2.2.8 BCLR
BCLR (Bit CLeaR)
Bit Clear
Operation
0
→
(<bit No.> of <EAd>)
Assembly-Language Format
BCLR
#xx:3, <EAd>
BCLR
Rn, <EAd>
Operand Size
Byte
Condition Code
H: Previous value remains unchanged.
N: Previous value remains unchanged.
Z: Previous value remains unchanged.
V: Previous value remains unchanged.
C: Previous value remains unchanged.
I
UI
H
U
N
Z
V
C
—
—
—
—
—
—
—
—
Description
This instruction clears a specified bit in the destination operand to 0. The bit number can be
specified by 3-bit immediate data, or by the lower three bits of a general register (Rn). The
specified bit is not tested. The condition-code flags are not altered.
Available Registers
Rd:
R0L to R7L, R0H to R7H
Rn:
R0L to R7L, R0H to R7H
ERd: ER0 to ER7
7
0
Specified by #xx:3 or Rn
Bit No.
0
<EAd>
54