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alfik |
/*
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* Copyright (c) 2014, Aleksander Osman
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* All rights reserved.
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*
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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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* * 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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* * 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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* 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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module sound_opl2(
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input clk,
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input rst_n,
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//sb slave 220h-22Fh
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input [3:0] sb_address,
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input sb_read,
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output [7:0] sb_readdata_from_opl2,
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input sb_write,
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input [7:0] sb_writedata,
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//fm music io slave 388h-389h
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input fm_address,
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input fm_read,
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output [7:0] fm_readdata,
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input fm_write,
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input [7:0] fm_writedata,
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//sample
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output sample_from_opl2,
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output [15:0] sample_from_opl2_value,
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//mgmt slave
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/*
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256.[12:0]: cycles in 80us
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257.[9:0]: cycles in 1 sample: 96000 Hz
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*/
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input [8:0] mgmt_address,
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input mgmt_write,
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input [31:0] mgmt_writedata
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);
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//------------------------------------------------------------------------------
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reg [7:0] io_readdata;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) io_readdata <= 8'h06;
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else io_readdata <= { timer1_overflow | timer2_overflow, timer1_overflow, timer2_overflow, 1'b0, 4'h6 };
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end
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assign sb_readdata_from_opl2 = io_readdata;
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assign fm_readdata = io_readdata;
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//388h reads 06h for OPL2
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//------------------------------------------------------------------------------
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reg [7:0] index;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) index <= 8'd0;
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else if((sb_address == 4'd0 || sb_address == 4'd8) && sb_write) index <= sb_writedata;
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else if(fm_address == 1'd0 && fm_write) index <= fm_writedata;
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end
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wire io_write = (((sb_address == 4'd1 || sb_address == 4'd9) && sb_write) || (fm_address == 1'd1 && fm_write));
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wire [7:0] io_writedata = (sb_write)? sb_writedata : fm_writedata;
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//------------------------------------------------------------------------------ timer 1
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reg [7:0] timer1_preset;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer1_preset <= 8'd0;
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else if(io_write && index == 8'h02) timer1_preset <= io_writedata;
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end
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reg timer1_mask;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer1_mask <= 1'd0;
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else if(io_write && index == 8'h04 && ~(io_writedata[7])) timer1_mask <= io_writedata[6];
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end
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reg timer1_overflow;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer1_overflow <= 1'b0;
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else if(io_write && index == 8'h04 && io_writedata[7]) timer1_overflow <= 1'b0;
