How to make an IBM 1311 disk drive move around the floor

Re:How to make an IBM 1311 disk drive move around the floor by rstuart4133 on Thursday March 17, 2022 @04:37AM (#30708885)

There is another story there about someone writing assembler program calculating 50000! for a DEC PDP-10. The PDP-10's registers are memory mapped to locations 0..15, so you could write a program that ran entirely from the registers. According to the story the registers (which were TTL) overheated and died.

I'm old enough to have programmed a PDP-10 when I was at Uni, and yeah once you grok'ed the architecture writing a program that ran in the registers is a challenge you set yourself. Mine computed primes using a sieve. It didn't kill anything.

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Re:How to make an IBM 1311 disk drive move around the floor by rootbear on Thursday March 17, 2022 @09:23AM (#30710880)

A person of my acquaintance owned a PDP-10 which he had in his apartment. Originally he had no memory for it and could only run programs from the registers and I remember thinking how strange that was.

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