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-rw-r--r--usrp2/fpga/eth/header_ram.v24
1 files changed, 24 insertions, 0 deletions
diff --git a/usrp2/fpga/eth/header_ram.v b/usrp2/fpga/eth/header_ram.v
new file mode 100644
index 000000000..699f16a4f
--- /dev/null
+++ b/usrp2/fpga/eth/header_ram.v
@@ -0,0 +1,24 @@
+
+module header_ram
+ #(parameter REGNUM=0,
+ parameter WIDTH=32)
+ (input clk,
+ input set_stb,
+ input [7:0] set_addr,
+ input [31:0] set_data,
+
+ input [3:0] addr,
+ output [31:0] q
+ );
+
+ reg [WIDTH-1:0] mini_ram[0:15];
+ wire write_to_ram = (set_stb & (set_addr[7:4]==REGNUM[7:4]));
+ wire [3:0] ram_addr = write_to_ram ? set_addr[3:0] : addr;
+
+ always @(posedge clk)
+ if(write_to_ram)
+ mini_ram[ram_addr] <= set_data;
+
+ assign q = mini_ram[ram_addr];
+
+endmodule // header_ram