> On Jun 15, 2015, at 8:57 AM, Mark J. Blair <n...@nf6x.net> wrote: > > Has anybody ever made a UNIBUS repeater with a high speed serial link between > the bus segments yet? I'm curious because my VAX-11/730 backplane is full, > and it would be nice to be able to experiment with additional hardware > without needing to pull out one of the existing boards, i.e., adding a TK50 > interface without removing the DEUNA, adding a SCSI card to boot from a > scsi2sd without pulling the integrated drive controller, etc. There's a blank > spot in the TU80 cabinet that looks like it may be tall enough for an > expansion chassis, but the thought of adding more big ribbon cables to the > belly plate area and then routing them between racks doesn't appeal to me. > Running something like a CAT5 cable between the two racks would be a lot > easier. Another application would be for placing a small remote UNIBUS > backplane on the test bench for easy access, and cabling it to a VAX or > PDP-11 elsewhere in the room. > > This should be quite possible with modern hardware, but I'm curious about > whether something similar has been done before.
I'm not specifically familiar with the 11/730, but what's wrong with just cabling up an expansion box "the old fashioned way" using BC11A cable? TTFN - Guy
