21 Sep
2005
21 Sep
'05
8 p.m.
Curt:
I saw an old post of yours from 2003 included below, about the
RLV12.
I am working on a hobby/project to copy a large collection of my old
software from RL02. I was wondering if you ever got your RLV12 to work
with the VAX? I was under the impression that because the RLV12 controler
was old PDP11 DMA it could not handle the VAX MMU, so the DMA would write
the data to the wrong area of memory? I do know that DEC never supported
the RLV12 with any QBUS VAX.
Hi Todd,
Like others who've posted I've got an MVII running an RLV12 for VAX access
to my RL02s. As for DEC support I'm fairly sure the UK arm of DEC did,
certainly in the mid 1980s we had, well, the same VAX I've got now running
the same RLV12 with the same RL02.
DEC engineers were fine with it, even though I'd built the 3 RL02s into a
cab we'd rescued and I'd monikered it as an SA3RL02 :)
--
adrian/witchy
Binary Dinosaurs creator/curator
www.binarydinosaurs.co.uk - the UKs biggest home computer collection?