I'm trying a 32-bit dll to access to addresses of physical memory under 32-bit Windows. This 32-bit dll is essential for my Labview project. I'm working about DSP, fft analyzer, and I must use Labview 6.1 to execute the visualisation's algorithm reading data to visualize from shared memory (DPRMAM). In my Labview diagram I use "call library function" but I need a function to read from address of physical memory. I have this problem because I'm using Windows 95 (32-bit) while the previous OS was Windows 3.1 (16-bit).

Now I have a 16_bit dll but I need a 32-bit dll.

Thanks.
[email protected]

 

Monique,

Try using Windows API functions to access memory. There is one to copy memory called CopyMemory in the Windows kernel32.dll.

Curt

 

You won't be able to do it with without writing or using a device driver.

One library/driver I've used before to access IO Ports (and can access physical memory) is available at http://www.entechtaiwan.com/tools.htm, but
you'll have to pay for it. No, I don't know of any free ways to do this save writing your own device driver, and that's non trivial and will take you much longer.

Alex Pavloff -- [email protected]
Eason Technology --- www.eason.com
--- Linux-based industrial HMI ---
-------- www.eason.com/5k --------

 

Moin Monique,
moin Curt.
moin all,

don't think CopyMemory in the Windows kernel32.dll will help you.

If you want use the linear address you can use
LoadLibrary("WOW32.DLL");
and ask for
GetProcAddress(hLibModule,"WOWGetVDMPointerFix");
and some others. Check the Visual C++ help.

If you use the physical address it depends on the Windows flavour - DPMI,
VxD or device driver.

I hope your DP-RAM is in the first 1 MB. I have used the WOW32.DLL to access
memory in that range.

Good luck

regards
Friedrich Haase