Booting an IBM MP 3000 S/390 System

[Mouse]

> I should think that a set of manually entered bootstrap instructions
> (i.e., not on a diode ROM board) would take considerably longer than
> 5s.  ;)

I feel fairly sure you overestimate either the length of the bootstrap
or the per-word time required.

I once used an HP machine with a front-panel-buttons bootstrap.  It was
only some four or five words long, and after entering it a few dozen
times I feel reasonably sure I could enter it from muscle memory in
well under a second per.  (Weasel words are because this was in the
late '70s and the memory is now rather fuzzy.)

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