$($a$)$ Learn about the various bit operators: AND, OR$,$ XOR, NOT

Type the examples as shown in class.

Usage: Convert Uppercase letters to LowerCase and vice versa.

ToDo: Do the LowerCase procedure on your own.$($similar to the way its shown in class$).(4$ points$)$

$**$Here is my work so far but im having trouble converting the letters to lower case. i thought it would be as simple as inserting $0$FDh but i was wrong. please help :$)$

Include Irvine$32.$inc

;Uppercase to lowercase

$\mathrm{.}386$

$.$model flat,stdcall

$.$stack $4096$

ExitProcess proto,dwExitCode:dword

$.$data

source byte "Hello JJDDH$222$ me OPASH kHHHHsdf$!!",0$

target byte SIZEOF source DUP$(0)$

sz dword $?$

$.$code

main proc

mov edx, offset source

call writestring ;displays original msg

call converttoUC

call crlf

call crlf

mov edx, offset source

call writestring ;displays new version of msg

invoke ExitProcess,$0$

converttoUC proc

mov ecx, sizeof source

dec ecx ;do one less because of null $0$

mov esi, $0$

LP:

mov AL$,$ source$[$esi$]$ ;initialize esi to $0$

OR AL$,20$h ;used $20$h because its equal to $00100000$b

mov source$[$esi$],$ AL

inc esi ;increase esi to move to the next letter

loop LP

ret

converttoUC endp

invoke ExitProcess,$0$

main ENDP

END main