Memory Segment - Logical Address (pointers)
To address a byte in a segmented model, a program uses an address called a logical address
Logical addresses are often referred to as pointers.
- Segment-register is a segment selector that identifies the segment (Optional for some instructions that have a default)
- Byte-address is an offset that identifies a byte in the segment address space
- The following segment address identifies the byte at address FF79H in the segment pointed by the DS register
- The following segment address identifies an instruction address in the code segment. The CS register points to the code segment and the EIP register contains the address of the instruction.