1. Coding

2. MOVZX INCLUDE Irvine32.inc .data Uarray WORD 1000h,2000h,3000h,4000h
.code
main PROC
; Move with zero extension:
movzx eax,Uarray
movzx ebx,Uarray+2
movzx ecx,Uarray+4
movzx edx,Uarray+6
call DumpRegs
exit
main ENDP
END main

3. MOVSX INCLUDE Irvine32.inc .data Sarray SWORD -1,-2,-3,-4 .code
main PROC
; Move with sign extension:
;movsx eax,Sarray
;movsx ebx,Sarray+2
;movsx ecx,Sarray+4
;movsx edx,Sarray+6
call DumpRegs
exit
main ENDP
END main

4. INCLUDE irvine32.inc .code main PROC mov ax,15 ; start ax=15
LOOP
INCLUDE irvine32.inc
.code
main PROC
mov ax,15 ; start ax=15
call DumpRegs
mov ecx,6 ; set start ecx = 6
L1: ; L1 = destination
dec ax
loop L1
exit
main ENDP
END main

5. mov ecx, 6 ;loop ecx = 7 times ..6 5 4 3 2 1 0 call DumpRegs L2:
INCLUDE Irvine32.inc
.code
main PROC
mov eax, 1 ;start eax=1
mov ebx, 1 ;ebx = 1
mov edx, 10 ;edx = 10
mov ecx, 6 ;loop ecx = 7 times
call DumpRegs
L2:
inc ebx
dec edx
add eax, 1 ; add value in eax + 1
loop L2
exit
main ENDP
END main
LOOP

6. Color TITLE Chapter 5 Exercise 1 (ch05_01.asm) Comment @
Description: Write a program that displays the same string in four different colors, using a loop. Call the SetTextColor procedure from the book's link library. Any colors may be chosen, but you may find it easiest to change the foreground color.

7. INCLUDE Irvine32.inc
.data
str1 BYTE "This line is displayed in color",0
.code
main PROC
mov eax, white + (green * 16) ; white on green backgrouund
mov ecx,4 ; loop counter
L1: call SetTextColor
mov edx,OFFSET str1
call WriteString
call Crlf
add eax,2 ; add 2 to foreground color
loop L1
exit
main ENDP
END main

8. Print output to screen INCLUDE Irvine32.inc .code main PROC
mov eax,1234h ; input argument
call WriteHex ; show hex number
call Crlf ; end of line
; no call DumpRegs bcoz no register to be display
exit
main ENDP
END main

9. Clear screen before print output
INCLUDE Irvine32.inc
.code
main PROC
call Clrscr ; clear screen first
mov eax,15 ; eax = F
call Delay
call DumpRegs
exit
main ENDP
END main

10. ; Display a null-terminated string and ; move the cursor to the beginning of the next screen line.
INCLUDE Irvine32.inc
.data
str1 BYTE "Assembly language is easy!",0
.code
main PROC
mov edx,OFFSET str1
call WriteString
call Crlf
exit
main ENDP
END main

11. ;Display a null-terminated string and ;move the cursor to the beginning of the next screen line (use embedded CR/LF)
INCLUDE Irvine32.inc
.data
str1 BYTE "Assembly language is easy!",0Dh,0Ah,0
str2 BYTE "I like Assembly language!",0Dh,0Ah,0
.code
main PROC
mov edx,OFFSET str1
call WriteString
call Crlf
mov edx,OFFSET str2
exit
main ENDP
END main

12. Display an unsigned integer in binary, decimal, and hexadecimal, each on a separate line.
INCLUDE Irvine32.inc
.data
IntVal = 35
.code
main PROC
mov eax,IntVal
call WriteBin ; display binary
call Crlf
call WriteDec ; display decimal
call WriteHex ; display hexadecimal
exit
main ENDP
END main

13. Assignment 1 USAGE of LIBRARY PROCEDURE
Display a null-terminated string and move the cursor to the beginning of the next screen line (use embedded CR/LF) for the following strings
USAGE of LIBRARY PROCEDURE
Clrscr - Clears console, locates cursor at upper left corner
DumpRegs – Displays general-purpose registers and flags (hex)
WriteChar - Writes a single character to standard output
WriteHex - Writes an unsigned 32-bit integer in hexadecimal format
SetTextColor - Sets foreground and background colors of all subsequent console text output

14. Assignment 2
Write a program to display a null-terminated string and move the cursor to the beginning of the next screen line (use embedded CR/LF) as the following output.
Before proceed to next string, display an unsigned integer 85 in binary, decimal, and hexadecimal, each on a separate line. Please refer the following output.

15. Use the following variable definition for the remaining questions in this section: .data MyByte SBYTE -4,-2,3,1 MyWord WORD 1000h,2000h,3000h,4000h For the following statements, state whether or not the instruction is valid. Give comment to describe the reason why the instruction become valid or invalid. mov ax, MyByte mov ax,MyWord What will be the value of the destination operand after each of the following instructions executes in sequence? mov ax, MyWord ; c) ax:______________________________ mov ax,[MyWord + 2] ; d) ax:_____________________________ add ax, [MyWord + 2] ; e) ax:_____________________________

16. By Using PTR keywords, create and complete the following program that can produce the following output based on given variables.
 .data
varB BYTE 65h,31h,56h,65h
varW WORD 6543h,1202h
varD DWORD h
.code
mov _____________________ ; answer : 6556h
mov _____________________ ; answer : 21h
mov _____________________ ; answer : 02h
mov _____________________ ; answer: 8765
mov _____________________ ; answer : h

17. mov ax,WORD PTR [varB+2]
mov bl,BYTE PTR varD
mov bl,BYTE PTR [varW+2]
mov ax,WORD PTR [varD+2]
mov eax,DWORD PTR varW

18. TITLE Add and Subtract, Version 2 (AddSub2. asm) INCLUDE Irvine32. inc
TITLE Add and Subtract, Version 2 (AddSub2.asm) INCLUDE Irvine32.inc .data val1 dword 10000h val2 dword 40000h val3 dword 0DDh val4 dword 200h finalVal dword ? .code main PROC add eax,val1 ; start with 10000h add eax,val2 ; add 40000h sub eax,val3 ; subtract 20000h add eax,val4 mov finalVal,eax ; store the result (30000h) Call DumpRegs ; display the registers Exit main ENDP END main

19. TITLE mul binary and hexa, Version 2 (mulbinhexa.asm) INCLUDE Irvine32.inc .data num1 dword 1111b num2 dword 0Ah finalnum dword ? .code main PROC mov eax,num1 ; start 100b mov eax,num2 ; mul 11b mul eax mov finalnum,eax ; store the result (12=C call DumpRegs ; display the registers exit main ENDP END main