[Modified] 8-stage v0.2. optimize mul stall, pass pref test but ail func test

2023-07-31 16:05:29 +08:00
parent b38d04cc35
commit 9f40b5f1bb
24 changed files with 5711 additions and 234 deletions
--- a/lacpu/rtl/mycpu/mul_div_lock.v
+++ b/lacpu/rtl/mycpu/mul_div_lock.v
@@ -67,7 +67,7 @@ module mul_div_lock (

            first_enable     <= 0;
        end
-        else if (!stallreq & (mul_en|div_en) & !first_enable & !stall[2]) begin
+        else if (!stallreq & (mul_en|div_en) & !first_enable & (!stall[2] | (stall[2] & (!stall[3])))) begin
            a_buffer         <= 0;
            b_buffer         <= 0;
            sign_flag_buffer <= 0;