3.4.3 HC08 Storage Class Language Extensions

3.4.3.1 data

The data storage class declares a variable that resides in the first 256 bytes of memory (the direct page). The HC08 is most efficient at accessing variables (especially pointers) stored here.

3.4.3.2 xdata

The xdata storage class declares a variable that can reside anywhere in memory. This is the default if no storage class is specified.