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DSP/BIOS memory segments

DSP_KungFu_Master
Intellectual 705 points


Hello,

 

I have a question regarding the definitions of memory segments in DSP/BIOS located in TCF file.

Default settings for EVM5505 bios configuration file are the following:

DARAM base: 0x000060 length: 0x7f20

SARAM base: 0x008000 length: 0x20000

 

But in the c5505 system users guide the following values are given for DSP memory map:

DARAM base: 0x0000c0 length 0xFF40

SARAM base: 0x010000 length 0x40000

 

Why are the values in DSP config file so different? The code executes fine but I was wondering why are the numbers so lower than in the datasheed (SARAM and DARAM are defined as half of their size?)

 

Cheers,

  • 0
    Expert 2635 points

    Hi,

    Values in the tcf file ae word addresses and the values mentioned in the user guide are byte addresses. Both are refering to the same address range DARAM0-DARAM7 and SARAM0-SARAM31, but in different adrress format.

    byte address = word address << 1;

    Pratap.