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-rw-r--r--usrp2/fpga/control_lib/ram_2port.v42
1 files changed, 42 insertions, 0 deletions
diff --git a/usrp2/fpga/control_lib/ram_2port.v b/usrp2/fpga/control_lib/ram_2port.v
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+
+
+module ram_2port
+ #(parameter DWIDTH=32,
+ parameter AWIDTH=9)
+ (input clka,
+ input ena,
+ input wea,
+ input [AWIDTH-1:0] addra,
+ input [DWIDTH-1:0] dia,
+ output reg [DWIDTH-1:0] doa,
+
+ input clkb,
+ input enb,
+ input web,
+ input [AWIDTH-1:0] addrb,
+ input [DWIDTH-1:0] dib,
+ output reg [DWIDTH-1:0] dob);
+
+ reg [DWIDTH-1:0] ram [(1<<AWIDTH)-1:0];
+ integer i;
+ initial
+ for(i=0;i<(1<<AWIDTH);i=i+1)
+ ram[i] <= {AWIDTH{1'b0}};
+
+ always @(posedge clka) begin
+ if (ena)
+ begin
+ if (wea)
+ ram[addra] <= dia;
+ doa <= ram[addra];
+ end
+ end
+ always @(posedge clkb) begin
+ if (enb)
+ begin
+ if (web)
+ ram[addrb] <= dib;
+ dob <= ram[addrb];
+ end
+ end
+endmodule // ram_2port