diff --git a/c64accel.xise b/c64accel.xise
index eb1965f8..853cee6f 100644
--- a/c64accel.xise
+++ b/c64accel.xise
@@ -17,14 +17,14 @@
   <files>
     <file xil_pn:name="container.vhd" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="93"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="31"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="33"/>
     </file>
     <file xil_pn:name="container.ucf" xil_pn:type="FILE_UCF">
       <association xil_pn:name="Implementation" xil_pn:seqID="0"/>
     </file>
     <file xil_pn:name="iomapper.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="121"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="27"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="29"/>
     </file>
     <file xil_pn:name="kernel65.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="122"/>
@@ -36,11 +36,11 @@
     </file>
     <file xil_pn:name="charrom.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="59"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="24"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="26"/>
     </file>
     <file xil_pn:name="dotclock.vhd" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="64"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="30"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="32"/>
     </file>
     <file xil_pn:name="simple6502.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="75"/>
@@ -52,15 +52,15 @@
     </file>
     <file xil_pn:name="uart_monitor.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="78"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="26"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="28"/>
     </file>
     <file xil_pn:name="UART_TX_CTRL.vhd" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="78"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="9"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="10"/>
     </file>
     <file xil_pn:name="uart_rx.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="79"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="10"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="11"/>
     </file>
     <file xil_pn:name="kernel64.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="81"/>
@@ -72,23 +72,23 @@
     </file>
     <file xil_pn:name="machine.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="83"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="29"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="31"/>
     </file>
     <file xil_pn:name="cia6526.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="84"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="23"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="25"/>
     </file>
     <file xil_pn:name="ram8x64k.vhd" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="85"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="14"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="15"/>
     </file>
     <file xil_pn:name="keymapper.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="86"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="18"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="19"/>
     </file>
     <file xil_pn:name="sdcardio.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="76"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="13"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="14"/>
     </file>
     <file xil_pn:name="sd.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="77"/>
@@ -96,19 +96,19 @@
     </file>
     <file xil_pn:name="ram32x1024.vhd" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="78"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="15"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="16"/>
     </file>
     <file xil_pn:name="gs4510.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="79"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="28"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="30"/>
     </file>
     <file xil_pn:name="viciv.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="80"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="25"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="27"/>
     </file>
     <file xil_pn:name="kickstart.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="75"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="17"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="18"/>
     </file>
     <file xil_pn:name="ramlatch64.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="80"/>
@@ -116,23 +116,23 @@
     </file>
     <file xil_pn:name="shadowram.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="83"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="12"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="13"/>
     </file>
     <file xil_pn:name="microcode.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="87"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="16"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="17"/>
     </file>
     <file xil_pn:name="cputypes.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="88"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="7"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="8"/>
     </file>
     <file xil_pn:name="version.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="89"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="8"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="9"/>
     </file>
     <file xil_pn:name="sid_6581.vhd" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="89"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="11"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="12"/>
     </file>
     <file xil_pn:name="sid_voice.vhd" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="90"/>
@@ -148,19 +148,19 @@
     </file>
     <file xil_pn:name="ghdl_ram9x4k.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="95"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="20"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="21"/>
     </file>
     <file xil_pn:name="ghdl_screen_ram_buffer.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="96"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="19"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="20"/>
     </file>
     <file xil_pn:name="ghdl_chipram8bit.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="97"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="22"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="23"/>
     </file>
     <file xil_pn:name="ghdl_ram128x1k.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="95"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="21"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="22"/>
     </file>
     <file xil_pn:name="ghdl_ram8x512.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="96"/>
@@ -168,11 +168,15 @@
     </file>
     <file xil_pn:name="ethernet.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="96"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="96"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="24"/>
     </file>
     <file xil_pn:name="ghdl_ram8x4096.vhdl" xil_pn:type="FILE_VHDL">
       <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="97"/>
-      <association xil_pn:name="Implementation" xil_pn:seqID="97"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="7"/>
+    </file>
+    <file xil_pn:name="pck_crc32_d8.vhdl" xil_pn:type="FILE_VHDL">
+      <association xil_pn:name="BehavioralSimulation" xil_pn:seqID="98"/>
+      <association xil_pn:name="Implementation" xil_pn:seqID="98"/>
     </file>
   </files>