Unknown relocation type (1) error

[valentin68]

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I am good with M68000 but X86 is diffficult for me. I am trying to assemble this simple program with MASM

.MODEL SMALL
.data?
  ONE  dB ?
  TWO  dB ?
  stack db  100 dup(?)

.data
  MSG  db 13,10, 'Enter deree of polynomials:  $'
  MSG2 db 13,10, 'Enter coefficient of x^ $'
  MSG3 db 13,10, 'The polynomial created is: $'
  MSG4 db 13,10, 'The first derivative is: $'
  STR1 db  255 DUP('$')

.code

_start:

            mov ax, offset MSG
            mov ds, ax 

end _start

and I keep getting the error Unknown relocation type (1) for symbol MSG. I know what this is (it happens when the displacement is bigger than that allowed by the model or something like this) but I do not know how to solve this error (I know MASM is a 32 bit assembler and I am trying to write a 16 bit code). What I am trying to do is to load the pointer to .data into ds register.

Pretty please, help me!

[aw27]

try mov   ax, seg MSG instead of mov ax, offset MSG
(Untested)
And find a way to exit the program without crashing.

[valentin68]

try mov   ax, seg MSG instead of mov ax, offset MSG
(Untested)
And find a way to exit the program without crashing.

I get a symbol type conflict
also with
mov ax, segment MSG
syntax error segment

[aw27]

I told you SEG and why do you use SEGMENT?

[valentin68]

I used both seg  and segment
mov ax, seg msg      (symbol type conflict)
mov ax, segment msg (told on stackexchange by someone  - syntax error segment)

None works
I know MASM is 32 bit compiler, I am trying now to use a 16 bit compiler.

[jj2007]

No errors here 8)

Code Select Expand

*** Assemble 16-bit app using mlv614 /c  /Fo "NewFile" ***
Microsoft (R) Macro Assembler Version 6.14.8444
Copyright (C) Microsoft Corp 1981-1997.  All rights reserved.

Assembling: tmp_file.asm

*** Link using link16   ***

Microsoft (R) Segmented Executable Linker  Version 5.60.339 Dec  5 1994
Copyright (C) Microsoft Corp 1984-1993.  All rights reserved.

LINK : warning L4021: no stack segment

Note that MSG is a structure defined in Windows.inc (which you don't include...):

Code Select Expand

MSG STRUCT
  hwnd      DWORD      ?
  message   DWORD      ?
  wParam    DWORD      ?
  lParam    DWORD      ?
  time      DWORD      ?
  pt        POINT      <>
MSG ENDS

Have you tried MSG1? Do you use link16.exe?

[valentin68]

    Microsoft (R) Macro Assembler Version 6.14.8444
Copyright (C) Microsoft Corp 1981-1997.  All rights reserved.

Assembling: derivative 1.asm
derivative 1.asm(18) : error A2006: undefined symbol : DGROUP
_
Assembly Error
Press any key to continue . . .

I modified the MSG to MSG1  i still have errors
(MSG is a string in my program)


Can you paste please exactly the listing of the program that you have assembled?

[jj2007]

Can you paste please exactly the listing of the program that you have assembled?

Code Select Expand

.MODEL SMALL
.data?
  ONE  dB ?
  TWO  dB ?
  stack db  100 dup(?)

.data
  MSG  db 13,10, 'Enter deree of polynomials:  $'
  MSG2 db 13,10, 'Enter coefficient of x^ $'
  MSG3 db 13,10, 'The polynomial created is: $'
  MSG4 db 13,10, 'The first derivative is: $'
  STR1 db  255 DUP('$')

.code

_start:

            mov ax, offset MSG
            mov ds, ax

end _start

You may notice that this is exactly your code 8)

I just copied & pasted it into a File/New text file in RichMasm, and then hit F6. That builds fine and produces an error message saying that 16-bit applications are not allowed on my machine. Check your commandline options...

[qWord]

valentin68,
you must use the 16 bit aware linker (link16.exe). Then the code from first post will build.

[jj2007]

Warning: Proggie works fine on my WinXP VM but I had to move it to drive C: - "cannot execute xyz.exe" if it's a substituted drive.

[aw27]

This builds fine and does not crash.
Tested in DosBox

Code Select Expand


.186

.model  small

.stack  100h

.data?
  ONE  dB ?
  TWO  dB ?


.data
  MSG  db 13,10, 'Enter deree of polynomials:  $'
  MSG2 db 13,10, 'Enter coefficient of x^ $'
  MSG3 db 13,10, 'The polynomial created is: $'
  MSG4 db 13,10, 'The first derivative is: $'
  STR1 db  255 DUP('$')

.code

_start:

            mov ax, seg MSG
            mov ds, ax
    mov  ax, 4c00h       ; terminate program
    int 21h
end _start


[valentin68]

yes as someone above said I have to use the link16.exe
The same answer I've got from stackexchange.

Very hard to work on X86 (especially on 16 bit)

For those that do not know, I have written 10 000-20 000 pages (not lines) of M68000 code 25 years ago for UBISOFT (It took me half a year).
I was paid with 400 USD for this.
It was the game Celtic Legends for Atari 1000.

[jj2007]

Atari 1000? Or rather 520ST? Compliments in any case ;-)

[aw27]

Very hard to work on X86 (especially on 16 bit)

Indeed, and if you have more x86 hard nuts like these  :shock: to crack be aware that there is a subforum called "16 bit DOS Programming". Not really popular these days, the last post was 4 months ago.

[qWord]

for UBISOFT (It took me half a year).
I was paid with 400 USD for this.

Wow! 400$/(6*4*5*8h) = 42ct/h.