diff --git a/Makefile b/Makefile
index 63a1672891..37f00ccf2a 100644
--- a/Makefile
+++ b/Makefile
@@ -80,6 +80,7 @@ CWFLAGS=-Wall
 
 G_OFILES=\
        g/a.o \
+       g/e.o \
        g/h.o \
        g/i.o \
        g/j.o \
diff --git a/g/e.c b/g/e.c
index 9d9941e5f0..55778c12ba 100644
--- a/g/e.c
+++ b/g/e.c
@@ -11,13 +11,13 @@
 
 /* u3_ce_fault(): handle a memory event with libsigsegv protocol.
 */
-static c3_i
+c3_i
 u3_ce_fault(void* adr_v, c3_i ser_i)
 {
   if ( ser_i ) {
     c3_w*    adr_w = (c3_w*) adr_v;
 
-    if ( (adr_w < u3_Loom) || (adr_w > (u3_Loom + u3_cc_size)) ) {
+    if ( (adr_w < u3_Loom) || (adr_w > (u3_Loom + u3_cc_pages)) ) {
       fprintf(stderr, "address %p out of loom!\r\n", adr_v);
       return 0;
     }
@@ -42,36 +42,12 @@ u3_ce_fault(void* adr_v, c3_i ser_i)
   return 1;
 }
 
-/* u3_ce_sync(): write a checkpoint at the current state.
-*/
-
-    for ( ceg_u = &LoomSegmentA; ceg_u; ceg_u = ceg_u->nex_u ) {
-      if ( (pag_w >= ceg_u->bot_w) &&
-           (win_w=(pag_w - ceg_u->bot_w)) < ceg_u->len_w )
-      {
-        if ( win_w >= ceg_u->pgs_w ) {
-          ceg_u->pgs_w = win_w + 1;
-        }
-        break;
-      }
-    }
-    if ( 0 == ceg_u ) {
-      fprintf(stderr, "page %d is not in a segment!\n", pag_w);
-      return 1;
-    }
-
-    return 1;
-  }
-  return 0;
-}
-
 /* _ce_image_open(): open or create image.  yes if it already exists.
 */
 static c3_o
 _ce_image_open(u3_cs_image* img_u)
 {
   c3_c ful_c[8193];
-  c3_i fid_i;
 
   snprintf(ful_c, 8192, "%s", u3P.cpu_c);
   mkdir(ful_c, 0700);
@@ -86,13 +62,13 @@ _ce_image_open(u3_cs_image* img_u)
   if ( -1 != (img_u->fid_i = open(ful_c, O_RDWR)) ) {
     struct stat buf_u;
 
-    if ( -1 == fstat(fid_i, &buf_u) )
+    if ( -1 == fstat(img_u->fid_i, &buf_u) ) {
       perror(ful_c);
       c3_assert(0);
       return u3_no;
     }
     else { 
-      c3_d siz_d = buf_u.st_siz;
+      c3_d siz_d = buf_u.st_size;
       c3_d pgs_d = (siz_d + (c3_d)((1 << (u3_cc_page + 2)) - 1)) >> 
                    (c3_d)(u3_cc_page + 2);
  
