如何从文本模式切换到视频模式 [英] How do I switch to vedio mode from text mode

问题描述

char * ptr = 0xA800;



指向屏幕像素的指针。它在程序中不能正常工作，因为它通常是一种文本模式。



我尝试过：



切换到图形模式，其imp使用int86或graphics.h（initgraph）。请告诉我，如果有任何其他方式切换到图形模式我的意思是通过一些BIOS中断。并尝试代码不依赖于os n也不依赖于编译器，它可以在windows，linux，unix中也运行在gcc和turbo中

char * ptr =0xA800;

pointer to pixel of screen. it doesnt work normally in program because generally its a text mode.

What I have tried:

to switch to graphics mode its imp to use either int86 or graphics.h (initgraph). pls tell me if there is any other way to switch to graphic mode i mean through some bios interrupts. and pls try that the code does not depend on os n also not on compiler that is it can run in windows,linux,unix also in gcc and turbo both

推荐答案

您正在尝试使用DOS程序使用的古老技术访问视频内存。



除了您正在编写DOS程序并执行它之外，现在它不再起作用了在真正的DOS或DOS模拟器，如DOSBox。如果是这样，您必须使用可以创建DOS程序的编译器，并为DOS提供标准库，如Turbo C.



在图形环境外使用Linux时，您可以使用 Linux framebuffer - 维基百科，免费的百科全书 [ ^ ]访问视频内存。

You are trying to access the video memory using an ancient technology used by DOS programs.

This won't work anymore nowadays besides you are writing a DOS program and executing it in real DOS or an DOS emulator like DOSBox. If so, you must use a compiler that can create DOS programs and provides a standard library for DOS like Turbo C.

When using Linux outside a graphical environment you can use the Linux framebuffer - Wikipedia, the free encyclopedia[^] to access the video memory.

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