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else if(io_write && index == 8'h04 && ~(io_writedata[7]) && io_writedata[6]) timer1_overflow <= 1'b0;
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else if(timer1_active && timer1_sub == 13'd0 && timer1 == 8'hFF && ~(timer1_mask)) timer1_overflow <= 1'b1;
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end
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wire timer1_activate = io_write && index == 8'h04 && ~(io_writedata[7]) && ~(timer1_active) && io_writedata[0];
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reg timer1_active;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer1_active <= 1'd0;
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else if(timer1_activate) timer1_active <= 1'b1;
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else if(io_write && index == 8'h04 && ~(io_writedata[7]) && ~(io_writedata[0])) timer1_active <= 1'b0;
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end
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reg [7:0] timer1;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer1 <= 8'd0;
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else if(timer1_activate) timer1 <= timer1_preset;
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else if(timer1_active && timer1_sub == 13'd0 && timer1 == 8'hFF) timer1 <= timer1_preset;
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else if(timer1_active && timer1_sub == 13'd0) timer1 <= timer1 + 8'd1;
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end
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reg [12:0] timer1_sub;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer1_sub <= 13'd0;
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else if(timer1_activate) timer1_sub <= period_80us;
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else if(timer1_active && timer1_sub > 13'd0) timer1_sub <= timer1_sub - 13'd1;
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else if(timer1_active && timer1_sub == 13'd0) timer1_sub <= period_80us;
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end
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//------------------------------------------------------------------------------ timer 2
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reg [7:0] timer2_preset;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer2_preset <= 8'd0;
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else if(io_write && index == 8'h03) timer2_preset <= io_writedata;
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end
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reg timer2_mask;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer2_mask <= 1'd0;
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else if(io_write && index == 8'h04 && ~(io_writedata[7])) timer2_mask <= io_writedata[5];
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end
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reg timer2_overflow;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer2_overflow <= 1'b0;
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else if(io_write && index == 8'h04 && io_writedata[7]) timer2_overflow <= 1'b0;
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else if(io_write && index == 8'h04 && ~(io_writedata[7]) && io_writedata[5]) timer2_overflow <= 1'b0;
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else if(timer2_active && timer2_sub == 15'd0 && timer2 == 8'hFF && ~(timer2_mask)) timer2_overflow <= 1'b1;
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end
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wire timer2_activate = io_write && index == 8'h04 && ~(io_writedata[7]) && ~(timer2_active) && io_writedata[1];
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reg timer2_active;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer2_active <= 1'd0;
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else if(timer2_activate) timer2_active <= 1'b1;
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else if(io_write && index == 8'h04 && ~(io_writedata[7]) && ~(io_writedata[1])) timer2_active <= 1'b0;
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end
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reg [7:0] timer2;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer2 <= 8'd0;
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else if(timer2_activate) timer2 <= timer2_preset;
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else if(timer2_active && timer2_sub == 15'd0 && timer2 == 8'hFF) timer2 <= timer2_preset;
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else if(timer2_active && timer2_sub == 15'd0) timer2 <= timer2 + 8'd1;
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end
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reg [14:0] timer2_sub;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) timer2_sub <= 15'd0;
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else if(timer2_activate) timer2_sub <= { period_80us, 2'b00 };
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else if(timer2_active && timer2_sub > 15'd0) timer2_sub <= timer2_sub - 15'd1;
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else if(timer2_active && timer2_sub == 15'd0) timer2_sub <= { period_80us, 2'b00 };
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end
