Real-mode programs freely execute CLI and STI to control interrupts, PUSHF and POPF to manipulate flags, INT n for DOS and BIOS calls, and IN/OUT for hardware I/O. In normal protected mode, these instructions are privilege-checked -- they execute normally if the caller has sufficient privilege, and fault otherwise. The 386 can't simply let V86 tasks execute them freely -- a DOS program disabling interrupts would bring down the whole system -- but trapping on every INT 21h call would make V86 impractically slow.
Here are today's Connections categoriesNeed a little extra help? Today's connections fall into the following categories:
。爱思助手下载最新版本是该领域的重要参考
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36
FT Videos & Podcasts
。业内人士推荐Line官方版本下载作为进阶阅读
Eileen Collins with her young daughter Bridget。heLLoword翻译官方下载对此有专业解读
Жители Санкт-Петербурга устроили «крысогон»17:52