@@ -119,71 +95,6 @@ _ce_image_open(u3_cs_image* img_u)
   }
 }
 
-/* u3_ce_boot(): start the memory system.
-*/
-void 
-u3_ce_boot(c3_c* cpu_c)
-{
-  /* Map at fixed address.
-  */
-  {
-    void* map_v;
-
-    map_v = mmap((void *)u3_Loom,
-                 (u3_cc_size << 2),
-                 PROT_READ,
-                 (MAP_ANON | MAP_FIXED | MAP_PRIVATE),
-                 -1, 0);
-
-    if ( -1 == (c3_ps)map_v ) {
-      map_v = mmap((void *)0,
-                   (u3_cc_size << 2),
-                    PROT_READ,
-                    MAP_ANON | MAP_PRIVATE,
-                    -1, 0);
-
-      if ( -1 == (c3_ps)map_v ) {
-        fprintf(stderr, "map failed twice\n");
-      } else {
-        fprintf(stderr, "map failed - try U2_OS_LoomBase %p\n", map_v);
-      }
-      exit(1);
-    }
-    printf("loom: mapped %dMB\n", (u3_cc_size >> 18));
-  }
-
-  /* Open and load, or create, image files.
-  */
-  {
-    u3P.cpu_c = cpu_c;
-    u3P.nor_u.nam_c = "north";
-    u3P.sou_u.nam_c = "south";
-
-    if ( u3_yes == _ce_image_open(&u3P.nor_u) ) {
-      _ce_image_blit_north(&u3P.nor_u);
-    }
-    if ( u3_yes == _ce_image_open(&u3P.sou_u) ) {
-      _ce_image_blit_south(&u3P.sou_u);
-    }
-  }
-
-  /* Open and apply any patches.
-  */
-  {
-    u3_cs_patch* pat_u;
-
-    if ( 0 != (pat_u = _ce_patch_read()) ) {
-      _ce_patch_memory(pat_u);
-      _ce_image_patch(pat_u, &u3P.nor_u, &u3P.sou_u);
-
-      _ce_image_fsync(&u3P.nor_u);
-      _ce_image_fsync(&u3P.sou_u);
-
-      _ce_patch_delete();
-    }
-  }
-}
-
 /* _ce_patch_write_control(): write control block file.
 */
 static void
@@ -199,10 +110,9 @@ _ce_patch_write_control(u3_cs_patch* pat_u)
 
 /* _ce_patch_read_control(): read control block file.
 */
-static void
+static c3_o
 _ce_patch_read_control(u3_cs_patch* pat_u)
 {
-  u3_cs_control* con_u;
   c3_w len_w;
 
   c3_assert(0 == pat_u->con_u);
@@ -223,17 +133,17 @@ _ce_patch_read_control(u3_cs_patch* pat_u)
   {
     free(pat_u->con_u);
     pat_u->con_u = 0;
-
     return u3_no;
   }
+  return u3_yes;
 }
 
 /* _ce_patch_create(): create patch files.
 */
-static c3_i
+static void
 _ce_patch_create(u3_cs_patch* pat_u)
 {
-  c3_i fid_i;
+  c3_c ful_c[8193];
 
   snprintf(ful_c, 8192, "%s", u3P.cpu_c);
   mkdir(ful_c, 0700);
@@ -242,24 +152,79 @@ _ce_patch_create(u3_cs_patch* pat_u)
   mkdir(ful_c, 0700);
 
   snprintf(ful_c, 8192, "%s/.urb/control.bin", u3P.cpu_c);
-  if ( -1 == (pat_u->ctl_i = open(ful_c, O_WRONLY | O_CREAT | O_EXCL, 0666)) ) {
+  if ( -1 == (pat_u->ctl_i = open(ful_c, O_RDWR | O_CREAT | O_EXCL, 0666)) ) {
     c3_assert(0);
-    return 0;
   }
 
   snprintf(ful_c, 8192, "%s/.urb/memory.bin", u3P.cpu_c);
-  if ( -1 == (pat_u->mem_i = open(ful_c, O_WRONLY | O_CREAT | O_EXCL, 0666)) ) {
+  if ( -1 == (pat_u->mem_i = open(ful_c, O_RDWR | O_CREAT | O_EXCL, 0666)) ) {
     c3_assert(0);
-    return 0;
   }
 }
 
