Micro­power

WAVEFORM DIAGRAMS

2 MHZ VERSION:

4 MHZ VERSION:

NOTES	1,2,3,4	–DIFFERENT STARTS OF Z-80 ACCESS CYCLE WITH RESPECT TO 1 MHZ
		–THIS POINT IN TIME THAT THE ‘WAIT’ SIGNAL IS SAMPLED BY THE Z-80
	*	–EFFECT OF ADDING CAPACITOR TO EXTEND WRITE ACCESS – NOT NORMALLY NEEDED
	↑	–THIS ENSURES THAT ‘WAITS’ GENERATED FROM DIFFERENT SOURCES DO NOT DISTURB THIS SYNCHRONISATION LOGIC.
	#	–THIS ‘PRELIMINARY PULSE ON RVSEL HAS NO EFFECT SINCE CYCLE IS NOT COMPLETE, IT IS DURING AN UNUSED PROCESSOR ACCESS ‘SLOT’, AND THERE IS NO CORRESPONDING WRITE GATE WVSEL