Question No: 1 Run and analyze the following program and tellwhat will be the ou
ID: 3608420 • Letter: Q
Question
Question No: 1
Run and analyze the following program and tellwhat will be the out put of this program ? Marks: 10
[org 0x0100]
mov ax, 0x000D
int 0x10
mov ax, 0x0C07
xor bx, bx
mov cx, 160
mov dx, 100
l1: int 0x10
loop l1
mov ah, 0
int 0x16
mov ax, 0x0003
int 0x10
mov ax, 0x4c00
int0x21
Question No: 2
Understand the following programcarefully and state what does each block(set of instruction havingsame color) do? Write your answer against each instruction Marks:10
MOV AH,2CH
INT 21H
MOV AL,CH
CALLCONVERT
MOV [BX],AX
MOV AL,CL
CALLCONVERT
MOV [BX + 3],AX
MOV AL,DH
CALLCONVERT
MOV [BX + 6],AX
CONVERTPROC
MOV ah, 0
MOV DL, 10
DIV DL
OR AX, 3030H
RET
CONVERT ENDP
Explanation / Answer
MOV AH,2CH INT 21H INT 21H The function 21H returns hours (0-23) in CH, minutes(0-59) in CL, and seconds (0-59) in DH. MOV AL, CH CALL CONVERT MOV [BX], AX The first statement moves the values of CH to AL and call theprocedure CONVERT ,the function returns AX . The AX value isplaced at the address present in BX. MOV AL,CL CALL CONVERT MOV [BX + 3],AX The first statement moves the values of CL to ALand call the procedure CONVERT ,the function returns AX value andplaces value at the location after adding the address with 3present in BXMOV AL, DH CALL CONVERT MOV [BX + 6],AX The first statement moves the values of DH in AL and call the procedure CONVERT ,the function returns AXvalue and places value at the location after adding the addresswith 6 present in BX CONVERT PROC MOV ah, 0 MOV DL, 10 DIV DL OR AX,3030H RET CONVERT ENDP This is a procedure which updates the value of Ax and returnsAX value to function call Hope this will help you... This is a procedure which updates the value of Ax and returnsAX value to function call Hope this will help you...
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