C:\MASM611\BIN>amake 1ll

C:\MASM611\BIN>ml /c /coff "1ll.asm"
Microsoft (R) Macro Assembler Version 6.11
Copyright (C) Microsoft Corp 1981-1993.  All rights reserved.

 Assembling: 1ll.asm

C:\MASM611\BIN>link /SUBSYSTEM:CONSOLE "1ll.obj"
Microsoft (R) Incremental Linker Version 6.00.8168
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.

LINK : error LNK2001: unresolved external symbol _start
1ll.exe : fatal error LNK1120: 1 unresolved externals

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.386
.model flat.stdcall
.code
start:
mov eax, 2
add eax, 3
ret
end start