Far pointer
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In a segmented architecture computer, a far pointer is a pointer to memory in a specific context, such as a segment selector making it possible to point to addresses outside of the default segment. Comparison and arithmetic on far pointers is problematic: there can be several different segment-offset address pairs pointing to one physical address.
In a segmented architecture computer, a far pointer is a pointer to memory in a specific context, such as a segment selector making it possible to point to addresses outside of the default segment. Comparison and arithmetic on far pointers is problematic: there can be several different segment-offset address pairs pointing to one physical address. include int main() { char far *p = (char far *)0x55550005; char far *q = (char far *)0x53332225; *p = 80; (*p)++; printf("%d", *q); return 0; } Output of the following program: 81; Because both addresses point to same location. Physical Address = (value of segment register) × 0x10 + (value of offset). Location pointed to by pointer is : 0x5555 × 0x10 + 0x0005 = 0x55555 Location pointed to by pointer is : 0x5333 × 0x10 + 0x2225 = 0x55555 So, and both point to the same location 0x55555. ==Notes== ==References==
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