Product data

HD404818 Series
73
The P instruction has no effect on the program counter.
AP
9
AP
8
AP
7
AP
6
AP
5
AP
4
AP
3
AP
2
AP
1
AP
0
W
1
W
0
X
3
X
2
X
1
X
0
Y
3
Y
2
Y
1
Y
0
W register X register Y register
RAM address
Register Indirect Addressing
AP
9
AP
8
AP
7
AP
6
AP
5
AP
4
AP
3
AP
2
AP
1
AP
0
RAM address
Direct Addressing
d
9
d
8
d
7
d
6
d
5
d
4
d
3
d
2
d
1
d
0
Instruction 2nd word
Opcode
Instruction 1st word
AP
9
AP
8
AP
7
AP AP
5
AP
4
AP
3
AP
2
AP
1
AP
0
RAM address
Memory Register Addressing
m
3
m
2
m
1
m
0
Opcode
Instruction
000100
6
Figure 39 RAM Addressing Modes