Re: Any body have moving message display circuit using P8049
P8049 doesn’t have UART so if the circuit has a serial port it is most likely done by bit banging ..
To learn what it’s doing there step-by-step you have to read the contents of the EPROM (2732) ..
Once you have the HEX file you can try to disassemble it and find out how the user data is handled; it’s also possible that this circuit is based on a fixed message(s) and that it resides in the EPROM, but, .. you have to read it (2732) first ..
Rgds,
IanP