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42 lines
862 B
C
42 lines
862 B
C
//
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// Created by longjin on 2022/1/20.
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//
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int *address = (int *)0xffff800000a00000; //帧缓存区的地址
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void show_color_band(int width, int height, char a, char b, char c, char d)
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{
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/** 向帧缓冲区写入像素值
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* @param address: 帧缓存区的地址
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* @param val:像素值
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*/
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for (int i = 0; i < width * height; ++i)
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{
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*((char *)address + 0) = d;
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*((char *)address + 1) = c;
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*((char *)address + 2) = b;
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*((char *)address + 3) = a;
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++address;
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}
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}
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//操作系统内核从这里开始执行
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void Start_Kernel(void)
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{
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show_color_band(1440, 20, 0x00, 0xff, 0x00, 0x00);
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show_color_band(1440, 20, 0x00, 0x00, 0xff, 0x00);
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show_color_band(1440, 20, 0x00, 0x00, 0x00, 0xff);
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show_color_band(1440, 20, 0x00, 0xff, 0xff, 0xff);
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while (1)
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;
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}
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