ioc_writeb
ioc_writeb (0, IOC_T0LATCH);
ioc_writeb (0, IOC_T0LATCH);
ioc_writeb(RPC_LATCH & 255, IOC_T0LTCHL);
ioc_writeb(RPC_LATCH >> 8, IOC_T0LTCHH);
ioc_writeb(0, IOC_T0GO);
ioc_writeb(ioc_control | ones, IOC_CONTROL);
ioc_writeb(ioc_control | ones, IOC_CONTROL);