linux 2.6Ô´´úÂëÇé¾°·ÖÎö±Ê¼ÇÖ®ÄÚ´æ3
¹ØÓÚe820
e820ÊÇBIOSµÄ£¨int 0x15£©ÖжϹØÁªµÄ¡£ÔÚʹÓôËÖжÏʱ£¬axÖбØÐëÊÇe820(ireg.ax=0xe820;)¡£Í¨¹ý´ËÖжϿÉÒԵõ½ÄÚ´æµÄϵͳ²¼¾Ö¡£Í¨¹ýdoÑ»·£¬Ã¿´ÎµÃµ½Ò»¶Î¡£
/linux32/arch/x86/include/asm/e820.h
ºêE820_MAPÊÇstruct e820entryÊý¾Ý½á¹¹µÄÖ¸Õ룬´æ·ÅÔÚ²ÎÊý¿éÖÐÎ»ÒÆÎª0x2d0µÄµØ·½¡£
#define E820MAP 0x2d0 /* our map */
#define E820MAX 128 /* number of entries in E820MAP */
#define E820NR 0x1e8 /* # entries in E820MAP */
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */
#define E820_NVS 4//´ËÏî±íÃ÷rom eprom flash´æ´¢Æ÷¡£
#define E820_UNUSABLE 5
#include <linux/types.h>
struct e820entry {
__u64 addr; /* start of memory segment */
__u64 size; /* size of memory segment */
__u32 type; /* type of memory segment */
} __attribute__((packed));
#define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
struct e820map {
__u32 nr_map;
struct e820entry map[E820_X_MAX];
};
ÿ¸ö½á¹¹¶¼ÊǶÔÒ»¸öÎïÀíÇø¼äµÄÃèÊö£¬²¢ÇÒÒ»¸öÎïÀíÇø¼ä±ØÐëÊÇͬһÀàÐÍ¡£Èç¹ûÓÐһƬµØÖ·Á¬ÐøµÄÎïÀíÄÚ´æ¿Õ¼ä£¬ÆäÖÐÒ»²¿·ÖÊÇramÁíÒ»²¿·ÖÊÇrom£¬¾ÍÒª·Ö³ÉÁ½¸öÇø¼ä¡£¼´Ê¹Í¬Êôram£¬Èç¹ûÆäÖÐÒ»²¿·ÖÒª±£ÁôÓÃÓÚÌØÊâÄ¿µÄ£¬ÄÇÒ²ÊôÓÚ²»Í¬µÄÒ»¸ö·ÖÇø¡£
´Ó0xf0000-0xfffffµÄ×î¸ß4k,¾ÍÊÇbiosʹÓõģ¬Ö»ÒªÓÐbios´æÔÚ£¬¾ÍÐèÒªÁ½¸öÇø¼ä¡£ÄÇônr_map¾Í²»ÄÜСÓÚ2.ÏÖÔÚ1mbµÄ±ß½çÒѾ´òÆÆ£¬½«1mbÒÔÉϵĿռä½ÐHIGH_MEMORY¡£ÎªÁ˼æÈÝ£¬¾ÍÒª±£Áô×î³õµÄ1mb.
#define HIGH_MEMOR
Ïà¹ØÎĵµ£º
Service Discovery Protocol(SDP)ÌṩһÖÖÄÜÁ¦£¬ÈÃÓ¦ÓóÌÐòÓз½·¨·¢ÏÖÄÄÖÖ·þÎñ¿ÉÓÃÒÔ¼°ÕâÖÖ·þÎñµÄÌØÐÔ¡£
·þÎñ·¢ÏÖÐÒé(SDP»òBluetooth SDP)ÔÚÀ¶ÑÀÐÒéÕ»ÖжÔÀ¶ÑÀ»·¾³ÖеÄÓ¦ÓóÌÐòÓÐÌØÊâµÄº¬Ò⣬·¢ÏÖÄĸö·þÎñÊÇ¿ÉÓõĺÍÈ·¶¨ÕâЩ¿ÉÓ÷þÎñµÄÌØÕ÷¡£SDP¶¨ÒåÁËbluetooth client·¢ÏÖ¿ÉÓÃbluetooth server·þÎñºÍËüÃǵÄÌØÕ÷µÄ·½·¨¡£ ......
