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Propeller-2 set up a stack? — Parallax Forums

Propeller-2 set up a stack?

JonTitusJonTitus Posts: 193
in Propeller 2
How do I set up a stack for assembly-language subroutine calls in an assembly-language program? Perhaps each cog has its own stack at a defined address? The V33 docs are silent on this topic and mention "stack" only 6 times. Searches here and elsewhere didn't provide any guidance. Thank you. --Jon

Comments

  • Wuerfel_21Wuerfel_21 Posts: 5,235
    Each cog has a built-in stack that can hold 8(?) longs. This stack is not part of any other memory.

    Alternatively, you can use the memory pointed to by the PTRA or PTRB register as a call stack using the CALLA/CALLB and RETA/RETB instructions in place of the normal CALL/RET instructions.
  • JonTitusJonTitus Posts: 193
    Just like the Intel 8008 (circa 1973) with a few levels of built-in stack storage. Thanks for explaining the stack, Wuerful_21. I appreciate your help. --Jon
  • SuracSurac Posts: 176
    Internal stack size is 8.
    remember address and carry/zero flag is pushed/popped
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