vga.h

来自「ARM 嵌入式 系统 设计与实例开发 实验教材 二源码」· C头文件 代码 · 共 21 行

/*
 *	Access to VGA videoram
 *
 *	(c) 1998 Martin Mares <[e-mail]>
 */

#ifndef _LINUX_ASM_VGA_H_
#define _LINUX_ASM_VGA_H_

/*
 *	On the PC, we can just recalculate addresses and then
 *	access the videoram directly without any black magic.
 */

#define VGA_MAP_MEM(x) ((unsigned long)0xb0000000 + (unsigned long)(x))

#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))

#endif