4501_M Datasheet, PDF (83/212 Pages) Renesas Technology Corp – 4-BIT CISC SINGLE-CHIP MICROCOMPUTER 4500 SERIES

4501 Group
HARDWARE
INSTRUCTIONS
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
RAR (Rotate Accumulator Right)
Instruction
code
D9
D0
Number of Number of Flag CY
0000011101
01D
words
cycles
2
16
1
1
0/1
Skip condition
–
Operation:
→ CY → A3A2A1A0
Grouping:
Description:
Arithmetic operation
Rotates 1 bit of the contents of register A in-
cluding the contents of carry flag CY to the
right.
RB j (Reset Bit)
Instruction
code
D9
D0
Number of Number of Flag CY
00010011j
j
0
2
4
C
+j ₁₆
words
1
cycles
1
–
Skip condition
–
Operation:
(Mj(DP)) ← 0
j = 0 to 3
Grouping:
Description:
Bit operation
Clears (0) the contents of bit j (bit specified
by the value j in the immediate field) of
M(DP).
RC (Reset Carry flag)
Instruction
code
D9
D0
Number of Number of Flag CY
0000000110
006
words
cycles
2
16
1
1
0
Skip condition
–
Operation: (CY) ← 0
Grouping: Arithmetic operation
Description: Clears (0) to carry flag CY.
RCP (Reset Port C)
Instruction
code
D9
D0
Number of Number of Flag CY
1010001100
28C
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (C) ← 0
Grouping: Input/Output operation
Description: Clears (0) to port C.
Rev.2.01 Feb 07, 2005
REJ09B0192-0201
1-71