in reply to YAC (Yet Another Challenge): Oldest Useful Computer Text

The reference manual for the Varian 72 (as in 1972) assembler. My job mainly consists of writting testing code written for that machine. I wasn't even born then!
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Re^2: YAC (Yet Another Challenge): Oldest Useful Computer Text
by wazoox (Prior) on Apr 17, 2006 at 15:29 UTC
    Just curious : what is this machine used for ?

      We us a hardware clone (see below) of said machine to control the nuclear reactors and the associated boilers and valves at the Bruce "A" and Bruce "B" Power Generating Stations. They are opperated by Bruce Power.

      Some parts have been replaced with more modern components. For example, the core memory has been replaced, but it still only has 32KW (64KB, 16 bit addressable) of RAM. We load binaries on the machine via a serial connection to a device pretending to be a paper tape reader to the Varian.

        I know that many live by If it's not broken, don't fix it... but this seems a little extreme. Anyone in your managment chain see this as a liability?

        --hsm

        "Never try to teach a pig to sing...it wastes your time and it annoys the pig."