Rev. 1.0, 02/00, page 52 of 1141
No.
Addressing Mode and
Instruction Format
Effective Address
Calculation
Effective Address (EA)
5
Absolute address
@aa:8
@aa:16
@aa:32
31
0
8 7
@aa:24
31
0
16 15
31
0
31
0
op
abs
op
abs
abs
op
op
abs
H'FFFF
24 23
Don’t
care
Don’t
care
Don’t
care
Don’t
care
24 23
24 23
24 23
Sign
exten-
sion
6
Immediate #xx:8/#xx:16/#xx:32
op
IMM
Operand is immediate data
7
Program-counter relative
@(d:8, PC)/@(d:16, PC)
0
0
23
23
disp
31
0
24 23
op
disp
PC contents
Don’t
care
Sign
exten-
sion