ds12887 i oec12c887
Of course, the first sentence in my previous post should go like this: It has nothing to do .. and so on ..
Anyhow ..
It looks like you have already done some work on the DS12C887 RTC and 8051 microcontroller ..
Remove the RTC from the PC you have problems with and using the above arrangement write a short program that will read the RTC's memory and send its contnts to another PC (Hyperterminal) ..
Then use new DS12C887, write another piece of code that will write data received via serial port .. and off you go ..
Regards,
IanP