在网上找到了如下说明：
1. The object must be allocated into its own section using the #pragma idata or #pragma udata directive.
#pragma udata buffer_scn
static char buffer[0x180];
#pragma udata
2. Accesses to the object must be done via a pointer.
char * buf_ptr = &buffer[0];
...
// examples of use
buf_ptr[5] = 10;
if (buf_ptr[275] > 127)
...
3. A new region that spans multiple banks must be created in the linker script.
Linker script before modification:
DATABANK NAME=gpr2 START=0x200 END=0x2FF
DATABANK NAME=gpr3 START=0x300 END=0x3FF
Linker script after modification:
DATABANK NAME=big START=0x200 END=0x37F PROTECTED
DATABANK NAME=gpr3 START=0x380 END=0x3FF
4. The object's section (created in Step #1) must be assigned into the new region (created in Step #3). Add a SECTION directive to the linker script.
SECTION NAME=buffer_scn RAM=big
但是这个好像针对的C18编译器 |
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