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//------------------------------------------------------------------------------ mgmt
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reg [12:0] period_80us;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) period_80us <= 13'd2400;
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else if(mgmt_write && mgmt_address == 9'd256) period_80us <= mgmt_writedata[12:0];
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end
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reg [9:0] period_sample;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) period_sample <= 10'd347;
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else if(mgmt_write && mgmt_address == 9'd257) period_sample <= mgmt_writedata[9:0];
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end
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//------------------------------------------------------------------------------ register write with immediate reaction
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reg await_waveform_select_enable;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) await_waveform_select_enable <= 1'b0;
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else if(io_write && index == 8'h01) await_waveform_select_enable <= io_writedata[5];
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end
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//------------------------------------------------------------------------------ register write with delayed reaction
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reg await_keyboard_split;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) await_keyboard_split <= 1'b0;
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else if(io_write && index == 8'h08) await_keyboard_split <= io_writedata[6];
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end
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reg await_tremolo_depth;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) await_tremolo_depth <= 1'b0;
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else if(io_write && index == 8'hBD) await_tremolo_depth <= io_writedata[7];
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end
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reg await_vibrato_depth;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) await_vibrato_depth <= 1'b0;
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else if(io_write && index == 8'hBD) await_vibrato_depth <= io_writedata[6];
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end
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reg await_rythm;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) await_rythm <= 1'b0;
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else if(io_write && index == 8'hBD) await_rythm <= io_writedata[5];
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end
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//------------------------------------------------------------------------------
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//waveform_select_enable
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//composite_sine_wave
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//enable_bass_drum
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//enable_snare_drum
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//enable_tom_tom
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//enable_cymbal
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//enable_hi_hat
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reg keyboard_split;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) keyboard_split <= 1'b0;
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else if(prepare_cnt_load_regs) keyboard_split <= await_keyboard_split;
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end
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reg tremolo_depth;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) tremolo_depth <= 1'b0;
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else if(prepare_cnt_load_regs) tremolo_depth <= await_tremolo_depth;
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end
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reg vibrato_depth;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) vibrato_depth <= 1'b0;
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else if(prepare_cnt_load_regs) vibrato_depth <= await_vibrato_depth;
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end
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reg rythm;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) rythm <= 1'b0;
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else if(prepare_cnt_load_regs) rythm <= await_rythm;
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end
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//------------------------------------------------------------------------------
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wire prepare_cnt_load_regs = prepare_cnt == 7'd2;
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wire prepare_cnt_sample_1 = prepare_cnt == 7'd114;
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wire prepare_cnt_sample_2 = prepare_cnt == 7'd115;
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wire prepare_cnt_sample_3 = prepare_cnt == 7'd116;
