org directive

[Vikas Kumar]

Hi SMarF
>From what  I have read on the net, I think DOS programs start at "org 100h"

Vikas

On 7/4/06, SMarF at gmx.de <SMarF at gmx.de> wrote:
> Hi there,
>
> trying to write my on DOS-EXE-stub, I tried the org directive in YASM (can't say enough "thank you" for this nice :) program!), but I don't get it run. Perhaps anyone can help me out or note this as a bug report:
>
> BITS 16
> ;DOS-EXE-Header
>     db 'M','Z'
> .... ;some more header information
>     dw 0
> ORG 0 ;resetting offset from 40h to 0h
>     push cs
>     pop  ds
>     mov  dx,msg              ;dx: offset of message to print
>     mov  ah,009h             ;ah=09: print string
>     int  21h                 ;DOS software interrupt
>     mov  ax,04C01h           ;ah=4C: terminate program, al=01: errorcode
>     int  21h                 ;DOS software interrupt
> msg:
>     db 'This program needs Win32',13,10,'$'
>
> After assembling with the latest snapshot (r1590) register dx is loaded with offset 0x4E instead of 0xE.
>
> Thank you for your help and your work, best regards
> Stefan
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