MPC5744P DMA bus error to get data from source

[edwardlu666]

Hello:

Now I debug the DMA module of MPC5744P.BUT BUS ...

DMA reading occurs the bus error.And FAE from Shanghai-Office tells me it would not be the permitted to access the bus for DMA.  (Why source bus error?)

here is my debug sight from LAUTERBACH

All AIPS opened for no-supervisor mode:

Could any one help me?

thanks 

[edwardlu666]

question resolved by setting AIPS and SMPU register to make the ram accessable.the code should be in start up,but in my project,transform the code in the later stage... not reasonable but can work

thanks all 

[edwardlu666]

Buffer is located in the RAM so does this matters?or can some of the register to be set to correct the error?