L MB0 //Load jump destination number into ACCU 1-L-L.
JL LSTX //Jump destination if ACCU 1-L-L > 3.
JU SEG0 //Jump destination if ACCU 1-L-L = 0.
JU SEG1 //Jump destination if ACCU 1-L-L = 1.
JU COMM //Jump destination if ACCU 1-L-L = 2.
JU SEG3 //Jump destination if ACCU 1-L-L = 3.
LSTX: JU COMM
SEG0: * //Permitted instruction
*
JU COMM
SEG1: * //Permitted instruction
*
JU COMM
SEG3: * //Permitted instruction.
*
JU COMM
COMM: *
*