I8042_CMD_CTL_RCTR
if (i8042_command(&i8042_ctr, I8042_CMD_CTL_RCTR)) {
if (i8042_command(&ctr[n++ % 2], I8042_CMD_CTL_RCTR)) {
if (i8042_command(¶m, I8042_CMD_CTL_RCTR))