From:	"L. Lu" <inf28484 AT studserv DOT uni-stuttgart DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: When is a DOS app a "32-bit DOS" app?
Date:	Sun, 8 Oct 2000 21:31:02 +0200
Organization:	Comp.Center (RUS), U of Stuttgart, FRG
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I am not sure but ...

when a program in real-mode involves any 32-bit instructions (i.e. prefixed
by 66H/67H), then it is a 16/32-bit mixed program; if it has only 32-bit
instructions (i.e. all prefixed by 66H/67H), it is a 32-bit program.
but when the program runs in protected mode, it can be 32-bit, 16-bit or
16/32-bit mixed, depended on its segments and operand/address size prefixes.

It may be wrong ... Ask other experts please.

Lu

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