Quote:
Originally Posted by Quoth
Ability to run DOS in Windows (only ever worked on 16bit & 32 bit Windows).
Ability to run 16 bit Windows on NT.
Many older 32 bit windows programs on 64 bit Windows.
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Perhaps since DOS was 16 bit and Windows on Windows only supports 1 generation back (i.e. 32 bit supports 16 bit, 64 bit supports 32 bit), there might be a reason that DOS did not run on 64 bit Windows.
Running 16 bit Windows on NT? Which version of NT 3? 3.5x? 4? Windows 2000?
As for the 32 bit Windows programs that did not run on 64 bit Windows, WoW is fussier than Windows on programs following the rules especially when the programmer tries to get down and dirty with the hardware. Quite a few of Microsoft's own programs had to have rewrites to produce a 32 bit version that ran on 64 bit Windows.