4524 Datasheet, PDF (100/161 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4524 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
OP2A (Output port P2 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
1000100010
222
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (P2) ← (A)
Grouping: Input/Output operation
Description: Outputs the contents of register A to port
P2.
OP3A (Output port P3 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
1 0 0 0 1 0 0 0 1 1 ₂ 2 2 3 ₁₆
1
1
–
Skip condition
–
Operation: (P3) ← (A)
Grouping: Input/Output operation
Description: Outputs the contents of register A to port
P3.
OP4A (Output port P4 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
1
0
0
0
1
0
0
1
0
0
2
2
2
4 ₁₆
1
1
–
Skip condition
–
Operation: (P4) ← (A)
Grouping: Input/Output operation
Description: Outputs the contents of register A to port
P4.
OR (logical OR between accumulator and memory)
Instruction
code
D9
D0
Number of Number of Flag CY
0
0
0
0
0
1
1
0
0
1
0
2
1
9 ₁₆
words
1
cycles
1
–
Skip condition
–
Operation: (A) ← (A) OR (M(DP))
Grouping: Arithmetic operation
Description: Takes the OR operation between the con-
tents of register A and the contents of
M(DP), and stores the result in register A.
Rev.2.00 Jul 27, 2004 page 100 of 159
REJ03B0091-0200Z