Merge branch 'udp'

1 files changed, 26 insertions, 0 deletions

diff --git a/fpga/usrp1/sdr_lib/setting_reg_masked.v b/fpga/usrp1/sdr_lib/setting_reg_masked.v
new file mode 100644
index 000000000..72f7e21eb
--- /dev/null
+++ b/fpga/usrp1/sdr_lib/setting_reg_masked.v
@@ -0,0 +1,26 @@
+
+
+module setting_reg_masked
+  ( input clock, input reset, input strobe, input wire [6:0] addr,
+    input wire [31:0] in, output reg [31:0] out, output reg changed);
+/* upper 16 bits are mask, lower 16 bits are value 
+ * Note that you get a 16 bit register, not a 32 bit one */
+
+   parameter my_addr = 0;
+   
+   always @(posedge clock)
+     if(reset)
+       begin
+	  out <= #1 32'd0;
+	  changed <= #1 1'b0;
+       end
+     else
+       if(strobe & (my_addr==addr))
+	 begin
+	    out <= #1 (out & ~in[31:16]) | (in[15:0] & in[31:16] );
+	    changed <= #1 1'b1;
+	 end
+       else
+	 changed <= #1 1'b0;
+   
+endmodule // setting_reg_masked