Intel 386 manual Nanosecond Eprom Timing Diagram

		EPROM	READ	NON-PIPELINED	EPROM	READ	NON-PIPEUNED	I
		IIDLElnlT2	nlT2IT2!T21T2		T112	nln T2JT2 T2		11 I T. I T2 I T2 I T2 I T2
	CLK'
	PCLK
	ADS#
	ADDR	~		~.-		. _ ---		~
	ALEIO	~
	EPRD#	\		/	\			/
	TIMEDLY			\	/		\	/
~
	TRIOEN	\		/	\			/
o
	DT_R~
	DATA			READ			READ	)
	NA#
	B516#	\		/	~			/
	BUSCYC	\		f\				1\'---__
	IQRDY#			'----./.			~

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Figure 6-5. 250 Nanosecond EPROM Timing Diagram