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wire prepare_cnt_sample_4 = prepare_cnt == 7'd117;
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wire prepare_cnt_sample_5 = prepare_cnt == 7'd118;
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wire prepare_cnt_sample_6 = prepare_cnt == 7'd119;
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wire prepare_cnt_sample_7 = prepare_cnt == 7'd120;
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wire prepare_cnt_sample_8 = prepare_cnt == 7'd121;
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wire prepare_cnt_sample_9 = prepare_cnt == 7'd122;
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wire prepare_cnt_sample_10= prepare_cnt == 7'd123;
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wire prepare_cnt_sample_11= prepare_cnt == 7'd124;
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//------------------------------------------------------------------------------
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reg [9:0] sample_cnt;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) sample_cnt <= 10'd0;
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else if(sample_cnt == 10'd0) sample_cnt <= period_sample - 10'd1;
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else sample_cnt <= sample_cnt - 10'd1;
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end
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//------------------------------------------------------------------------------
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reg [6:0] prepare_cnt;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) prepare_cnt <= 7'd0;
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else if(sample_cnt == 10'd1) prepare_cnt <= 7'd1;
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else if(prepare_cnt != 7'd0) prepare_cnt <= prepare_cnt + 7'd1;
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end
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reg [22:0] lfsr;
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always @(posedge clk or negedge rst_n) begin
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if(rst_n == 1'b0) lfsr <= 23'd1;
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else if(prepare_cnt_load_regs) lfsr <= { lfsr[22] ^ lfsr[15] ^ lfsr[14] ^ lfsr[0], lfsr[22:1] };
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end
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//cliping
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//wire [15:0] sample_next = (sample[25] == 1'b0 && sample > 26'h0007FFF)? 26'h0007FFF : (sample[25] == 1'b1 && sample < 26'h3FF8000)? 26'h3FF8000 : sample;
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wire [15:0] sample_next =
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(sample[25] == 1'b0 && sample[24] == 1'b1)? sample[25:10] :
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310 |
|
|
(sample[25] == 1'b0 && sample[23] == 1'b1)? sample[24:9] :
|
311 |
|
|
(sample[25] == 1'b0 && sample[22] == 1'b1)? sample[23:8] :
|
312 |
|
|
(sample[25] == 1'b0 && sample[21] == 1'b1)? sample[22:7] :
|
313 |
|
|
(sample[25] == 1'b0 && sample[20] == 1'b1)? sample[21:6] :
|
314 |
|
|
(sample[25] == 1'b0 && sample[19] == 1'b1)? sample[20:5] :
|
315 |
|
|
(sample[25] == 1'b0 && sample[18] == 1'b1)? sample[19:4] :
|
316 |
|
|
(sample[25] == 1'b0 && sample[17] == 1'b1)? sample[18:3] :
|
317 |
|
|
(sample[25] == 1'b0 && sample[16] == 1'b1)? sample[17:2] :
|
318 |
|
|
(sample[25] == 1'b0 && sample[15] == 1'b1)? sample[16:1] :
|
319 |
|
|
(sample[25] == 1'b1 && sample[24] == 1'b0)? sample[25:10] :
|
320 |
|
|
(sample[25] == 1'b1 && sample[23] == 1'b0)? sample[24:9] :
|
321 |
|
|
(sample[25] == 1'b1 && sample[22] == 1'b0)? sample[23:8] :
|
322 |
|
|
(sample[25] == 1'b1 && sample[21] == 1'b0)? sample[22:7] :
|
323 |
|
|
(sample[25] == 1'b1 && sample[20] == 1'b0)? sample[21:6] :
|
324 |
|
|
(sample[25] == 1'b1 && sample[19] == 1'b0)? sample[20:5] :
|
325 |
|
|
(sample[25] == 1'b1 && sample[18] == 1'b0)? sample[19:4] :
|
326 |
|
|
(sample[25] == 1'b1 && sample[17] == 1'b0)? sample[18:3] :
|
327 |
|
|
(sample[25] == 1'b1 && sample[16] == 1'b0)? sample[17:2] :
|
328 |
|
|
(sample[25] == 1'b1 && sample[15] == 1'b0)? sample[16:1] :
|
329 |
|
|
sample[15:0];
|
330 |
|
|
|
331 |
|
|
reg [25:0] sample;
|
332 |
|
|
always @(posedge clk or negedge rst_n) begin
|
333 |
|
|
if(rst_n == 1'b0) sample <= 26'd0;
|
334 |
|
|
else if(prepare_cnt_sample_1) sample <= { {10{chanval_0[15]}}, chanval_0 };
|
335 |
|
|
else if(prepare_cnt_sample_2) sample <= sample + { {10{chanval_1[15]}}, chanval_1 };
|
336 |
|
|
else if(prepare_cnt_sample_3) sample <= sample + { {10{chanval_2[15]}}, chanval_2 };
|
337 |
|
|
else if(prepare_cnt_sample_4) sample <= sample + { {10{chanval_3[15]}}, chanval_3 };
|
338 |
|
|
else if(prepare_cnt_sample_5) sample <= sample + { {10{chanval_4[15]}}, chanval_4 };
|
339 |
|
|
else if(prepare_cnt_sample_6) sample <= sample + { {10{chanval_5[15]}}, chanval_5 };
|
340 |
|
|
else if(prepare_cnt_sample_7) sample <= sample + { {10{chanval_6[15]}}, chanval_6 };
|
341 |
|
|
else if(prepare_cnt_sample_8) sample <= sample + { {10{chanval_7[15]}}, chanval_7 };
|
342 |
|
|
else if(prepare_cnt_sample_9) sample <= sample + { {10{chanval_8[15]}}, chanval_8 };
|
343 |
|
|
|
344 |
|
|
else if(prepare_cnt_sample_10) sample <= sample_next;
