ADR	HEXADR	NAME	Description	shadow of	OS
647	$0287	STRIG3	Stick 4 Trigger	TRIG3	OS A and B

only on 400 and 800 machines, else a copy of STRIG1. This address is only updated every 1/50 second during VBlank!

0 when trigger pressed

1 when trigger released

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see also: Controller topics, Latch triggers

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