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Unexplained Magic Words in Addressing in FIRA (FIR Accelerator sample program)

Category: Software
Product Number: ADSP-215xx, ADSP-SC5xx
Software Version: CCES 2.10

Hi, I found a puzzling magic word in the FIRA sample program.

The addressing is logically summed to 0xA000000.

It like this:

   FIRA_TCB1[0]=    ((int)(FIRA_TCB2+12)>>2)    | 0xA000000;    // CP  Chain Pointer Register

I could not find the meaning of this word in the datasheet or HRM.

What on earth could this be? The sample code can be found at

ADSP-SC58x/2158x FIR Accelerator: Example code

Thank you for your generosity.

Parents Reply
  • Hello.

    Thank you for your response. In the end, the result is that it is faster to run in software than in the accelerator. The accelerator clock is too slow for this processor, so it is not very practical. Still, I can do something with the core in parallel, so I need to find a way to use it that way.


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