--lpm_add_sub CARRY_CHAIN="MANUAL" CARRY_CHAIN_LENGTH=32 DEVICE_FAMILY="FLEX10K" LPM_DIRECTION="ADD" LPM_REPRESENTATION="UNSIGNED" LPM_WIDTH=8 ONE_INPUT_IS_CONSTANT="YES" cin dataa datab result
--VERSION_BEGIN 5.1 cbx_cycloneii 2005:08:30:10:31:44:SJ cbx_lpm_add_sub 2005:09:30:12:13:06:SJ cbx_mgl 2005:10:09:07:39:04:SJ cbx_stratix 2005:10:07:15:53:08:SJ cbx_stratixii 2005:07:27:05:50:56:SJ  VERSION_END


--  Copyright (C) 1991-2005 Altera Corporation
--  Your use of Altera Corporation's design tools, logic functions 
--  and other software and tools, and its AMPP partner logic 
--  functions, and any output files any of the foregoing 
--  (including device programming or simulation files), and any 
--  associated documentation or information are expressly subject 
--  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 
--  Altera or its authorized distributors.  Please refer to the 
--  applicable agreement for further details.


FUNCTION carry_sum (cin, sin)
RETURNS ( cout, sout);

--synthesis_resources = lut 9 
SUBDESIGN add_sub_fnh
( 
	cin	:	input;
	dataa[7..0]	:	input;
	datab[7..0]	:	input;
	result[7..0]	:	output;
) 
VARIABLE 
	add_sub_cella[7..0] : carry_sum;
	external_cin_cell : carry_sum;
	datab_node[7..0]	: WIRE;
	main_cin_wire	: WIRE;

BEGIN 
	add_sub_cella[].cin = ( ((dataa[7..7] & datab_node[7..7]) # ((dataa[7..7] # datab_node[7..7]) & add_sub_cella[6].cout)), ((dataa[6..6] & datab_node[6..6]) # ((dataa[6..6] # datab_node[6..6]) & add_sub_cella[5].cout)), ((dataa[5..5] & datab_node[5..5]) # ((dataa[5..5] # datab_node[5..5]) & add_sub_cella[4].cout)), ((dataa[4..4] & datab_node[4..4]) # ((dataa[4..4] # datab_node[4..4]) & add_sub_cella[3].cout)), ((dataa[3..3] & datab_node[3..3]) # ((dataa[3..3] # datab_node[3..3]) & add_sub_cella[2].cout)), ((dataa[2..2] & datab_node[2..2]) # ((dataa[2..2] # datab_node[2..2]) & add_sub_cella[1].cout)), ((dataa[1..1] & datab_node[1..1]) # ((dataa[1..1] # datab_node[1..1]) & add_sub_cella[0].cout)), ((dataa[0..0] & datab_node[0..0]) # ((dataa[0..0] # datab_node[0..0]) & main_cin_wire)));
	add_sub_cella[].sin = ( ((dataa[7..7] $ datab_node[7..7]) $ add_sub_cella[6].cout), ((dataa[6..6] $ datab_node[6..6]) $ add_sub_cella[5].cout), ((dataa[5..5] $ datab_node[5..5]) $ add_sub_cella[4].cout), ((dataa[4..4] $ datab_node[4..4]) $ add_sub_cella[3].cout), ((dataa[3..3] $ datab_node[3..3]) $ add_sub_cella[2].cout), ((dataa[2..2] $ datab_node[2..2]) $ add_sub_cella[1].cout), ((dataa[1..1] $ datab_node[1..1]) $ add_sub_cella[0].cout), ((dataa[0..0] $ datab_node[0..0]) $ main_cin_wire));
	external_cin_cell.cin = cin;
	external_cin_cell.sin = B"0";
	datab_node[] = datab[];
	main_cin_wire = external_cin_cell.cout;
	result[] = add_sub_cella[].sout;
END;
--VALID FILE