12. Identify each assembler field (label, opcode, operand, and comment) for the following instructions: a. STAA $\$ 800$;save variable b. BRA LOOP ; branch to loop c. LOOP: LDAA #\$23 ; initialize counter d. INCA ; increment A e. REPEAT LDAA A.-X ; accumulator indexed addressing 13. Express each constant in 3 ways a. The ASCII character X. b. The ASCII character $\mathrm{x}$. C. $100_{10}$ d. $64_{16}$ CS.PB.015