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I am using 2 Boards with the same layout (C167CR-LM, 1MB Flash, 256K RAM) for testing. No my problem is: ----------------- With the first Board downloading the programm in RAM with MON166 using the Bootstrap-Mode works fine. I can start and stop and proceed the programm as often as i want to. With the 2nd Board I can download the programm but after starting it (sometimes immedially after downloading) the connection to the board is lost and sometimes MON166 says: "CANNOT WRITE BREAKPOINT" If I write the programm into the flash on both boards everything works fine. But 'cause both Boards are the same It couldn't be an error in the Config.INC/Start167.a66, could it? Has anybody an idea what the cause could be? (I have already done a RAM-Test but everything seems to be ok) Thanks Torsten
"I perform a RAM & Data Bus Test before i run my application and the Test ends always successfull" What sort of RAM test are you using? Have you tested the test?! It has been known for people to devise memory tests that pass even with no memory chips fitted! See http://www.8052.com/forum/read.phtml?id=39484
See http://www.8052.com/forum/read.phtml?id=39484 One of the first articles I've read before writing the RAM tests 10 Months ago :) Torsten