|
345 |
|
|
end
|
346 |
|
|
|
347 |
|
|
assign sample_from_opl2_value = sample[15:0];
|
348 |
|
|
assign sample_from_opl2 = prepare_cnt_sample_11;
|
349 |
|
|
|
350 |
|
|
//------------------------------------------------------------------------------
|
351 |
|
|
|
352 |
|
|
wire rythm_c1;
|
353 |
|
|
wire rythm_c3;
|
354 |
|
|
|
355 |
|
|
wire [15:0] chanval_0;
|
356 |
|
|
wire [15:0] chanval_1;
|
357 |
|
|
wire [15:0] chanval_2;
|
358 |
|
|
wire [15:0] chanval_3;
|
359 |
|
|
wire [15:0] chanval_4;
|
360 |
|
|
wire [15:0] chanval_5;
|
361 |
|
|
wire [15:0] chanval_6;
|
362 |
|
|
wire [15:0] chanval_7;
|
363 |
|
|
wire [15:0] chanval_8;
|
364 |
|
|
|
365 |
|
|
sound_opl2_channel channel_0_inst(
|
366 |
|
|
.clk (clk),
|
367 |
|
|
.rst_n (rst_n),
|
368 |
|
|
|
369 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h20), //input
|
370 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h40), //input
|
371 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h60), //input
|
372 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h80), //input
|
373 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hE0), //input
|
374 |
|
|
|
375 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h23), //input
|
376 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h43), //input
|
377 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h63), //input
|
378 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h83), //input
|
379 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hE3), //input
|
380 |
|
|
|
381 |
|
|
.write_A0h_A8h (io_write && index == 8'hA0), //input
|
382 |
|
|
.write_B0h_B8h (io_write && index == 8'hB0), //input
|
383 |
|
|
.write_C0h_C8h (io_write && index == 8'hC0), //input
|
384 |
|
|
|
385 |
|
|
.writedata (io_writedata), //input [7:0]
|
386 |
|
|
|
387 |
|
|
.vibrato_depth (vibrato_depth), //input
|
388 |
|
|
.tremolo_depth (tremolo_depth), //input
|
389 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
390 |
|
|
.keyboard_split (keyboard_split), //input
|
391 |
|
|
|
392 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
393 |
|
|
|
394 |
|
|
.rythm_enable (1'b0), //input
|
395 |
|
|
.rythm_write (1'b0), //input
|
396 |
|
|
.rythm_bass_drum (1'b0), //input
|
397 |
|
|
.rythm_snare_drum (1'b0), //input
|
398 |
|
|
.rythm_tom_tom (1'b0), //input
|
399 |
|
|
.rythm_cymbal (1'b0), //input
|
400 |
|
|
.rythm_hi_hat (1'b0), //input
|
401 |
|
|
|
402 |
|
|
.channel_6 (1'b0), //input
|
403 |
|
|
.channel_7 (1'b0), //input
|
404 |
|
|
.channel_8 (1'b0), //input
|
405 |
|
|
|
406 |
|
|
/* verilator lint_off PINNOCONNECT */
|
407 |
|
|
.rythm_c1 (), //output / not used
|
408 |
|
|
.rythm_c3 (), //output / not used
|
409 |
|
|
/* verilator lint_on PINNOCONNECT */
|
410 |
|
|
|
411 |
|
|
.rythm_phasebit (1'b0), //input
|
412 |
|
|
.rythm_noisebit (1'b0), //input
|
413 |
|
|
|
414 |
|
|
.chanval (chanval_0) //output [15:0]
|
415 |
|
|
);
|
416 |
|
|
|
417 |
|
|
sound_opl2_channel channel_1_inst(
|
418 |
|
|
.clk (clk),
|
419 |
|
|
.rst_n (rst_n),
|
420 |
|
|
|
421 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h21), //input
|
422 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h41), //input
|
423 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h61), //input
|
424 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h81), //input
|
425 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hE1), //input
|
426 |
|
|
|
427 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h24), //input
|
428 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h44), //input
|
429 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h64), //input
|
430 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h84), //input
|
431 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hE4), //input
|
432 |
|
|
|
433 |
|
|
.write_A0h_A8h (io_write && index == 8'hA1), //input
|
434 |
|
|
.write_B0h_B8h (io_write && index == 8'hB1), //input
|
435 |
|
|
.write_C0h_C8h (io_write && index == 8'hC1), //input
|
436 |
|
|
|
437 |
|
|
.writedata (io_writedata), //input [7:0]
|
438 |
|
|
|
439 |
|
|
.vibrato_depth (vibrato_depth), //input
|
440 |
|
|
.tremolo_depth (tremolo_depth), //input
|
441 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
442 |
|
|
.keyboard_split (keyboard_split), //input
|
443 |
|
|
|
444 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
445 |
|
|
|
446 |
|
|
.rythm_enable (1'b0), //input
|
447 |
|
|
.rythm_write (1'b0), //input
|
448 |
|
|
.rythm_bass_drum (1'b0), //input
|
449 |
|
|
.rythm_snare_drum (1'b0), //input
|
450 |
|
|
.rythm_tom_tom (1'b0), //input
|
451 |
|
|
.rythm_cymbal (1'b0), //input
|
452 |
|
|
.rythm_hi_hat (1'b0), //input
|
453 |
|
|
|
454 |
|
|
.channel_6 (1'b0), //input
|
455 |
|
|
.channel_7 (1'b0), //input
|
456 |
|
|
.channel_8 (1'b0), //input
|
457 |
|
|
|
458 |
|
|
/* verilator lint_off PINNOCONNECT */
|
459 |
|
|
.rythm_c1 (), //output / not used
|
460 |
|
|
.rythm_c3 (), //output / not used
|
461 |
|
|
/* verilator lint_on PINNOCONNECT */
|
462 |
|
|
|
463 |
|
|
.rythm_phasebit (1'b0), //input
|
464 |
|
|
.rythm_noisebit (1'b0), //input
|
465 |
|
|
|
466 |
|
|
.chanval (chanval_1) //output [15:0]
|
467 |
|
|
);
|
468 |
|
|
|
469 |
|
|
sound_opl2_channel channel_2_inst(
|
470 |
|
|
.clk (clk),
|
471 |
|
|
.rst_n (rst_n),
|
472 |
|
|
|
473 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h22), //input
|
