I've used that image quite a bit for testing my vhdl pdp11. So it should work.
>From a quick test, it appears as if the lpt device in the default simh config conflicts. If I disable that, mubas works fine for me. Like so: sim> set cpu 11/45 sim> set lpt disable sim> att rk0 rt11v4-mubasicv2.rk sim> boot rk0 RT-11FB (S) V04.00E .SET TT QUIET ?KMON-W-No date 00:00:00 ?KMON-F-Illegal device LP: .R MUBAS WARNING: DATE NOT SET MU BASIC-11/RT-11 V2.00R CONFIGURATION FILE : *1USER MU BASIC-11/RT-11 IS OPERATIONAL. PLEASE TYPE IN "HELLO". Cheers, Sytse On Thursday, March 29, 2018 06:46:34 PM Fritz Mueller via cctalk wrote: > Hello all, > > I would like to try and get MU-BASIC working on my PDP-11/45, under RT-11 > V4. The best bits I've been able to find to work with so far are the RK05 > image here: > > > http://bitsavers.trailing-edge.com/bits/DEC/pdp11/discimages/rk05/rt11v4-mu > basicv2.rk.gz > > ...but I've not had much success getting this to work under simh. Using the > 1USER.CNF configuration file in this image, no matter how I configure the > machine, I get either traps, halts, or stack violations when issuing the > first command in basic. > > Trying to rebuild MU-BASIC using the indirect files in the image results in > a linker barf on some undefined symbols. > > Has anybody else here had much luck getting MU-BASIC up and running under > RT-11 V4? Is there an alternate image or distribution kit somewhere that I > could try to work with? > > thanks much, > --FritzM.