     $54-$56/84-86:   Jump Vector used in Function Evaluation

       JMP followed by Address: $4C,$LB,$HB

    Jump from $AFE0

    Kernal-Reference:

     STA $54     : $E3C1

     LDA $55     : $B60C $B773
     LDY $55     : $B62B
     STA $55     : $AFD9 $B5F4 $B612 $B767

     ADC $56     : $B8B2 $B8FE
     LDA $56     : $E029
     STA $56     : $AFDE $E000
     STX $56     : $B871
     STY $56     : $B88D