5.6 __extended_load_program_memory Intrinsic Function

The IAR __extended_load_program_memory intrinsic function returns one byte from program memory.

Suggested Replacement

There is no equivalent MPLAB XC8 built-in function, but standard C code using an MPLAB XC8 qualifier can perform a similar task.

Cast the address to a const __memx unsigned char * type and dereference it in the usual way.

None

Consider migrating IAR code such as:

volatile char x;
void foo(void) {
    x = __extended_load_program_memory(0x10000);
}

to MPLAB XC8 code similar to:

#include <xc.h>
 
volatile char x;
void foo(void) {
    x = *((const __memx char *)0x10000);
}

See the Special Type Qualifiers section in the MPLAB XC8 C Compiler User's Guide for AVR MCUs for more information on this qualifier.