Rearrange top signals

src/config.tcl

@@ -12,7 +12,7 @@
 
 # PL_TARGET_DENSITY - You can increase this if Global Placement fails with error GPL-0302.
 # Users have reported that values up to 0.8 worked well for them.
-set ::env(PL_TARGET_DENSITY) 0.89
+set ::env(PL_TARGET_DENSITY) 0.88
 
 # CLOCK_PERIOD - Increase this in case you are getting setup time violations.
 # The value is in nanoseconds, so 20ns == 50MHz.

src/top.sv

@@ -28,10 +28,7 @@ module top (
     output logic hsync,
     output logic vsync,
     output logic next_vertical,
-    output logic next_frame,
-    output logic hblank,
-    output logic vblank,
-    output logic de
+    output logic next_frame
 );
 
     /*
@@ -81,7 +78,7 @@ module top (
                                         };
 
     /*
-        Timing
+        Horizontal and Vertical Timing
     */
 
     logic signed [$clog2(HTOTAL) : 0] counter_h;
@@ -100,6 +97,9 @@ module top (
             end
         end
     end
+
+    logic hblank;
+    logic vblank;
 
     // Horizontal timing
     timing #(
@@ -139,8 +139,6 @@ module top (
         .counter    (counter_v)
     );
 
-    assign de = !(hblank || vblank);
-
     logic [7:0] cur_time;
     logic time_dir;
 

src/tt_um_top_mole99.sv

@@ -25,11 +25,12 @@ module tt_um_top_mole99 (
     logic vsync;
     logic next_vertical;
     logic next_frame;
-    logic de;
+
+    // TODO async reset, sync deassert
 
     top top_inst (
         .clk        (clk),
-        .reset_n    (rst_n && ena),
+        .reset_n    (rst_n && ena), // TODO save gate
 
         // SPI signals
         .spi_sclk   (spi_sclk),
@@ -41,11 +42,8 @@ module tt_um_top_mole99 (
         .rrggbb         (rrggbb),
         .hsync          (hsync),
         .vsync          (vsync),
-        .next_vertical  (next_vertical),  // TODO v_pulse
-        .next_frame     (next_frame),
-        .hblank         (),
-        .vblank         (),
-        .de             (de)
+        .next_vertical  (next_vertical),
+        .next_frame     (next_frame)
     );
 
     logic [1:0] R;
@@ -78,18 +76,21 @@ module tt_um_top_mole99 (
     // Bottom row
     assign uio_out[4] = next_vertical;  assign uio_oe[4] = 1'b1;
     assign uio_out[5] = next_frame;     assign uio_oe[5] = 1'b1;
-    assign uio_out[6] = de;             assign uio_oe[6] = 1'b1;
-    assign uio_out[7] = 1'b0; /*TODO*/  assign uio_oe[7] = 1'b1;
+
+    assign uio_out[6] = 1'b0; assign uio_oe[6] = 1'b0; // - not used
+    assign uio_out[7] = 1'b0; assign uio_oe[7] = 1'b0; // - not used
 
-    // Input PMOD
+    // Input PMOD - not used
 
-    /*ui_in[0]
+    /*
+    ui_in[0]
     ui_in[1]
     ui_in[2]
     ui_in[3]
     ui_in[4]
     ui_in[5]
     ui_in[6]
-    ui_in[7]*/
+    ui_in[7]
+    */
 
 endmodule