RPC_LATCH
ticks = ioc_time + RPC_LATCH - count2;
ticks += RPC_LATCH;
ticks += RPC_LATCH;
ioc_writeb(RPC_LATCH & 255, IOC_T0LTCHL);
ioc_writeb(RPC_LATCH >> 8, IOC_T0LTCHH);
ioc_time += RPC_LATCH;