4507 Datasheet, PDF (68/115 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4507 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
OP1A (Output port P1 from Accumulator)
Instruction
code
D9
D0
Number of Number of Flag CY
words
cycles
1 0 0 0 1 0 0 0 0 1 ₂ 2 2 1 ₁₆
1
1
–
Skip condition
–
Operation: (P1) ← (A)
Grouping: Input/Output operation
Description: Outputs the contents of register A to port
P1.
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: (P21, P20) ← (A1, A0)
Grouping: Input/Output operation
Description: Outputs the contents of the low-order 2 bits
(A1, A0) 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: (P31, P30) ← (A1, A0)
Grouping: Input/Output operation
Description: Outputs the contents of the low-order 2 bits
(A1, A0) of register A to port P3.
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.3.01 2005.02.04 page 68 of 111
REJ03B0107-0301