initialize rom to rom/rom.hex

4 files changed, 17 insertions, 7 deletions

diff --git a/rom/rom.hex b/rom/rom.hex
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/rom/rom.hex
diff --git a/src/memory_unit.v b/src/memory_unit.v
index 7eb435b..b07c895 100644
--- a/src/memory_unit.v
+++ b/src/memory_unit.v
@@ -23,7 +23,6 @@ ram #(.N(N), .SIZE(1024)) ram(
 
 rom #(.N(N), .SIZE(1024)) rom(
   .clk(clk),
-  .rst(rst),
   .addr(addr[N-17:0]),
   .data_read(data_read_rom)
 );
diff --git a/src/ram.v b/src/ram.v
index b7e4c80..f92c66f 100644
--- a/src/ram.v
+++ b/src/ram.v
@@ -12,18 +12,18 @@ module ram #(
 
 `include "include/log2.vh"
 
-reg [8:0] ram_block [SIZE-1:0];
+reg [8:0] memory [SIZE-1:0];
 
 integer i;
 always @(posedge clk or posedge rst) begin
   if (rst) begin
     for (i = 0; i < SIZE; i = i + 1)
-      ram_block[i] <= 0;
+      memory[i] <= 0;
   end else begin
     if (we) begin
-      ram_block[addr] = data_write;
+      memory[addr] = data_write;
     end
-    data_read = ram_block[addr];      
+    data_read = memory[addr];
   end
 
 end
diff --git a/src/rom.v b/src/rom.v
index 90a9846..c85335b 100644
--- a/src/rom.v
+++ b/src/rom.v
@@ -3,11 +3,22 @@ module rom #(
   parameter SIZE = 1024
 )(
     input clk,
-    input rst,
     input [log2(SIZE)-1:0] addr,
-    output [N-1:0] data_read
+    output reg [N-1:0] data_read
 );
 
 `include "include/log2.vh"
 
+reg [7:0] memory [SIZE-1:0];
+
+initial begin
+  $readmemh("rom/rom.hex", memory);
+end
+
+always @(posedge clk) begin
+  data_read = memory[addr];
+end
+
+
+
 endmodule