Have connected the serial MCU port to COM2 on the PC using HyperTerminal to communicate. When I enter any key the MCU responds with two non-ascii charaters, which seem to be an 0xE1 and 0x00, followed by the promt '>'. I would expect the command does not get processed by the MCU until the 'Enter' is pressed, but the returned 0xE1 error code indicates 'Command Not Recongnized', and it never waits for an enter. I have downloaded the info describing the Serial Monitor program 'HCS12SerialMon2r1.zip' which seems to be very descriptive, but no clue as to what this problem is.
Message Edited by Frousouna on 05-06-200606:50 PM