B2_TI_CRTL
outpw(ADDR(B2_TI_CRTL), TIM_STOP) ;
outpw(ADDR(B2_TI_CRTL), TIM_START) ;
outpw(ADDR(B2_TI_CRTL), TIM_START) ; /* Start timer. */
outpw(ADDR(B2_TI_CRTL), TIM_STOP) ;
outpw(ADDR(B2_TI_CRTL), TIM_CL_IRQ) ;