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Download the Toolchain from https://github.com/krater/rigol-toolchain

and follow the instructions in the README file...

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howto compile examples

links to blackfin prm

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Pitfalls

- Alignment Every command must be word aligned. When you access the memory, word accesses must be word aligned, long word accesses must be long word aligned. Don't use the .align directive !! It doesn't works with the toolchain.

- Subroutines / Calls Every subroutine that calls subroutines must start with LINK and end with UNLINK to save the return address to the stack. The blackfin CPU doesn't do that automatic.

Example:

sub:
  LINK 0x0

  ...
  CALL sub2
  ...

  UNLINK
  RTS