In recent learning assembly language, you need to use manual intel, whether csdn or otherwise, should download the coins, not cheap, but also a very old data.
Directly to this address: https: //software.intel.com/en-us/articles/intel-sdm download it, I downloaded version of ten files so that each file is small, coupled with Tongji Zhao Jiong Dr. book, it should be all right:
It can be two versions of the file address: https: //software.intel.com/en-us/download/intel-64-and-ia-32-architectures-sdm-combined-volumes-1-2a-2b- 2c-2d-3a-3b-3c-3d-and-4
The second file: https: //software.intel.com/en-us/download/intel-64-and-ia-32-architectures-software-developers-manual-documentation-changes