474 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h42), //input
|
475 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h62), //input
|
476 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h82), //input
|
477 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hE2), //input
|
478 |
|
|
|
479 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h25), //input
|
480 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h45), //input
|
481 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h65), //input
|
482 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h85), //input
|
483 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hE5), //input
|
484 |
|
|
|
485 |
|
|
.write_A0h_A8h (io_write && index == 8'hA2), //input
|
486 |
|
|
.write_B0h_B8h (io_write && index == 8'hB2), //input
|
487 |
|
|
.write_C0h_C8h (io_write && index == 8'hC2), //input
|
488 |
|
|
|
489 |
|
|
.writedata (io_writedata), //input [7:0]
|
490 |
|
|
|
491 |
|
|
.vibrato_depth (vibrato_depth), //input
|
492 |
|
|
.tremolo_depth (tremolo_depth), //input
|
493 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
494 |
|
|
.keyboard_split (keyboard_split), //input
|
495 |
|
|
|
496 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
497 |
|
|
|
498 |
|
|
.rythm_enable (1'b0), //input
|
499 |
|
|
.rythm_write (1'b0), //input
|
500 |
|
|
.rythm_bass_drum (1'b0), //input
|
501 |
|
|
.rythm_snare_drum (1'b0), //input
|
502 |
|
|
.rythm_tom_tom (1'b0), //input
|
503 |
|
|
.rythm_cymbal (1'b0), //input
|
504 |
|
|
.rythm_hi_hat (1'b0), //input
|
505 |
|
|
|
506 |
|
|
.channel_6 (1'b0), //input
|
507 |
|
|
.channel_7 (1'b0), //input
|
508 |
|
|
.channel_8 (1'b0), //input
|
509 |
|
|
|
510 |
|
|
/* verilator lint_off PINNOCONNECT */
|
511 |
|
|
.rythm_c1 (), //output / not used
|
512 |
|
|
.rythm_c3 (), //output / not used
|
513 |
|
|
/* verilator lint_on PINNOCONNECT */
|
514 |
|
|
|
515 |
|
|
.rythm_phasebit (1'b0), //input
|
516 |
|
|
.rythm_noisebit (1'b0), //input
|
517 |
|
|
|
518 |
|
|
.chanval (chanval_2) //output [15:0]
|
519 |
|
|
);
|
520 |
|
|
|
521 |
|
|
sound_opl2_channel channel_3_inst(
|
522 |
|
|
.clk (clk),
|
523 |
|
|
.rst_n (rst_n),
|
524 |
|
|
|
525 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h28), //input
|
526 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h48), //input
|
527 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h68), //input
|
528 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h88), //input
|
529 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hE8), //input
|
530 |
|
|
|
531 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h2B), //input
|
532 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h4B), //input
|
533 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h6B), //input
|
534 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h8B), //input
|
535 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hEB), //input
|
536 |
|
|
|
537 |
|
|
.write_A0h_A8h (io_write && index == 8'hA3), //input
|
538 |
|
|
.write_B0h_B8h (io_write && index == 8'hB3), //input
|
539 |
|
|
.write_C0h_C8h (io_write && index == 8'hC3), //input
|
540 |
|
|
|
541 |
|
|
.writedata (io_writedata), //input [7:0]
|
542 |
|
|
|
543 |
|
|
.vibrato_depth (vibrato_depth), //input
|
544 |
|
|
.tremolo_depth (tremolo_depth), //input
|
545 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
546 |
|
|
.keyboard_split (keyboard_split), //input
|
547 |
|
|
|
548 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
549 |
|
|
|
550 |
|
|
.rythm_enable (1'b0), //input
|
551 |
|
|
.rythm_write (1'b0), //input
|
552 |
|
|
.rythm_bass_drum (1'b0), //input
|
553 |
|
|
.rythm_snare_drum (1'b0), //input
|
554 |
|
|
.rythm_tom_tom (1'b0), //input
|
555 |
|
|
.rythm_cymbal (1'b0), //input
|
556 |
|
|
.rythm_hi_hat (1'b0), //input
|
557 |
|
|
|
558 |
|
|
.channel_6 (1'b0), //input
|
559 |
|
|
.channel_7 (1'b0), //input
|
560 |
|
|
.channel_8 (1'b0), //input
|
561 |
|
|
|
562 |
|
|
/* verilator lint_off PINNOCONNECT */
|
563 |
|
|
.rythm_c1 (), //output / not used
|
564 |
|
|
.rythm_c3 (), //output / not used
|
565 |
|
|
/* verilator lint_on PINNOCONNECT */
|
566 |
|
|
|
567 |
|
|
.rythm_phasebit (1'b0), //input
|
568 |
|
|
.rythm_noisebit (1'b0), //input
|
569 |
|
|
|
570 |
|
|
.chanval (chanval_3) //output [15:0]
|
571 |
|
|
);
|
572 |
|
|
|
573 |
|
|
sound_opl2_channel channel_4_inst(
|
574 |
|
|
.clk (clk),
|
575 |
|
|
.rst_n (rst_n),
|
576 |
|
|
|
577 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h29), //input
|
578 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h49), //input
|
579 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h69), //input
|
580 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h89), //input
|
581 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hE9), //input
|
582 |
|
|
|
583 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h2C), //input
|
584 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h4C), //input
|
585 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h6C), //input
|
586 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h8C), //input
|
587 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hEC), //input
|
588 |
|
|
|
589 |
|
|
.write_A0h_A8h (io_write && index == 8'hA4), //input
|
590 |
|
|
.write_B0h_B8h (io_write && index == 8'hB4), //input
|
591 |
|
|
.write_C0h_C8h (io_write && index == 8'hC4), //input
|
592 |
|
|
|
593 |
|
|
