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From:	"Charles Sandmann" <cwsdpmi AT earthlink DOT net>
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Subject:	Re: DJGPP termios
Date:	Mon, 9 Feb 2009 20:15:37 -0600
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> Also, why would it work in Vista and not in pure DOS??

It depends on the crash.  One of the features of running under pure
DOS with CWSDPMI as the DPMI provider is null pointer protection.
The entire first 4096 bytes is protected from read/write access to
catch bugs (bad pointers).  Run under DOS and look at the line
which is causing the crash.  You can test to see if this is cause by
disabling null pointer protection in DOS:  before you run the test
program enter:  cwsdpmi -x
For the next program (and only one program) the null pointer
protection will be disabled.  If the application then runs under DOS,
it's a program bug that should be fixed. 

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