When c8051f02x 's I/O ports is configured to opendrain ,can see the outputting value in the peripherals I/O_ports when debugging?
The question is ,can it display when running the command : XBYTE[0X8000] = 0X55;//EMIF is configure to P4~P7 I guess you are asking: "can I see the data being written to 0x8000 in P7, the answer is no. See "the bible" chapter 3. Erik