add_sub_bph.tdf

在quartus开发环境下

--lpm_add_sub CARRY_CHAIN="MANUAL" CARRY_CHAIN_LENGTH=48 DEVICE_FAMILY="Cyclone II" LPM_DIRECTION="ADD" LPM_PIPELINE=1 LPM_REPRESENTATION="SIGNED" LPM_WIDTH=33 aclr clken clock dataa datab result
--VERSION_BEGIN 7.0 cbx_cycloneii 2006:09:29:19:03:26:SJ cbx_lpm_add_sub 2006:10:10:22:03:24:SJ cbx_mgl 2006:10:27:16:08:48:SJ cbx_stratix 2006:09:18:10:47:42:SJ cbx_stratixii 2006:10:13:14:01:30:SJ  VERSION_END


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--synthesis_resources = lut 33 
SUBDESIGN add_sub_bph
( 
	aclr	:	input;
	clken	:	input;
	clock	:	input;
	dataa[32..0]	:	input;
	datab[32..0]	:	input;
	result[32..0]	:	output;
) 
VARIABLE
	pipeline_dffe[32..0]	:	DFFE;
	result_int[32..0]	:	WIRE;
BEGIN 
	result_int[] = dataa[] + datab[];
	pipeline_dffe[].clk = clock;
	pipeline_dffe[].clrn = !aclr;
	pipeline_dffe[].ena = clken;
	result[] = pipeline_dffe[32..0].q;
	pipeline_dffe[32..0].d = result_int[];
END;
--VALID FILE