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[/] [mpmc8/] [trunk/] [rtl/] [mpmc8_set_num_strips.sv] - Blame information for rev 2

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1 2 robfinch
`timescale 1ns / 1ps
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// ============================================================================
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//        __
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//   \\__/ o\    (C) 2015-2022  Robert Finch, Waterloo
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//    \  __ /    All rights reserved.
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//     \/_//     robfinch@finitron.ca
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//       ||
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//
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// BSD 3-Clause License
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this
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//    list of conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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//    this list of conditions and the following disclaimer in the documentation
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//    and/or other materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its
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//    contributors may be used to endorse or promote products derived from
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//    this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ============================================================================
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//
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import mpmc8_pkg::*;
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module mpmc8_set_num_strips(clk, state, ch,
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        we0, we1, we2, we3, we4, we5, we6, we7, num_strips);
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parameter S0 = 3'd7;
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parameter S1 = 3'd1;
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parameter S2 = 3'd0;
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parameter S3 = 3'd0;
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parameter S4 = 3'd0;
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parameter S5 = 3'd3;
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parameter S6 = 3'd0;
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parameter S7 = 3'd3;
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input clk;
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input [3:0] state;
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input [3:0] ch;
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input we0;
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input we1;
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input we2;
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input we3;
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input we4;
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input we5;
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input we6;
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input we7;
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output reg [2:0] num_strips;
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// Setting burst length
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always_ff @(posedge clk)
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if (state==IDLE) begin
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        num_strips <= 3'd0;
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        case(ch)
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        4'd0:   if (!we0) num_strips <= S0;             //7
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        4'd1:   if (!we1)       num_strips <= S1;               //1
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        4'd2:   if (!we2)       num_strips <= S2;
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        4'd3:   if (!we3)       num_strips <= S3;
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        4'd4:   if (!we4)       num_strips <= S4;
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        4'd5:   if (!we5) num_strips <= S5;     //3
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        4'd6:   if (!we6)       num_strips <= S6;
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        4'd7:   if (!we7) num_strips <= S7;
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        default:        ;
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        endcase
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end
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endmodule

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