diff --git a/src/main/scala/rocket/VortexCore.scala b/src/main/scala/rocket/VortexCore.scala
index 2e8bbd1..6d3dc1f 100644
--- a/src/main/scala/rocket/VortexCore.scala
+++ b/src/main/scala/rocket/VortexCore.scala
@@ -119,7 +119,7 @@ class Vortex(tile: VortexTile)(implicit p: Parameters)
   // unused addResource("/vsrc/vortex/hw/rtl/libs/VX_bypass_buffer.sv")
   addResource("/vsrc/vortex/hw/rtl/libs/VX_sp_ram.sv")
   addResource("/vsrc/vortex/hw/rtl/libs/VX_stream_demux.sv")
-  addResource("/vsrc/vortex/hw/rtl/libs/VX_pending_size.sv")
+  
   // unused addResource("/vsrc/vortex/hw/rtl/libs/VX_index_queue.sv")
   addResource("/vsrc/vortex/hw/rtl/libs/VX_serial_div.sv")
   addResource("/vsrc/vortex/hw/rtl/libs/VX_fair_arbiter.sv")
@@ -216,6 +216,7 @@ class Vortex(tile: VortexTile)(implicit p: Parameters)
   // addResource("/vsrc/vortex/hw/rtl/afu/VX_to_mem.sv")
   // addResource("/vsrc/vortex/sim/vlsim/vortex_afu_shim.sv")
   if (tile.vortexParams.useVxCache) {
+    addResource("/vsrc/vortex/hw/rtl/libs/VX_pending_size.sv")
     addResource("/vsrc/vortex/hw/rtl/cache/VX_shared_mem.sv")
     addResource("/vsrc/vortex/hw/rtl/cache/VX_core_rsp_merge.sv")
     addResource("/vsrc/vortex/hw/rtl/cache/VX_tag_access.sv")
diff --git a/src/main/scala/tile/VortexTile.scala b/src/main/scala/tile/VortexTile.scala
index f618ac3..c8e1e29 100644
--- a/src/main/scala/tile/VortexTile.scala
+++ b/src/main/scala/tile/VortexTile.scala
@@ -23,6 +23,7 @@ case class RocketTileBoundaryBufferParams(force: Boolean = false)
 
 case class VortexTileParams(
     core: RocketCoreParams = RocketCoreParams(),
+    useVxCache: Boolean = false,
     icache: Option[ICacheParams] = None /* Some(ICacheParams()) */,
     dcache: Option[DCacheParams] = None /* Some(DCacheParams()) */,
     btb: Option[BTBParams] = None, // Some(BTBParams()),
@@ -35,10 +36,7 @@ case class VortexTileParams(
     boundaryBuffers: Option[RocketTileBoundaryBufferParams] = None
     ) extends InstantiableTileParams[VortexTile] {
   // require(icache.isDefined)
-  // require(dcache.isDefined)
-  require(icache.isDefined == dcache.isDefined)
-  
-  def useVxCache: Boolean = !icache.isDefined; 
+  // require(dcache.isDefined) 
 
   def instantiate(crossing: TileCrossingParamsLike, lookup: LookupByHartIdImpl)(implicit p: Parameters): VortexTile = {
     new VortexTile(this, crossing, lookup)