PL> The spiral death syndrome was documented some time ago, and
PL> is fixed with a new ROM from USR US (as it's the US version).

HM> Which is a bit strange, since wasn't it a heat related problem?

That not too implausible. Its could be it just assumed a
particular performance detail that varied with temp, and
it didnt have to, it could allow for it varying instead.

HM> I can smell a kludge a mile off :-)

Not necessarily. The whole point of a pure software DSP modem is
that you have a hell of a lot of control over almost everything,
so you can also do stuff like allow for warmup effects in code too.

Some of the hard drives do that sort of thing on recalibrates,
explicitly allow for warmup effects. Some recalibrate
at a higher rate initially while it warms up etc.
@EOT:

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