+/* _ce_patch_delete(): delete a patch.
+*/
+static void
+_ce_patch_delete(void)
+{
+  c3_c ful_c[8193];
+
+  snprintf(ful_c, 8192, "%s/.urb/control.bin", u3P.cpu_c);
+  unlink(ful_c);
+
+  snprintf(ful_c, 8192, "%s/.urb/memory.bin", u3P.cpu_c);
+  unlink(ful_c);
+}
+
+/* _ce_patch_verify(): check patch data mug.
+*/
+static c3_o
+_ce_patch_verify(u3_cs_patch* pat_u)
+{
+  c3_w i_w;
+
+  for ( i_w = 0; i_w < pat_u->con_u->pgs_w; i_w++ ) {
+    c3_w mug_w = pat_u->con_u->mem_u[i_w].mug_w;
+    c3_w mem_w[u3_cc_page];
+
+    if ( -1 == lseek(pat_u->mem_i, (i_w << (u3_cc_page + 2)), SEEK_SET) ) {
+      c3_assert(0);
+      return u3_no;
+    }
+    if ( -1 == read(pat_u->mem_i, mem_w, (1 << (u3_cc_page + 2))) ) {
+      c3_assert(0);
+      return u3_no;
+    }
+    {
+      c3_w nug_w = u3_cr_mug_words(mem_w, u3_cc_page);
+
+      if ( mug_w != nug_w ) {
+        printf("_ce_patch_verify: mug mismatch (%x, %x)\r\n", mug_w, nug_w);
+        return u3_no;
+      }
+    }
+  }
+  return u3_yes;
+}
+
+/* _ce_patch_free(): free a patch.
+*/
+static void
+_ce_patch_free(u3_cs_patch* pat_u)
+{
+  free(pat_u->con_u);
+  close(pat_u->ctl_i);
+  close(pat_u->mem_i);
+  free(pat_u);
+}
+
 /* _ce_patch_open(): open patch, if any.
 */
 static u3_cs_patch*
 _ce_patch_open(void)
 {
   u3_cs_patch* pat_u;
+  c3_c ful_c[8193];
   c3_i ctl_i, mem_i;
 
   snprintf(ful_c, 8192, "%s", u3P.cpu_c);
@@ -269,13 +234,15 @@ _ce_patch_open(void)
   mkdir(ful_c, 0700);
 
   snprintf(ful_c, 8192, "%s/.urb/control.bin", u3P.cpu_c);
-  if ( -1 == (ctl_i = open(ful_c, O_RDONLY)) ) {
+  if ( -1 == (ctl_i = open(ful_c, O_RDWR)) ) {
     return 0;
   }
 
   snprintf(ful_c, 8192, "%s/.urb/memory.bin", u3P.cpu_c);
-  if ( -1 == (mem_i = open(ful_c, O_RDONLY)) ) {
+  if ( -1 == (mem_i = open(ful_c, O_RDWR)) ) {
     close(ctl_i);
+
+    _ce_patch_delete();
     return 0;
   }
   pat_u = malloc(sizeof(u3_cs_patch));
@@ -287,12 +254,96 @@ _ce_patch_open(void)
     close(pat_u->ctl_i);
     close(pat_u->mem_i);
     free(pat_u);
+
+    _ce_patch_delete();
+    return 0;
+  }
+  if ( u3_no == _ce_patch_verify(pat_u) ) {
+    _ce_patch_free(pat_u);
+    _ce_patch_delete();
     return 0;
   }
   return pat_u;
 }
 
