About Ram.ini

Dear Sirs,

   I am using the ARM-Cortex M0 and  want to run the debug mode in keil.

I refer the ram.ini in example file as below,

And according to my M0 to modify the ram.ini as below,

I don't have idea how to set vector table offset for M0.

As I know the vector table for M0 from address 0x04 (reset handler),right?

My questions are,

1.Should I set vector table offset for M0?

2. Does any document describes the ram.ini?

3. What do the _WDWORD and_RDWORD  mean?   ( Write DWORD , Read DWORD? )

    What does the value  0xE000ED08 and 0x20000000 mean ?

    (I have checked the document for STMF103.

    the address 0x20000000 is belong to SRAM bit-band region,

    the address 0xE000ED08 is belong to Private peripheral bus)

Thanks for your help.

BR,

Eddie