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Effective Address Calculation
Table 1-11 explains how the effective address is calculated in each addressing mode.
Table 1-11. Effective Address Calculation (1)
No. Addressing mode, instruction format Effective address calculation Effective address
1
Register direct Rn
15
8 7
4 3
OP
reg m reg n
2
Register indirect @Rn
15
7 6
4 3
OP
reg
28
None
0
15
16-bit register contents
0
3
0
3
reg n
reg m
Operand are contained in
registers m and n
0
15
Operand is at address
indicated by register
0
0
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