i am a newbie in embedded systems and i have some questions about my board Cobra5272 that uses a coldfire mcf5272 cpu core.
in the official CD of cobra5272 is said that : "The COBRA5272 module has a 2 MByte Flash memory which is used for nonvolatile storage of both the user programs and the dBUG debugger/monitor in the lower 256KByte. The 2 MByte Flash memory is 16 Bit wide and is organized as 16 bit x 1M. The MCF5272 microprocessor has 4 kByte internal SRAM, which is organized as 1kx 32 bit. This SRAM can be used for storing data or instructions." but there is this table too: [image: Inline image 1] <https://mail.google.com/mail/u/1/?ui=2&ik=50fffa5592&view=fimg&th=1499dec9aab11f65&attid=0.1&disp=emb&realattid=ii_1499dd976f70664a&attbid=ANGjdJ-HmJIETTBHMzp8ms5jGyPbhGfzRYvAEGFROirJoaMoyCe95dbtT-2_NM9keizeuUrYJwfjSwyLdvN1f9d39MjV3fR9N5Neq8OQ4gzx2KQHhXOy9z6_iECBvDg&sz=w1600-h1000&ats=1415695707289&rm=1499dec9aab11f65&zw&atsh=1> so i got confused! is the dBug rom monitor saved in SDRAM or FLASH??????? when i download a s-record file of my own program into this target via serial port (dBug and command 'dn' ) this file saves into the SDRAM or FALSH? if i want not to damage the dBug program of my board accidentally, i must download the code in SDRAM or FLASH memory? if i use Freescale Codewarrior software for writing my codes and programs, does it make me some s-record files for downloading into the target and executing it? the fact is that I designed a carrier board with one flash, some RAMs, buffers,etc. for Cobra but I don't know how to realize that the connection between cpu on Cobra (MCF5272) and flash memory on my carrier board is right or not? Technically I should write a simple code on Cobar cpu that send a small data on Carrier flash and receive data from it to ensure the systems works well in reading and writing data on flash. am i in a right way? is it possible to load my Codewarrior to the target and execute it? thank you
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