diff --git a/8080/CPM/cpmfiles/test-blk.fth b/8080/CPM/cpmfiles/test-blk.fth
index 66f9810..cd456d2 100644
--- a/8080/CPM/cpmfiles/test-blk.fth
+++ b/8080/CPM/cpmfiles/test-blk.fth
@@ -1,5 +1,5 @@
 
-include logfile.fth
+include log2file.fb  \ so that include with block file gets tested
 ' noop Is .status
 logopen
 
diff --git a/8080/CPM/cpmfiles/v4th.com b/8080/CPM/cpmfiles/v4th.com
index be6bbe1..1d99df3 100644
Binary files a/8080/CPM/cpmfiles/v4th.com and b/8080/CPM/cpmfiles/v4th.com differ
diff --git a/8080/CPM/cpmfiles/v4thblk.com b/8080/CPM/cpmfiles/v4thblk.com
index 2e7cf41..a3e0acd 100644
Binary files a/8080/CPM/cpmfiles/v4thblk.com and b/8080/CPM/cpmfiles/v4thblk.com differ
diff --git a/8080/CPM/cpmfiles/v4thblk.fth b/8080/CPM/cpmfiles/v4thblk.fth
index 14712d0..623e58e 100644
--- a/8080/CPM/cpmfiles/v4thblk.fth
+++ b/8080/CPM/cpmfiles/v4thblk.fth
@@ -5,10 +5,10 @@ Target definitions   $100 here!
 
   include vf-core.fth
   include vf-io.fth
-  include vf-bufs.fth
   include vf-sys.fth
   include vf-bdos.fth
   include vf-file.fth
+  include vf-bufs.fth
   include vf-end.fth
 
 cr .( unresolved: )  .unresolved   ( ' .blk is .status )
diff --git a/8080/CPM/cpmfiles/vf-bufs.fth b/8080/CPM/cpmfiles/vf-bufs.fth
index 6274848..daab700 100644
--- a/8080/CPM/cpmfiles/vf-bufs.fth
+++ b/8080/CPM/cpmfiles/vf-bufs.fth
@@ -212,3 +212,25 @@ Target Dos also
    l/s 0 DO
      cr I 2 .r space scr @ block I c/l * + c/l -trailing type
    LOOP cr ;
+
+
+Variable loadfile
+
+: (load  ( blk offset -- )
+   isfile push  loadfile push  fromfile push  blk push >in push
+   >in !  blk !  isfile@ loadfile !  .status  interpret ;
+
+: load   ( blk --)     ?dup 0=exit  0 (load ;
+' load IS include-load
+
+
+\ *** Block No. 85, Hexblock 55
+
+\ +load thru +thru --> rdepth depth                      20Oct86
+
+: +load    ( offset --)       blk @ + load ;
+
+: thru     ( from to --)      1+ swap DO I  load LOOP ;
+: +thru    ( off0 off1 --)    1+ swap DO I +load LOOP ;
+
+: -->        1 blk +! >in off .status ; immediate
diff --git a/8080/CPM/cpmfiles/vf-file.fth b/8080/CPM/cpmfiles/vf-file.fth
index f31925c..a94ee7c 100644
--- a/8080/CPM/cpmfiles/vf-file.fth
+++ b/8080/CPM/cpmfiles/vf-file.fth
@@ -1,4 +1,6 @@
 
+Target Dos also
+
   : cr+ex@  ( fcb -- cr+256*ex )
     dup &34 + c@  swap &14 + c@ $100 * + ;
   : cr+ex!  ( cr+256*ex fcb -- )
@@ -61,10 +63,14 @@
 | : interpret-via-tib
   BEGIN freadline >r .status >in off  interpret  r> UNTIL ;
 
+  Defer include-load
+| : block-not-implemented 1 abort" block file access not implemented" ;
+  ' block-not-implemented IS include-load
+
   : include-isfile ( -- )
   increc push  0 isfile@ cr+ex!
   isfile@ increadrec Abort" can't read start of file"
-  probe-for-fb IF 1 load exit THEN
+  probe-for-fb IF 1 include-load exit THEN
   incfile push  isfile@ incfile !
   savetib >r  interpret-via-tib  r> restoretib
   incfile @ 2+ closefile Abort" error closing file" ;
diff --git a/8080/CPM/cpmfiles/vf-io.fth b/8080/CPM/cpmfiles/vf-io.fth
index b5c6d83..368efb4 100644
--- a/8080/CPM/cpmfiles/vf-io.fth
+++ b/8080/CPM/cpmfiles/vf-io.fth
@@ -1,5 +1,7 @@
 \ *** Block No. 84, Hexblock 54
 
+Target
+
 \ .status push load                                      20Oct86
 
 Defer .status   ' noop Is .status
@@ -8,26 +10,6 @@ Defer .status   ' noop Is .status
 
 : push   ( addr -- )   r> swap dup >r @ >r pull >r >r ;
                        restrict
-Variable loadfile
-
-: (load  ( blk offset -- )
-   isfile push  loadfile push  fromfile push  blk push >in push
-   >in !  blk !  isfile@ loadfile !  .status  interpret ;
-
-: load   ( blk --)     ?dup 0=exit  0 (load ;
-
-
-
-\ *** Block No. 85, Hexblock 55
-
-\ +load thru +thru --> rdepth depth                      20Oct86
-
-: +load    ( offset --)       blk @ + load ;
-
-: thru     ( from to --)      1+ swap DO I  load LOOP ;
-: +thru    ( off0 off1 --)    1+ swap DO I +load LOOP ;
-
-: -->        1 blk +! >in off .status ; immediate
 
 : rdepth   ( -- +n)           r0 @ rp@ 2+   - 2/ ;
 : depth    ( -- +n)           sp@ s0 @ swap - 2/ ;
diff --git a/8080/CPM/cpmfiles/vf-sys.fth b/8080/CPM/cpmfiles/vf-sys.fth
index 8c9ce96..9d064e7 100644
--- a/8080/CPM/cpmfiles/vf-sys.fth
+++ b/8080/CPM/cpmfiles/vf-sys.fth
@@ -1,5 +1,7 @@
 \ *** Block No. 104, Hexblock 68
 
+Target
+
 \ endpoints of forget                                    01Jul86
 
 | : |? ( nfa -- flag )   c@ $20 and ;