diff options
Diffstat (limited to 'control_lib/giantfifo_tb.v')
| -rw-r--r-- | control_lib/giantfifo_tb.v | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/control_lib/giantfifo_tb.v b/control_lib/giantfifo_tb.v deleted file mode 100644 index 87ecd97ae..000000000 --- a/control_lib/giantfifo_tb.v +++ /dev/null @@ -1,173 +0,0 @@ -module fifo_tb(); - - localparam WIDTH = 36; - reg clk, rst; - wire short_full, short_empty, long_full, long_empty, giant_full, giant_empty; - wire casc_full, casc_empty, casc2_full, casc2_empty; - reg read, write; - - wire [WIDTH-1:0] short_do, long_do, casc_do, casc2_do, giant_do; - reg [WIDTH-1:0] di; - - reg clear = 0; - - shortfifo #(.WIDTH(WIDTH)) shortfifo - (.clk(clk),.rst(rst),.datain(di),.dataout(short_do),.clear(clear), - .read(read),.write(write),.full(short_full),.empty(short_empty)); - - longfifo #(.WIDTH(WIDTH), .SIZE(4)) longfifo - (.clk(clk),.rst(rst),.datain(di),.dataout(long_do),.clear(clear), - .read(read),.write(write),.full(long_full),.empty(long_empty)); - - cascadefifo #(.WIDTH(WIDTH), .SIZE(4)) cascadefifo - (.clk(clk),.rst(rst),.datain(di),.dataout(casc_do),.clear(clear), - .read(read),.write(write),.full(casc_full),.empty(casc_empty)); - - cascadefifo2 #(.WIDTH(WIDTH), .SIZE(4)) cascadefifo2 - (.clk(clk),.rst(rst),.datain(di),.dataout(casc2_do),.clear(clear), - .read(read),.write(write),.full(casc2_full),.empty(casc2_empty)); - - wire [17:0] RAM_D; - wire [18:0] RAM_A; - wire RAM_CLK, RAM_WEn, RAM_LDn, RAM_CE1n, RAM_OEn, RAM_CENn; - - giantfifo #(.WIDTH(WIDTH)) giantfifo - (.clk(clk),.rst(rst),.datain(di),.dataout(giant_do),.clear(clear), - .read(read),.write(write),.full(giant_full),.empty(giant_empty), - .RAM_D(RAM_D),.RAM_A(RAM_A),.RAM_CE1n(RAM_CE1n),.RAM_CENn(RAM_CENn), - .RAM_CLK(RAM_CLK),.RAM_WEn(RAM_WEn),.RAM_OEn(RAM_OEn),.RAM_LDn(RAM_LDn) - ); - - wire MODE = 1'b0; - cy1356 ram_model(.d(RAM_D),.clk(RAM_CLK),.a(RAM_A), - .bws(2'b00),.we_b(RAM_WEn),.adv_lb(RAM_LDn), - .ce1b(RAM_CE1n),.ce2(1'b1),.ce3b(1'b0), - .oeb(RAM_OEn),.cenb(RAM_CENn),.mode(MODE) - ); - - initial rst = 1; - initial #1000 rst = 0; - initial clk = 0; - always #50 clk = ~clk; - - initial di = 36'h300AE; - initial read = 0; - initial write = 0; - - always @(posedge clk) - if(write) - di <= di + 1; - - always @(posedge clk) - begin - if(short_full != long_full) - $display("Error: FULL mismatch"); - if(short_empty != long_empty) - $display("Note: EMPTY mismatch, usually not a problem (longfifo has 2 cycle latency)"); - if(read & (short_do != long_do)) - $display("Error: DATA mismatch"); - end - - initial $dumpfile("giantfifo_tb.vcd"); - initial $dumpvars(0,fifo_tb); - - initial - begin - @(negedge rst); - @(posedge clk); - repeat (10) - @(posedge clk); - write <= 1; - @(posedge clk); - write <= 0; - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - read <= 1; - @(posedge clk); - read <= 0; - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - - repeat(10) - begin - write <= 1; - @(posedge clk); - write <= 0; - @(posedge clk); - @(posedge clk); - @(posedge clk); - read <= 1; - @(posedge clk); - read <= 0; - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - end // repeat (10) - - write <= 1; - repeat (4) - @(posedge clk); - write <= 0; - @(posedge clk); - read <= 1; - repeat (4) - @(posedge clk); - read <= 0; - @(posedge clk); - - - write <= 1; - repeat (4) - @(posedge clk); - write <= 0; - @(posedge clk); - repeat (4) - begin - read <= 1; - @(posedge clk); - read <= 0; - @(posedge clk); - end - - write <= 1; - @(posedge clk); - @(posedge clk); - @(posedge clk); - @(posedge clk); - read <= 1; - repeat (5) - @(posedge clk); - write <= 0; - @(posedge clk); - @(posedge clk); - read <= 0; - @(posedge clk); - - write <= 1; - repeat (16) - @(posedge clk); - write <= 0; - @(posedge clk); - - read <= 1; - repeat (16) - @(posedge clk); - read <= 0; - @(posedge clk); - - repeat (10) - @(posedge clk); - $finish; - end -endmodule // longfifo_tb |