Reverse Keyboard

Example if capslock is on, A will be a.. and if off a will be A

.model small
.stack 50
.data
msg db "Enter a character: $"
.code
main proc
mov ax,@data
mov ds,ax
mov ah,09
mov dx,offset msg
int 21h

start: mov ah,07
int 21h

cmp al,0dh
je exit

cmp al,41h
je smol

cmp al,41h
ja sa

cmp al,41h
jb start


cmp al,5ah
je smol


cmp al,5ah
jb smol

cmp al,61h
je cap

cmp al,61h
ja cap

cmp al,7ah
je cap

cmp al,7ah
ja start

cmp al,7ah
jb ca



sa: cmp al,5ah
je smol

cmp al,5ah
jb smol



ca: cmp al,61h
je cap

cmp al,61h
ja cap

cmp al,61h
jb start

cap: sub al,20h
jmp disp


smol: add al,20h
jmp disp

disp: mov ah,02
mov dl,al
int 21h
jmp start

exit: mov ax,4c00h
int 21h

main endp
end main