No Program Entry Point TASM Error
- by Nathan Campos
I'm trying to develop a simple kernel using TASM, using this code:
; beroset.asm
;
; This is a primitive operating system.
;
;**********************************************************************
code segment para public use16 '_CODE'
.386
assume cs:code, ds:code, es:code, ss:code
org 0
Start:
mov ax,cs
mov ds,ax
mov es,ax
mov si,offset err_msg
call DisplayMsg
spin:
jmp spin
;****************************************************************************
; DisplayMsg
;
; displays the ASCIIZ message to the screen using int 10h calls
;
; Entry:
; ds:si ==> ASCII string
;
; Exit:
;
; Destroyed:
; none
;
;
;****************************************************************************
DisplayMsg proc
push ax bx si
cld
nextchar:
lodsb
or al,al
jz alldone
mov bx,0007h
mov ah,0eh
int 10h
jmp nextchar
alldone:
pop si bx ax
ret
DisplayMsg endp
err_msg db "Operating system found and loaded.",0
code ends
END
Then I compile it like this:
C:\DOCUME~1\Nathan\Desktop tasm /la /m2 beroset.asm
Turbo Assembler Version 4.1 Copyright (c) 1988, 1996 Borland International
Assembling file: beroset.asm
Error messages: None
Warning messages: None
Passes: 2
Remaining memory: 406k
C:\DOCUME~1\Nathan\Desktop tlink beroset, loader.bin
Turbo Link Version 7.1.30.1. Copyright (c) 1987, 1996 Borland International
Fatal: No program entry point
C:\DOCUME~1\Nathan\Desktop
What can I to correct this error?
