update mult.asm

asm/mult.asm

@@ -1,8 +1,34 @@
-segment .text
+.model small
+
+section
     global main
 
+section .data
+    a db 8
+    b db 3
+
+section .bss
+    res db
+
 main:
+    ; initialization
+    mov ax, @data
+    mov ds, ax
+    mov ah, 0
 
+    ; load numbers on registers
+    mov ax, a
+    mov bl, b
 
-segment .data
-var
+    ; multiplication of the two registers
+    mul bl
+
+    ; save result
+    mov dl, al
+    add dl, 48
+
+    mov ah, 02
+    int 21h
+
+    mov ah, 04Ch
+    int 21h