RAM16X1S.v
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// $Header: /root/leakn64/depot/rf/hw/debug/xilinx/RAM16X1S.v,v 1.1 2003/04/01 21:47:36 berndt Exp $
/*
FUNCTION : 16x1 Static RAM with synchronous write capability
*/
`timescale 100 ps / 10 ps
module RAM16X1S (O, A0, A1, A2, A3, D, WCLK, WE);
parameter INIT = 16'h0000;
output O;
input A0, A1, A2, A3, D, WCLK, WE;
reg mem [15:0];
reg [4:0] count;
wire [3:0] adr;
wire d_in, wclk_in, we_in;
buf b_d (d_in, D);
buf b_wclk (wclk_in, WCLK);
buf b_we (we_in, WE);
buf b_a3 (adr[3], A3);
buf b_a2 (adr[2], A2);
buf b_a1 (adr[1], A1);
buf b_a0 (adr[0], A0);
buf b_o (O, o_int);
buf b_o_int (o_int, mem[adr]);
initial
begin
for (count = 0; count < 16; count = count + 1)
mem[count] <= INIT[count];
end
always @(posedge wclk_in)
begin
if (we_in == 1'b1)
mem[adr] <= d_in;
end
specify
if (WE)
(WCLK => O) = (1, 1);
(A3 => O) = (1, 1);
(A2 => O) = (1, 1);
(A1 => O) = (1, 1);
(A0 => O) = (1, 1);
endspecify
endmodule