PC> One thing worth noting is that KbdCharIn() is not window compatible.

If by this you mean it can't be used in a VIO window on the desktop --
it can.  Have several programs, both 16-bit and 32-bit, that do so.
Give it a try.

 PC>What do you use to read the keyboard for a Vio program?  getch()???

That'll work, too (calls KbdCharIn() under the covers in the runttime),
and is probably a better idea for all but the smallest of utilities as
it's more portable.

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