3.5.5 Bit Manipulations
Table 3-6 describes the bit-manipulation instructions. Figure 3-7 shows their object code formats.
Table 3-6. Bit-Manipulation Instructions (1)
*
Size: operand size
B: Byte
Instruction
BSET
Size*
B
Function
1
→
(
<bit-No.> of <EAd>
)
Sets a specified bit in a general register or memory to “1.” The bit is
specified by a bit number, given in 3-bit immediate data or the lower
three bits of a general register.
0
→
(<bit-No.> of <EAd>)
Clears a specified bit in a general register or memory to “0.” The bit is
specified by a bit number, given in 3-bit immediate data or the lower
three bits of a general register.
(<bit-No.> of <EAd>)
→
(<bit-No.> of <EAd>)
Inverts a specified bit in a general register or memory. The bit is
specified by a bit number, given in 3-bit immediate data or the lower
three bits of a general register
(<bit-No.> of <EAd>)
→
Z
Tests a specified bit in a general register or memory and sets or clears
the Z flag accordingly. The bit is specified by a bit number, given in
3-bit immediate data or the lower three bits of a general register.
C
∧
(<bit-No.> of <EAd>)
→
C
ANDs the C flag with a specified bit in a general register or memory.
C
∧
[ (<bit-No.> of <EAd>)]
→
C
ANDs the C flag with the inverse of a specified bit in a general register
or memory.
The bit number is specified by 3-bit immediate data.
C
∨
(<bit-No.> of <EAd>)
→
C
ORs the C flag with a specified bit in a general register or memory.
C
∨
[ (<bit-No.> of <EAd>)]
→
C
ORs the C flag with the inverse of a specified bit in a general register or
memory.
The bit number is specified by 3-bit immediate data.
C
⊕
(<bit-No.> of <EAd>)
→
C
XORs the C flag with a specified bit in a general register or memory.
BCLR
B
BNOT
B
BTST
B
BAND
B
BIAND
BOR
B
BIOR
BXOR
B
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