TASM5 helloworld help needed, linker error

Comments

• MT2002

  July 2008

  
  : It assembles just fine, but when i try to link it i get "fatal: no
  : program entry point" an it aborts :S
  
  In your code, after the END directive must be the entry point routine. Also, in the label [b].startup[/b], the periods (.) are usually reserved for subroutines.
  
  [code].MODEL small
  .STACK 100h
  .DATA
  HelloMessage DB 'Hello, world',13,10,'$'
  .CODE
  start:
  mov ax,@data
  mov ds,ax ;set DS to point to the data segment
  mov ah,9 ;DOS print string function
  mov dx,OFFSET HelloMessage ;point to "Hello, world"
  int 21h ;display "Hello, world"
  mov ah,4ch ;DOS terminate program function
  int 21h ;terminate the program
  
  END start[/code]
  
  I havnt used TASM in awhile so I hope I got it right
  
  : Also, i can't make TASM integrate into my command prompt, i have to
  : write the whole path, ex.: "c: asmin asm32 progname.asm" instead
  : of just tasm32 or tasm progname... :S
  : Anyone know how to fix this? :O
  
  Just add it to the Windows PATH system variable.
  
  [hr][size=1][leftbr].:EvolutionEngine[rightbr][leftbr].:MicroOS Operating System[rightbr][leftbr][link=http://www.brokenthorn.com]Website :: OS Development Series[rightbr][/link][/size]
  
• MartinNJ

  July 2008

  :
  : I havnt used TASM in awhile so I hope I got it right
  :
  
  Well.. it assembles fine. but linker gives same error, about no entry point :S i have searched google, and all seems to be able to solve the problem by writing that start label... :S
  
  
  : : Also, i can't make TASM integrate into my command prompt, i have to
  : : write the whole path, ex.: "c: asmin asm32 progname.asm" instead
  : : of just tasm32 or tasm progname... :S
  : : Anyone know how to fix this? :O
  :
  : Just add it to the Windows PATH system variable.
  
  How do i do that?
  
  
  
  
  
• MT2002

  July 2008

  : Well.. it assembles fine. but linker gives same error, about no
  : entry point :S i have searched google, and all seems to be able to
  : solve the problem by writing that start label... :S
  
  Did the code I give you work?
  
  : : : Also, i can't make TASM integrate into my command prompt, i have to
  : : : write the whole path, ex.: "c: asmin asm32 progname.asm" instead
  : : : of just tasm32 or tasm progname... :S
  : : : Anyone know how to fix this? :O
  : :
  : : Just add it to the Windows PATH system variable.
  :
  : How do i do that?
  
  Windows XP:
  
  Go to your system properties, Advanced tab. On the bottom, you
  will see two buttons: Environmental variables and Error Reporting.
  
  Go to, of course, environmental variables. Its dialog should open.
  
  Under [b]System variables[/b], scroll down until you see [b]Path[/b].
  Highlight it, and hit [b]Edit[/b]. Its dialog will pop up.
  
  Here you can edit the variable name or its value. Do not edit its name.
  
  The value of the variable is a single string. Each should be a directory to a program for the system to search for when executing a command. This must be separated by a semicolen, WITHOUT spaces. ie, this is fine:
  
  [code]
  %SystemRoot%system32;%SystemRoot%;%SystemRoot%System32Wbem;c:microos ools
  asm;c:microos oolspcopy02;
  [/code]
  
  Notice there are no spaces. Just use a semicolen to separate them. The above is from my system, which includes my NASMs directory (Where its *.exe is located at)
  
  Hit Ok, Ok, then Apply. From here on out, if you type NASM in the command prompt, the system searches all directories in its %path% variable. It should find nasm.exe in the NASM path that you set in the variable.
  
  [hr][size=1][leftbr].:EvolutionEngine[rightbr][leftbr].:MicroOS Operating System[rightbr][leftbr][link=http://www.brokenthorn.com]Website :: OS Development Series[rightbr][/link][/size]
  
• MartinNJ

  July 2008

  Thanks for the guide.. that PATH thing works fine now
  
  OH CRAZY!!
  After i fixed the path option thing, the linker works just fine
  And the EXE's work fine most of the time too ^^
  Do you know how to make the linker write the files in small instead of capital letters? :P