hi! i'm trying to implement asm function 7305h of interrupt 21h in my C++
program, and I just can't do it. first problem is that I have to use
structure:

DISKIO  STRUC
    diStartSector   dd  ?   ;sector number to start
    diSectors       dw  ?   ;number of sectors
    diBuffer        dd  ?   ;address of buffer
DISKIO  ENDS

and inline asm doesn't support STRUC. and I don't know how to do this using
C++ struct.

any help appreciated!

First of all: Are you sure you can use that interrupt function with your
OS?

The inline assembler doesn't allow you to define variables or data
structures. It does generally know how to access simple variables and
structures defined in C/C++.

Your bigger problem is that VC/C++ only generates 32 bit code segments.
Neither 9x nor NT will permit a 16 bit interrupt to take place in a 32 bit
code segment. 16 bit ISRs put the address of the return instruction into IP
and 32 bit ISRs set EIP. That's a quick trip to hyperspace.

You can either find a 16 bit compiler - I think that Borland still makes
on - to generate a 16 bit segment to run on 9x or in NT's compatibility mode
though NT is a bit 'picky' about letting you get close to the hardware.

You should take a step back, describe what you want to do and not how to do
it and someone here may propose a modern approach.

Regards.
Will

you're right. well, i'll just post another question, with my real,initial
problem.

thanks

yes- win95/98

actually, nope. sorry