Creating a variable to hold an address.


base=$C000


This will give `base` the value of $C000


You can the use base for loading/saving ect.
lda base same as 	 lda $C000
sta base,x same as	 sta $C000,x
inc base same as	 inc $C000


You can give a variable any of the following type.
base=53280		 Decimal
base=123
base=$C000		 Hex
base=$c0
base=%11110000		 8 bit binary value
base=%0000000011111111   16 bit binary value


Also can be used as.

getkey=$ffe4		 rom routine

loop	jsr getkey
	beq loop
	rts


The following are all treaded as immidiate values.
base="A"		 ascii char
base=`A`		 Cbm Screen Display code
base=#123		 immidiate decimal
base=#$05		 immidiate hex
base=#%11001100		 immidiate binary