Z8018x Family
MPU User Manual
180
Addressing Modes
The Z80180 instruction set includes eight addressing modes.
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Implied Register
Register Direct
Register Indirect
Indexed
Extended
Immediate
Relative
IO
Implied Register (IMP)
Certain Op Codes automatically imply register usage, such as the
arithmetic operations that inherently reference the Accumulator, Index
Registers, Stack Pointer, and General Purpose Registers.
Register Direct (REG)
Many Op Codes contain bit fields specifying registers used for operation.
The exact bit field definitions vary depending on instruction depicted in
Figure 75.
UM005001-ZMP0400
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