Hitachi H8/3664 Hardware Manual page 53

Addressing Mode and
No. Instruction Format
5 Absolute address
@aa:8
@aa:8
op abs
@aa:16
op
@aa:24
op
abs
6 Immediate
#xx:8, #xx:16, or #xx:32
op
7 Program-counter relative
@(d:8, PC) or @(d:16, PC)
op
Effective Address
Calculation
abs
IMM
disp
0
23
PC contents
Sign
exten- disp
sion
Effective Address
23 8 7
H'FFFF
23 16 15
Sign
exten-
sion
23
Operand is immediate
data
23
0
0
0
0
37