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To: Tenchusatsu who wrote (105613)7/13/2000 3:16:04 PM
From: Rob Young  Respond to of 186894
 
Tench,

<It should not be very hard to convert an IA-32 OS to IA-64, since there are many more similarities than differences.
On the other hand, this is Microsoft we're talking about, and they're notorious for turning a simple task into a
complicated one, all in the name of feature creep.>

"Not veru hard to convert [32-bit] OS to [64-bit] OS"

Quite tricky actually. Case in point... took Sun over
2 years to get Solaris to fully 64-bit. Perhaps some
embarassment on their part. But obviously rock-solid
testing has to occur to ship. Biggest issue? Design
or engineering (duh) at the outset. Where are your
structures "bitness" setup , how persuasive and insidious?

Another case study from my favorite OS. VMS engineering
had 2 years on their roadmap to get VMS fully 64 bit.
They made it in 1 year.

There are well engineered OSes and then there are
outstanding OSes out there.

Win64 with NT as a starting point? Massively rushed
deadlines and engineering soundness often clash, so
NT was *somewhat* of a hack job at the start. But we
also see Service Pack 4 has made NT very usable indeed.

In all fairness, Microsoft's challenges are much larger
than VMS engineering's. Multi-million line applications
that must function well is probably a pain :-).
Exchange for one ;-). I'm assuming they are trying to
get some applications over there. Another big assumption
is that they will be rock solid at shipping if they
want to be an Enterprise OS. Not appealing to run
mission critical stuff (massive DB on large memory
system) have it crash and have the drone on the other
end ask sheepishly:

"Have you applied the Win64 Service Pack 1 yet?"

So we shouldn't be too surprised if Win64 slips slips
slips . . .

Rob