Datasheet

Rev.6.00 Oct.28.2004 page 44 of 1016
REJ09B0138-0600H
2.7.2 Effective Address Calculation
Table 2-6 indicates how effective addresses are calculated in each addressing mode.
Table 2-6 Effective Address Calculation
Register indirect with post-increment or pre-decrement • Register indirect with post-increment @ERn+
No. Addressing Mode and Instruction Format
Effective Address Calculation
Effective Address (EA)
1 Register direct (Rn)
op rm rn
Operand is general register contents.
Register indirect (@ERn)2
Register indirect with displacement @(d:16, ERn) or @(d:32, ERn)
3
• Register indirect with pre-decrement @–ERn
4
General register contents General register contents
Sign extension
disp
General register contents
1, 2, or 4
General register contents
1, 2, or 4
Byte Word Longword
1 2 4
Operand Size Value added
31 0 31 0 31 0 31 0 31 0
31 0 31 0 31 0 31 0
op
r r
op
op r
rop
disp
24 23
Don’t care
24 23
Don’t care
24 23
Don’t care
24 23
Don’t care