11/34a issues

Is there any good way to test the unit piece by piece? Also, I noted in the manual, it says BUS ERR only denotes a bus error on the console, not on the processor, whatever that means. I have now confirmed that my grant cards are in correctly (facing the correct direction). When is it exactly that I need a grant card? Do I need them whenever position D isn't occupied? Or is there a stipulation to that? I'm thoroughly confused. Mind you, I have not yet connected a console to it. Maybe I'll do that tonight. Henk (or anyone else) if you can offer further assistance with this, I'd really appreciate it. TIA Julian -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Gooijen, Henk Sent: Thursday, November 03, 2005 5:22 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: 11/34a issues Hi Julian, you have at least response from the console ... never mind :-) When you press EXAM (or DEP) the M7859 must do a UNIBUS access. Grant problems will turn on BUS ERR, so there lies you first point of interest to check out. You say "I get that BUS ERR no matter what I do". Please tell exactly what "no matter ..." actions are. I have no experience with core based 11/34's, so I can not tell anything more about your board placement. The manual will tell! However, (not sure), if you have some G7273's, replace the G727's and put the G7273 in position C-D. BTW, I am not sure of "All grant cards are installed where you could read FLIP CHIP from the processor side". I am not near my 11/34. If "FLIP CHIP" is in the etch on the side where the 4 BR contacts are, then they might be installed wrong in the slot! AFAIR, it should be like this (seen from above towards the backplane, I can check that this evening): slot X slot 2 slot 1 <[most right] __ M8265 M8266 | | position | | | | | | D | | | | | | ........... | | | | | | | | | | ----> | | | | | | |_| G727 | | | | this side | | | | has the | | | | contact | | | | fingers - Henk, PA8PDP. This message and attachment(s) are intended solely for the use of the addressee and may contain information that is privileged, confidential or otherwise exempt from disclosure under applicable law. If you are not the intended recipient or agent thereof responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by telephone and with a "reply" message. Thank you for your cooperation.