-/* _ce_patch_compose(): make current patch.
+/* _ce_patch_write_page(): write a page of patch memory.
+*/
+static void
+_ce_patch_write_page(u3_cs_patch* pat_u, 
+                     c3_w         pgc_w,
+                     c3_w*        mem_w)
+{
+  if ( -1 == lseek(pat_u->mem_i, (pgc_w << (u3_cc_page + 2)), SEEK_SET) ) {
+    c3_assert(0);
+  }
+  if ( (1 << (u3_cc_page + 2)) != 
+       write(pat_u->mem_i, mem_w, (1 << (u3_cc_page + 2))) )
+  {
+    c3_assert(0);
+  }
+}
+
+/* _ce_patch_count_page(): count a page, producing new counter.
+*/
+static c3_w
+_ce_patch_count_page(c3_w pag_w,
+                     c3_w pgc_w)
+{
+  c3_w blk_w = (pag_w >> 5);
+  c3_w bit_w = (pag_w & 31);
+
+  if ( u3P.dit_w[blk_w] & (1 << bit_w) ) {
+    pgc_w += 1;
+  }
+  return pgc_w;
+}
+
+/* _ce_patch_save_page(): save a page, producing new page counter.
+*/
+static c3_w
+_ce_patch_save_page(u3_cs_patch* pat_u,
+                    c3_w         pag_w,
+                    c3_w         pgc_w)
+{
+  c3_w blk_w = (pag_w >> 5);
+  c3_w bit_w = (pag_w & 31);
+
+  if ( u3P.dit_w[blk_w] & (1 << bit_w) ) {
+    c3_w* mem_w = u3_Loom + (pag_w << u3_cc_page);
+
+    pat_u->con_u->mem_u[pgc_w].pag_w = pag_w;
+    pat_u->con_u->mem_u[pgc_w].mug_w = u3_cr_mug_words(mem_w, u3_cc_page);
+
+    _ce_patch_write_page(pat_u, pgc_w, mem_w);
+
+    if ( -1 == mprotect(u3_Loom + (pag_w << u3_cc_page),
+                        (1 << (u3_cc_page + 2)),
+                        PROT_READ) ) 
+    {
+      c3_assert(0);
+    }
+                    
+    u3P.dit_w[blk_w] &= ~(1 << bit_w); 
+    pgc_w += 1;
+  }
+  return pgc_w;
+}
+
+/* _ce_patch_junk_page(): mark a page as junk.
+*/
+static void
+_ce_patch_junk_page(u3_cs_patch* pat_u,
+                    c3_w         pag_w)
+{
+  if ( -1 == mprotect(u3_Loom + (pag_w << u3_cc_page),
+                      (1 << (u3_cc_page + 2)),
+                      PROT_READ) ) 
+  {
+    c3_assert(0);
+  }
+}
+
+/* _ce_patch_compose(): make and write current patch.
 */
 static u3_cs_patch*
 _ce_patch_compose(void)
@@ -312,34 +363,16 @@ _ce_patch_compose(void)
     sou_w = (swu_w + ((1 << u3_cc_page) - 1)) >> u3_cc_page;
   }
 
-  /* Count dirty pages in northward (low) section.
+  /* Count dirty pages.
   */
   {
     c3_w i_w;
 
-    for ( i_w = 0; i_w < nor_w; i++ ) {
-      c3_w blk_w = (i_w >> 5);
-      c3_w bit_w = (i_w & 31);
-
-      if ( u3P.dit_w[blk_w] & (1 << bit_w) ) {
-        pgs_w += 1;
-      }
+    for ( i_w = 0; i_w < nor_w; i_w++ ) {
+      pgs_w = _ce_patch_count_page(i_w, pgs_w);
     }
-  }
-
-  /* Count dirty pages in southward (high) section.
-  */
-  {
-    c3_w i_w;
-
-    for ( i_w = 0; i_w < sou_w; i++ ) {
-      c3_w j_w   = (u3_cc_pages - (i_w + 1));
-      c3_w blk_w = (j_w >> 5);
-      c3_w bit_w = (j_w & 31);
-
-      if ( u3P.dit_w[blk_w] & (1 << bit_w) ) {
-        pgs_w += 1;
-      }
+    for ( i_w = 0; i_w < sou_w; i_w++ ) {
+      pgs_w = _ce_patch_count_page((u3_cc_pages - (i_w + 1)), pgs_w);
     }
   }
 
@@ -347,39 +380,115 @@ _ce_patch_compose(void)
     return 0;
   }
   else {
-    u3_cs_patch* pat_u = malloc(sizeof u3_cs_patch);
+    u3_cs_patch* pat_u = malloc(sizeof(u3_cs_patch));
     c3_w i_w, pgc_w;
 
