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Yes, same architect (Dave Cutler), and WNT is (V+1)(M+1)(S+1) though they probably didn't do that on purpose.

> though they probably didn't do that on purpose.

Of course they didn’t (wink wink)

> This continued, of course, in its spiritual successor Windows NT.

I think NT still had problems with interactivity when the parralel port was used (interrupts)

I can't say I did much w/ NT and parallel ports beyond attaching printers. I'd imagine it could be pretty awful in the "SPP" days, especially with people trying to connect ZIP drives, "Backpack" CD-ROM drives, tape drives, etc. I suspect floppy drives, which I also didn't use under NT very much, could also play hell w/ interactivity.

For those curious, look up IO completion ports. Back when all I knew was select(2), it blew my mind.