I now have a two-chip system (ATmega328P + 25LC512 serial EEPROM) that lets me save a working amforth image to serial EEPROM and selectively restore that system to flash on reset. This makes a huge difference in development, since I was forever lancing the kernel and having to drag out the AVR programming dongle. Now, I just hold down the LOAD button on my target, hit reset, and the system is restored to the previous save.
The save_system word copies the full image, including the contents of EEPROM, to flash. So I can extend the dictionary as much as I want; the restored system works just like it did immediately prior to the save. (Warning: This hasn't been extensively tested, but I'm pretty sure it works. :-) ) I've created a set of .asm files that support this system. The serial EEPROM words are compiled into the kernel at build-time and I had to make some changes to the amforth.asm file, so the final image needs at least a '328p to hold the larger bootloader code. Total size, including EEPROM data, is slightly over 11 KB. I can make the .asm files available if anyone is interested... Karl ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev _______________________________________________ Amforth-devel mailing list Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
