struct MOUSE_DEC {    unsigned char buf[3], phase;    int x, y, btn;};    enable_mouse(&mdec);    for (;;)     {        io_cli();        //无数据则等待        if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) == 0)         {            io_stihlt();        } else         {            if (fifo8_status(&keyfifo) != 0)             {                i = fifo8_get(&keyfifo);                io_sti();                sprintf(s, "%02X", i);                boxfill8(binfo->vram, binfo->scrnx, COL8_008484,  0, 16, 15, 31);                putfonts8_asc(binfo->vram, binfo->scrnx, 0, 16, COL8_FFFFFF, s);            }             //处理鼠标消息            else if (fifo8_status(&mousefifo) != 0)             {                i = fifo8_get(&mousefifo);                io_sti();                if (mouse_decode(&mdec, i) != 0)                 {                    sprintf(s, "[lcr %4d %4d]", mdec.x, mdec.y);                    if ((mdec.btn & 0x01) != 0) //bit0=1                    {                        s[1] = ‘L‘;                    }                    if ((mdec.btn & 0x02) != 0) //bit1=1                    {                        s[3] = ‘R‘;                    }                    if ((mdec.btn & 0x04) != 0) //bit2=1                    {                        s[2] = ‘C‘;                    }                    boxfill8(binfo->vram, binfo->scrnx, COL8_008484, 32, 16, 32 + 15 * 8 - 1, 31);                    putfonts8_asc(binfo->vram, binfo->scrnx, 32, 16, COL8_FFFFFF, s);                    //背景色填充原来的鼠标位置                    boxfill8(binfo->vram, binfo->scrnx, COL8_008484, mx, my, mx + 15, my + 15);                     //更新坐标                    mx += mdec.x;                    my += mdec.y;                    //越界处理                    if (mx < 0) {                        mx = 0;                    }                    if (my < 0) {                        my = 0;                    }                    if (mx > binfo->scrnx - 16) {                        mx = binfo->scrnx - 16;                    }                    if (my > binfo->scrny - 16)                     {                        my = binfo->scrny - 16;                    }                    //输出鼠标坐标                    sprintf(s, "(%3d, %3d)", mx, my);                    //抹掉原坐标                    boxfill8(binfo->vram, binfo->scrnx, COL8_008484, 0, 0, 79, 15);                     putfonts8_asc(binfo->vram, binfo->scrnx, 0, 0, COL8_FFFFFF, s);                     //画出新坐标下的鼠标                    putblock8_8(binfo->vram, binfo->scrnx, 16, 16, mx, my, mcursor, 16);                 }            }        }    }

void HariMain(void){    ...    //COL8_008484为屏幕背景色    init_mouse_cursor8(mcursor, COL8_008484);     ...}void init_mouse_cursor8(char *mouse, char bc){    static char cursor[16][16] = {        "**************..",        "*OOOOOOOOOOO*...",        "*OOOOOOOOOO*....",        "*OOOOOOOOO*.....",        "*OOOOOOOO*......",        "*OOOOOOO*.......",        "*OOOOOOO*.......",        "*OOOOOOOO*......",        "*OOOO**OOO*.....",        "*OOO*..*OOO*....",        "*OO*....*OOO*...",        "*O*......*OOO*..",        "**........*OOO*.",        "*..........*OOO*",        "............*OO*",        ".............***"    };    int x, y;    for (y = 0; y < 16; y++) {        for (x = 0; x < 16; x++) {            if (cursor[y][x] == ‘*‘) {                mouse[y * 16 + x] = COL8_000000;            }            if (cursor[y][x] == ‘O‘) {                mouse[y * 16 + x] = COL8_FFFFFF;            }            if (cursor[y][x] == ‘.‘) {                mouse[y * 16 + x] = bc;  //屏幕背景色            }        }    }    return;}void putblock8_8(char *vram, int vxsize, int pxsize,    int pysize, int px0, int py0, char *buf, int bxsize){    int x, y;    for (y = 0; y < pysize; y++) {        for (x = 0; x < pxsize; x++) {            vram[(py0 + y) * vxsize + (px0 + x)] = buf[y * bxsize + x];        }    }    return;}