using equ in FASM

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rCX

Joined: 29 Jul 2007
Posts: 172
Location: Maryland, USA

rCX 29 Jul 2007, 17:30

Hello, I'm new to FASM, (from NASM). When I assemble the following code...

Code:

format binary
use16
org 100h

Label:
 mov bx,var
  var equ 1

...it give me this error...

Code:

flat assembler  version 1.67.21  (336840 kilobytes memory)
a.asm [16]:
mov bx,var
error: undefined symbol.

Is there a way to use "var equ 1" after "mov bx,var" in FASM?

Thanks

29 Jul 2007, 17:30

DOS386

Joined: 08 Dec 2006
Posts: 1900

DOS386 29 Jul 2007, 18:00

> I'm new to FASM, (from NASM)

Make sure to avoid (just remove them) offending BYTE's:

Code:

CMP EAX, BYTE 3

Code:

format binary
use16
org 100h

Label:
        mov bx,var
        var equ 1

> ...it give me this error...

It's correct Shocked

> Is there a way to use "var equ 1" after "mov bx,var" in FASM?

NO. EQU works at preprocess level Idea

Code:

format binary
use16
org 100h

Label:
        mov bx,var
        ...
        ret
var:   db 0,0

WOW: was faster than Loco Laughing

_________________
Bug Nr.: 12345

Title: Hello World program compiles to 100 KB !!!

Status: Closed: NOT a Bug

Last edited by DOS386 on 29 Jul 2007, 18:03; edited 2 times in total

29 Jul 2007, 18:00

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 29 Jul 2007, 18:01

No, but you can use "=" instead which is an assembly time variable and can be forward referenced (if you assing a value to it only once).

Read the manual before getting deeper because fasm isn't just a NASM written in assembly.

29 Jul 2007, 18:01

rCX

Joined: 29 Jul 2007
Posts: 172
Location: Maryland, USA

rCX 29 Jul 2007, 18:27

Thanks it works! I'll make sure I read the whole manual Smile

29 Jul 2007, 18:27

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