16.3 Attributes

In addition to the code generation attributes detailed in 13.2.6, for C50 attributes are defined to specify the Single Access RAM and Double Access RAM memory banks. They are:

A_BMEM Allocate this state in the address range specified by the bMemMap target parameter.
A_UMEM Allocate this state in the address range specified by the uMemMap target parameter. The underlying bits are AB_BMEM, and AB_UMEM. Each attribute above turns one off and turns the other on (e.g. A_BMEM turns AB_BMEM on and AB_UMEM off). Also for C50 stars, portholes can assert attributes P_BMEM and P_UMEM, which work in exactly the same way as A_BMEM and A_UMEM. The default attribute for a C50 porthole is P_BMEM, which allocates the porthole buffer in DARAM memory. Specifying the P_UMEM attribute places the porthole buffer in SARAM memory.