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authorJosh Blum <josh@joshknows.com>2010-01-22 16:00:45 -0800
committerJosh Blum <josh@joshknows.com>2010-01-22 16:00:45 -0800
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+
+// Model of the Xilinx mult18x18s for signed 18x18 bit multiplies,
+// As in the Spartan 3 series
+
+module MULT18X18S
+ (output reg signed [35:0] P,
+ input signed [17:0] A,
+ input signed [17:0] B,
+ input C, // Clock
+ input CE, // Clock Enable
+ input R // Synchronous Reset
+ );
+
+ always @(posedge C)
+ if(R)
+ P <= 36'sd0;
+ else if(CE)
+ P <= A * B;
+
+endmodule // MULT18X18S