24
Table 2.2
Effective Address Calculation (cont)
No.
Addressing Mode and
Instruction Format
Effective Address
Calculation Method
Effective Address (EA)
5
Absolute address
@aa:8
@aa:16
op
8 7
0
15
0
15
abs
H'FF
8 7
0
15
0
15
abs
op
6
op
0
15
IMM
#xx:16
op
8 7
0
15
IMM
Immediate
#xx:8
Operand is 1- or 2-byte
immediate data
7
op
disp
7
0
15
Program-counter relative
@(d:8, PC)
PC contents
0
15
0
15
8
Sign
extension
disp