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
@Andy: I do the following RAM/DataBUS-Tests: DataBus Test: 1: Walking 1s and Walking 0s RAM Cell Test: 2: writing the whole RAM with 0x55 and read back after writing all the 256k 3: the same as 2nd, but with 0xAA RAM Simple Adress Test: 4: writing the whole ram with Byte 1 of it's 24-bit-adress (for instance: wrting 0x10 to address 0x10A6B2) 5: writing the whole ram with Byte 2 of it's 24-bit-adress (for instance: wrting 0xA6 to address 0x10A6B2) and read back after writing all the 256k 5: writing the whole ram with Byte 3 of it's 24-bit-adress (for instance: wrting 0xB2 to address 0x10A6B2) and read back after writing all the 256k @V K: I guess they are ALL initialized correctly , but I'll check it tomorrow :) Good night, Torsten