.writedata (io_writedata), //input [7:0]
|
594 |
|
|
|
595 |
|
|
.vibrato_depth (vibrato_depth), //input
|
596 |
|
|
.tremolo_depth (tremolo_depth), //input
|
597 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
598 |
|
|
.keyboard_split (keyboard_split), //input
|
599 |
|
|
|
600 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
601 |
|
|
|
602 |
|
|
.rythm_enable (1'b0), //input
|
603 |
|
|
.rythm_write (1'b0), //input
|
604 |
|
|
.rythm_bass_drum (1'b0), //input
|
605 |
|
|
.rythm_snare_drum (1'b0), //input
|
606 |
|
|
.rythm_tom_tom (1'b0), //input
|
607 |
|
|
.rythm_cymbal (1'b0), //input
|
608 |
|
|
.rythm_hi_hat (1'b0), //input
|
609 |
|
|
|
610 |
|
|
.channel_6 (1'b0), //input
|
611 |
|
|
.channel_7 (1'b0), //input
|
612 |
|
|
.channel_8 (1'b0), //input
|
613 |
|
|
|
614 |
|
|
/* verilator lint_off PINNOCONNECT */
|
615 |
|
|
.rythm_c1 (), //output / not used
|
616 |
|
|
.rythm_c3 (), //output / not used
|
617 |
|
|
/* verilator lint_on PINNOCONNECT */
|
618 |
|
|
|
619 |
|
|
.rythm_phasebit (1'b0), //input
|
620 |
|
|
.rythm_noisebit (1'b0), //input
|
621 |
|
|
|
622 |
|
|
.chanval (chanval_4) //output [15:0]
|
623 |
|
|
);
|
624 |
|
|
|
625 |
|
|
sound_opl2_channel channel_5_inst(
|
626 |
|
|
.clk (clk),
|
627 |
|
|
.rst_n (rst_n),
|
628 |
|
|
|
629 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h2A), //input
|
630 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h4A), //input
|
631 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h6A), //input
|
632 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h8A), //input
|
633 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hEA), //input
|
634 |
|
|
|
635 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h2D), //input
|
636 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h4D), //input
|
637 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h6D), //input
|
638 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h8D), //input
|
639 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hED), //input
|
640 |
|
|
|
641 |
|
|
.write_A0h_A8h (io_write && index == 8'hA5), //input
|
642 |
|
|
.write_B0h_B8h (io_write && index == 8'hB5), //input
|
643 |
|
|
.write_C0h_C8h (io_write && index == 8'hC5), //input
|
644 |
|
|
|
645 |
|
|
.writedata (io_writedata), //input [7:0]
|
646 |
|
|
|
647 |
|
|
.vibrato_depth (vibrato_depth), //input
|
648 |
|
|
.tremolo_depth (tremolo_depth), //input
|
649 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
650 |
|
|
.keyboard_split (keyboard_split), //input
|
651 |
|
|
|
652 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
653 |
|
|
|
654 |
|
|
.rythm_enable (1'b0), //input
|
655 |
|
|
.rythm_write (1'b0), //input
|
656 |
|
|
.rythm_bass_drum (1'b0), //input
|
657 |
|
|
.rythm_snare_drum (1'b0), //input
|
658 |
|
|
.rythm_tom_tom (1'b0), //input
|
659 |
|
|
.rythm_cymbal (1'b0), //input
|
660 |
|
|
.rythm_hi_hat (1'b0), //input
|
661 |
|
|
|
662 |
|
|
.channel_6 (1'b0), //input
|
663 |
|
|
.channel_7 (1'b0), //input
|
664 |
|
|
.channel_8 (1'b0), //input
|
665 |
|
|
|
666 |
|
|
/* verilator lint_off PINNOCONNECT */
|
667 |
|
|
.rythm_c1 (), //output / not used
|
668 |
|
|
.rythm_c3 (), //output / not used
|
669 |
|
|
/* verilator lint_on PINNOCONNECT */
|
670 |
|
|
|
671 |
|
|
.rythm_phasebit (1'b0), //input
|
672 |
|
|
.rythm_noisebit (1'b0), //input
|
673 |
|
|
|
674 |
|
|
.chanval (chanval_5) //output [15:0]
|
675 |
|
|
);
|
676 |
|
|
|
677 |
|
|
sound_opl2_channel channel_6_inst(
|
678 |
|
|
.clk (clk),
|
679 |
|
|
.rst_n (rst_n),
|
680 |
|
|
|
681 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h30), //input
|
682 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h50), //input
|
683 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h70), //input
|
684 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h90), //input
|
685 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hF0), //input
|
686 |
|
|
|
687 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h33), //input
|
688 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h53), //input
|
689 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h73), //input
|
690 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h93), //input
|
691 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hF3), //input
|
692 |
|
|
|
693 |
|
|
.write_A0h_A8h (io_write && index == 8'hA6), //input
|
694 |
|
|
.write_B0h_B8h (io_write && index == 8'hB6), //input
|
695 |
|
|
.write_C0h_C8h (io_write && index == 8'hC6), //input
|
696 |
|
|
|
697 |
|
|
.writedata (io_writedata), //input [7:0]
|
698 |
|
|
|
699 |
|
|
.vibrato_depth (vibrato_depth), //input
|
700 |
|
|
.tremolo_depth (tremolo_depth), //input
|
701 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
702 |
|
|
.keyboard_split (keyboard_split), //input
|
703 |
|
|
|
704 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
705 |
|
|
|
706 |
|
|
.rythm_enable (rythm), //input
|
707 |
|
|
.rythm_write (io_write && index == 8'hBD), //input
|
708 |
|
|
.rythm_bass_drum (io_writedata[5] && io_writedata[4]), //input
|
709 |
|
|
.rythm_snare_drum (1'b0), //input
|
710 |
|
|
.rythm_tom_tom (1'b0), //input
|
711 |
|
|
.rythm_cymbal (1'b0), //input
|
712 |
|
|
.rythm_hi_hat (1'b0), //input
|
713 |
|
|
|
714 |
|
|
.channel_6 (1'b1), //input
|
715 |
|
|
.channel_7 (1'b0), //input
|
716 |
|
|
.channel_8 (1'b0), //input
|
717 |
|
|
|
718 |
|
|
/* verilator lint_off PINNOCONNECT */
|
