now you got me thinking, Zane.
I have FIS in my 11/44, and I am not sure I have CIS either installed
in the /44, or the module is somewhere, or I passed on it for the same
reason I did not install the CIS chip in the QBUS-based 11.
My 11/35 OTOH does have FIS and CIS (and MMU plus SLR), but
Surely you mean EIS and FIS here. AFAIK CIS was never available for the 11/35
Qlso be warned that FIS (Floating point Instruction Set) is not the same
as the FPU, it's not even software compatible with it.
And I sometimes whish I had the CIS option in my 11/44. I don't like
empty slots :-). IIRC it's 2 boards, a hex and a quad .
-tony