原创 Interrupts & Traps
view point of PC Assembly Language by Paul A. Carter Interrupts ---------- external : caused by devices outside the CPU
2020-06-28 22:12:58
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原创 類別管理完成 2004-08-01
變量更改對照： connTOdb.asp --> inc/conn.asp css.css --> style/default.css news.css --> style/news.css <!--#include file="conn
2020-06-28 21:25:59
原创 assembling,compliling and linking
nasm -f coff first.asm gcc -c driver.c gcc -o first first.o driver.c asm_io.o
2020-06-28 21:25:58
原创 Opration Procedure of Early Computers
First a loader would read an assembler into main memory and transfer contro
2020-06-28 21:25:58
原创 新聞發佈系統升級規劃 2004-07-28
通過fso實現新聞html頁面動態生成； 實現分類的動態增減，權限動態設置（實現方式爲 設置power字段， class1,1|class2,0|……）； 通過fso實現從服務器轉儲備份；
2020-06-28 21:25:58
原创 The UNIX Shell
A shell is a text-based interface between the user and the OS, which is a command interpreter that accepts statements
2020-06-28 21:25:58
原创 服務器被入侵後的處理
時間：中午13：30 接到實驗室電話，說網站信息發佈系統(舊版)用戶無法登陸，察看數據庫後發現所有用戶名和密碼均被改爲 admin ，未發現其它改動。 經過分析，數據庫被非法修改。因爲用戶名被設爲主鍵，正常情況下不會重複。 時間：下午
2020-06-28 21:25:58
原创 Overflow flag & Carry flag
Two of the bits in the FLAGS register that add and sub instructions set are overflow and carry flag: Overflow flag: Se
2020-06-28 21:25:58
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原创 Comparisions
instruction: CMP comparing by subtraction for unsigned numbers: 2 bits in the FLAGS register ZF CF = 1
2020-06-28 21:25:58
原创 DJGPP安裝配置完畢
環境變量設置： Right-click My Computer, select Properties. Select the Advanced tab, then the Environment Variables button. Edi
2020-06-28 21:25:58
原创 Rule of Sign Extension
Decreasing size of data For unsigned numbers: All the bits being removed must be 0 ! For signed numbers: Bits being r
2020-06-28 21:25:58
原创 Runtime Organization of an OS
service as a subroutine Any service except those invoked by hardware interrupts which is called explicitly by an appl
2020-02-21 05:51:16
原创 幫同學調JSP
是一個關於圖片按鈕表單提交的問題。 頁面按鈕源程序……<input border="0" src="pic/queding1.gif" name="submit" width="114" height="52" type="image"
2020-02-21 05:51:16
原创 Three view points of OS
Abstraction : as extended machines Virtualization : as virtual machines Resource management : as resource managers
2020-02-21 05:51:16
原创 Extened Precision Arithmetic Instructions
ADC operand1 = operand1 + carry flag + operand2 SBB operand1 = operand1 - carry flag - operand2 點贊 收藏 分享
2020-02-21 05:51:16
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