SummerCart64/fw/rtl/vendor/lcmxo2/fifo_8kb.sv
2022-09-08 23:36:46 +02:00

48 lines
1.0 KiB
Systemverilog

module fifo_8kb (
input clk,
input reset,
output empty,
output almost_empty,
input read,
output [7:0] rdata,
output full,
output almost_full,
input write,
input [7:0] wdata,
output logic [10:0] count
);
fifo_8kb_lattice_generated fifo_8kb_lattice_generated_inst (
.Data(wdata),
.WrClock(clk),
.RdClock(clk),
.WrEn(write),
.RdEn(read),
.Reset(reset),
.RPReset(reset),
.Q(rdata),
.Empty(empty),
.Full(full),
.AlmostEmpty(almost_empty),
.AlmostFull(almost_full)
);
always_ff @(posedge clk) begin
if (reset) begin
count <= 11'd0;
end else begin
if (write && read) begin
count <= count;
end else if (write) begin
count <= count + 1'd1;
end else if (read) begin
count <= count - 1'd1;
end
end
end
endmodule