Z80180 Datasheet, PDF (197/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z 8018x Fam ily
M PU Us e r M anual
182
Indexed (INDX)
The memory operand address is calculated using the contents of an Index
Register (IX or IY) and an 8-bit signed displacement specified in the
instruction. Refer to Figure 77
Op Code 1
Op Code 2
displacement (d)
IX or IY
Operand
Memory
Figure 77. Indexed Addressing
Extended (EXT)
The memory operand address is specified by two bytes contained in the
instruction, as depicted in Figure 78.
Op Code
n
m
m
n
Operand
Memory
Figure 78. Extended Addressing
UM005001-ZMP0400