How can I mux an AvalonMM Bus (VIP_VFR -> 2x SDRAM)

I got it now working, but I could not explain to myself, why it only works like this.

The problem was in the initialisation of my FrameWriter. As it is written in the VIP Suite Guide A-25 where the Control Register Map of the FrameReader can be found, the Frame 0 Base Address schould be given as 32-bit base address. So here we don't have the Byte Addressing. I tried to pass "00001000000000000000000000000000" as data to the FrameReader, but this does not work. When I now tried to pass over the value as hexadecimal, it works.

Don't work:

writedata <= "00001000000000000000000000000000";

Works:

writedata <= x"08000000";

(where writedate is out std_logic_vector(31 downto 0))

I don't get it, in my opinion this is the same? x"08000000" = 134217728 = 2^27 = "00001000000000000000000000000000" I calculated it on paper again.

Thanks for your help Kevin!