From 36e5abab6055a86b67ca431a2f23de8fd511779b Mon Sep 17 00:00:00 2001 From: Arthur Lu Date: Thu, 18 Aug 2022 02:08:55 +0000 Subject: [PATCH] fix testbench formatting --- RTL/program1_tb.sv | 8 +- RTL/program2_tb.sv | 281 ++++++++++++++++++++++----------------------- 2 files changed, 141 insertions(+), 148 deletions(-) diff --git a/RTL/program1_tb.sv b/RTL/program1_tb.sv index 25c890f..ff877d1 100644 --- a/RTL/program1_tb.sv +++ b/RTL/program1_tb.sv @@ -24,7 +24,7 @@ module program1_tb (); // note in practice your design should be able to handle ANY ASCII string that is // restricted to characters between space (0x20) and script f (0x9f) and shorter than // 55 characters in length - string str1 = "Mr. Watson, come here. I want to see you."; + string str1 = "Mr. Watson, come here. I want to see you."; // displayed encrypted string will go here: string str_enc1[64]; // program 1 desired output will go here @@ -72,7 +72,6 @@ module program1_tb (); initial begin file_no = 'b1; - //file_no = $fopen("msg_enocder_out.txt","w"); #0ns strlen = str1.len; // length of string 1 (# characters between " ") if(strlen>54) strlen = 54; // clip message at 54 characters // program 1 -- precompute encrypted message @@ -132,9 +131,10 @@ module program1_tb (); $fdisplay(file_no,"%d bench msg: %s %h dut msg: %h", n, msg_crypto1[n][6:0]+8'h20, msg_crypto1[n], dut.DM.core[n+64]); score++; end - else + else begin $fdisplay(file_no,"%d bench msg: %s %h dut msg: %h OOPS!", n, msg_crypto1[n][6:0]+8'h20, msg_crypto1[n], dut.DM.core[n+64]); - end + end + end $fdisplay(file_no,"score = %d/64",score); #20ns $fclose(file_no); diff --git a/RTL/program2_tb.sv b/RTL/program2_tb.sv index e66d080..c6224bd 100644 --- a/RTL/program2_tb.sv +++ b/RTL/program2_tb.sv @@ -3,155 +3,148 @@ // CSE141L // runs program 2 (decrypt a message) module program2_tb () ; -// DUT interface -- four one-bit wires, three to DUT, one from - bit clk , // advances simulation step-by-step - init = 1'b1 , // init (reset) command to DUT - start = 1'b1 ; // req (start program) command to DUT - wire done ; // done flag returned by DUT -// test bench parameters - bit [3:0] pre_length ; // space char. bytes before first char. in message - bit [7:0] message1[54] , // original raw message, in binary - msg_padded1[64], // original message, plus pre- and post-padding w/ ASCII spaces - msg_crypto1[64]; // encrypted message according to the DUT - bit [6:0] lfsr_ptrn , // chosen one of 9 maximal length 7-tap shift reg. ptrns - LFSR_ptrn[9] , // the 9 candidate maximal-length 7-bit LFSR tap ptrns - lfsr1[64] , // states of program 1 encrypting LFSR - LFSR_init ; // one of 127 possible NONZERO starting states - int score ; // count of correct encyrpted characters -// our original American Standard Code for Information Interchange message follows -// note in practice your design should be able to handle ANY ASCII string that is -// restricted to characters between space (0x20) and script f (0x9f) and shorter than -// 55 characters in length - string str1 = "Knowledge comes, but wisdom lingers"; // sample program 1 input -// string str1 = " . "; // alternative inputs -// string str1 = " 01234546789abcdefghijklmnopqrstuvwxyz. "; // (make up your own, -// string str1 = " f A joke is a very serious thing."; // as well) -// string str1 = " Ajok "; // -// string str1 = "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"; -// string str1 = " Knowledge comes, but wisdom lingers. "; // + // DUT interface -- four one-bit wires, three to DUT, one from + bit clk; // advances simulation step-by-step + bit init = 1'b1; // init (reset) command to DUT + bit start = 1'b1; // req (start program) command to DUT + wire done; // done flag returned by DUT -// displayed encrypted string will go here: - string str_enc1[64]; // program 1 desired output will go here - int strlen; // incoming string length - int pt_no; // select LFSR pattern, value 0 through 8 - int file_no; // write to file -// the 8 possible maximal-length feedback tap patterns from which to choose - assign LFSR_ptrn[0] = 7'h60; // 110_0000 - assign LFSR_ptrn[1] = 7'h48; - assign LFSR_ptrn[2] = 7'h78; - assign LFSR_ptrn[3] = 7'h72; - assign LFSR_ptrn[4] = 7'h6A; - assign LFSR_ptrn[5] = 7'h69; - assign LFSR_ptrn[6] = 7'h5C; - assign LFSR_ptrn[7] = 7'h7E; - assign LFSR_ptrn[8] = 7'h7B; - always_comb begin - pt_no = 4; - //pt_no = $urandom_range(0, 8); + // test bench parameters + bit [3:0] pre_length; // space char. bytes before first char. in message + bit [7:0] message1[54]; // original raw message, in binary + bit [7:0] msg_padded1[64]; // original message, plus pre- and post-padding w/ ASCII spaces + bit [7:0] msg_crypto1[64]; // encrypted message according to the DUT + bit [6:0] lfsr_ptrn; // chosen one of 9 maximal length 7-tap shift reg. ptrns + bit [6:0] LFSR_ptrn[9]; // the 9 candidate maximal-length 7-bit LFSR