hurf@batcomputer.tn.cornell.edu (Hurf Sheldon) (05/21/87)
We have two uVaxen - one ba-23 one ba-123 and a minc-23.
We are outgrowing the ba-23 and the minc sits idle. I have seen
some tantalizing hints to the effect that the minc QBUS can be
used to extend the ba-23 and/or have some wires added in the first
couple of slots to allow uVax memory & processor board to work.
I would appreciate direct information about this and/or
pointers to sources of information about this.
thanks,
hurf
.
--
Hurf Sheldon Network: hurf@ionvax.tn.cornell.edu
Lab of Plasma Studies Bitnet: hurf@CRNLION
369 Upson Hall, Cornell University, Ithaca, N.Y. 14853 ph:607 255 7267
I sold my Elan, got a job in science; Now, no one takes me seriously.cetron@utah-cs.UUCP (Edward J Cetron) (05/22/87)
first find yourself a qbus manual with pin definitions. Then connect (by soldering to the backplane of the minc lines qdal(16-21) which are the 4 upper 22-bit qbus lines. you know have a 22-bit backplane 'cept for one small problem if you have any minc cards still in it - several minc cards USED bdal(16-21) for other things so you will likely have to make sure that bdal(16-21) in the cpu card cage is isolated from bdal(16-21) in the minc instrumentation bus section. you should then be able to get a set of cables (don't remember the part number) to connect the ba23 to the minc backplane. As for making a mincro-vax (yea i thought up the name) you do the above and move the cards over. Now that I think of it, I don't remember which part of the backplane was q/q and which was q/cd but I do remember that there WAS a way to do it (it may have required the ba23 and cables...) you will also have to add 4 resistors to the bdv11 bootstrap-terminator card to match lines bdal(16-21) -ed cetron cetron@cs.utah.edu cetron@utahcca.bitnet