Indirect Addressing

With indirect addressing, an instruction specifies a register pair which in turn holds an 8 bit value used for same page addressing (Section 2. 7.2). Suppose that registers 4 and 5 hold the 4-bit hexadecimal numbers 1 and B, respectively. Then the instruction:

Jump indirect to contents of register pair 4

This instruction would appear in memory as follows:

The 3 indicates a “jump indirect” instruction; the 5 indicates that the address indicated on this page is held in register pair 4. If register pair 4 had held the hex numbers 3 and C, a jump to location 0x23C would have occurred.