Tobias-
> I am using the TI EVM board with a C6201 DSP under
Linux. For a
> student research project I am programming a COFF loader for this
> board. Communicating with the hardware is done by directly accessing
> the Base Address Registers of the PCI interface, where code can be
> loaded via HPI.
> This works fine except for the SBSRAM. When I write some words to
> consecutive addresses in this address space and try to read these
> words out after it, I always get the last word I wrote in. So i.e. if
> I write 1, 2, 3, 4, the word which is read out for each of the
> addresses is always 4.
This is probably "bus hold"; i.e. last value is hanging on the bus due to
buffers
along the way. It sounds to me like you're not reaching SBSRAM mem at
all.
> Other address spaces are read correctly and I
> think the EMIF registers are also initialized right.
Those are some big assumptions. I would first verify you have SBSRAM
configured
correctly by using CCS + JTAG to download a small, simple DSP program that
read/writes SBSRAM mem. Once you know that's good, then go back to PCI
interface.
-Jeff