📄 s13_02.htm
字号:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"><HTML><HEAD><TITLE>80386 Programmer's Reference Manual -- Section 13.2</TITLE></HEAD><BODY><B>up:</B> <A HREF="c13.htm">Chapter 13 -- Executing 80286 Protected-Mode Code</A><BR><B>prev:</B> <A HREF="s13_01.htm">13.1 80286 Code Executes as a Subset of the 80386</A><BR><B>next:</B> <A HREF="s13_03.htm">13.3 Differences From 80286</A><P><HR><P><H1>13.2 Two ways to Execute 80286 Tasks</H1>When porting 80286 programs to the 80386, there are two cases to consider:<OL><LI> Porting an entire 80286 system to the 80386, complete with 80286operating system, loader, and system builder.<P>In this case, all tasks will have 80286 TSSs. The 80386 is being usedas a faster 286.<P><LI> Porting selected 80286 applications to run in an 80386 environmentwith an 80386 operating system, loader, and system builder.<P>In this case, the TSSs used to represent 80286 tasks should bechanged to 80386 TSSs. It is theoretically possible to mix 80286 and80386 TSSs, but the benefits are slight and the problems are great. Itis recommended that all tasks in a 80386 software system have 80386TSSs. It is not necessary to change the 80286 object modulesthemselves; TSSs are usually constructed by the operating system, bythe loader , or by the system builder . Refer to <A HREF="c16.htm">Chapter 16</A> for furtherdiscussion of the interface between 16-bit and 32-bit code.</OL><P><HR><P><B>up:</B> <A HREF="c13.htm">Chapter 13 -- Executing 80286 Protected-Mode Code</A><BR><B>prev:</B> <A HREF="s13_01.htm">13.1 80286 Code Executes as a Subset of the 80386</A><BR><B>next:</B> <A HREF="s13_03.htm">13.3 Differences From 80286</A></BODY>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -