4507 Datasheet, PDF (71/115 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4507 Group
MACHINE INSTRUCTIONS (INDEX BY ALPHABET) (continued)
RTS (ReTurn from subroutine and Skip)
Instruction
code
D9
D0
Number of Number of Flag CY Skip condition
0001000101
045
2
16
words
1
cycles
2
–
Skip at uncondition
Operation:
(PC) ← (SK(SP))
(SP) ← (SP) – 1
Grouping: Return operation
Description: Returns from subroutine to the routine
called the subroutine, and skips the next in-
struction at uncondition.
SB j (Set Bit)
Instruction
code
D9
D0
Number of Number of Flag CY
00010111j
j
0
2
5
C
+j ₁₆
words
1
cycles
1
–
Skip condition
–
Operation:
(Mj(DP)) ← 0
j = 0 to 3
Grouping: Bit operation
Description: Sets (1) the contents of bit j (bit specified by
the value j in the immediate field) of M(DP).
SC (Set Carry flag)
Instruction
code
D9
D0
Number of Number of Flag CY
0000000111
007
words
cycles
2
16
1
1
1
Skip condition
–
Operation: (CY) ← 1
Grouping: Arithmetic operation
Description: Sets (1) to carry flag CY.
SCP (Set Port C)
Instruction
code
D9
D0
Number of Number of Flag CY
1010001101
28D
words
cycles
2
16
1
1
–
Skip condition
–
Operation: (C) ← 1
Grouping: Input/Output operation
Description: Sets (1) to port C.
Rev.3.01 2005.02.04 page 71 of 111
REJ03B0107-0301