Re: Real mode int from protected mode and back

f000:7250 is inside bios... 000f:7250 is not... right?
Well, if im wrong, then... Interesting... maybe some bios int call
from c file routines...?
DOS c++.. I mean Im compiling the ISR using the old MS-DOS c++ 16 bit
compiler... I really don´t know how to explain it better...

I think my biggest problem here is not understand the whole concept of
DPMI. The first idea was just to make a int call to my ISR, a pure int
call using the registers as parameters... I think it would work ok if
i didnt need to make file manipulations inside my ISR, am i right? The
file routines were not written to protected mode so wouldnt be
compatible...
Well, the workaround was to make the call using DPMI int, what im
doing now. But i dont understand the parameters needed for int 31h
300h... That pointer to a registers structure... Can it be null? Can
I use the stack to pass the parameters to the ISR?
Thanks again...

.

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