diff --git a/blk/415 b/blk/415
deleted file mode 100644
index 4ed5cf8..0000000
--- a/blk/415
+++ /dev/null
@@ -1 +0,0 @@
-1 4 LOADR+
diff --git a/blk/420 b/blk/420
new file mode 100644
index 0000000..1c01882
--- /dev/null
+++ b/blk/420
@@ -0,0 +1 @@
+1 4 LOADR+ ( xcomp core high )
diff --git a/blk/416 b/blk/421
similarity index 100%
rename from blk/416
rename to blk/421
diff --git a/blk/417 b/blk/422
similarity index 100%
rename from blk/417
rename to blk/422
diff --git a/blk/418 b/blk/423
similarity index 100%
rename from blk/418
rename to blk/423
diff --git a/blk/419 b/blk/424
similarity index 100%
rename from blk/419
rename to blk/424
diff --git a/emul/xcomp.fs b/emul/xcomp.fs
index 2ecd8cd..6d93236 100644
--- a/emul/xcomp.fs
+++ b/emul/xcomp.fs
@@ -13,10 +13,10 @@
 CURRENT @ XCURRENT !
 
 282 LOAD  ( boot.z80 )
-393 LOAD  ( icore low )
+393 LOAD  ( xcomp core low )
 : (emit) 0 PC! ;
 : (key) 0 PC@ ;
-415 LOAD  ( icore high )
+420 LOAD  ( xcomp core high )
 (entry) _
 ( Update LATEST )
 PC ORG @ 8 + !
diff --git a/recipes/rc2014/xcomp.fs b/recipes/rc2014/xcomp.fs
index f2af298..d9ca5d6 100644
--- a/recipes/rc2014/xcomp.fs
+++ b/recipes/rc2014/xcomp.fs
@@ -20,10 +20,10 @@ RAMSTART 0x70 + CONSTANT ACIA_MEM
 CURRENT @ XCURRENT !
 
 282 LOAD  ( boot.z80 )
-393 LOAD  ( icore low )
+393 LOAD  ( xcomp core low )
 352 LOAD  ( acia )
 372 381 LOADR  ( sdc )
-415 LOAD  ( icore high )
+420 LOAD  ( xcomp core high )
 (entry) _
 ( Update LATEST )
 PC ORG @ 8 + !
diff --git a/recipes/ti84/xcomp.fs b/recipes/ti84/xcomp.fs
index 34c49f6..4351c2c 100644
--- a/recipes/ti84/xcomp.fs
+++ b/recipes/ti84/xcomp.fs
@@ -66,11 +66,11 @@ CURRENT @ XCURRENT !
 
 0x100 BIN( !
 282 LOAD  ( boot.z80 )
-393 LOAD  ( icore low )
+393 LOAD  ( xcomp core low )
 CREATE ~FNT CPFNT3x5
 555 560 LOADR ( LCD low )
 566 570 LOADR ( KBD low )
-415 LOAD  ( icore high )
+420 LOAD  ( xcomp core high )
 (entry) _
 ( Update LATEST )
 PC ORG @ 8 + !
diff --git a/recipes/trs80/xcomp.fs b/recipes/trs80/xcomp.fs
index 689c748..efeda22 100644
--- a/recipes/trs80/xcomp.fs
+++ b/recipes/trs80/xcomp.fs
@@ -15,8 +15,8 @@ CURRENT @ XCURRENT !
 0x3000 BIN( !
 282 LOAD  ( boot.z80 )
 492 LOAD  ( trs80.z80 )
-393 LOAD  ( icore low )
-415 LOAD  ( icore high )
+393 LOAD  ( xcomp core low )
+420 LOAD  ( xcomp core high )
 (entry) _
 ( Update LATEST )
 PC ORG @ 8 + !