Cyclone IV GX PCIe core on Windows 7

[Altera_Forum]

We have PCIe core connected with DMA core under Qsys with Cyclone IV GX. PCIe transmission is supervised by our application running under Windows.  

When trying to send some bits via PCIe, transmission starts and takes place, however for Windows XP there is correct data received in PC memory whilst for Windows 7, both 32-bit and 64-bit the data is not written. No other differences observed, excpet data loss. Have you had any similar problem?

[Altera_Forum]

--- Quote Start ---  We have PCIe core connected with DMA core under Qsys with Cyclone IV GX. PCIe transmission is supervised by our application running under Windows.  When trying to send some bits via PCIe, transmission starts and takes place, however for Windows XP there is correct data received in PC memory whilst for Windows 7, both 32-bit and 64-bit the data is not written. No other differences observed, excpet data loss. Have you had any similar problem?  --- Quote End ---    Hi,  i am just wondering. Is it the same machine with different OS? Have you checked the address compatibility?  Arco