From 8d595a1d198687f8d37afb9bb671cf6656001925 Mon Sep 17 00:00:00 2001 From: 0xAX Date: Wed, 28 Jan 2015 23:33:16 +0600 Subject: [PATCH] second part little fix --- boot/linux-bootstrap-2.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/boot/linux-bootstrap-2.md b/boot/linux-bootstrap-2.md index 5cdad30..8f189d6 100644 --- a/boot/linux-bootstrap-2.md +++ b/boot/linux-bootstrap-2.md @@ -11,7 +11,7 @@ Protected mode Before we can move to the native Intel64 [Long mode](http://en.wikipedia.org/wiki/Long_mode), the kernel must switch the CPU into protected mode. What is it protected mode? Protected mode was first added to the x86 architecture in 1982 and was the main mode of Intel processors from [80286](http://en.wikipedia.org/wiki/Intel_80286) processor until Intel 64 and long mode. Main reason to move from the real mode that there is very limited access to the RAM. As you can remember from the previous part, there is only 2^20 bytes or 1 megabyte, or even less 640 kilobytes. -Protected mode brought many changes, but main is another memory management. 24-bit address bus was replaced with 32-bit address bus. It gives 4 gigabytes of physical address. Also [paging](http://en.wikipedia.org/wiki/Paging) support was added which we will see in next parts. +Protected mode brought many changes, but main is another memory management. 24-bit address bus was replaced with 32-bit address bus. It gives 4 gigabytes of physical address. Also [paging](http://en.wikipedia.org/wiki/Paging) support was added which we will see in the next parts. Memory management in the protected mode is divided into two, almost independent parts: