16-bit memory address is 20, 8086 chips segment address and the offset by the address through the adder calculated, now 64 chip and 8086 chips, also more than 64 64 chip memory address bus?

8086 chip memory address 0 b8000h BFFFFH 0 this is 32 KB memory address, 00000-9 FFFFH is RAM address, along with a variety of ROM, behind the 64 chip design of the same thing?