Address Specification By Linear Addressing - Fujitsu MB90460 Series Hardware Manual

CHAPTER 3 CPU
3.4.1

Address Specification by Linear Addressing

The two types of address specification by linear addressing are specification of a 24-bit
address directly in the operand and specification of the lower 24 bits of a 32-bit general-
purpose register.
■ Linear Addressing by 24-bit Operand Specification
Figure 3.4-2 Example of Direct Specification of a 24-bit Physical Address in Linear Addressing
JMPP 123456H
Old program
counter + program
New program
counter + program
■ Addressing by Indirect Specification with a 32-bit
Figure 3.4-3 Example of Indirect Specification with a 32-bit General-purpose Register
RL1: 32-bit (long-word) general-purpose register
34
17 452D
12 3456
in Linear Addressing
MOV A,@RL1+7
Old AL XXXX
New AL
003A
(Upper 8 bits are ignored)
17452D
H
123456
H
090700
H
+7
RL1
JMPP 123456H
Next instruction
3A
H
240906F9
H