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memv.syn.v
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/* $Author: karu $ */
/* $LastChangedDate: 2009-03-04 23:09:45 -0600 (Wed, 04 Mar 2009) $ */
/* $Rev: 45 $ */
// Synthesizable memory
// Separate version for the valid bit because of flash clear:
module memv (data_out, addr, data_in, write, clk, rst, createdump, file_id);
output data_out;
input [7:0] addr;
input data_in;
input write;
input clk;
input rst;
input createdump;
input [4:0] file_id;
reg mem [0:255];
integer mcd;
integer i;
assign data_out = (write | rst)? 0 : mem[addr];
always @(posedge clk) begin
if (rst) begin
/*
for (i=0; i<256; i=i+1) begin
mem[i] = 0; // in hardware this would be a special flash-clear wire!
end
*/
end
if (!rst && write) mem[addr] = data_in;
/*
if (!rst && createdump) begin
case (file_id)
0: mcd = $fopen("Icache_0_valid");
8: mcd = $fopen("Dcache_0_valid");
16: mcd = $fopen("Icache_1_valid");
24: mcd = $fopen("Dcache_1_valid");
default: $display("Unknown (v) file_id %d", file_id);
endcase
for (i=0; i<256; i=i+1) begin
$fdisplay(mcd,"%2h %4h", i, mem[i]);
end
$fclose(mcd);
end
*/
end
endmodule
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