32/64-Bit 80x86 Assembly Language Architecture

A selected bit can be tested for its state, manipulate the state of the bit upon that tested state, and return a result of the test.

BT Bit Test

BT operand , index

Mnemonic

P

PII

K6

3D!

3Mx+

SSE

SSE2

A64

SSE3

E64T

BT