windows assembler helloworld

.386
.model flat,stdcall
option casemap:none

include     windows.inc
include     user32.inc
includelib  user32.lib
include     kernel32.inc
includelib  kernel32.lib

;注释
;数据段
.data
szText  db  'hello,world',0

;代码段
.code
start:
invoke MessageBox,NULL,offset   szText,NULL,MB_OK
invoke ExitProcess,NULL
end start