Reply to post: Re: Degrees of Obsolescence

US nuke arsenal runs on 1970s IBM 'puter waving 8-inch floppies

CrazyOldCatMan Silver badge

Re: Degrees of Obsolescence

> 56-year-old IBM mainframe, as opposed to its 8-year-old descendant is also... unwise

Why? As long as you can get parts, people to fix it and people to code[1] for it then I don't see a problem..

[1] Even me (in a pinch) - many, many years ago I was a TPF[2] programmer on IBM mainframes. I probably still have a POPS manual somewhere at home..

[2] Which, at that time, only supported assembler. Which is why we were paid (relatively) well. Required a *lot* of effort to make sure stuff worked. And we also had a QA department with real teeth. When a catastrophic core-dump can take the mainframe down and cost you roughly $6m per hour (in early 90's money) you tend to be a bit careful about what you load..

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