[HECnet] RSX-11 setback

On 2014-05-21 01:45, Cory Smelosky wrote: On Wed, 21 May 2014, Johnny Billquist wrote: ...is my backplane not 22-bit?! I know very very little about it. http://bitsavers.trailing-edge.com/pdf/clearpoint/Clearpoint_QRAM-22B_User_… is the RAM board, http://bitsavers.trailing-edge.com/pdf/cmd/MAN-000420-000_CQD-420_May94.pdf is my SCSI controller.\ I tried a MicroVAX II in this backplane earlier and it...errr started to smoke and the little display panel just said F. Smoked the uVAX? That's a bad sign. I would otherwise have guessed that maybe your memory card is not actually strapped to address 0 when you look at all 22 bits? Yeah! It smoked the VAX II! It could've been user error...but how the hell could I plug the breakout in wrong and have it smoke?! Starting to think the backplane mayyyyy be wonky. I have some vague memory that the 4 high address bits initially had power on them before they were redesignated. And that would explain your smoke... Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol