yosys/manual/PRESENTATION_ExSyn/memory_02.v

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2014-02-02 15:26:26 -06:00
module test(
input WR1_CLK, WR2_CLK,
input WR1_WEN, WR2_WEN,
input [7:0] WR1_ADDR, WR2_ADDR,
input [7:0] WR1_DATA, WR2_DATA,
input RD1_CLK, RD2_CLK,
input [7:0] RD1_ADDR, RD2_ADDR,
output reg [7:0] RD1_DATA, RD2_DATA
);
reg [7:0] memory [0:255];
always @(posedge WR1_CLK)
if (WR1_WEN)
memory[WR1_ADDR] <= WR1_DATA;
always @(posedge WR2_CLK)
if (WR2_WEN)
memory[WR2_ADDR] <= WR2_DATA;
always @(posedge RD1_CLK)
RD1_DATA <= memory[RD1_ADDR];
always @(posedge RD2_CLK)
RD2_DATA <= memory[RD2_ADDR];
endmodule