rtl/VME_bus.vhd: reset internal address/AM register when AS is inactive…

rtl/VME_bus.vhd: reset internal address/AM register when AS is inactive (prevents two cards DTACKing same access bug)

rtl/VME_bus.vhd: reset internal address/AM register when AS is inactive…
rtl/VME_bus.vhd: reset internal address/AM register when AS is inactive (prevents two cards DTACKing same access bug)
9ae530e9 · Tomasz Wlostowski · 8006dbda · 9ae530e9
Commit 9ae530e9 authored Feb 03, 2014 by Tomasz Wlostowski
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Showing with 1 addition and 5 deletions

VME_bus.vhd hdl/vme64x-core/rtl/VME_bus.vhd +1 -5

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--- a/hdl/vme64x-core/rtl/VME_bus.vhd
+++ b/hdl/vme64x-core/rtl/VME_bus.vhd
@@ -866,7 +866,7 @@ s_VMEdataInput <= unsigned(VME_DATA_i);
 p_addrLatching : process(clk_i)
 begin
  if rising_edge(clk_i) then
-    if s_reset = '1' then
+    if s_reset = '1' or s_mainFSMreset = '1' then
      s_VMEaddrLatched <= (others => '0');
      s_LWORDlatched   <= '0';
      s_AMlatched      <= (others => '0');
@@ -875,10 +875,6 @@ begin
        s_VMEaddrLatched <= s_VMEdataInput & s_VMEaddrInput;
        s_LWORDlatched   <= s_LWORDinput;
        s_AMlatched      <= VME_AM_i;
-      else
-        s_VMEaddrLatched <= s_VMEaddrLatched;
-        s_LWORDlatched   <= s_LWORDlatched;
-        s_AMlatched      <= s_AMlatched;
      end if;
    end if;
  end if;