
PG 16

store data


calculated addr

	      r.1 ---- s ---> data bus
		       |
		       |
		       |
	      ad ----- s ---> address bus
		       |
		       |
		       |
	IC6 ---- X ----+
		       |
	IC7 -----------+





direct addr


	      r.1 ---- s ---> data bus
		       |
		       |
		       |
	      ic ----- s ---> address bus
		       |
		       |
		       |
	IC6 -----------+
		       |
	IC7 -----------+
	