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How can I write data to PC memory on PCI master mode ?

Hello everybody

 

I wants to exchange data between DSP and PC through the PCI bus. So I use the PCI master mode. And set the PCIADDSUB[0] to physical address that is PC physical address but I can’t see any data on 0x4000 0000 address with CCS. What is problems?

 

PC physical address: 0x60f7000

 

PCIADDSUB[0]; 0x60f7000 & 0xFF800000

 

Check memory: 0x40000000 +(0x60f7000 & ~0xFF800000)

 

I don’t know why . Does anyone know the reason?  Please help me.

 

 

Thank you

 

dhkim