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4 linear addressing, Linear addressing – FUJITSU F2MCTM-16LX User Manual

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CHAPTER 2 CPU

2.4

Linear Addressing

There are 2 types of linear addressing:
• 24-bit operand specification: Directly specifies a 24-bit address using operands.
• 32-bit register indirect specification: Indirectly specifies the 24 low-order bits of a 32-

bit general-purpose register value as the address.

24-bit Operand Specification

Figure 2.4-1 shows an example of 24-bit operand specification. Figure 2.4-2 shows an example of 32-bit

register indirect specification.

Figure 2.4-1 Example of Linear Method (24-bit operand specification)

Figure 2.4-2 Example of Linear Method (32-bit register indirect specification)

17

12

452D

3456

17452D

H

123456

H

JMPP 123456H

JMPP 123456H

Old program counter

+ Program bank

+ Program bank

New program counter

Next instruction

XXXX

RL1

3A

Old AL

New AL

MOV A, @RL1+7

240906F9

090700

H

003A

7

(The high-order 8 bits are ignored.)