     _ce_patch_create(pat_u);
-     
-    /* Build and fill control block.
-    */
-    {
-      pat_u->con_u = malloc(sizeof(u3_cs_control) + 
-                            (pgs_w + sizeof(u3_cs_line)));
+    pat_u->con_u = malloc(sizeof(u3_cs_control) + (pgs_w + sizeof(u3_cs_line)));
+    pgc_w = 0;
 
-      pgc_w = 0;
-      for ( i_w = 0; i_w < nor_w; i_w++ ) {
-        c3_w blk_w = (i_w >> 5);
-        c3_w bit_w = (i_w & 31);
+    for ( i_w = 0; i_w < nor_w; i_w++ ) {
+      pgc_w = _ce_patch_save_page(pat_u, i_w, pgc_w);
+    } 
+    for ( i_w = 0; i_w < sou_w; i_w++ ) {
+      pgc_w = _ce_patch_save_page(pat_u, (u3_cc_pages - (i_w + 1)), pgs_w);
+    }
+    for ( i_w = nor_w; i_w < (u3_cc_pages - sou_w); i_w++ ) {
+      _ce_patch_junk_page(pat_u, i_w);
+    }
+  
+    _ce_patch_write_control(pat_u);
+    return pat_u;
+  }
+}
 
-        if ( u3P.dit_w[blk_w] & (1 << bit_w) ) {
-          pgs_w += 1;
-        }
+/* _ce_sync(): sync a file descriptor.
+*/
+static void
+_ce_sync(c3_i fid_i)
+{
+#if defined(U2_OS_linux)
+  fdatasync(fid_i);
+#elif defined(U2_OS_osx)
+  fcntl(fid_i, F_FULLFSYNC);
+#elif defined(U2_OS_bsd)
+  fsync(fid_i);
+#else
+# error "port: datasync"
+#endif
+}
+
+/* _ce_patch_sync(): make sure patch is synced to disk.
+*/
+static void
+_ce_patch_sync(u3_cs_patch* pat_u)
+{
+  _ce_sync(pat_u->ctl_i);
+  _ce_sync(pat_u->mem_i);
+}
+
+/* _ce_image_sync(): make sure image is synced to disk.
+*/
+static void
+_ce_image_sync(u3_cs_image* img_u)
+{
+  _ce_sync(img_u->fid_i);
+}
+
+/* _ce_patch_apply(): apply patch to image.
+*/
+static void
+_ce_patch_apply(u3_cs_patch* pat_u)
+{
+  c3_w i_w;
+
+  u3P.nor_u.pgs_w = pat_u->con_u->nor_w;
+  ftruncate(u3P.nor_u.fid_i, u3P.nor_u.pgs_w << (u3_cc_page + 2));
+  
+  u3P.sou_u.pgs_w = pat_u->con_u->sou_w;
+  ftruncate(u3P.sou_u.fid_i, u3P.sou_u.pgs_w << (u3_cc_page + 2));
+ 
+  for ( i_w = 0; i_w < pat_u->con_u->pgs_w; i_w++ ) {
+    c3_w pag_w = pat_u->con_u->mem_u[i_w].pag_w;
+    c3_w mem_w[u3_cc_page];
+    c3_i fid_i;
+    c3_w off_w;
+
+    if ( pag_w < pat_u->con_u->nor_w ) {
+      fid_i = u3P.nor_u.fid_i;
+      off_w = pag_w;
+    } 
+    else {
+      fid_i = u3P.sou_u.fid_i;
+      off_w = (u3_cc_pages - (pag_w + 1));
+    }
+ 
+    if ( -1 == read(pat_u->mem_i, mem_w, (1 << (u3_cc_page + 2))) ) {
+      c3_assert(0);
+    }
+    else {
+      if ( -1 == write(fid_i, mem_w, (1 << (u3_cc_page + 2))) ) {
+        c3_assert(0);
       }
+    }
+  }
+}
 
