added memory unit

1 files changed, 31 insertions, 0 deletions

diff --git a/src/ram.v b/src/ram.v
new file mode 100644
index 0000000..b7e4c80
--- /dev/null
+++ b/src/ram.v
@@ -0,0 +1,31 @@
+module ram #(
+  parameter N = 32, 
+  parameter SIZE = 1024
+)(
+    input clk,
+    input rst,
+    input we,
+    input [log2(SIZE)-1:0] addr,
+    input [N-1:0] data_write,
+    output reg [N-1:0] data_read
+);
+
+`include "include/log2.vh"
+
+reg [8:0] ram_block [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;
+  end else begin
+    if (we) begin
+      ram_block[addr] = data_write;
+    end
+    data_read = ram_block[addr];      
+  end
+
+end
+
+endmodule