I have a decent handle on registers and using them. I know R0 -R31 are special memory places optimized for math, logic and so on. I wish to write to a byte some place some where as a "scratch pad" but not use an register. Can I just read / write to 0x32, 0x33 and so on? is there a limit or restriction or a preferred area where I can muck around and not have to use register r0 - r31?
Thank you in advance.