Any own an 11/725...?

Tony Duell ard at
Sun Oct 23 23:00:57 CDT 2005

> > The 11/730, of course, is mostly PALs (as I said) with some RAM as a 
> > control store, 8 off 2901s as the ALU, and an 8085 (I think) to load the 
> > control store, etc. One day I am going to look into modifying the 
> > microcode of that machine...
> To what end?  Increased performance?

NO, just for fun... I doubt very much I could improve on the performance 
for running the VAX instruction set. I have not looked at the prints 
carefully enough to determine how much of the instruction set is 
hard-wired (if any), I wonder if it would be possible to run a different 
instruction set entirely.


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