add_sub_cqb.tdf

dpsk调制编码 vhdl硬件实现

--lpm_add_sub CARRY_CHAIN=MANUAL CARRY_CHAIN_LENGTH=70 DEVICE_FAMILY=Stratix LPM_DIRECTION=SUB LPM_WIDTH=13 dataa datab result
--VERSION_BEGIN 4.0 cbx_lpm_add_sub 2003:11:17:16:32:08:SJ cbx_mgl 2004:01:13:14:00:54:SJ cbx_stratix 2003:12:15:10:23:28:SJ  VERSION_END


--  Copyright (C) 1988-2004 Altera Corporation
--  Any  megafunction  design,  and related netlist (encrypted  or  decrypted),
--  support information,  device programming or simulation file,  and any other
--  associated  documentation or information  provided by  Altera  or a partner
--  under  Altera's   Megafunction   Partnership   Program  may  be  used  only
--  to program  PLD  devices (but not masked  PLD  devices) from  Altera.   Any
--  other  use  of such  megafunction  design,  netlist,  support  information,
--  device programming or simulation file,  or any other  related documentation
--  or information  is prohibited  for  any  other purpose,  including, but not
--  limited to  modification,  reverse engineering,  de-compiling, or use  with
--  any other  silicon devices,  unless such use is  explicitly  licensed under
--  a separate agreement with  Altera  or a megafunction partner.  Title to the
--  intellectual property,  including patents,  copyrights,  trademarks,  trade
--  secrets,  or maskworks,  embodied in any such megafunction design, netlist,
--  support  information,  device programming or simulation file,  or any other
--  related documentation or information provided by  Altera  or a megafunction
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--  licensors. No other licenses, including any licenses needed under any third
--  party's intellectual property, are provided herein.


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

--synthesis_resources = lut 13 
SUBDESIGN add_sub_cqb
( 
	dataa[12..0]	:	input;
	datab[12..0]	:	input;
	result[12..0]	:	output;
) 
VARIABLE 
	add_sub_cella[12..0] : carry_sum;
	main_cin_wire	: WIRE;

BEGIN 
	add_sub_cella[0].cin = (((! datab[0..0]) & main_cin_wire) # (dataa[0..0] & (! (datab[0..0] $ main_cin_wire))));
	add_sub_cella[1].cin = (((! datab[1..1]) & add_sub_cella[0].cout) # (dataa[1..1] & (! (datab[1..1] $ add_sub_cella[0].cout))));
	add_sub_cella[2].cin = (((! datab[2..2]) & add_sub_cella[1].cout) # (dataa[2..2] & (! (datab[2..2] $ add_sub_cella[1].cout))));
	add_sub_cella[3].cin = (((! datab[3..3]) & add_sub_cella[2].cout) # (dataa[3..3] & (! (datab[3..3] $ add_sub_cella[2].cout))));
	add_sub_cella[4].cin = (((! datab[4..4]) & add_sub_cella[3].cout) # (dataa[4..4] & (! (datab[4..4] $ add_sub_cella[3].cout))));
	add_sub_cella[5].cin = (((! datab[5..5]) & add_sub_cella[4].cout) # (dataa[5..5] & (! (datab[5..5] $ add_sub_cella[4].cout))));
	add_sub_cella[6].cin = (((! datab[6..6]) & add_sub_cella[5].cout) # (dataa[6..6] & (! (datab[6..6] $ add_sub_cella[5].cout))));
	add_sub_cella[7].cin = (((! datab[7..7]) & add_sub_cella[6].cout) # (dataa[7..7] & (! (datab[7..7] $ add_sub_cella[6].cout))));
	add_sub_cella[8].cin = (((! datab[8..8]) & add_sub_cella[7].cout) # (dataa[8..8] & (! (datab[8..8] $ add_sub_cella[7].cout))));
	add_sub_cella[9].cin = (((! datab[9..9]) & add_sub_cella[8].cout) # (dataa[9..9] & (! (datab[9..9] $ add_sub_cella[8].cout))));
	add_sub_cella[10].cin = (((! datab[10..10]) & add_sub_cella[9].cout) # (dataa[10..10] & (! (datab[10..10] $ add_sub_cella[9].cout))));
	add_sub_cella[11].cin = (((! datab[11..11]) & add_sub_cella[10].cout) # (dataa[11..11] & (! (datab[11..11] $ add_sub_cella[10].cout))));
	add_sub_cella[12].cin = (((! datab[12..12]) & add_sub_cella[11].cout) # (dataa[12..12] & (! (datab[12..12] $ add_sub_cella[11].cout))));
	add_sub_cella[0].sin = (! (dataa[0..0] $ (datab[0..0] $ main_cin_wire)));
	add_sub_cella[1].sin = (! (dataa[1..1] $ (datab[1..1] $ add_sub_cella[0].cout)));
	add_sub_cella[2].sin = (! (dataa[2..2] $ (datab[2..2] $ add_sub_cella[1].cout)));
	add_sub_cella[3].sin = (! (dataa[3..3] $ (datab[3..3] $ add_sub_cella[2].cout)));
	add_sub_cella[4].sin = (! (dataa[4..4] $ (datab[4..4] $ add_sub_cella[3].cout)));
	add_sub_cella[5].sin = (! (dataa[5..5] $ (datab[5..5] $ add_sub_cella[4].cout)));
	add_sub_cella[6].sin = (! (dataa[6..6] $ (datab[6..6] $ add_sub_cella[5].cout)));
	add_sub_cella[7].sin = (! (dataa[7..7] $ (datab[7..7] $ add_sub_cella[6].cout)));
	add_sub_cella[8].sin = (! (dataa[8..8] $ (datab[8..8] $ add_sub_cella[7].cout)));
	add_sub_cella[9].sin = (! (dataa[9..9] $ (datab[9..9] $ add_sub_cella[8].cout)));
	add_sub_cella[10].sin = (! (dataa[10..10] $ (datab[10..10] $ add_sub_cella[9].cout)));
	add_sub_cella[11].sin = (! (dataa[11..11] $ (datab[11..11] $ add_sub_cella[10].cout)));
	add_sub_cella[12].sin = (! (dataa[12..12] $ (datab[12..12] $ add_sub_cella[11].cout)));
	main_cin_wire = B"1";
	result[] = add_sub_cella[].sout;
END;
--VALID FILE