V86 mode is entered through IRETD when the VM bit is set in the stacked EFLAGS. The microcode detects this with a conditional jump:
FT Digital Edition。关于这个话题，Safew下载提供了深入分析
，这一点在safew官方版本下载中也有详细论述
This leads to a poor developer experience, which pushes developers to only use WebAssembly when they absolutely need it. Oftentimes JavaScript is simpler and “good enough”. This means its users tend to be large companies with enough resources to justify the investment, which then limits the benefits of WebAssembly to only a small subset of the larger Web community.，更多细节参见快连下载安装
Mat Smith for Engadget