I have finally got around to testing my KDA50 with some RA7x disks. I want to install the KDA50 in my VAX 4000-500. This is a BA440 enclosure. I understand that this enclosure only has Q22/CD slots. The KDA50 User Guide seems to suggest that I need to remove Bus Grant jumpers W2 and W3 for this kind of slot. The jumpers are hard wired resistors.
I am pretty sure when I first got the KDA50 I briefly installed it without checking the Bus Grant jumpers and it appeared to work in that the LEDS displayed a cycling pattern to suggest that the self test at least was passing. When I did this, my notes show that a second UQSSP controller appeared in the output of SHOW DEVICE and it also showed up at 772150 in the SHOW QBUS command output.
So, the burning question is this: do I need to remove the hard wired W2 and W3 jumpers? If not, could there be a detrimental effect?
Thanks
Rob
I am pretty sure when I first got the KDA50 I briefly installed it without checking the Bus Grant jumpers and it appeared to work in that the LEDS displayed a cycling pattern to suggest that the self test at least was passing. When I did this, my notes show that a second UQSSP controller appeared in the output of SHOW DEVICE and it also showed up at 772150 in the SHOW QBUS command output.
So, the burning question is this: do I need to remove the hard wired W2 and W3 jumpers? If not, could there be a detrimental effect?
Thanks
Rob