19 votes

Was the IBM 5100 ever used for codebreaking?

The 5100 had programmable microcode which could be used to implement crypto-specific opcodes1,2,3. Then there's the whole John Titor4,5 thing... 1 Such as population count 2 I'm unaware of anyone ...
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6 votes

Was the IBM 5100 ever used for codebreaking?

I think the original argument (both in the John Titor hoax and in Steins;Gate) goes like this: The IBM 5100 can emulate the IBM mainframe ISA (that's true, and that's how the APL running on the IBM ...
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