AR_IER
OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
OS_REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
(void) OS_REG_READ(ah, AR_IER); /* flush write to HW */
OS_REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
(void) OS_REG_READ(ah, AR_IER); /* flush write to HW */
OS_REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
OS_REG_READ(ah, AR_IER);
OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
(void) OS_REG_READ(ah, AR_IER);
OS_REG_WRITE(ah, AR_IER, AR_IER_ENABLE);