I have never used external RAM before (beleive it or not :-o ) . Now I am using an NVRAM from Dallas so that in case of power failure the value of some variables is retained. My question is how do I declare the 'Non Volatile External' variable and how do I retreive the previous (pre-power fail) value ?
Hello, you must declare a static variable (of course without any initialisation). Automatic variables (all variables you "just declare" are automatic) don't survive even leaving the block they was declared in, so how should they survive power off? Have success - Peter