Thanks for all the helpful information. The machine looks to be working. I found a few different key in programs. I can get to the console emulator prompt on the attached vt100. I keyed in a few short programs to write to the vt100 and they worked as expected. One step closer. I am about to install the disk drive controller and connect the drive, i do have a bunch of disks labeled for rsx, what is the procedure for booting off of a disk pack?
On Sat, Sep 24, 2016 at 4:11 AM, Don North <ak...@mindspring.com> wrote: > On 9/23/2016 6:15 PM, Paul Popelka wrote: > >> You might try looking at the M9312 proms that Don North has made >> available here: >> http://www.ak6dn.com/PDP-11/M9312/ >> >> If you have an M9312 in your system it will have the basic console prom >> in it. >> There are listings of the prom contents on that web page. >> >> There is also a simple diagnostic prom that loops forever near the bottom >> of the page. >> If you don't have an M9312 then you could probably key in a program from >> the rom listings provided. >> >> I'd bet Don will be along shortly to provide a better explanation. >> > > Basically correct. The 'ZZ' pseudo boot PROM I generated just runs the > basic diagnostics contained > within the associated 248F1 11/04-34 console PROM in a continuous loop. > > The diagnostics are very simple, and do a number of datapath and register > checks, as well as a low memory > (0-28KW) write/read/check confidence test. > > Not comprehensive by any means but having the diag in PROM and not reliant > on any peripherals (except > the console TTY interface) is sometimes a very useful starting point for > system debug. > > If anyone wants one of the programmed console PROMs (a 256x4 82S129) > programmed with the ZZ pattern > just ping me at the email address shown on the above mentioned website (or > this post). > > I can also provide programmed 82S129 devices for any of the other > available DEC boot PROMs should anyone > need one. > > Cost will be free for low quantities (ie one or two for personal use). > Cost negotiated for larger quantities. > > Don > >