The JB instruction branches to the address specified in the second operand if the value of the bit specified in the first operand is 1. The bit that is tested is not modified. No flags are affected by this instruction.

See Also: JNB

JB bit, offset

RS1

RS0

Bytes

Cycles

Encoding

00100000

bit

offset

Operation

JB
PC = PC + 3
IF (bit) = 1
  PC = PC + offset

Example

JB P1.2 LABEL

JB

JB