Hi Jon, I have downloaded your zip-file and will take a look at it.
I have managed to create tape images using RSX11M+ running in simh and using VCP to create a TS11 image. The TS11 device was able to read the tape images I have for simh. So that way I was able to look at the contents of the tape, and then use BRU to restore everything. After that I wrote a very basic CMD-file that put everything I had restored onto a tape image connected via VCP in the same order as the original. After that, I NFTed the images I had created to my PDP-11/23+ in blocked image mode. Once that was done, I used VCP to connect the images and I could restore the auto-installer and run @autoin to install both PDP-11 C and Fortran 77. So now I have C and F77 on my PDP-11/23+! I don't know if those VCP images are like actual raw images that could have come off of a physical tape, but at least I can access them using VCP on my hardware so I'm happy. Next I am going to attempt to compile your tapedup utility and see how that goes. I have never written or compiled anything in Fortran77 before so it will be interesting. -Peter On Wed, Apr 16, 2025 at 4:56 PM Jon Elson via cctalk <[email protected]> wrote: > On 4/16/25 12:40, Peter Ekstrom via cctalk wrote: > > On Wed, Apr 16, 2025 at 1:21 PM Jon Elson via cctalk < > [email protected]> > > wrote: > > > >> On 4/16/25 11:53, Peter Ekstrom via cctalk wrote: > >>> Hello all, > >>> > >>> I have transferred some simh .tap files to my PDP-11/23+ running > RSX11M+. > >>> There I have tried to use VCP to attach them to a virtual device but I > >> keep > >>> getting an invalid record format error. I then realized the simh .tap > >> files > >>> most likely aren't organized correctly. If I attach them to TS0 in > simh I > >>> can work with them. So now I am trying duplicate a tape into a new .tap > >>> file created using VCP. I can't for the life of me get it to work > though. > >>> BRU doesn't support tape-to-tape and FLX doesn't complain but also > never > >>> completes. Is there a process for tape duplication under RSX? > >> I wrote some stand-alone programs that did mag tape copies, > >> and directory listings in Fortran on RSX-11M and VMS. > >> > >> I could send you these if you have Fortran on your system. > >> > >> Jon > >> > >> Hi Jon, > > That is part of my dilemma, I am trying to install Fortran among others. > > But being a physical machine, the SIMH images aren't working. > > I'd still be interested in the programs though if you don't mind sharing. > > > Well, actually, I have an RSX-11M executable of the > program. I don't know if that would run on an RSX-11M+ OS, > but it seems like maybe it would. It might require > byte-hacking the tape drive unit addresses. > > Let me know if you want to try this. I have placed a zip > file named magtape.zip on my server at: > > http://pico-systems.com/codes/magtape.zip > > Let me know if you have any problems with this. > > Jon > > > Jon > >