-      c3_assert(0 == (u3P.dit_w[blk_w] & bit_w));
-      u3P.dit_w[blk_w] |= (1 << bit_w);
-    
-
-  /* Handle intermediate section.
-  */
-
-  /* 
-
-  pgs_w = 0;
-  for ( i_w = 0; i_w < (u3_cc_pages >> 5); i_w++ ) {
+/* _ce_image_blit(): apply image to memory.
+*/
+static void
+_ce_image_blit(u3_cs_image* img_u,
+               c3_w*        ptr_w,
+               c3_ws        stp_ws)
+{
+  c3_w i_w;
 
+  lseek(img_u->fid_i, 0, SEEK_SET);
+  for ( i_w=0; i_w < img_u->pgs_w; i_w++ ) {
+    if ( -1 == read(img_u->fid_i, ptr_w, (1 << (u3_cc_page + 2))) ) {
+      c3_assert(0);
+    }
+    ptr_w += stp_ws;
   }
 }
 
@@ -388,7 +497,109 @@ _ce_patch_compose(void)
 void
 u3_ce_save(void)
 {
-  u3_cs_patch* pat_u = _ce_patch_compose();
+  u3_cs_patch* pat_u;
 
-  _ce_patch_save(pat_u);
+  //  Write all dirty pages to disk; clear protection and dirty bits.
+  //
+  //  This has to block the main thread.  All further processing can happen
+  //  in a separate thread, though we can't save again till this completes.
+  //
+  printf("_ce_patch_compose\r\n");
+  pat_u = _ce_patch_compose();
+
+  //  Sync the patch files.
+  //
+  printf("_ce_patch_sync\r\n");
+  _ce_patch_sync(pat_u);
+
+  //  Copy the patch files into the image file.
+  //
+  printf("_ce_patch_apply\r\n");
+  _ce_patch_apply(pat_u);
+
+  //  Sync the image file.
+  //
+  printf("_ce_image_sync\r\n");
+  _ce_image_sync(&u3P.nor_u);
+  _ce_image_sync(&u3P.sou_u);
+
+  //  Delete the patchfile and free it.
+  //
+  printf("_ce_patch_delete\r\n");
+  _ce_patch_delete();
+  printf("_ce_patch_free\r\n");
+  _ce_patch_free(pat_u);
+}
+
+/* u3_ce_boot(): start the memory system.
+*/
+void 
+u3_ce_boot(c3_c* cpu_c)
+{
+  /* Map at fixed address.
+  */
+  {
+    c3_w len_w = (1 << (u3_cc_bits + 2));
+    void* map_v;
+
+    map_v = mmap((void *)u3_Loom,
+                 len_w,
+                 // PROT_READ,
+                 PROT_READ | PROT_WRITE,
+                 (MAP_ANON | MAP_FIXED | MAP_PRIVATE),
+                 -1, 0);
+
+    if ( -1 == (c3_ps)map_v ) {
+      map_v = mmap((void *)0,
+                   len_w,
+                   PROT_READ | PROT_WRITE,
+                   MAP_ANON | MAP_PRIVATE,
+                   -1, 0);
+
+      if ( -1 == (c3_ps)map_v ) {
+        fprintf(stderr, "map failed twice\n");
+      } else {
+        fprintf(stderr, "map failed - try U2_OS_LoomBase %p\n", map_v);
+      }
+      exit(1);
+    }
+    printf("loom: mapped %dMB\n", len_w >> 20);
+  }
+
+  /* Open and apply any patches.
+  */
+  {
+    u3_cs_patch* pat_u;
+
+    if ( 0 != (pat_u = _ce_patch_open()) ) {
+      printf("_ce_patch_apply\r\n");
+      _ce_patch_apply(pat_u);
+
+      printf("_ce_image_sync\r\n");
+      _ce_image_sync(&u3P.nor_u);
+      _ce_image_sync(&u3P.sou_u);
+
+      printf("_ce_patch_delete\r\n");
+      _ce_patch_delete();
+      printf("_ce_patch_free\r\n");
+      _ce_patch_free(pat_u);
+    }
+  }
+
+  /* Open and load, or create, image files.
+  */
+  {
+    u3P.cpu_c = cpu_c;
+    u3P.nor_u.nam_c = "north";
+    u3P.sou_u.nam_c = "south";
+
+    if ( u3_yes == _ce_image_open(&u3P.nor_u) ) {
+      _ce_image_blit(&u3P.nor_u, u3_Loom, (1 << u3_cc_page));
+    }
+    if ( u3_yes == _ce_image_open(&u3P.sou_u) ) {
+      _ce_image_blit(&u3P.sou_u, 
+                     (u3_Loom + (1 << u3_cc_bits) - (1 << u3_cc_page)),
+                     -(1 << u3_cc_page));
+    }
+  }
 }
diff --git a/g/m.c b/g/m.c
index fedfadd61f..6a47552b31 100644
--- a/g/m.c
+++ b/g/m.c
@@ -46,13 +46,7 @@ u3_cm_file(c3_c* pas_c)
 static u3_road*
 _find_north(c3_w* mem_w, c3_w siz_w, c3_w len_w)
 {
-  c3_w*    rut_w = mem_w;
-  c3_w*    hat_w = rut_w;
-  c3_w*    mat_w = ((mem_w + len_w) - siz_w);
-  c3_w*    cap_w = mat_w;
-  u3_road* rod_u = (void*) mat_w;
-
-  return rod_u;
+  return (void *) ((mem_w + len_w) - siz_w);
 }
 
