clock

interne clcok toegevoegd aan de vga modules. niks is veranderd aan de PLUT want die werkt nog steeds op dezelfde SYSCLK.

1 files changed, 56 insertions, 53 deletions

diff --git a/basys3/basys3.srcs/ppu_vga_native.vhd b/basys3/basys3.srcs/ppu_vga_native.vhd
index b337786..f5d9809 100644
--- a/basys3/basys3.srcs/ppu_vga_native.vhd
+++ b/basys3/basys3.srcs/ppu_vga_native.vhd
@@ -50,6 +50,7 @@ architecture Behavioral of ppu_vga_native is
   signal ram_x1: line_buffer; -- buffer 1
   signal hcount: STD_LOGIC_VECTOR(9 downto 0):= (others => '0');
   signal vcount: STD_LOGIC_VECTOR(9 downto 0):= (others => '0');
+  signal clkCounter: STD_LOGIC_VECTOR(1 downto 0):= (others => '0');
   signal rgb_out :  STD_LOGIC_VECTOR(11 downto 0):= (others => '0'); -- output colors
   signal px : integer; -- conversion for hcount
   signal py :integer; -- conversion for vcount
@@ -60,63 +61,65 @@ begin
         variable v_x : integer ; -- integer to hold vector X
     begin
         if rising_edge(clk) then
-
-              v_x := TO_INTEGER(unsigned(x) - 72);
-              if(v_x >= 0 and v_x < 320 and PREADY = '1') then
-                 if(y(0) = '0') then
-                    ram_x0(v_x) <= RI & GI & BI;
-                    if v_x = 319 then
-                        bufferFilledOnbuffer0 <= TO_INTEGER(unsigned(y) - 14);
-                    end if;
-                else
-                    ram_x1(v_x) <= RI & GI & BI;
-                    if v_x = 319 then
-                        bufferFilledOnbuffer1 <= TO_INTEGER(unsigned(y) - 14);
+            clkCounter <= clkCounter + 1;
+            if(clkCounter = "11")then
+                  v_x := TO_INTEGER(unsigned(x) - 72);
+                  if(v_x >= 0 and v_x < 320 and PREADY = '1') then
+                     if(y(0) = '0') then
+                        ram_x0(v_x) <= RI & GI & BI;
+                        if v_x = 319 then
+                            bufferFilledOnbuffer0 <= TO_INTEGER(unsigned(y) - 14);
+                        end if;
+                    else
+                        ram_x1(v_x) <= RI & GI & BI;
+                        if v_x = 319 then
+                            bufferFilledOnbuffer1 <= TO_INTEGER(unsigned(y) - 14);
+                        end if;
+                    end if;          
+                 end if;     
+                -- T display(display data)     
+                if (hcount >= 144) and (hcount < 784) and (vcount >= 31) and (vcount < 511) then
+                    px <= TO_INTEGER(unsigned(hcount) - 144); 
+                    py <= TO_INTEGER(unsigned(vcount) - 31);   
+                    if(bufferFilledonBuffer0 = (py/2)) then
+                        rgb_out <= ram_x0(px/2);
+                    elsif(bufferFilledonbuffer1 = (py/2)) then
+                        rgb_out <= ram_x1(px/2); 
+                
+                    else
+                        rgb_out <= (others => '0');
+                
                     end if;
-                end if;          
-             end if;     
-            -- T display(display data)     
-            if (hcount >= 144) and (hcount < 784) and (vcount >= 31) and (vcount < 511) then
-                px <= TO_INTEGER(unsigned(hcount) - 144); 
-                py <= TO_INTEGER(unsigned(vcount) - 31);   
-                if(bufferFilledonBuffer0 = (py/2)) then
-                    rgb_out <= ram_x0(px/2);
-                elsif(bufferFilledonbuffer1 = (py/2)) then
-                    rgb_out <= ram_x1(px/2); 
-
-                else
-                    rgb_out <= (others => '0');
-
+                end if;
+                -- pulse width
+                hsync <= '1';
+                if hcount < 97 then
+                    hsync <= '0';
+                end if;
+                
+                vsync <= '1';
+                if vcount < 3 then
+                    vsync <= '0';
+                end if;
+                
+                -- sync pulse time
+                hcount <= hcount + 1;
+                
+                if hcount = 800 then
+                    vcount <= vcount + 1;
+                    hcount <= (others => '0');
+                end if;
+                
+                if vcount = 521 then
+                    vcount <= (others => '0');
                 end if;
             end if;
-            -- pulse width
-            hsync <= '1';
-            if hcount < 97 then
-                hsync <= '0';
-            end if;
-
-            vsync <= '1';
-            if vcount < 3 then
-                vsync <= '0';
-            end if;
-
-            -- sync pulse time
-            hcount <= hcount + 1;
-
-            if hcount = 800 then
-                vcount <= vcount + 1;
-                hcount <= (others => '0');
-            end if;
-
-            if vcount = 521 then
-                vcount <= (others => '0');
-            end if;
-
+            
+            -- output colors
+        RO <= rgb_out(11 downto 8);
+        GO <= rgb_out(7 downto 4);
+        BO <= rgb_out(3 downto 0);
         end if;
-        -- output colors
-    RO <= rgb_out(11 downto 8);
-    GO <= rgb_out(7 downto 4);
-    BO <= rgb_out(3 downto 0);
     end process;
 
 end Behavioral;