tap ptrns + bit [6:0] lfsr1[64]; // states of program 1 encrypting LFSR + bit [6:0] LFSR_init; // one of 127 possible NONZERO starting states + int score; // count of correct encyrpted characters + + // our original American Standard Code for Information Interchange message follows + // note in practice your design should be able to handle ANY ASCII string that is + // restricted to characters between space (0x20) and script f (0x9f) and shorter than + // 55 characters in length + string str1 = "Knowledge comes, but wisdom lingers"; // sample program 1 input + + // displayed encrypted string will go here: + string str_enc1[64]; // program 1 desired output will go here + int strlen; // incoming string length + int pt_no; // select LFSR pattern, value 0 through 8 + int file_no; // write to file + // the 8 possible maximal-length feedback tap patterns from which to choose + assign LFSR_ptrn[0] = 7'h60; // 110_0000 + assign LFSR_ptrn[1] = 7'h48; + assign LFSR_ptrn[2] = 7'h78; + assign LFSR_ptrn[3] = 7'h72; + assign LFSR_ptrn[4] = 7'h6A; + assign LFSR_ptrn[5] = 7'h69; + assign LFSR_ptrn[6] = 7'h5C; + assign LFSR_ptrn[7] = 7'h7E; + assign LFSR_ptrn[8] = 7'h7B; + + always_comb begin + pt_no = $urandom_range(0, 8); if(pt_no>8) pt_no[3] = 0; // restrict pt_no to 0 through 8 lfsr_ptrn = LFSR_ptrn[pt_no]; // look up and engage the selected pattern; to data_mem[62] end -// now select a starting LFSR state -- any nonzero value will do - always_comb begin - LFSR_init = $urandom;//$random>>2; // or set a value, such as 7'b1, for debug - if(!LFSR_init) LFSR_init = 7'b1; // prevents illegal starting state = 7'b0; + + // now select a starting LFSR state -- any nonzero value will do + always_comb begin + LFSR_init = $urandom;//$random>>2; // or set a value, such as 7'b1, for debug + if(!LFSR_init) LFSR_init = 7'b1; // prevents illegal starting state = 7'b0; + end + + // set preamble lengths for the four program runs (always > 9 but < 16) + always_comb begin + pre_length = 10;//$random>>10 ; // program 1 run + if(pre_length < 10) pre_length = 10; // prevents pre_length < 10 + else if(pre_length > 26) pre_length = 26; + end + + // ***** instantiate your own top level design here ***** + top_level dut( + .clk(clk), // input: use your own port names, if different + .init(init), // input: some prefer to call this ".reset" + .req(start), // input: launch program + .ack(done) // output: "program run complete" + ); + + initial begin + file_no = 'b1; + #0ns strlen = str1.len; // length of string 1 (# characters between " ") + if(strlen>52) strlen = 52; // clip message at 52 characters + // program 1 -- precompute encrypted message + lfsr1[0] = LFSR_init; // any nonzero value (zero may be helpful for debug) + $fdisplay(file_no,"run encryption program; original message = "); + $fdisplay(file_no,"%s",str1); // print original message in transcript window + $fdisplay(file_no,"LFSR_ptrn = 0x%h, LFSR_init = 0x%h",lfsr_ptrn,LFSR_init); + $fdisplay(file_no,"pt_no = %d",pt_no); + + // will subtract 0x20 from each preamble and message character + for(int j=0; j<64; j++) // pre-fill message_padded with ASCII space characters + msg_padded1[j] = 8'h20; // + for(int l=0; l 9 but < 16) - always_comb begin - pre_length = 10;//$random>>10 ; // program 1 run - if(pre_length < 10) pre_length = 10; // prevents pre_length < 10 - else if(pre_length > 26) pre_length = 26; - end - -// ***** instantiate your own top level design here ***** - top_level dut( - .clk (clk ), // input: use your own port names, if different - .init (init ), // input: some prefer to call this ".reset" - .req (start), // input: launch program - .ack (done ) // output: "program run complete" - ); - - initial begin -//***** pre-load your instruction ROM here or inside itself ***** -// $readmemb("encoder.bin", dut.instr_rom.rom); -// you may also pre-load desired constants, etc. into -// your data_mem here -- the upper addresses are reserved for your use -// dut.data_mem.DM[128]=8'hfe; //whatever constants you want -// to display to console, change this line to file_no = 'b1; - file_no = 'b1; -// file_no = $fopen("msg_decoder_out.txt"); // create your output file - #0ns strlen = str1.len; // length of string 1 (# characters between " ") - if(strlen>52) strlen = 52; // clip message at 52 characters -// program 1 -- precompute encrypted message - lfsr1[0] = LFSR_init; // any nonzero value (zero may be helpful for debug) - $fdisplay(file_no,"run encryption program; original message = "); - $fdisplay(file_no,"%s",str1); // print original message in transcript window - $fdisplay(file_no,"LFSR_ptrn = 0x%h, LFSR_init = 0x%h",lfsr_ptrn,LFSR_init); - $fdisplay(file_no,"pt_no = %d",pt_no); - -// will subtract 0x20 from each preamble and message character - for(int j=0; j<64; j++) // pre-fill message_padded with ASCII space characters - msg_padded1[j] = 8'h20; // - for(int l=0; l