Tiger:
  Nasm compiler supports to generate 16bit raw code. User doesn't need to 
install the additional tool. And, the raw code is 16bit code. You need 16bit 
assembler. It is also nasm compiler. So, it is obvious to use nasm to directly 
do it.

Thanks
Liming
>-----Original Message-----
>From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of
>Tiger Liu(BJ-RD)
>Sent: Wednesday, January 31, 2018 1:18 PM
>To: Gao, Liming <liming....@intel.com>; edk2-devel@lists.01.org
>Subject: Re: [edk2] difference between asm16 and asm files
>
>Hi, Liming:
>YES, its code need to be the raw execution code.
>I mean:
>1. We could use traditional asm code , compiled it, and use tools to translate
>them to the raw execution code.
>Is there any difficulty to do this?
>
>So, it would depreciate the asm16 or nasmb concept.
>
>Thanks
>-----邮件原件-----
>发件人: Tiger Liu(BJ-RD)
>发送时间: 2018年1月30日 9:45
>收件人: 'Gao, Liming' <liming....@intel.com>; edk2-devel@lists.01.org
>主题: Re: [edk2] difference between asm16 and asm files
>
>Hi, Liming:
>Thanks for your reply!
>
>I have another question:
>Why not let sec code complied to obj file and linked to lib and EFI image?
>
>I met a problem:
>I tried to use IFDEF marco in an assembly inc file,  and this inc file would be
>included by ResetVec.asm16 But failed, it seemed asm 16 complier not
>recognize this marco exist.
>If I changed ResetVec.asm16 to ResetVec.asm, and compiled again, the
>complier will recognize this marco exist.
>But the last step failed, GenFds.exe seems search a binary file, and not found.
>
>Thanks
>-----邮件原件-----
>发件人: Gao, Liming [mailto:liming....@intel.com]
>发送时间: 2018年1月29日 22:30
>收件人: Tiger Liu(BJ-RD) <tiger...@zhaoxin.com>; edk2-devel@lists.01.org
>主题: RE: [edk2] difference between asm16 and asm files
>
>Asm16 is compiled to the binary file. Asm is compiled to the obj file, and 
>linked
>into lib and EFI image.
>
>Now, asm16 is replaced by nasmb. Asm is replaced by nasm. If you check
>SecCore.inf, you will find ResetVec.asm16 is not used, and ResetVec.nasmb is
>used. I will send the patch to remove the unused ResetVec.asm16 to avoid
>the confuse.
>
>> -----Original Message-----
>> From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of
>> Tiger Liu(BJ-RD)
>> Sent: Monday, January 29, 2018 6:49 PM
>> To: edk2-devel@lists.01.org
>> Subject: [edk2] difference between asm16 and asm files
>>
>> Hi, experts:
>> I have a question about asm16 postfix and asm postfix.
>>
>> Such as:
>> UefiCpuPkg\SecCore\Ia32\ResetVec.asm16
>>
>> Why not use asm as postfix?
>>
>> Thanks
>>
>> Best wishes,
>>
>>
>> ?????
>> ?????????????????????????????????????????????????????
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