Fujitsu F2MC-8FX Hardware Manual page 576

APPENDIX C Instruction Overview
C.1 Addressing
2
F MC-8FX has the following ten types of addressings:
• Direct addressing
• Extended addressing
• Bit direct addressing
• Index addressing
• Pointer addressing
• General-purpose register addressing
• Immediate addressing
• Vector addressing
• Relative addressing
• Inherent addressing
Explanation of Addressing
Direct addressing
This is used when accessing the direct area of "0000
instruction table. In this addressing, when the operand address is "00
"0000 " to "007F
H
"0080 " to "047F
H
Extended addressing
This is used when the area of the entire 64 K bytes is accessed by addressing shown "ext" in the instruction
table. In this addressing, the first operand specifies one high rank byte of the address and the second operand
specifies one subordinate position byte of the address.
Figure C.1-2 shows an example.
562
". Moreover, when the operand address is "80
H
" by setting of direct bank pointer DP.Figure C.1-1 shows an example.
H
Figure C.1-1 Example of Direct Addressing
MOV 92H, A
DP 001
B
Figure C.1-2 Example of Extended Addressing
MOVW A, 1 2 3 4H
1 2 3 4
1 2 3 5
" to "047F
H
" to "FF
H
0 1 1 2 4 5 A
H H
5 6
H H
5 6 7 8
A
7 8
H H
" with addressing indicated "dir" in
H
" to "7F ", it is accessed into
H H
", the access can be mapped in
H
4 5
H
H