Merge branch 'udp'

1 files changed, 33 insertions, 0 deletions

diff --git a/fpga/usrp2/control_lib/wb_ram_dist.v b/fpga/usrp2/control_lib/wb_ram_dist.v
new file mode 100644
index 000000000..cffc2f423
--- /dev/null
+++ b/fpga/usrp2/control_lib/wb_ram_dist.v
@@ -0,0 +1,33 @@
+
+
+module wb_ram_dist
+  #(parameter AWIDTH=8)
+    (input clk_i,
+     input stb_i,
+     input we_i,
+     input [AWIDTH-1:0] adr_i,
+     input [31:0] dat_i,
+     input [3:0] sel_i,
+     output [31:0] dat_o,
+     output ack_o);
+
+   reg [31:0] distram [0:1<<(AWIDTH-1)];
+
+   always @(posedge clk_i)
+     begin
+	if(stb_i & we_i & sel_i[3])
+	  distram[adr_i][31:24] <= dat_i[31:24];
+	if(stb_i & we_i & sel_i[2])
+	  distram[adr_i][24:16] <= dat_i[24:16];
+	if(stb_i & we_i & sel_i[1])
+	  distram[adr_i][15:8] <= dat_i[15:8];
+	if(stb_i & we_i & sel_i[0])
+	  distram[adr_i][7:0] <= dat_i[7:0];
+     end // always @ (posedge clk_i)
+
+   assign dat_o = distram[adr_i];
+   assign ack_o = stb_i;
+
+endmodule // wb_ram_dist
+
+