 #if 0
@@ -127,11 +121,9 @@ _boot_parts(void)
 void
 u3_cm_boot(void)
 {
-  if ( u3_so(new_o) ) {
-    u3H = (u3_cs_home *)_boot_north(u3_Loom, c3_wiseof(u3_cs_home), len_w);
-  } 
-  else {
+  c3_w len_w = (1 << u3_cc_bits);
 
+  u3H = (u3_cs_home *)_boot_north(u3_Loom, c3_wiseof(u3_cs_home), len_w);
   u3R = &u3H->rod_u;
 
   _boot_parts();
@@ -142,21 +134,12 @@ u3_cm_boot(void)
 void
 u3_cm_load(void)
 {
+  c3_w len_w = (1 << u3_cc_bits);
+
   u3H = (u3_cs_home *)_find_north(u3_Loom, c3_wiseof(u3_cs_home), len_w);
   u3R = &u3H->rod_u;
 }
 
-/* u3_cm_boot(): make u3R and u3H from nothing.
-*/
-void
-u3_cm_boot(void)
-{
-  u3H = (u3_cs_home *)_boot_north(u3_Loom, c3_wiseof(u3_cs_home), len_w);
-  u3R = &u3H->rod_u;
-
-  _boot_parts();
-}
-
 /* u3_cm_clear(): clear all allocated data in road.
 */
 void
diff --git a/g/v.c b/g/v.c
new file mode 100644
index 0000000000..49e43592ef
--- /dev/null
+++ b/g/v.c
@@ -0,0 +1,479 @@
+/* g/v.c
+**
+** This file is in the public domain.
+*/
+#include <stdio.h>
+#include "all.h"
+
+/* _cv_nock_wish(): call wish through hardcoded interface.
+*/
+static u3_noun
+_cv_nock_wish(u3_noun txt)
+{
+  u3_noun fun = u3_cn_nock_on(u3k(u3A->roc), u3k(u3_cx_at(20, u3A->roc)));
+
+  return u3_cn_slam_on(fun, txt);
+}
+
+/* u3_cv_make(): make a new pier and instantiate pill.
+*/
+void
+u3_cv_make(c3_c* pas_c, u3_noun now)
+{
+  u3_noun sys = u3_cke_cue(u3_cm_file(pas_c));
+
+  printf("cv_make: loaded pill %s, as %x\n", pas_c, u3_cr_mug(sys));
+
+  u3A->ken = u3k(u3h(sys));
+
+  printf("cv_make: kernel %x, mug %x\n", u3A->ken, u3_cr_mug(u3A->ken));
+  {
+    u3_noun cor = u3_cn_nock_on(0, u3k(u3A->ken));
+
+    printf("cv_make: activated kernel\n");
+    u3z(cor);
+  }
+  u3A->roc = u3k(u3t(sys));
+  u3z(sys);
+
+  printf("cv_make: core mug %x\n", u3_cr_mug(u3A->roc));
+
+  u3_cv_time(now);
+  u3_cv_numb();
+
+  {
+    c3_c* wen_c = u3_cr_string(u3A->wen);
+
