[InABunkerUnderSF]

But did you write Compass? One of my last goberment contractor jobs in about 1981 was writing a Z-80 simulator in Compass on a CDC Cyber 7000. I was finally able to convince them that they could buy 10 Z-80 machines for the cost of writing a simulator.

Then I was fired. I was young but I learned fast and never made that mistake again. :o)

[Gideon7]

But did you write Compass?

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Oh yeah. CDC assembly language was weird stuff. The arithmetic had +0 and -0 as two different values due one’s complement integer representation. The 60 bit floating point format was weird too.

I later moved up to programming Cray supercomputers in CFT (Cray Fortran) and assembly. Seymour Cray had learned his lesson from his designing the Cybers, so his Crays had a 64 bit words, 8 bit ASCII, and IEEE 754 arithmetic.

Much nicer :-)