That's pretty badass. It would be a pain to try to work with now given much of it is strange to a modern user or admin. Cool that they built it. My takeaway from Burrough's is to do much interface protection at compile time, pointers + code protection in memory during runtime, bounds-checking on arrays, simplified assembler, dedicated I/O processor/programs, and good recovery of failed components. That plus what we know from other systems would make for quite a resilient system combined with a RISC processor such as Gaisler's Leon SPARC I.P. or the Rocket RISC-V CPU.