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47 lines
2.9 KiB
Plaintext
47 lines
2.9 KiB
Plaintext
--lpm_add_sub CARRY_CHAIN="MANUAL" CARRY_CHAIN_LENGTH=48 DEVICE_FAMILY="MAX7000S" LPM_DIRECTION="ADD" LPM_REPRESENTATION="UNSIGNED" LPM_WIDTH=8 ONE_INPUT_IS_CONSTANT="YES" cin dataa datab result
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--VERSION_BEGIN 13.0 cbx_cycloneii 2013:06:12:18:03:43:SJ cbx_lpm_add_sub 2013:06:12:18:03:43:SJ cbx_mgl 2013:06:12:18:05:10:SJ cbx_stratix 2013:06:12:18:03:43:SJ cbx_stratixii 2013:06:12:18:03:43:SJ VERSION_END
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-- Copyright (C) 1991-2013 Altera Corporation
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-- Your use of Altera Corporation's design tools, logic functions
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-- and other software and tools, and its AMPP partner logic
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-- functions, and any output files from any of the foregoing
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-- (including device programming or simulation files), and any
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-- associated documentation or information are expressly subject
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-- to the terms and conditions of the Altera Program License
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-- Subscription Agreement, Altera MegaCore Function License
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-- Agreement, or other applicable license agreement, including,
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-- without limitation, that your use is for the sole purpose of
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-- programming logic devices manufactured by Altera and sold by
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-- Altera or its authorized distributors. Please refer to the
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-- applicable agreement for further details.
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FUNCTION carry_sum (cin, sin)
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RETURNS ( cout, sout);
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--synthesis_resources = lut 9
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SUBDESIGN add_sub_rnh
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(
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cin : input;
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dataa[7..0] : input;
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datab[7..0] : input;
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result[7..0] : output;
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)
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VARIABLE
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add_sub_cella[7..0] : carry_sum;
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external_cin_cell : carry_sum;
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datab_node[7..0] : WIRE;
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main_cin_wire : WIRE;
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BEGIN
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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)));
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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));
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external_cin_cell.cin = cin;
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external_cin_cell.sin = B"0";
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datab_node[] = datab[];
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main_cin_wire = external_cin_cell.cout;
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result[] = add_sub_cella[].sout;
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END;
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--VALID FILE
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