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Immediate (immed), Relative (rel) – Zilog Z80180 User Manual

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Z8018x

Family MPU User Manual

UM005003-0703

183

Immediate (IMMED)

The memory operands are contained within one or two bytes of the
instruction, as depicted in Figure 79.

Figure 79. Immediate Addressing

Relative (REL)

Relative addressing mode is only used by the conditional and unconditional
branch instructions (refer to Figure 80). The branch displacement (relative to
the contents of the program counter) is contained in the instruction.

Figure 80. Relative Addressing

Op Code

n

m

m

16-bit

operand

Op Code

8-bit

operand

Op Code

displacement (d)

Program Counter (PC)

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