Hello everyone! Could anyone explain to me the following: The 8085AH has 3 state signals: S0, S1 and IO/M*. S0 and S1 provide different type of machine cycles depending on their status. For example if the machine cycle is OpCode Fetch, we will get: S1=S0=1 and IO/M*=0. I don't get it though, what do the S1 and S0 signals actually do? I believe the processor decides their status with the help of the instruction decoder, and then what happens? They don't seem to connect to anything! Thank you for your time.