T65: don't delay IRQ with branches when not RDY

subcriticalia · Apr 13, 2020 · d25498f · d25498f
1 parent 3ed9b5e
commit d25498f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/t65/T65.vhd b/t65/T65.vhd
@@ -473,7 +473,7 @@ begin
         end if;
 
         -- detect irq even if not rdy
-        if IR(4 downto 0)/="10000" or Jump/="01" then -- delay interrupts during branches (checked with Lorenz test and real 6510), not best way yet, though - but works...
+        if IR(4 downto 0)/="10000" or Jump/="01" or really_rdy = '0' then -- delay interrupts during branches (checked with Lorenz test and real 6510), not best way yet, though - but works...
             IRQ_n_o <= IRQ_n;
         end if;
         -- detect nmi even if not rdy