//------------------------------------------- test.v 文件的开始 ----------------------------------------------------- /*********************************************************************** *** 模块功能：test模块通过运行5个不同的汇编程序对cpu模块进行完整的逻辑测试 *** 和验证。仿真程序在加栽后会自动执行，运行的结果在人机交互的显示 *** 屏上显示。本模块是不可综合的行为模块，用于对CPU模块进行RTL级和 *** 门级逻辑功能的全面仿真验证。 ************************************************************************/ `include "cpu.v" `include "rom.v" `include "ram.v" `include "decoder.v" `timescale 1ns/1ns module test; reg clk; reg reset_n; wire wr; wire rd; wire halt; wire [12:0] addr; wire [15:0] rddata; wire rom1_sel; wire ram1_sel; wire [15:0] rom1_data; wire [15:0] ram1_data; reg [23:0] mnemonic; reg [12:0] ip_status; wire [1:0] cpu_status; integer test; integer i; parameter S0=2'd0, S1=2'd1, S2=2'd2, S3=2'd3; assign cpu_status=cpu1.state; always #50 clk=~clk; always@(cpu1.opcode) case(cpu1.opcode) 3'd0: mnemonic 3'd1: mnemonic 3'd2: mnemonic 3'd3: mnemonic 3'd4: mnemonic 3'd5: mnemonic 3'd6: mnemonic 3'd7: mnemonic default: mnemonic endcase always@(posedge halt) begin #250; $display("\n**********************************************"); $display("**A halt instruction has been processed!!!"); $display("************************************************"); end always@(posedge clk) begin: MONITOR case(test) 1: begin case(cpu1.state) S0: ip_status S1: $strobe("%t %s %h %h %h ", $time, mnemonic, ip_status,addr,rddata); endcase end 2: begin case(cpu1.state) S0: ip_status S1: $strobe("%t %s %h %h %h", $time, mnemonic, ip_status,addr,rddata); endcase end 3:begin $display("\n*** RUNNING CPUtest3 - An Executable Program ***"); $display("*** This program should calculate the fibonacci ***"); $display("\n TIME FIBONACCI NUMBER"); $display( " --------- -----------------"); while (test == 3) begin wait (cpu1.opcode==3'b001) // display Fib. No. at end of program loop $strobe("%t %d", $time,ram1.ram[10'h2]); wait ( cpu1.opcode != 3'b001); end end 4:begin $display("\n*** RUNNING CPUtest4 - An Executable Program ***"); $display("*** This program should calculate the N N2 SUM ***"); $display("\n TIME N+1 N2 SUM "); $display( " --------- --- ---- -----"); while (test == 4) begin wait ({cpu1.opcode,cpu1.opaddr} == 16'b100_11000_0000_0110) $strobe("%t %d %d %d", $time,ram1.ram[10'h2],ram1.ram[10'h3],ram1.ram[10'h1]); wait ({cpu1.opcode,cpu1.opaddr} != 16'b100_11000_0000_0110); end end endcase end initial begin clk=1; mnemonic=0; ip_status=0; $timeformat(-9,1,"ns",12); display_debug_message; sys_reset; test1; $stop; test2; $stop; test3; $stop; test4; $stop; test5; $stop; end task display_debug_message; begin $display("\n*************************************************"); $display("**The following debug task are avilable:**"); $display("* \"test1; \" to load the 1st diagnostic program. *"); $display("* \"test2; \" to load the 2nd diagnostic program. *"); $display("* \"test3; \" to load the Fibonacci program. *"); $display("* \"test4; \" to load the 自然数平方和 program. *"); $display("* \"test5; \" to load the 加解密 program. *"); $display("*****************************************************\n"); end endtask task test1; begin test = 0; disable MONITOR; $readmemb("test1.pro", rom1.memory); $display("Rom loading successfully!"); $readmemb("test1.dat", ram1.ram); $display("Ram loading successfully!"); $display("\n*** RUNNING CPUtest1 - The Basic CPU Diagnostic Program ***"); $display("\n TIME INSTR PC ADDR DATA "); $display(" ---------- ---- ----- ----- ----- "); #20; test = 1; #7400; sys_reset; end endtask task test2; begin test = 0; disable MONITOR; $readmemb("test2.pro", rom1.memory); $display("Rom loading successfully!"); $readmemb("test2.dat", ram1.ram); $display("Ram loading successfully!"); $display("\n*** RUNNING CPUtest2 - The Advanced CPU Diagnostic Program ***"); $display("\n TIME INSTR PC ADDR DATA "); $display(" ---------- --- ----- ----- ---- "); //#1; test = 2; #5800; sys_reset; end endtask task test3; begin test = 0; disable MONITOR; $readmemb("test3.pro", rom1.memory); $display("Rom loading successfully!"); $readmemb("test3.dat", ram1.ram); $display("Ram loading successfully!"); //#1; test = 3; #76000; sys_reset; end endtask task test4; begin test = 0; disable MONITOR; $readmemb("test4.pro", rom1.memory); $display("Rom loading successfully!"); $readmemb("test4.dat", ram1.ram); $display("Ram loading successfully!"); //#1; test = 4; #4238000; sys_reset; end endtask task test5; begin test = 0; disable MONITOR; $readmemb("test5.pro", rom1.memory); $display("Rom loading successfully!"); $readmemb("test5.dat", ram1.ram); $display("Ram loading successfully!"); //#1; test = 5; #3800000; $display("\n*** RUNNING CPUtest5 - An Executable Program ***"); $display("*** 这个程序将一块随机数据加密后再解密 计算完毕统一显示如下： ***"); $display(" No 原始数据 加密数据 解密数据 "); $display("-------------------------------------------------------------------"); for (i=0;i $display(" %d %d %d %d ", i+1,ram1.ram[16'h60+i],ram1.ram[16'h80+i],ram1.ram[16'ha0+i]); sys_reset; end endtask task sys_reset; begin reset_n = 1; #70; reset_n = 0; #150; reset_n = 1; end endtask CPU cpu1(.clk(clk), .reset_n(reset_n), .rddata(rddata), .wr(wr), .rd(rd), .halt(halt), .addr(addr) ); decoder decoder1(.addr(addr), .rom_sel(rom1_sel), .ram_sel(ram1_sel) ); rom rom1( .ena(rom1_sel), .read(rd), .addr(addr[10:0]), .data(rddata[15:0]) ); ram ram1( .ena(ram1_sel), .write(wr), .read(rd), .addr(addr[9:0]), .data(rddata[15:0]) ); endmodule
