chapter  4
12 Pages

Memory maps and memory organisation

One line could address two locations (0 and 1), two lines can address four locations (0, 1, 10, 11) and three lines could address eight locations (0, 1, 10, 11, 100, 101, 110, 111), so the rule is:

no. locations addressable = 2number of lines

1 line: 21 locations = 2 2 lines: 22 locations = 4 3 lines: 23 locations = 8

and so: 16 lines: 216 locations = 65536

Since the first address is zero, the address range is zero to 65535 (216 – 1). The address locations are most easily shown on a memory map.