73 lines
2.1 KiB
Plaintext
73 lines
2.1 KiB
Plaintext
--------------------------------------------------------------------
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--
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-- LPM_BUSTRI Parameterized Megafunction
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--
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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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--
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-- Quartus II 13.1.0 Build 162 10/23/2013
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--
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-- Version 2.0
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--
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--------------------------------------------------------------------
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SUBDESIGN lpm_bustri_LONG
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(
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tridata[32-1..0] : BIDIR;
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data[32-1..0] : INPUT = VCC;
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enabletr : INPUT = VCC;
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enabledt : INPUT = VCC;
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result[32-1..0] : OUTPUT;
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)
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VARIABLE
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% Are the enable inputs used? %
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IF (USED(enabledt)) GENERATE
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dout[32-1..0] : TRI;
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END GENERATE;
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IF (USED(enabletr)) GENERATE
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din[32-1..0] : TRI;
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END GENERATE;
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BEGIN
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ASSERT (32 > 0)
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REPORT "Value of 32 parameter value must be greater than 0"
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SEVERITY ERROR
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HELP_ID LPM_BUSTRI_WIDTH;
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ASSERT (USED(enabledt) & USED(data))
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REPORT "lpm_bustri function requires data[] port -- Altera recommends using the TRI primitive instead"
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SEVERITY ERROR
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HELP_ID LPM_BUSTRI_DATA;
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% Connect buffers if they are used %
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IF (USED(enabledt)) GENERATE
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dout[].oe = enabledt;
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dout[] = data[];
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tridata[] = dout[];
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END GENERATE;
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IF (USED(enabletr)) GENERATE
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din[].oe = enabletr;
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din[] = tridata[];
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result[] = din[];
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ELSE GENERATE
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result[] = tridata[];
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END GENERATE;
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IF !USED(result) GENERATE
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result[] = GND;
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END GENERATE;
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END;
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