JS               Jump If Sign                        Flags: not altered

JS short-label

Jump Condition:  Jump if SF = 1

JS transfers control to short-label if the Sign Flag is set. The
target of the jump must be within -128 to +127 bytes of the next
instruction.

                                                                          
Operands                  Clocks   Transfers  Bytes   Example
short-label              16 or 4       -        2     JS NEGATIVE
                                                                          

Notes:         Use JNS, Jump if No Sign, to jump if the sign flag
is clear.

See also: JNS

JS Jump If Sign