diff options
Diffstat (limited to 'picorv32/scripts/tomthumbtg/testbench.v')
-rw-r--r-- | picorv32/scripts/tomthumbtg/testbench.v | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/picorv32/scripts/tomthumbtg/testbench.v b/picorv32/scripts/tomthumbtg/testbench.v deleted file mode 100644 index c39ebca..0000000 --- a/picorv32/scripts/tomthumbtg/testbench.v +++ /dev/null @@ -1,83 +0,0 @@ -`timescale 1 ns / 1 ps - -module testbench; - reg clk = 1; - reg resetn = 0; - wire trap; - - always #5 clk = ~clk; - - initial begin - repeat (100) @(posedge clk); - resetn <= 1; - end - - wire mem_valid; - wire mem_instr; - reg mem_ready; - wire [31:0] mem_addr; - wire [31:0] mem_wdata; - wire [3:0] mem_wstrb; - reg [31:0] mem_rdata; - - picorv32 #( - .TWO_STAGE_SHIFT(`TWO_STAGE_SHIFT), - .BARREL_SHIFTER(`BARREL_SHIFTER), - .TWO_CYCLE_COMPARE(`TWO_CYCLE_COMPARE), - .TWO_CYCLE_ALU(`TWO_CYCLE_ALU) - ) uut ( - .clk (clk ), - .resetn (resetn ), - .trap (trap ), - .mem_valid (mem_valid ), - .mem_instr (mem_instr ), - .mem_ready (mem_ready ), - .mem_addr (mem_addr ), - .mem_wdata (mem_wdata ), - .mem_wstrb (mem_wstrb ), - .mem_rdata (mem_rdata ) - ); - - reg [31:0] memory [0:16*1024-1]; - reg [1023:0] hex_filename; - - initial begin - if ($value$plusargs("hex=%s", hex_filename)) - $readmemh(hex_filename, memory); - end - - initial begin - // $dumpfile("testbench.vcd"); - // $dumpvars(0, testbench); - end - - always @(posedge clk) begin - if (resetn && trap) begin - repeat (10) @(posedge clk); - $display("TRAP"); - $stop; - end - end - - always @(posedge clk) begin - mem_ready <= 0; - if (mem_valid && !mem_ready) begin - mem_ready <= 1; - if (mem_addr == 32'h 1000_0000) begin - if (mem_wdata != -32'd1) begin - $display("Failed test case: %d", mem_wdata); - $stop; - end else begin - $display("OK."); - $finish; - end - end else begin - mem_rdata <= memory[mem_addr >> 2]; - if (mem_wstrb[0]) memory[mem_addr >> 2][ 7: 0] <= mem_wdata[ 7: 0]; - if (mem_wstrb[1]) memory[mem_addr >> 2][15: 8] <= mem_wdata[15: 8]; - if (mem_wstrb[2]) memory[mem_addr >> 2][23:16] <= mem_wdata[23:16]; - if (mem_wstrb[3]) memory[mem_addr >> 2][31:24] <= mem_wdata[31:24]; - end - end - end -endmodule |