1. RE: Any Ideas what might be wrong here?
Al:
XP is based on NT OS. Older windows OS's were built on Top of DOS.
XP maybe over writing 0x400 memory area or make that area unaccessable
due to security .If you want to uses the com ports you will probably
need to go throught calls to the OS.
Bernie
2. RE: Any Ideas what might be wrong here?
- Posted by dm31 at uow.edu.au
Sep 05, 2003
>Bernie Ryan wrote:
>>
>> Al:
>> XP is based on NT OS. Older windows OS's were built on
Top of DOS.
>> XP maybe over writing 0x400 memory area or make that
area unaccessable
>> due to security .If you want to uses the com ports you
will probably
>> need to go throught calls to the OS.
>> Bernie
>
>Thanks Bernie.
>It appears to work in .ex format though...
>Any ideas?
>
>Take care for now,
>Al
I think that by using ex(run by windows in its own little dos
emulation memory section) windows lets the program believe
that it is accessing those memory address, but shunts it
though the windows system. When you use exw, Windows runs the
program normally, and hence doesn't try tricking it by
pretending it is a dos system.
... if that makes any sense to you
3. RE: Any Ideas what might be wrong here?
AL:
I don't run XP.
If you are running a DOS program security is probably not in effect.
Try making a simple exw windows program that JUST PEEKS at the 0x400
address and see if it fails, that will tell you if it is because of
the XP OS in the windows mode.
Bernie
