Hi,
I have data flowing from an industrial controller to a master.Intel '51 mode 3 is used ,19200Bd. The protocol contains mnemonics associated to data.Mnemonics are like this one: EMTP
I have to synchronize in some way with the data flow and filter out EMTP and its associated data (nEMTPxxxx where n is 1 to 5 and xxxx 0 to 9999)

While I am able to extract data directly from the industrial controller via serial channel and put it into a buffer of my 89C4051... I don't know how to enter into the data stream between industrial controller and its master.
Do I need a ring buffer?...do I have enough time to capture data,examine (compare it with EMTP)?
Xtal:22.118MHz.

Any good solution ?

ETX LF CR

ed