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- bug-fix: pc_is_branch is now initialized at reset (fixes CPU unrecoverable state after reset)

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git-svn-id: http://moon:8086/svn/vhdl/trunk@359 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2009-02-16 22:48:17 +00:00
parent 08466372b2
commit 8018a94936
1 changed files with 2 additions and 1 deletions
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lib/CPUs/MIPS/src/core/mips_pipeline.vhd
+2 -1
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@@ -303,12 +303,13 @@ proc_stage_pc_next:
process(clk_1) process(clk_1)
begin begin
if rising_edge(clk_1) then if rising_edge(clk_1) then
branch_ce <= '0';
cop_ctrl.exc_left <= '0'; cop_ctrl.exc_left <= '0';
if rst = '1' then if rst = '1' then
pc.nxt <= pc.curr; pc.nxt <= pc.curr;
pc.last <= pc.curr; pc.last <= pc.curr;
branch_ce <= '1';
else else
branch_ce <= '0';
if cop_stat.exc_commit = '1' then if cop_stat.exc_commit = '1' then
pc.nxt <= cop_stat.exc_vec; pc.nxt <= cop_stat.exc_vec;
elsif sdu.ID_stall = '0' then elsif sdu.ID_stall = '0' then