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How hard is it to rewrite the flash EEPROM to add monitor functions or firmware?

April 26, 2017EEPROM firmware Flash functions hard monitor rewrite

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How hard is it to rewrite the flash EEPROM to add monitor functions or firmware?

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(h) The FLASH can be programmed in-system. There is a small utility that erases and reprograms the FLASH. A copy of the source code for the current version of this utility is on my web site: http://www.hartetec.com/computers/s100/s1002isa/index.html To use this utility, you load the code that you want burned into the FLASH into RAM using DDT or SID or ZSID and then run “flashpro” which detects the FLASH type and runs the programming algorithm. I plan to make this program more user-friendly by allowing the user to specify the file to write, so that they don’t have to do the loading with a debugger first.