First off, my apologies to the pdp-8 aficionados on the list. While I used 8's back in the day there's a lot I don't know about them. I'd like to understand *exactly* what hardware tss/8 needs to run. My understanding is that it will only run on an 8/I with the following options KT08/I timesharing option MC8/I memory option KE8/I multiply divide option I'm curious because I wrote up a simple pdp-8 verilog description which runs FOCAL and I think it would be fun to run tss/8 also. I'd like some pointers to documents which describe the options needed and details about them. Certainly all of the IF/DF extended memory is needed, since last time I ran tss/8 we had 32k. I'm guessing that this is covered in the MC8/I documents. I'm curious if the KE8/I is the same as the EAE. And I've never seen a description the KT08, all though I can guess what it does (traps any 6xxx as well as halt and switch register access at a minimum, but anything else?) Also, if there is a better list for this sort of question please let me know. I've never read alt.pdp8.whoknowswhat but maybe I should. -brad