Write an assembly program & Machine code that:

Question

Load AL by an arbitrary number, if there is parity even, transfer 80H to the Port 0, and if there is parity odd, transfer 01H to the Port 0.

Answer 1

Assembly Program:

```
; Load AL with an arbitrary number
MOV AL, 10101010b

; Check if there is parity even
MOV AH, AL
AND AH, 01h
PUSHF
SHR AH, 1
AND AH, 01h
XOR AL, AH
POPF
JPE even

; If parity odd, transfer 01H to Port 0
MOV AL, 01h
MOV DX, 00h
OUT DX, AL
JMP end

even:
; If parity even, transfer 80H to Port 0
MOV AL, 80h
MOV DX, 00h
OUT DX, AL

end:
HLT
```

Machine Code:

```
B0 AA 9A E4 01 00 50 D2 E0 24 C0 02 C4 80 E0 EB 05 B0 01 B4 00 EE EB F6 B0 80 B4 00 EE F4
```