taglinefilesource code
dy48include/linux/mouse.hint    dy;  
dy35kernel/chr_drv/mouse.cchar dx, dy, buttons;
dy46kernel/chr_drv/mouse.cdy = (inb(MSE_DATA_PORT) & 0xf);
dy51kernel/chr_drv/mouse.cdy |= (buttons & 0xf) << 4;
dy57kernel/chr_drv/mouse.cmouse.dy += dy;
dy84kernel/chr_drv/mouse.cmouse.dy = 0;  
dy118kernel/chr_drv/mouse.cif (mouse.dy < -127) mouse.dy = -127;
dy119kernel/chr_drv/mouse.cif (mouse.dy >  127) mouse.dy =  127;
dy121kernel/chr_drv/mouse.cput_fs_byte((char) -mouse.dy, buffer + 2);
dy127kernel/chr_drv/mouse.cmouse.dy = 0;
dy179kernel/chr_drv/mouse.cmouse.dy = 0;