My knowledge of Qbus and Unibus is incredibly spars, but I would be interested in knowing how this pans out. At the very least, I would expect NetBSD to be able to see a keyboard attached to the VCB02?
Aaron. Josh Dersch via cctalk writes: > So I had a random thought in the wee hours this morning and I leave it > to you, the cctalk braintrust, to tell me exactly how stupid this idea > is: > > I have a VAX-11/750, an Able QNiverter (UNIBUS->Qbus adapter), a > 22-bit Qbus backplane, and a VCB02 (QDSS) 4-bit graphics boardset. > > Theory: With an appropriately modified NetBSD driver for the VCB02, > such that it provides only 18-bit addresses to the VCB02's DMA engine, > I can get X running on the VCB02 on the 11/750. > > That is, the configuration is: 11/750->Unibus->QNiverter->Qbus->VCB02. > > Obviously the console functionality of the VCB02 won't work since that > requires support on the VAX side of things that won't be present, but > I think everything else should work. I've browsed the technical > manual and I don't see anything that should get in the way, I'll just > need to hack up the driver appropriately. > > But this is something that randomly popped into my head (I was > inspired by a research paper, "A VAX Based Data Acquisition Computer > System at the Nuclear Structure Research Laboratory" wherein a Matrox > QRGB Qbus graphics board was lashed to an 11/750 in a similar > manner... > > What say you all? > > - Josh -- Aaron Jackson PhD Student, Computer Vision Laboratory, Uni of Nottingham http://aaronsplace.co.uk/
