An instruction at address 050 in the basic computer has I = 0, an operation code of the AND instruction, and an address part equal to 0AB (all numbers are in hexadecimal). The memory word at address 0AB contains the operand FFFF and the content of AC is BA73.

Go over the instruction cycle and determine the contents of the following registers at the end of the execute phase: PC, AR, DR, AC, and IR. Repeat the problem six more times starting with an operation code of another memory reference instruction.

Instruction	PC	AR	DR	AC	IR
Initial
AND
ADD
LDA
STA
BUN
BSA
ISZ