Re: [pups] booting RT11 from alternate controller

I'll have to try this with the RQDX3 as primary and the SCSI as secondary. Maybe BSD is smart enough to do it right. In any case, I have the source for the BSD boot code, and I can fix it. It will be a pain, though, having to type the alternate address every time I boot BSD. I'd probably have to restructure /dev and /etc/fstab also, and who knows what else. Maybe it would be easier to change the jumpers if I needed to run RT11. I don't use RT11 that much, but I'd like to have it available. -- Jonathan Engdahl http://users.safeaccess.com/engdahl "The things which are seen are temporary, but the things which are not seen are eternal." II Cor. 4:18 ----- Original Message ----- From: "Fred N. van Kempen" <Fred.van.Kempen(a)microwalt.nl> To: "Jonathan Engdahl" <j.r.engdahl(a)adelphia.net> Sent: Wednesday, April 02, 2003 5:58 AM Subject: RE: [pups] booting RT11 from alternate controller Jonathan, This works for the ROM, but most PDP-11 operating systems will refuse to boot from anything but the "default" controller of any kind, meaning, an MSCP controller it will only accept at 172150. The OS itself can deal with them, but not so for the boot-level code that loads them. I have tried similar setups with an 11/83 using an ESDI disk controller at MSCP #0 (doing KDA50 emu), and an RQDX3 at MSCP #1 (just for the floppies, indeed) and that didnt work either, with RT11, MicroRSX and Ultrix. --f