ʵÓÃСÇÏÃÅʵÔÚÌ«¶àÁË£¬ÂýÂý̽Ë÷°É¡£ÏëÆð¸ÕÓõçÄÔʱ£¬ÌìÌìÔÚ¡¶µçÄÔ°®ºÃÕß¡·ÖÐÕÒСÇÏÃÅ¡£ÕÒµ½Á˾ÍÈç»ñÖÁ±¦¡£ÓÖ¿´µ½ÎÒblogÖÐÓÐÈ˻ظ´²»Ï°¹ßubuntu£¬»¹ÊÇͶ±¼win7¡£ÐÄÏ룬Ӧ¸ÃijЩÈËҲͦÐèÒªÒ»µãʹÓÃСÇÏÃŵĽ»Á÷µÄ¡£ÐÅÊÖдÁËЩ£¬¹©²Î¿¼¡£
±¾ÎÄÊʺϳõ¼¶Óû§ÔĶÁ¡£
1.Öն˸´ÖÆÕ³Ìù
ÓÃgnomeÖÕ¶Ëʱ£¬¶Ô×Ö·ûµÄ¸´ÖÆÕ³Ìù¸Ð¾õûÓÐw ......
LinuxÖеĵØÖ·¿Õ¼ä
ÓÐÕâôһϵÁеÄÎÊÌ⣬ÊÇ·ñÔÚÀ§ÈÅ×ÅÄ㣺Óû§³ÌÐò±àÒëÁ¬½ÓÐγɵĵØÖ·¿Õ¼äÔÚʲô·¶Î§ÄÚ£¿Äں˱àÒëºóµØÖ·¿Õ¼äÔÚʲô·¶Î§ÄÚ£¿Òª¶ÔÍâÉè½øÐзÃÎÊ£¬I/OµÄµØÖ·¿Õ¼äÓÖÊÇʲôÑùµÄ£¿
ÏȻشðµÚÒ»¸öÎÊÌâ¡£Linux×î³£¼ûµÄ¿ÉÖ´ÐÐÎļþ¸ñʽΪelf(Executable and Linkable Format)¡£ÔÚelf¸ñʽµÄ¿ÉÖ´ÐдúÂëÖУ¬ld×ÜÊÇ´Ó0x ......
ÎļþϵͳµÄ×éÖ¯½á¹¹·ÖÎö£¬ÎÒÃÇÄÜ·ÖÎöÊ²Ã´ÄØ£¿Ò²¾ÍÊǵ±ÎÒÃÇÁÐ/Ŀ¼ʱ£¬Ëù¿´µ½µÄ/usr¡¢/etc ... ... /var
µÈĿ¼ÊÇ×öʲôÓõģ¬ÕâЩĿ¼ÊDz»ÊÇÓÐÐ©ÌØ¶¨µÄÓÃ;¡£ÎÞÂÛÄĸöÄĸö°æ±¾µÄLinuxϵͳ£¬¶¼ÓÐÕâЩĿ¼£¬ÕâЩĿ¼Ӧ¸ÃÊDZê×¼µÄ¡£µ±È»¸÷¸öLinux·¢Ðаæ
±¾Ò²»á´æÔÚһЩССµÄ²îÒ죬µ«×ÜÌåÀ´Ëµ£¬»¹ÊÇ´óÌå²î²»¶à¡£
Linux·¢Ðа ......
1¡¢TCP/IP²Î¿¼Ä£ÐÍ
ΪÁËʵÏÖ¸÷ÖÖÍøÂçµÄ»¥Á¬£¬¹ú¼Ê±ê×¼»¯×éÖ¯(ISO)ÖÆ¶¨ÁË¿ª·Åʽϵͳ»¥Á¬(OSI)²Î¿¼Ä£ÐÍ¡£¾¡¹ÜOSIµÄÌåϵ½á¹¹´ÓÀíÂÛÉϽ²ÊDZȽÏÍêÕûµÄ£¬µ«Êµ¼ÊÉÏ£¬ÍêÈ«·ûºÏOSI¸÷²ãÐÒéµÄÉÌÓòúÆ·È´ºÜÉÙ½øÈëÊг¡¡£¶øÊ¹ÓÃTCP/IP ÐÒéµÄ²úÆ·È´´óÁ¿Ó¿ÈëÊг¡£¬¼¸ºõËùÓеŤ×÷Õ¾¶¼ÅäÓÐTCP/IPÐÒ飬ʹµÃTCP/IP ³ÉΪ¼ÆËã»úÍøÂçµÄʵ¼ÊµÄ¹ ......