1.4 Compute OPA+OPB+OPA+OPB

;Given the following variables of type word (unsigned) already initialized in memory:
;•OPA = 32767
;•OPB = 1
;Write a program to compute the expression OPA+OPB+OPA+OPB, using AX register, and observe, giving reason, the ;behavior of flags (sign, overflow, carry)

;NB: 8086: Representation of numbers
;8086 processor lets to do operations on numbers in CA2 (signed) or in pure binary
;Let's analyze 'add' instruction:
;-Carry Flag is set to pass between FFFF and 0000
;-Overflow Flag is set to pass between 7FFF and 8000
;So,it's need to be care about the behavior of flags, considering the representation type that we would like to use

.MODEL small
.STACK
.DATA
OPA DW 32767
OPB DW 1
.CODE
.STARTUP
MOV AX,OPA
ADD AX,OPB
ADD AX,OPA
ADD AX,OPB
.EXIT
END