719 |
|
|
.rythm_c1 (), //output / not used
|
720 |
|
|
.rythm_c3 (), //output / not used
|
721 |
|
|
/* verilator lint_on PINNOCONNECT */
|
722 |
|
|
|
723 |
|
|
.rythm_phasebit (1'b0), //input
|
724 |
|
|
.rythm_noisebit (1'b0), //input
|
725 |
|
|
|
726 |
|
|
.chanval (chanval_6) //output [15:0]
|
727 |
|
|
);
|
728 |
|
|
|
729 |
|
|
sound_opl2_channel channel_7_inst(
|
730 |
|
|
.clk (clk),
|
731 |
|
|
.rst_n (rst_n),
|
732 |
|
|
|
733 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h31), //input
|
734 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h51), //input
|
735 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h71), //input
|
736 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h91), //input
|
737 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hF1), //input
|
738 |
|
|
|
739 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h34), //input
|
740 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h54), //input
|
741 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h74), //input
|
742 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h94), //input
|
743 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hF4), //input
|
744 |
|
|
|
745 |
|
|
.write_A0h_A8h (io_write && index == 8'hA7), //input
|
746 |
|
|
.write_B0h_B8h (io_write && index == 8'hB7), //input
|
747 |
|
|
.write_C0h_C8h (io_write && index == 8'hC7), //input
|
748 |
|
|
|
749 |
|
|
.writedata (io_writedata), //input [7:0]
|
750 |
|
|
|
751 |
|
|
.vibrato_depth (vibrato_depth), //input
|
752 |
|
|
.tremolo_depth (tremolo_depth), //input
|
753 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
754 |
|
|
.keyboard_split (keyboard_split), //input
|
755 |
|
|
|
756 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
757 |
|
|
|
758 |
|
|
.rythm_enable (rythm), //input
|
759 |
|
|
.rythm_write (io_write && index == 8'hBD), //input
|
760 |
|
|
.rythm_bass_drum (1'b0), //input
|
761 |
|
|
.rythm_snare_drum (io_writedata[5] && io_writedata[3]), //input
|
762 |
|
|
.rythm_tom_tom (1'b0), //input
|
763 |
|
|
.rythm_cymbal (1'b0), //input
|
764 |
|
|
.rythm_hi_hat (io_writedata[5] && io_writedata[0]), //input
|
765 |
|
|
|
766 |
|
|
.channel_6 (1'b0), //input
|
767 |
|
|
.channel_7 (1'b1), //input
|
768 |
|
|
.channel_8 (1'b0), //input
|
769 |
|
|
|
770 |
|
|
.rythm_c1 (rythm_c1), //output
|
771 |
|
|
/* verilator lint_off PINNOCONNECT */
|
772 |
|
|
.rythm_c3 (), //output / not used
|
773 |
|
|
/* verilator lint_on PINNOCONNECT */
|
774 |
|
|
.rythm_phasebit (rythm_c1 | rythm_c3), //input
|
775 |
|
|
.rythm_noisebit (lfsr[22]), //input
|
776 |
|
|
|
777 |
|
|
.chanval (chanval_7) //output [15:0]
|
778 |
|
|
);
|
779 |
|
|
|
780 |
|
|
sound_opl2_channel channel_8_inst(
|
781 |
|
|
.clk (clk),
|
782 |
|
|
.rst_n (rst_n),
|
783 |
|
|
|
784 |
|
|
.write_20h_35h_op1 (io_write && index == 8'h32), //input
|
785 |
|
|
.write_40h_55h_op1 (io_write && index == 8'h52), //input
|
786 |
|
|
.write_60h_75h_op1 (io_write && index == 8'h72), //input
|
787 |
|
|
.write_80h_95h_op1 (io_write && index == 8'h92), //input
|
788 |
|
|
.write_E0h_F5h_op1 (io_write && index == 8'hF2), //input
|
789 |
|
|
|
790 |
|
|
.write_20h_35h_op2 (io_write && index == 8'h35), //input
|
791 |
|
|
.write_40h_55h_op2 (io_write && index == 8'h55), //input
|
792 |
|
|
.write_60h_75h_op2 (io_write && index == 8'h75), //input
|
793 |
|
|
.write_80h_95h_op2 (io_write && index == 8'h95), //input
|
794 |
|
|
.write_E0h_F5h_op2 (io_write && index == 8'hF5), //input
|
795 |
|
|
|
796 |
|
|
.write_A0h_A8h (io_write && index == 8'hA8), //input
|
797 |
|
|
.write_B0h_B8h (io_write && index == 8'hB8), //input
|
798 |
|
|
.write_C0h_C8h (io_write && index == 8'hC8), //input
|
799 |
|
|
|
800 |
|
|
.writedata (io_writedata), //input [7:0]
|
801 |
|
|
|
802 |
|
|
.vibrato_depth (vibrato_depth), //input
|
803 |
|
|
.tremolo_depth (tremolo_depth), //input
|
804 |
|
|
.waveform_select_enable (await_waveform_select_enable), //input
|
805 |
|
|
.keyboard_split (keyboard_split), //input
|
806 |
|
|
|
807 |
|
|
.prepare_cnt (prepare_cnt), //input [6:0]
|
808 |
|
|
|
809 |
|
|
.rythm_enable (rythm), //input
|
810 |
|
|
.rythm_write (io_write && index == 8'hBD), //input
|
811 |
|
|
.rythm_bass_drum (1'b0), //input
|
812 |
|
|
.rythm_snare_drum (1'b0), //input
|
813 |
|
|
.rythm_tom_tom (io_writedata[5] && io_writedata[2]), //input
|
814 |
|
|
.rythm_cymbal (io_writedata[5] && io_writedata[1]), //input
|
815 |
|
|
.rythm_hi_hat (1'b0), //input
|
816 |
|
|
|
817 |
|
|
.channel_6 (1'b0), //input
|
818 |
|
|
.channel_7 (1'b0), //input
|
819 |
|
|
.channel_8 (1'b1), //input
|
820 |
|
|
|
821 |
|
|
/* verilator lint_off PINNOCONNECT */
|
822 |
|
|
.rythm_c1 (), //output / not used
|
823 |
|
|
/* verilator lint_on PINNOCONNECT */
|
824 |
|
|
.rythm_c3 (rythm_c3), //output
|
825 |
|
|
.rythm_phasebit (rythm_c1 | rythm_c3), //input
|
826 |
|
|
.rythm_noisebit (1'b0), //input
|
827 |
|
|
|
828 |
|
|
.chanval (chanval_8) //output [15:0]
|
829 |
|
|
);
|
830 |
|
|
|
831 |
|
|
//------------------------------------------------------------------------------
|
832 |
|
|
|
833 |
|
|
// synthesis translate_off
|
834 |
|
|
wire _unused_ok = &{ 1'b0, sb_read, fm_read, mgmt_writedata[31:13], 1'b0 };
|
835 |
|
|
// synthesis translate_on
|
836 |
|
|
|
837 |
|
|
//------------------------------------------------------------------------------
|
838 |
|
|
|
839 |
|
|
endmodule
|