Please I need a professional explanation for mouse EMU8068 code in 3 pages as a word text

; mouse test

name "mouse"

org 100h

print macro x, y, attrib, sdat

LOCAL s_dcl, skip_dcl, s_dcl_end

pusha

mov dx, cs

mov es, dx

mov ah, 13h

mov al, 1

mov bh, 0

mov bl, attrib

mov cx, offset s_dcl_end - offset s_dcl

mov dl, x

mov dh, y

mov bp, offset s_dcl

int 10h

popa

jmp skip_dcl

s_dcl DB sdat

s_dcl_end DB 0

skip_dcl:

endm

clear_screen macro

pusha

mov ax, 0600h

mov bh, 0000_1111b

mov cx, 0

mov dh, 24

mov dl, 79

int 10h

popa

endm

print_space macro num

pusha

mov ah, 9

mov al, ' '

mov bl, 0000_1111b

mov cx, num

int 10h

popa

endm

jmp start

curX dw 0

curY dw 0

curB dw 0

start:

mov ax, 1003h ; disable blinking.

mov bx, 0

int 10h

; hide text cursor:

mov ch, 32

mov ah, 1

int 10h

; reset mouse and get its status:

mov ax, 0

int 33h

cmp ax, 0

jne ok

print 1,1,0010_1111b, " mouse not found :-( "

jmp stop

ok:

clear_screen

print 7,7,0010_1011b," note: in the emulator you may need to press and hold mouse buttons "

print 7,8,0010_1011b," because mouse interrupts are not processed in real time. "

print 7,9,0010_1011b," for a real test, click external->run from the menu. "

print 10,11,0010_1111b," click/hold both buttons to exit... "

; display mouse cursor:

mov ax, 1

int 33h

check_mouse_buttons:

mov ax, 3

int 33h

cmp bx, 3 ; both buttons

je hide

cmp cx, curX

jne print_xy

cmp dx, curY

jne print_xy

cmp bx, curB

jne print_buttons

print_xy:

print 0,0,0000_1111b,"x="

mov ax, cx

call print_ax

print_space 4

print 0,1,0000_1111b,"y="

mov ax, dx

call print_ax

print_space 4

mov curX, cx

mov curY, dx

jmp check_mouse_buttons

print_buttons:

print 0,2,0000_1111b,"btn="

mov ax, bx

call print_ax

print_space 4

mov curB, bx

jmp check_mouse_buttons

hide:

mov ax, 2 ; hide mouse cursor.

int 33h

clear_screen

print 1,1,1010_0000b," hardware must be free! free the mice! "

stop:

; show box-shaped blinking text cursor:

mov ah, 1

mov ch, 0

mov cl, 8

int 10h

print 4,7,0000_1010b," press any key.... "

mov ah, 0

int 16h

ret

print_ax proc

cmp ax, 0

jne print_ax_r

push ax

mov al, '0'

mov ah, 0eh

int 10h

pop ax

ret

print_ax_r:

pusha

mov dx, 0

cmp ax, 0

je pn_done

mov bx, 10

div bx

call print_ax_r

mov ax, dx

add al, 30h

mov ah, 0eh

int 10h

jmp pn_done

pn_done:

popa

ret

endp