new disk controllers for DEC platforms (was Re: Q-bus to CF)

All true, although it might not be as bad as it sounds. There are a lot of people on this list, and some of them used old DEC computers and operating systems. Some of them might already know how to write a driver for one of these OSes - get a group of them together and you'll have all the old OSes covered. And it is fairly well documented how to write device drivers for at least RT, RSX and VMS. And the first thing you should do is hack up simh to include emulation of your proposed new "RQATA" interface card; then you could start writing drivers before the hardware was even done, and simh is a great tool for debugging the driver software. If you actually had a group of motivated (i.e. they were getting paid for it :-) people together it would not be that hard. OTOH, the SBC6120 was sort of my experiment in open source old computer development. I always hoped people would expand and add to it, both in hardware and software, but for the most part that never really happened. Most people wanted to buy a turnkey system that they could plug in, turn on, and start using it - people seem to have jobs, families and real lives and just don't have the time to do a lot of development. Bob