updated Scalp Router for debugging

designs/vivado/scalp_firmware/2020.2/src/hdl/scalp_firmware.vhd

@@ -893,7 +893,7 @@ begin
 
             -- type t_write_sp_states is (E_WR_SP_IDLE, E_WR_SP_VALID, E_WR_SP_WAIT);
 
-            type t_write_sp_states is (E_WR_SP_IDLE_0, E_WR_SP_VALID_0, E_WR_SP_WAIT_0, E_WR_SP_IDLE_1, E_WR_SP_VALID_1, E_WR_SP_WAIT_1);
+            type t_write_sp_states is (E_WR_SP_IDLE_0, E_WR_SP_VALID_0, E_WR_SP_WAIT_0, E_WR_SP_IDLE_1, E_WR_LAST_1, E_WR_SP_VALID_1, E_WR_SP_WAIT_1);
 
             signal ScalpRouterResetxRNA : std_ulogic := '0';
             -- Scalp Packets
@@ -912,8 +912,8 @@ begin
                  SpPayloadxD => C_SP_PAYLOAD_0);
             signal ScalpPacketValid12xS                  : std_ulogic        := '0';
             --
-            signal WrSPStatexDP                          : t_write_sp_states := E_WR_SP_IDLE;
-            signal WrSPStatexDN                          : t_write_sp_states := E_WR_SP_IDLE;
+            signal WrSPStatexDP                          : t_write_sp_states := E_WR_SP_IDLE_0;
+            signal WrSPStatexDN                          : t_write_sp_states := E_WR_SP_IDLE_0;
             signal VioWrSpValidxS                        : std_ulogic        := '0';
             -- Scalp Packet
             -- attribute mark_debug of ScalpPacket0xD       : signal is "true";
@@ -1168,8 +1168,15 @@ begin
                                 WrSPStatexDN <= E_WR_SP_IDLE_1;
 
                         when E_WR_SP_IDLE_1 =>
-                                ScalpPacketValid12xS <= '1';
-                                WrSPStatexDN         <= E_WR_SP_VALID_1;
+                                if RXAxism2sVectorxD(C_LOCAL_IF_ID).LastxS = '1' then
+                                    WrSPStatexDN <= E_WR_LAST_1;
+                                end if;
+
+                        when E_WR_LAST_1 =>
+                                if RXAxism2sVectorxD(C_LOCAL_IF_ID).LastxS = '0' then
+                                    ScalpPacketValid12xS <= '1';
+                                    WrSPStatexDN         <= E_WR_SP_VALID_1;
+                                end if;
 
                         when E_WR_SP_VALID_1 =>
                                 ScalpPacketValid12xS <= '0';