Question Question #$1$:

The program below consists of three different control sections; the instructions and directives for control section PROGA is shown.

$\backslash$table$[[,0000,$PROGA,START,$0],[1,,,$EXTDEF,LISTA,ENDA$],[2,,,$EXTREF,LISTB, ENDB,LISTC,ENDC$],[3,,$dotsdotsdots,,$],[4,0020,$REF$1,+$ LDA,ENDB$],[5,0024,$REF$2,$LDT$,$LISTA$],[6,0027,$REF$3,$LDX$,=$ C$\text{'}12],[7,,$dotsdotsdots.,,$],[8,0040,$LISTA,EQU,$**$