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https://opencores.org/ocsvn/psg16/psg16/trunk
[/] [psg16/] [trunk/] [rtl/] [verilog/] [PSGToneGenerator.v] - Diff between revs 4 and 5
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| Rev 4 |
Rev 5 |
| Line 27... |
Line 27... |
input rst;
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input rst;
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input clk;
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input clk;
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input ack; // wave table input acknowledge
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input ack; // wave table input acknowledge
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input [11:0] wave; // wave table data input
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input [11:0] wave; // wave table data input
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input test;
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input test;
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input [4:0] vt; // voice type
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input [5:0] vt; // voice type
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input [23:0] freq;
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input [23:0] freq;
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input [23:0] pw; // pulse width
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input [23:0] pw; // pulse width
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input sync;
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input sync;
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input ringmod;
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input ringmod;
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input [31:0] prev_acc; // from previous voice
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input [31:0] prev_acc; // from previous voice
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| Line 76... |
Line 76... |
always @(acc or msb)
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always @(acc or msb)
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outputT <= msb ? ~acc[26:15] : acc[26:15];
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outputT <= msb ? ~acc[26:15] : acc[26:15];
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// Other waveforms, ho-hum
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// Other waveforms, ho-hum
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wire [11:0] outputP = {12{acc[27:16] < pw}};
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wire [11:0] outputP = {12{acc[27:16] < pw}};
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wire [11:0] outputS = acc[27:16];
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wire [11:0] outputS = vt[5] ? ~acc[27:16] : acc[27:16];
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wire [11:0] outputN = lfsr[11:0];
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wire [11:0] outputN = lfsr[11:0];
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wire [11:0] out;
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wire [11:0] out;
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PSGNoteOutMux #(12) u4 (.s(vt), .a(outputT), .b(outputS), .c(outputP), .d(outputN), .e(outputW), .o(out) );
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PSGNoteOutMux #(12) u4 (.s(vt), .a(outputT), .b(outputS), .c(outputP), .d(outputN), .e(outputW), .o(out) );
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assign o = out;
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assign o = out;
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