User:Animorphus/Coursework Code Documentation

This page is designed as a second Sandbox for myself, so that I can copy and paste code samples which I have created, screenshot them, and then paste them into appropriate documentation reports.

Stuff

DOSSEG
.MODEL SMALL
.STACK
.DATA

.CODE

MAIN   PROC
  mov   ax,dgroup
  mov   ds,ax

  mov   bx,1234h
  call  Binout

  mov   ax,4c00h                       ;exit (no error)
  int   21h
MAIN   ENDP

;-----------------------------------------------------------------------------
BINOUT   PROC
; In :  BX
; Out:  none
; Uses: None
; Converts a number in BX to binary format and outputs it to the screen
;-----------------------------------------------------------------------------
  push  ax
  push  bx
  push  cx
  push  dx
  mov   ah,02
  mov   cx,16

binloop:  
  shr   bx,1    
  jc    put1
  mov   dl,"0"
  int   21h
  jmp   proceed
put1:
  mov   dl,"1"
  int   21h
proceed:
  dec   cx
  jnz   binloop
  
  mov   dl,"b"
  int   21h
  pop   dx
  pop   cx
  pop   bx
  pop   ax
  ret
BINOUT   ENDP

END MAIN

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