I choose CYGNAL C8051F001 for my application. This is 20 MIPS part with 32K of FLASH but only 256B of RAM. My application has two modes of work, calibration mode and RUN mode. Processor is very limited with RAM so I'd like to use the same RAM for different purposes. Calibration is done in the factory and RUN is on the field. They never work together in the same time. How to do that in KEIL C? Thank you, Goran