AV string implementation

Nexys4Game/src/hdl/AV_bg.v

@@ -0,0 +1,19 @@
+module AV_bg(
+    input clk65,
+    input [10:0] hcount,
+    input [9:0] vcount,
+
+    output reg [11:0] bg_pixel
+
+    );
+
+
+
+    initial bg_pixel <= 12'h8_0_0;
+
+
+
+
+
+
+endmodule

Nexys4Game/src/hdl/AV_note_sprite.v

@@ -0,0 +1,21 @@
+module AV_note_sprite(
+    input clk65,
+    input [10:0] x,
+    input [9:0] y,
+    input [10:0] hcount,
+    input [9:0] vcount,
+    input [4:0] value,
+
+    output reg [12:0] note_pixel
+
+    );
+
+
+
+
+
+    initial note_pixel <= 0;
+
+
+
+endmodule

Nexys4Game/src/hdl/AV_string.v

@@ -0,0 +1,160 @@
+module AV_string
+    #(
+    parameter y_location = 10'b0
+    )
+    (
+    input clk,
+    input [15:0] song_time,
+    input match_en,
+    input [4:0] fret,
+    input [15:0] match_time,
+    input [10:0] hcount,
+    input [9:0] vcount,
+
+    output [12:0] string_pixel
+    );
+
+    reg[54:0] x;
+    reg [49:0] y;
+    reg [24:0] values;
+    wire [64:0] note_pixels;
+
+
+    reg [9:0] y_loc = y_location;
+
+    AV_note_sprite notes [4:0] (
+        .clk65(clk),
+        .x(x),
+        .y(y_loc),
+        .hcount(hcount),
+        .vcount(vcount),
+        .value(values),
+
+        .note_pixel(note_pixels)
+    );
+
+    reg [511:0] note_times;
+    reg [159:0] note_frets;
+
+    initial begin //Mary had a Little Lamb
+    note_times[511:496] = 200;
+    note_frets[159:155] = 4;
+
+    note_times[495:480] = 300;
+    note_frets[154:150] = 2;
+
+    note_times[479:464] = 400;
+    note_frets[149:145] = 0;
+
+    note_times[463:448] = 500;
+    note_frets[144:140] = 2;
+
+    note_times[447:432] = 600;
+    note_frets[139:135] = 4;
+
+    note_times[431:416] = 700;
+    note_frets[134:130] = 4;
+
+    note_times[415:400] = 800;
+    note_frets[129:125] = 4;
+
+    note_times[399:384] = 1000;
+    note_frets[124:120] = 2;
+
+    note_times[383:368] = 1100;
+    note_frets[119:115] = 2;
+
+    note_times[367:352] = 1200;
+    note_frets[114:110] = 2;
+
+    note_times[351:336] = 1400;
+    note_frets[109:105] = 4;
+
+    note_times[335:320] = 1500;
+    note_frets[104:100] = 7;
+
+    note_times[319:304] = 1600;
+    note_frets[99:95] = 7;
+
+    note_times[303:288] = 1800;
+    note_frets[94:90] = 4;
+
+    note_times[287:272] = 1900;
+    note_frets[89:85] = 2;
+
+    note_times[271:256] = 2000;
+    note_frets[84:80] = 0;
+
+    note_times[255:240] = 2100;
+    note_frets[79:75] = 2;
+
+    note_times[239:224] = 2200;
+    note_frets[74:70] = 4;
+
+    note_times[223:208] = 2300;
+    note_frets[69:65] = 4;
+
+    note_times[207:192] = 2400;
+    note_frets[64:60] = 4;
+
+    note_times[191:176] = 2500;
+    note_frets[59:55] = 4;
+
+    note_times[175:160] = 2600;
+    note_frets[54:50] = 2;
+
+    note_times[159:144] = 2700;
+    note_frets[49:45] = 2;
+
+    note_times[143:128] = 2800;
+    note_frets[44:40] = 4;
+
+    note_times[127:112] = 2900;
+    note_frets[39:35] = 2;
+
+    note_times[111:96] = 3000;
+    note_frets[34:30] = 0;
+
+    note_times[95:80] = 0;
+    note_frets[29:25] = 0;
+
+    note_times[79:64] = 0;
+    note_frets[24:20] = 0;
+
+    note_times[51:48] = 0;
+    note_frets[19:15] = 0;
+
+    note_times[47:32] = 0;
+    note_frets[14:10] = 0;
+
+    note_times[31:16] = 0;
+    note_frets[9:5] = 0;
+
+    note_times[15:0] = 0;
+    note_frets[4:0] = 0;
+    end
+
+    always @(posedge clk) begin
+        if( (song_time > note_times[511:496]) && (song_time - note_times[511:496] > 50) ) begin
+        //if the leftmost note is old, and it is older than 500ms, get rid of it
+            note_times[511:0] <= {note_times[495:0] , 16'b0};
+            note_frets[159:0] <= {note_frets[154:0] , 5'b0};
+        end
+
+        //calculate/refresh note-sprite x-values and fret numbers
+        x[54:44] <= (note_times[511:496] + 50 - song_time) / 10;
+        values[24:20] <= note_frets[159:155];
+        x[43:33] <= (note_times[495:480] + 50 - song_time) / 10;
+        values[19:15] <= note_frets[154:150];
+        x[32:22] <= (note_times[479:464] + 50 - song_time) / 10;
+        values[14:10] <= note_frets[149:145];
+        x[21:11] <= (note_times[463:448] + 50 - song_time) / 10;
+        values[9:5] <= note_frets[144:140];
+        x[10:0] <= (note_times[447:432] + 50 - song_time) / 10;
+        values[4:0] <= note_frets[139:135];
+
+    end
+    //OR all the pixel bits together. Shoddy practice, could be improved
+    assign string_pixel = note_pixels[64:52]|note_pixels[51:39]|note_pixels[38:26]|note_pixels[25:13]|note_pixels[12:0];
+
+endmodule