brendanhaines/cpu
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display more data to simplify verification

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This commit is contained in:
Brendan Haines 2020-11-09 23:38:22 -07:00
parent 21883dbd84
commit 32d0a2dcaa
2 changed files with 6 additions and 5 deletions
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3
hdl/core.v
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@ -298,7 +298,7 @@ always @(*) begin
(((r_wb_rd == s_id_rs1) && (s_id_rs1 != 0)) ||
((r_wb_rd == s_id_rs2) && (s_id_rs2 != 0))));
if (s_id_invalid) begin
if (s_id_invalid & r_id_valid) begin
$display("%0t:\tInvalid instruction at PC=0x%h", $time, r_id_pc);
s_id_aluop = 3'hx;
end
@ -507,6 +507,7 @@ always @(posedge clk) begin: pipeline_update
// TODO: should I write if s_wb_stall=1?
if (r_wb_rd != 0 && s_wb_write && r_wb_valid) begin
regfile[r_wb_rd] <= s_wb_data;
$display("%0t:\tPC=0x%h\tx%02d=0x%h", $time, r_id_pc, r_wb_rd, s_wb_data);
end
end
end

8
hdl/tb/core_tb.v
View File

@ -1,4 +1,4 @@
`timescale 1 ns / 1 ps
`timescale 500 ps / 1 ps
module core_tb();
@ -39,15 +39,15 @@ initial begin
clk = 0;
reset = 1;
#20
#10
reset = 0;
#5000
#1000
reset = 1;
$stop;
end
always #10 clk = !clk;
always #2 clk = !clk;
core dut(
.clk(clk),