Running TSX-Plus under SIMH?

Just wondering if anyone has tried to run TSX-Plus under SIMH? Thanks to another list member, I was able to obtain a copy of the version 6.50 distribution (on "simulated floppy"). It took me all afternoon to re-learn how to use EDIT (which *really* makes you appreciate modern full-screen editors!) and modify TSGEN.MAC. I set it up to match the existing settings of my DLV11/16D card (whichappears as two DLV11's). TSGEN assembles without errors. There are some linker errors though, but the manual says at least some of them are to be expected. I copied the new TSX files and RT11SJ 4.0 over to the simulated RL02 and boot from it. RT-11 boots normally. But when attempting to execute TSX.SAV, SIMH gives an error and halts... I can't see anything wrong with the system generation but it's a lot of work to create a pack with VTServer for the new hardware if it's got a bug. I'm wondering if SIMH can't handle the time-sharing stuff or lack of a simulated DHV11 card. Any thoughts? thanks Charles