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Messages - Sunil

#1
Hi,
I have worked on 89c51rd2 & migrating to v51rd2.
Though i had gone thru the migration notes & had incorporated all the changes which were required to be done, I am still facing some problems with the Device programming. During the programming (using Programmer:Super Pro Model (XETEK)), it gives a manufacutre or device id error, which I have been ignoring & going ahead with programming.
The device when programmed works fine but when used in the IAP mode there is a problem.It is not able to save the contents which were programmed duing the runtime. I am using IAP function address 0x1fff and clearing the bit BSE and FCE register lower 2 bit before invoking the IAP routine.Kindly help me as to how to go about using IAP, if i am not using it in right way.

Regards,
Sunil.