os 30 engine

The previous article described how to use a virtual machine to run our written operating system, but the previous operating system only exists in the boot sector, and then we will see how the program jumps from the boot sector to another location.The boot area content is loaded at0X00007C00-0X00007DFF, the man who established the position was the engineer who developed ibm-pc in that year. 0X7E00-0X9FBFF is a memory location that the operating system can use freely. As described in the

The last 30 days of self-made OS learning has come to an end, because there are other more important things that need to be focused on. Books have been multitasking since 15 days, but they have to stop for a while. The following summarizes some problems encountered in the study. 1: Learn about GDT and IDT, and how to understand the length and attributes of segments in the first 14 days. 2: one of these prob

The last 30 days of self-made OS learning has come to an end, because there are other more important things that need to be focused on. Books have been multitasking since 15 days, but they have to stop for a while. The following summarizes some problems encountered in the study. 1: Learn about GDT and IDT, and how to understand the length and attributes of segments in the first 14 days. 2: one of these pro

Cocos2d-x tutorial (30)-Use of the 1.x physical Engine In Cocos2d-x 2.x, developers can directly use Box2d or chipmunk to simulate the physical world. We have also introduced the use of the Box2d physical engine in 17th tutorials (http://blog.csdn.net/u012945598/article/details/17787243), but the APIs in Box2d are still very complex for developers who are new

=" border:none; vertical-align:middle;width:515px;height:266px; "alt=" 20141216075034143.jpg "/>(Fig. 2) Global search engine market share trend in the second half of 2014Looking at Figure 2, during the 2014.5-year period (June-November), Google-global and Baidu maintained this development state. Among them, Google-global's share continued to decline, fell to 53.74%, the decline of 4.27%, according to this trend, Google-global next month is likely to

of different resolutions, I want to play meide. A game and software can be used in two ways. One is that we make adaptive screen games when playing games, for example, we take coordinates based on the screen width, height, image width, height, and so on, rather than writing the dead position coordinates. The second is the adaptive technology of Android OS after 1.6; However, in some cases, it is clear that android does not provide this kind of adapt

Install and deploy the Egret engine development environment in Mac OS X, osegret Overview Egret is developed based on TypeScript, while tsc is developed based on Node. js. Therefore, during the installation process, we must first install the basic support tools. The software to be installed is as follows: Node. jsTypeScript code editor HTTP server (optional) Chrome (optional) EgretJava This document describ

", line 3481, in loadappconfig Raise appconfignotfounderror Google. appengine. Tools. dev_appserver.appconfignotfounderror Refer to the following for conversion from: http://practicalappengine.blogspot.com/2010/01/mac-snow-leopard-google-app-engine.html Author:Ericsk [Mac] Developing Google App Engine on snow leopard After snow leopard (10.6), Mac OSX has set the python set to 2.6, but the system still has the version of server guard 2.5