a_graycounter_o96.tdf

sdram读写

--a_graycounter DEVICE_FAMILY="Cyclone II" WIDTH=10 aclr clock cnt_en q
--VERSION_BEGIN 9.1 cbx_a_gray2bin 2009:10:21:21:22:16:SJ cbx_a_graycounter 2009:10:21:21:22:16:SJ cbx_cycloneii 2009:10:21:21:22:16:SJ cbx_mgl 2009:10:21:21:37:49:SJ cbx_stratix 2009:10:21:21:22:16:SJ cbx_stratixii 2009:10:21:21:22:16:SJ  VERSION_END


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--  and other software and tools, and its AMPP partner logic 
--  functions, and any output files from any of the foregoing 
--  (including device programming or simulation files), and any 
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--  to the terms and conditions of the Altera Program License 
--  Subscription Agreement, Altera MegaCore Function License 
--  Agreement, or other applicable license agreement, including, 
--  without limitation, that your use is for the sole purpose of 
--  programming logic devices manufactured by Altera and sold by 
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--  applicable agreement for further details.



--synthesis_resources = reg 14 
OPTIONS ALTERA_INTERNAL_OPTION = "{-to sub_parity6a0} POWER_UP_LEVEL=HIGH;{-to parity5} POWER_UP_LEVEL=LOW";

SUBDESIGN a_graycounter_o96
( 
	aclr	:	input;
	clock	:	input;
	cnt_en	:	input;
	q[9..0]	:	output;
) 
VARIABLE 
	counter7a[9..0] : dffeas;
	parity5 : dffeas
		WITH (
			power_up = "low"
		);
	sub_parity6a0 : dffeas
		WITH (
			power_up = "high"
		);
	sub_parity6a1 : dffeas;
	sub_parity6a2 : dffeas;
	cntr_cout[9..0]	: WIRE;
	parity_cout	: WIRE;
	sclr	: NODE;
	updown	: NODE;

BEGIN 
	counter7a[].clk = clock;
	counter7a[].clrn = ( (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr), (! aclr));
	counter7a[].d = ( (counter7a[9].q $ cntr_cout[8..8]), (counter7a[8].q $ (counter7a[7].q & cntr_cout[7..7])), (counter7a[7].q $ (counter7a[6].q & cntr_cout[6..6])), (counter7a[6].q $ (counter7a[5].q & cntr_cout[5..5])), (counter7a[5].q $ (counter7a[4].q & cntr_cout[4..4])), (counter7a[4].q $ (counter7a[3].q & cntr_cout[3..3])), (counter7a[3].q $ (counter7a[2].q & cntr_cout[2..2])), (counter7a[2].q $ (counter7a[1].q & cntr_cout[1..1])), (counter7a[1].q $ (counter7a[0].q & cntr_cout[0..0])), ((cnt_en & (counter7a[0].q $ (! parity_cout))) # ((! cnt_en) & counter7a[0].q)));
	counter7a[].sclr = sclr;
	parity5.clk = clock;
	parity5.clrn = (! aclr);
	parity5.d = ((cnt_en & ((sub_parity6a[0..0].q $ sub_parity6a[1..1].q) $ sub_parity6a[2..2].q)) # ((! cnt_en) & parity5.q));
	parity5.sclr = sclr;
	sub_parity6a[2..0].clk = ( clock, clock, clock);
	sub_parity6a[2..1].clrn = (! aclr);
	sub_parity6a[2..0].d = ( ((cnt_en & (counter7a[8..8].q $ counter7a[9..9].q)) # ((! cnt_en) & sub_parity6a[2].q)), ((cnt_en & (((counter7a[4..4].q $ counter7a[5..5].q) $ counter7a[6..6].q) $ counter7a[7..7].q)) # ((! cnt_en) & sub_parity6a[1].q)), ((cnt_en & (((counter7a[0..0].q $ counter7a[1..1].q) $ counter7a[2..2].q) $ counter7a[3..3].q)) # ((! cnt_en) & sub_parity6a[0].q)));
	sub_parity6a[0].prn = (! aclr);
	sub_parity6a[2..0].sclr = ( sclr, sclr, sclr);
	cntr_cout[] = ( B"0", (cntr_cout[7..7] & (! counter7a[7].q)), (cntr_cout[6..6] & (! counter7a[6].q)), (cntr_cout[5..5] & (! counter7a[5].q)), (cntr_cout[4..4] & (! counter7a[4].q)), (cntr_cout[3..3] & (! counter7a[3].q)), (cntr_cout[2..2] & (! counter7a[2].q)), (cntr_cout[1..1] & (! counter7a[1].q)), (cntr_cout[0..0] & (! counter7a[0].q)), (cnt_en & parity_cout));
	parity_cout = ((parity5.q $ (! updown)) & cnt_en);
	q[] = counter7a[].q;
	sclr = GND;
	updown = VCC;
END;
--VALID FILE