ioc_readb
count1 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8);
status = ioc_readb(IOC_IRQREQA);
count2 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8);
u_int ioc_control = ioc_readb(IOC_CONTROL) & ~(SCL | SDA);
u_int ioc_control = ioc_readb(IOC_CONTROL) & ~(SCL | SDA);
return (ioc_readb(IOC_CONTROL) & SCL) != 0;
return (ioc_readb(IOC_CONTROL) & SDA) != 0;