Thanks Don. I did read that thread previously but I will do so again in case I missed a finer point in it.
Rich Sent from my iPhone > On Mar 10, 2016, at 11:09 PM, Don North <no...@alum.mit.edu> wrote: > >> On 3/10/2016 7:02 PM, j...@cimmeri.com wrote: >>> On 3/10/2016 9:36 PM, Richard Cini wrote: >>> Separately… John — the SLUs are at what I think are the standard addresses >>> and vectors (per the Heathkit and DLV11-J manuals) and the ODT and TU58EM >>> work. I don’t know what RT-11 is looking for but the console @ 177560/60 >>> and TU58 @ 176500/300 (Channel 3 and Channel 0 in DLV11-J parlance). I have >>> not tried booting SIMH with the TU58 image (not sure how to do that; need >>> to work on it). Regarding getting a real RX01 or RL02, the issue for me is >>> space. It’s pretty convenient using a laptop and TU58EM (providing I can >>> get something other than XXDPD2D to work). If someone has already built >>> bootable TU58 RT-11 images, I haven’t found them yet. >> >> I have doubts that taking an RK05 image, and copying the DD: bootstrap in >> like that, and then simply taking that modified RK05 image and attempting to >> boot it as a TU58... I'm not sure if that could work. Just seems like >> there'd been some structural differences. But I could be wrong. >> >> I forget if either SIMH or Ersatz emulates a TU58.. but if they do, try >> making an empty tape container (I think TU58EM can do this) and then build >> up and RT11 system as outlined in the manual using one of the emulators. >> Make sure it can boot in the emulator (if that's possible). >> >> Do you know for sure if a real TU58 can even run RT-11? Never tried it. >> >> p.s. you could also get yourself a qbus SCSI card, and have a much smaller >> disk subsystem. >> >> - J. > > Creating/running an RT-11 image on a TU58 tape, and then booting/running it > under TU58EM has been > discussed in the past. I would suggest reading thru this thread, as it did > succeed in building a bootable > TU58 RT-11 image: > > http://www.vcfed.org/forum/showthread.php?39372-Wanted-RT-11-OS-as-a-TU-58-image/page2&highlight=tu58em > > RT-11 can run from a TU58 disk (tape) as demonstrated above, on real PDP-11 > hardware. > > SIMH has never directly supported mounting/attaching virtual TU58 devices. > Altho the required serial interface > is emulated (ie, a plain DL11 at 776500/300) the TU58 drive behind the serial > interface has never been emulated. > > Theoretically one could attach the emulated serial port in SIMH to a real > serial port that TU58EM is connected to > (or use something like comOcom on windows to wire together virtual serial > ports) and run TU58EM with SIMH, > but I know of noone doing this (I never have, altho I believe it is > technically possible to do). > > I believe that ERSATZ-11 has integrated support for TU58 image support > mounting, so that might be the way > to go to build a TU58 image under simulation. > > I have seen rumblings that someone might be working on a virtual TU58 device > for SIMH, but maybe it is just > an idea at this point for a rainy day. The code would be pretty > straightforward I suspect. > > Don
