HELP ME PLEASE!!! it is a project i have to do...

Comments

• yaochen42

  December 2009

  anyone??? please help!!!
  
• AsmGuru62

  December 2009

  [color=Blue]Segment register(s) not set - see RED...[/color]
  :
  : TITLE conversion and output to a file
  :
  : ;-----------------------------------------------------------------
  :
  : ;program description: read from a file then convert char to binary
  : ;then convert back to text into output file
  : ;author: Yao Jiang
  : ;creation date: 12-01-09
  :
  : ;-----------------------------------------------------------------
  :
  : include /masm32/include/masm32rt.inc
  :
  : ;-----------------------------------------------------------------
  :
  : .data
  :
  : inname db 'file1.txt',0
  : outname db 'file2.dat',0
  : inh dw ?
  : outh dw ?
  : buff db ?
  :
  : ;-----------------------------------------------------------------
  :
  : .code
  
  [color=Red]: mov ax, @DATA
  : mov ds, ax[/color]
  :
  : openfile:
  :
  : mov dx, offset inname
  : mov ah, 3dh
  : mov al, 0 ;0 to open the file to read
  : int 21h
  : jc error ;check for error, ie file not found
  : ;or cant be opened
  : mov inh, ax ;save file handle
  :
  : read:
  :
  : mov ah, 3fh ;read data from file
  : mov bx, inh
  : mov dx, offset buff
  : mov cx, 1 ;read 1 type
  : int 21h
  : jc error
  : cmp ax, cx ;check for end of file
  : jne endoffile
  : mov al, buff
  : call write
  : jmp read
  :
  : endoffile:
  :
  : mov ah, 3eh ;close file
  : mov bx, inh
  : int 21h
  : mov ah, 3eh
  : mov bx, outh
  : int 21h
  :
  : PROC write
  :
  : push ax bx cx dx
  : mov ah, 2
  : mov dl, buff
  : int 21h
  : pop ax bx cx dx
  : ret
  :
  : ENDP
  :
  : end start
  :
  : ;-----------------------------------------------------------------
  :
  : so far nothing works, for some reason i cant open the file and im
  : having trouble trying to do conversion before writing to the new file
  :
  : PLEASE HELP!!!
  :
  : by the way im using masm32 because professor told the class to
  :
  :
  
• yaochen42

  December 2009

  i just do the same thing and its still not working... still giving the error "cannot open file"
  
• AsmGuru62

  December 2009

  [color=Blue]I do not have masm32 - I use FASM, so I can't really run the code and see. Do you have a debugger? If not, I suggest AFD - it is an OK debugger for DOS code. You can get it here:
  
  [link=http://www.programmersheaven.com/download/21643/download.aspx]http://www.programmersheaven.com/download/21643/download.aspx[/link]
  [/color]
• anthrax11

  December 2009

  I haven't tested it, but it seems that:
  
  1) the output file isn't opened, only the input file is, the code for it should look like this:
  [code]
  mov dx, offset outname
  mov ah, 3dh
  mov al, 1 ;1 to open the file to write
  int 21h
  jc error ;check for error, ie file not found
  ;or cant be opened
  mov outh, ax ;save file handle
  [/code]
  2) your error handler is missing (I assume you just left it out to save space since you're also missing the "start:" label)
  3) the exit command is missing, add this after closing the files:
  [code]
  mov ax, 4c00h
  int 21h
  [/code]
  4) registers must be popped back in reverse order
  5) your writing to file code is missing, try this:
  [code]
  PROC write
  
  push ax bx cx dx
  mov ah, 2
  mov dl, buff
  int 21h
  [color=Red]
  mov ah, 40h
  mov bx, outh
  mov cx, 1
  mov dx, offset buff
  int 21h
  
  pop dx cx bx ax
  [/color]
  ret
  
  ENDP
  [/code]
  
• yaochen42

  December 2009

  for the line
  
  mov ax, @data
  
  i keep getting the error "undefined symbol"
  
• anthrax11

  December 2009

  Try one of these:
  [code]
  mov ax, data
  mov ax, seg inname
  [/code]
  Also, consider that the strength of Masm32 is 32-bit Windows programming. For 16-bit, [link=http://flatassembler.net/]Fasm[/link] is more suitable.