z80189 ZiLOG Semiconductor, z80189 Datasheet - Page 197

• Manufacturer Part Number: z80189
• Description: Z80180, Z8s180, Z8l180 Mpu Operation
• Manufacturer: ZiLOG Semiconductor

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UM005003-0703
Z8018x
Family MPU User Manual
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
Figure 77.
Extended (EXT)
The memory operand address is specified by two bytes contained in the
instruction, as depicted in Figure 78.
Figure 78.
displacement (d)
m
Op Code 1
Op Code 2
Op Code
IX or IY
m
n
Indexed Addressing
Extended Addressing
n
Operand
Operand
Memory
Memory