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[/] [openrisc/] [trunk/] [orpsocv2/] [boards/] [actel/] [ordb1a3pe1500/] [rtl/] [verilog/] [versatile_mem_ctrl/] [rtl/] [verilog/] [fifo.v] - Rev 479
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`include "versatile_mem_ctrl_defines.v" module fifo ( // A side input [35:0] a_dat_i, input a_we_i, input [2:0] a_fifo_sel_i, output [7:0] a_fifo_full_o, input a_clk, // B side output [35:0] b_dat_o, input b_re_i, input [2:0] b_fifo_sel_i, output [7:0] b_fifo_empty_o, input b_clk, // Common input rst ); wire [4:0] wadr0, radr0; wire [4:0] wadr1, radr1; wire [4:0] wadr2, radr2; wire [4:0] wadr3, radr3; wire [4:0] wadr4, radr4; wire [4:0] wadr5, radr5; wire [4:0] wadr6, radr6; wire [4:0] wadr7, radr7; `ifdef PORT0 wire [4:0] wptr0, rptr0; `endif `ifdef PORT1 wire [4:0] wptr1, rptr1; `endif `ifdef PORT2 wire [4:0] wptr2, rptr2; `endif `ifdef PORT3 wire [4:0] wptr3, rptr3; `endif `ifdef PORT4 wire [4:0] wptr4, rptr4; `endif `ifdef PORT5 wire [4:0] wptr5, rptr5; `endif `ifdef PORT6 wire [4:0] wptr6, rptr6; `endif `ifdef PORT7 wire [4:0] wptr7, rptr7; `endif wire [7:0] dpram_a_a, dpram_a_b; // WB#0 `ifdef PORT0 fifo_adr_counter wptr0_cnt ( .q(wptr0), .q_bin(wadr0), .cke(a_we_i & (a_fifo_sel_i==3'h0)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr0_cnt ( .q(rptr0), .q_bin(radr0), .cke(b_re_i & (b_fifo_sel_i==3'h0)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp0 ( .wptr(wptr0), .rptr(rptr0), .fifo_empty(b_fifo_empty_o[0]), .fifo_full(a_fifo_full_o[0]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT0 assign wptr0 = 5'h0; assign wadr0 = 5'h0; assign rptr0 = 5'h0; assign radr0 = 5'h0; assign a_fifo_full_o[0] = 1'b0; assign b_fifo_empty_o[0] = 1'b1; `endif // !`ifdef PORT0 // WB#1 `ifdef PORT1 fifo_adr_counter wptr1_cnt ( .q(wptr1), .q_bin(wadr1), .cke(a_we_i & (a_fifo_sel_i==3'h1)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr1_cnt ( .q(rptr1), .q_bin(radr1), .cke(b_re_i & (b_fifo_sel_i==3'h1)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp1 ( .wptr(wptr1), .rptr(rptr1), .fifo_empty(b_fifo_empty_o[1]), .fifo_full(a_fifo_full_o[1]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT1 assign wptr1 = 5'h0; assign wadr1 = 5'h0; assign rptr1 = 5'h0; assign radr1 = 5'h0; assign a_fifo_full_o[1] = 1'b0; assign b_fifo_empty_o[1] = 1'b1; `endif // !`ifdef PORT1 // WB#2 `ifdef PORT2 fifo_adr_counter wptr2_cnt ( .q(wptr2), .q_bin(wadr2), .cke(a_we_i & (a_fifo_sel_i==3'h2)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr2_cnt ( .q(rptr2), .q_bin(radr2), .cke(b_re_i & (b_fifo_sel_i==3'h2)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp2 ( .wptr(wptr2), .rptr(rptr2), .fifo_empty(b_fifo_empty_o[2]), .fifo_full(a_fifo_full_o[2]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT2 assign wptr2 = 5'h0; assign wadr2 = 5'h0; assign rptr2 = 5'h0; assign radr2 = 5'h0; assign a_fifo_full_o[2] = 1'b0; assign b_fifo_empty_o[2] = 1'b1; `endif // !`ifdef PORT2 // WB#3 `ifdef PORT3 fifo_adr_counter wptr3_cnt ( .q(wptr3), .q_bin(wadr3), .cke(a_we_i & (a_fifo_sel_i==3'h3)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr3_cnt ( .q(rptr3), .q_bin(radr3), .cke(b_re_i & (b_fifo_sel_i==3'h3)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp3 ( .wptr(wptr3), .rptr(rptr3), .fifo_empty(b_fifo_empty_o[3]), .fifo_full(a_fifo_full_o[3]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT3 assign wptr3 = 5'h0; assign wadr3 = 5'h0; assign rptr3 = 5'h0; assign radr3 = 5'h0; assign a_fifo_full_o[3] = 1'b0; assign b_fifo_empty_o[3] = 1'b1; `endif // !