feedback.abl

自己编写的GAL可编程逻辑电路的编译软件abel4的windows界面

module feedback
title
'Operation of the simulator on devices with feedback
                    DATA I/O Corp.      24 Feb 1983'

	FB1	device 'P16HD8';

	D1,D2,D3	pin 1,2,3;
	F1,F2,F3	pin 13,14,15;

equations

	F1	= D1;
	F2	= D2 & F1;
	F3	= D3 & F2;

test_vectors   ([D1,D2,D3] -> [F1,F2,F3])
		[ 0, 0, 0] -> [ 0, 0, 0];
		[ 1, 1, 1] -> [ 1, 1, 1];
end feedback