Table 2-8 Bit-Manipulation Instructions (cont)
Instruction
Size*
Function
BXOR
B
C
(<bit-No.> of <EAd>) → C
XORs the C flag with a specified bit in a general register or memory,
and stores the result in the C flag.
BIXOR
B
C
[~(<bit-No.> of <EAd>)] → C
XORs the C flag with the inverse of a specified bit in a general
register or memory, and stores the result in the C flag.
The bit number is specified by 3-bit immediate data.
(<bit-No.> of <EAd>) → C
BLD
B
B
Copies a specified bit in a general register or memory to the C flag.
~ (<bit-No.> of <EAd>) → C
BILD
Copies the inverse of a specified bit in a general register or memory
to the C flag.
The bit number is specified by 3-bit immediate data.
C → (<bit-No.> of <EAd>)
BST
B
B
Copies the C flag to a specified bit in a general register or memory.
~ C → (<bit-No.> of <EAd>)
BIST
Copies the inverse of the C flag to a specified bit in a general register
or memory.
The bit number is specified by 3-bit immediate data.
Notes: * Size:Operand size
B: Byte
Certain precautions are required in bit manipulation. See 2.9.2, Notes on Bit Manipulation, for
details.
36
ETC [ ETC ]
