WTB: Pro380, VAXstation

Jerome Fine replies: It may also depend on how many PRO380 systems are still around as opposed to PDP-11/73 systems. I often found PDP-11/73 systems available for tossing up to about 5 years ago. Why DEC did not make this feature generally available is not clear. Probably the competition from the PC was not sufficient until after around 1989 when the 486 became available. By that time, DEC was already attempting to kill the PDP-11 in general and RT-11 in particular, or so it seems from what DEC was doing. V05.05 was released in October 1989. V05.06 was released in August 1992 WITHOUT being fully Y2K compliant. As far as I can see, all RT-11 distributions starting with V05.01 in 1984 can run on the DEC PRO series. They use the monitor RT11PI.SYS and device drivers DW.SYS and DZ.SYS plus PI.SYS must also be present. Of course, booting an RX50 floppy requires that the user set up the boot blocks as well, usually not on a PRO. The command would be: COPY/BOOT:DZ DU0:RT11PI.SYS DU0: Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.