get the DL11W >working with an EIA-interfaced CRT terminal) to see if the CPU is working, >or check this some different way (without a scope that is; am I beeing >impatient?:) The machine has the simple "frontpanel": OFF/ON/STDBY, >RUN/HALT, BOOT/INIT switches, RUN and DCOK LED. >So my questions: > >1. what are the settings for a EIA console on a DL11W? I've tried to set >9600, 8N1 according the manuals, but I don't know what to do next, about >the current loop interface, about the cable (nullmodem? straight? with >modem control?), as I still have nothing on the VT (and I know that this >could be my fault...) > >2. How do I know if the CPU is really running? (the DCOK LED is on, and if >I switch "RUN", the RUN LED lights up, but does this really reflects the >state of the CPU and the bus? There's the RL controller on the bus, when >the drives are connected to it, and are switched on, the RL01's "FAULT" >light turn off (I was told the drives need timing signals from the >controller; they get it as I interpret this behaviour), but that's about >everything I know from the cards in the chassis. Is there a safe method to >see if the bus is okay, like pulling out cards and/or moving them around? >I don't want to mess something up with all these modified/SPC slots... > >Thanks for your time! > > / ___ _ _ ___ ____ ___ ___ > /__//__///_///__ / /_ / ) Varga Akos Endre hamster(a)telnet.hu >/ // // /___/ / /__ / ( www.telnet.hu/hamster/english.html >----------------------------------------------------------------------- > "Museum" http://www.internetto.hu/muzeum/e_kiallitas.html >----------------------------------------------------------------------- > > >-----------== Posted via Deja News, The Discussion Network ==---------- >http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own