Hitachi H8/3672 Series Hardware Manual page 54

Table 2-12 Effective Address Calculation (1)
Addressing Mode and Instruction Format
Register direct(Rn)
Register indirect(@ERn)
Register indirect with post-increment or
pre-decrement
•Register indirect with post-increment @ERn+
•Register indirect with pre-decrement @-ERn
Rev. 1.0, 03/01, page
Effective Address Calculation
Sign extension
The value to be added or subtracted is 1 when the
operand is byte size, 2 for word size, and 4 for
longword size.
30 280
of
General register contents
General register contents
General register contents
1, 2, or 4
General register contents
1, 2, or 4
Effective Address (EA)
Operand is general register contents.