Thanks Mattis. The system in question has 32kw of memory and it does pass the memory test.
I have not tried to boot the resulting DD image on SIMH but the original RK image does boot. I feel I'm close but I'm missing something. I may try 5.3 instead. Rich Sent from my iPhone > On Mar 10, 2016, at 2:15 PM, Mattis Lind <[email protected]> wrote: > > 2016-03-10 18:51 GMT+01:00 Richard Cini <[email protected]>: > >> Is there a listing somewhere of what versions of RT-11 work with which >> CPUs? The Heath H11 uses the LSI-11 which I think is an 11/03 equivalent. >> Is there a specific version (or maximum version) designed for this CPU? > > I have been using RT11 v5.3 on a LSI-11/2 (KD11-HA / M7270) machine with > RX02 and 64kByte memory. I also tried RT11 V3B / MU-BASIC on this machine > booting from RX02. > > http://www.datormuseum.se/computers/digital-equipment-corporation/pdp1103-l > > Long ago I ran RT11 V4 on a VT103 with LSI11/2 CPU and dual TU58. It was > really very slow. I have the distribution kit somewhere on original TU58 > but I am not sure about the state of those cassettes. > > > So I am pretty convinced that the it should work. What about SimH or > Ersatz-11? Does your image boot on those simulators if you set the up > identical to your setup? I know that SimH had problems booting from TU58 > but as far as I remember that should have been fixed. Try the latest SimH > on Github. > > Do you have enough working memory in your system? Have you ran diagnostics? > Maybe it is a good idea to create a bootable TU58 with XXDP. If you use > SimH you can create your own bootable TU58 without to much effort. I did > this when working on my 11/04. Use one of the RL02 images on bitsavers and > try to follow the guide I have a bit down on this page: > http://www.datormuseum.se/computers/digital-equipment-corporation/pdp-11-04 > > >> I tried v4 using a method I found on-line (modifying with SIMH to make it >> bootable as a TU58 image rather than an RK) but it doesn't work so I wanted >> to first eliminate the system version as the potential problem. >> >> Thanks! >> >> Rich >> >> Sent from my iPhone > > > Good luck! > > /Mattis