`ifdef PORT3 // WB#4 `ifdef PORT4 fifo_adr_counter wptr4_cnt ( .q(wptr4), .q_bin(wadr4), .cke(a_we_i & (a_fifo_sel_i==3'h4)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr4_cnt ( .q(rptr4), .q_bin(radr4), .cke(b_re_i & (b_fifo_sel_i==3'h4)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp4 ( .wptr(wptr4), .rptr(rptr4), .fifo_empty(b_fifo_empty_o[4]), .fifo_full(a_fifo_full_o[4]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT4 assign wptr4 = 5'h0; assign wadr4 = 5'h0; assign rptr4 = 5'h0; assign radr4 = 5'h0; assign a_fifo_full_o[4] = 1'b0; assign b_fifo_empty_o[4] = 1'b1; `endif // !`ifdef PORT4 // WB#5 `ifdef PORT5 fifo_adr_counter wptr5_cnt ( .q(wptr5), .q_bin(wadr5), .cke(a_we_i & (a_fifo_sel_i==3'h5)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr5_cnt ( .q(rptr5), .q_bin(radr5), .cke(b_re_i & (b_fifo_sel_i==3'h5)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp5 ( .wptr(wptr5), .rptr(rptr5), .fifo_empty(b_fifo_empty_o[5]), .fifo_full(a_fifo_full_o[5]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT5 assign wptr5 = 5'h0; assign wadr5 = 5'h0; assign rptr5 = 5'h0; assign radr5 = 5'h0; assign a_fifo_full_o[5] = 1'b0; assign b_fifo_empty_o[5] = 1'b1; `endif // !`ifdef PORT5 // WB#6 `ifdef PORT6 fifo_adr_counter wptr6_cnt ( .q(wptr6), .q_bin(wadr6), .cke(a_we_i & (a_fifo_sel_i==3'h6)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr6_cnt ( .q(rptr6), .q_bin(radr6), .cke(b_re_i & (b_fifo_sel_i==3'h6)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp6 ( .wptr(wptr6), .rptr(rptr6), .fifo_empty(b_fifo_empty_o[6]), .fifo_full(a_fifo_full_o[6]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT6 assign wptr6 = 5'h0; assign wadr6 = 5'h0; assign rptr6 = 5'h0; assign radr6 = 5'h0; assign a_fifo_full_o[6] = 1'b0; assign b_fifo_empty_o[6] = 1'b1; `endif // !`ifdef PORT6 // WB#7 `ifdef PORT7 fifo_adr_counter wptr7_cnt ( .q(wptr7), .q_bin(wadr7), .cke(a_we_i & (a_fifo_sel_i==3'h7)), .clk(a_clk), .rst(rst) ); fifo_adr_counter rptr7_cnt ( .q(rptr7), .q_bin(radr7), .cke(b_re_i & (b_fifo_sel_i==3'h7)), .clk(b_clk), .rst(rst) ); versatile_fifo_async_cmp # ( .ADDR_WIDTH(5) ) cmp7 ( .wptr(wptr7), .rptr(rptr7), .fifo_empty(b_fifo_empty_o[7]), .fifo_full(a_fifo_full_o[7]), .wclk(a_clk), .rclk(b_clk), .rst(rst) ); `else // !`ifdef PORT7 assign wptr7 = 5'h0; assign wadr7 = 5'h0; assign rptr7 = 5'h0; assign radr7 = 5'h0; assign a_fifo_full_o[7] = 1'b0; assign b_fifo_empty_o[7] = 1'b1; `endif // !`ifdef PORT7 assign dpram_a_a = (a_fifo_sel_i==3'd0) ? {a_fifo_sel_i,wadr0} : (a_fifo_sel_i==3'd1) ? {a_fifo_sel_i,wadr1} : (a_fifo_sel_i==3'd2) ? {a_fifo_sel_i,wadr2} : (a_fifo_sel_i==3'd3) ? {a_fifo_sel_i,wadr3} : (a_fifo_sel_i==3'd4) ? {a_fifo_sel_i,wadr4} : (a_fifo_sel_i==3'd5) ? {a_fifo_sel_i,wadr5} : (a_fifo_sel_i==3'd6) ? {a_fifo_sel_i,wadr6} : {a_fifo_sel_i,wadr7} ; assign dpram_a_b = (b_fifo_sel_i==3'd0) ? {b_fifo_sel_i,radr0} : (b_fifo_sel_i==3'd1) ? {b_fifo_sel_i,radr1} : (b_fifo_sel_i==3'd2) ? {b_fifo_sel_i,radr2} : (b_fifo_sel_i==3'd3) ? {b_fifo_sel_i,radr3} : (b_fifo_sel_i==3'd4) ? {b_fifo_sel_i,radr4} : (b_fifo_sel_i==3'd5) ? {b_fifo_sel_i,radr5} : (b_fifo_sel_i==3'd6) ? {b_fifo_sel_i,radr6} : {b_fifo_sel_i,radr7} ; `ifdef ACTEL TwoPortRAM_256x36 dpram ( .WD(a_dat_i), .RD(b_dat_o), .WEN(a_we_i), //.REN(b_re_i), .REN(1'b1), .WADDR(dpram_a_a), .RADDR(dpram_a_b), .WCLK(a_clk), .RCLK(b_clk) ); `else vfifo_dual_port_ram_dc_dw /* # ( .ADDR_WIDTH(8), .DATA_WIDTH(36) )*/ dpram ( .d_a(a_dat_i), .q_a(), .adr_a(dpram_a_a), .we_a(a_we_i), .clk_a(a_clk), .q_b(b_dat_o), .adr_b(dpram_a_b), .d_b(36'h0), .we_b(1'b0), .clk_b(b_clk) ); `endif endmodule // sd_fifo
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