FUJITSU F2MC-8L F202RA - Manual (Page 399)

383
B.1 Addressing
For the F
2
MC-8L, the following 10 kinds of addressing modes are supported:
• Direct addressing
• Extended addressing
• Bit direct addressing
• Index addressing
• Pointer addressing
• General-purpose register addressing
• Immediate addressing
• Vector addressing
• Relative addressing
• Inherent addressing
■ Explanation on Addressing
●
Direct addressing
The addressing, which is indicated by dir in the instructions list, is used for accessing the area from 0000
H
to 00FF
H
. In this addressing, the higher one byte of the address is 00
H
. Specify the lower one byte with the
operand.
Figure B.1-1 shows an example.
Figure B.1-1 Example of Direct Addressing
● Extended Addressing
The addressing, which is indicated by ext in the instructions list, is used for accessing the entire area of 64
KB. In this addressing, specify the higher one byte of the address with the first operand and the lower one
byte with the second operand.
Figure B.1-2 shows an example.
Figure B.1-2 Example of Extended Addressing
MOV 12H, A
4 5 H 4 5 H A 001 2 H
MOVW A, 1 2 3 4 H
1 2 3 4 H
1 2 3 5 H
5 6 H
7 8 H
A 5 6 7 8 H