fifo :Split in blocks

1 files changed, 8 insertions, 2 deletions

diff --git a/fifo.v b/fifo.v
index 5e7a826..b8ddb0f 100644
--- a/fifo.v
+++ b/fifo.v
@@ -36,18 +36,24 @@ always @(posedge clk_i or negedge rst_i) begin
     r_read_addr <= 0;
     r_write_addr <= 0;
   end else if (write_i && read_i) begin
+    r_count <= r_count + 1;
+    r_datastore[r_write_addr] <= data_i;
     // nothing to do
   end else if (write_i && !full_o) begin
     r_count <= r_count + 1;
     r_datastore[r_write_addr] <= data_i;
+  end else if (read_i && !empty_o) begin
+    r_count <= r_count - 1;
+  end
+
+  if (!rst_i) begin
+  end else if (write_i && !full_o) begin
     // the_verilator wrongly (???) assumes DATA_DEPTH-1 requires 1 more bit than it does?
     if ({1'b0, r_write_addr} < (DATA_DEPTH - 1))
       r_write_addr <= r_write_addr + 1;
     else
       r_write_addr <= 0;
   end else if (read_i && !empty_o) begin
-    r_count <= r_count - 1;
-    data_o <= r_datastore[r_read_addr];
     // the_verilator wrongly (???) assumes DATA_DEPTH-1 requires 1 more bit than it does?
     if ({1'b0, r_read_addr} < (DATA_DEPTH - 1))
       r_read_addr <= r_read_addr + 1;