HT46R47
RRA [m]
Rotate right and place result in the accumulator.
Description
Data in the specified data memory is rotated 1 bit right with bit 0 rotated into
bit 7, leaving the rotated result in the accumulator. The contents of the data
memory remain unchanged.
Operation
ACC.(i) ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)
ACC.7 ¬ [m].0
Affected flag(s)
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
¾
¾
¾
¾
¾
¾
RRC [m]
Rotate data memory right through carry.
Description
The contents of the specified data memory and the carry flag are together ro-
tated 1 bit right. Bit 0 replaces the carry bit; the original carry flag is rotated
into the bit 7 position.
Operation
[m].i ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)
[m].7 ¬ C
C ¬ [m].0
Affected flag(s)
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
¾
¾
¾
¾
¾
Ö
RRCA [m]
Rotate right through carry and place result in the accumulator.
Description
Data of the specified data memory and the carry flag are rotated 1 bit right.
Bit 0 replaces the carry bit and the original carry flag is rotated into the bit 7
position. The rotated result is stored in the accumulator. The contents of the
data memory remain unchanged.
Operation
ACC.i ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)
ACC.7 ¬ C
C ¬ [m].0
Affected flag(s)
TC2 TC1 TO PD OV
Z
AC
C
¾
¾
¾
¾
¾
¾
¾
Ö
Rev. 1.40
38
July 18, 2001
ETC [ ETC ]
