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update program3 with new testbench spec

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This commit is contained in:
Arthur Lu
2022-08-28 00:13:43 +00:00
parent e5684b4705
commit 90c683d1da
2 changed files with 10 additions and 9 deletions
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8
RTL/program3_tb.sv
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@@ -24,11 +24,11 @@ module program3_tb () ;
// 53 characters in length
// *** No more than 24 leading space characters, including preamble. ***
// string str1 =
// string str1 = "Mr. Watson, come here. I want to see you."; // sample program 1 input
string str1 = " A joke is a very serious thing."; // sample program 1 input
// string str1 = " Knowledge comes, but wisdom lingers. "; // alternative inputs
// string str1 = " 01234546789abcdefghijklmnopqrstuvwxyz. "; // (make up your own,
// string str1 = " A joke is a very serious thing."; // as well)
string str1 = " Ajok "; //
// string str1 = " Ajok "; //
// string str1 = "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@";
// string str1 = "``@@```@@@````@@@@````@@@@@";
// string str1 = " Knowledge comes, but wisdom lingers. "; //
@@ -110,7 +110,7 @@ module program3_tb () ;
// testbench will change on falling clocks to avoid race conditions at rising clocks
for (int i=0; i<64; i++) begin
msg_crypto1[i] = ((msg_padded1[i]-'h20) ^ lfsr1[i]);
msg_crypto1[i][7] = 0;//^msg_crypto1[i][6:0]; // prepend parity bit into MSB
msg_crypto1[i][7] = ^msg_crypto1[i][6:0]; // prepend parity bit into MSB
$fdisplay(file_no,"i=%d, msg_pad=0x%h, lfsr=%b msg_crypt w/ parity = 0x%h",
i,msg_padded1[i],lfsr1[i],msg_crypto1[i]);
//for display purposes only, add 8'h20 to avoid nonprintable characters
@@ -135,7 +135,7 @@ module program3_tb () ;
dut.DM.core[m+64] = msg_crypto1[m];
for(int n=24; n<64; n++) begin // load subsequent, possibly corrupt, encrypted message into data memory
// set flipper = 8 or higher to disable bit corruption
flipper = 8;//$random; // value between 0 and 63, inclusive
flipper = $random;//$random; // value between 0 and 63, inclusive
dut.DM.core[n+64] = msg_crypto1[n]^(1<<flipper);
if(flipper<8) flipped[n]=1;
end