+    printf("cv_make: time: %s\n", wen_c);
+    free(wen_c);
+  }
+}
+
+/* u3_cv_gate(): load a kernel function.
+*/
+u3_noun
+u3_cv_gate(const c3_c* txt_c)
+{
+  u3_noun txt = u3_ci_string(txt_c);
+  u3_weak gat = u3_ckdb_get(u3k(u3A->yot), u3k(txt));
+
+  if ( u3_none == gat ) {
+    gat = _cv_nock_wish(u3k(txt));
+    u3A->yot = u3_ckdb_put(u3A->yot, u3k(txt), u3k(gat));
+  }
+  u3z(txt);
+  return gat;
+}
+
+/* _cv_mung(): formula wrapper with gate and sample.
+*/
+  static u3_noun
+  _cv_mung_in(u3_noun gam)
+  {
+    u3_noun pro = u3_cn_slam_on(u3k(u3h(gam)), u3k(u3t(gam)));
+
+    u3z(gam); return pro;
+  }
+static u3_noun
+_cv_mung(c3_w sec_w, u3_noun gat, u3_noun sam)
+{
+  u3_noun gam = u3nc(gat, sam);
+
+  return u3_cm_soft(0, _cv_mung_in, gam);
+}
+
+/* u3_cv_pike(): poke with floating core.
+*/
+u3_noun
+u3_cv_pike(u3_noun ovo, u3_noun cor)
+{
+  u3_noun fun = u3_cn_nock_on(cor, u3k(u3_cx_at(42, cor)));
+  u3_noun sam = u3nc(u3k(u3A->now), ovo);
+
+  return _cv_mung(0, fun, sam);
+}
+
+/* u3_cv_nick(): transform enveloped packets, [vir cor].
+*/
+u3_noun
+u3_cv_nick(u3_noun vir, u3_noun cor)
+{
+  if ( u3_nul == vir ) {
+    return u3nt(u3_blip, vir, cor);
+  }
+  else {
+    u3_noun i_vir = u3h(vir);
+    u3_noun pi_vir, qi_vir;
+    u3_noun vix;
+
+    if ( (u3_yes == u3_cr_cell((i_vir=u3h(vir)), &pi_vir, &qi_vir)) &&
+         (u3_yes == u3du(qi_vir)) &&
+         (c3__hear == u3h(qi_vir)) )
+    {
+      u3_noun gon;
+
+      gon = u3_cv_pike(u3k(i_vir), cor);
+      if ( u3_blip != u3h(gon) ) {
+        u3z(vir);
+        return gon;
+      }
+      else {
+        u3_noun viz;
+
+        vix = u3k(u3h(u3t(gon)));
+        cor = u3k(u3t(u3t(gon)));
+        u3z(gon);
+
+        viz = u3_ckb_weld(vix, u3k(u3t(vir)));
+        u3z(vir);
+
+        return u3_cv_nick(viz, cor);
+      }
+    }
+    else {
+      u3_noun nez = u3_cv_nick(u3k(u3t(vir)), cor);
+
+      if ( u3_blip != u3h(nez) ) {
+        u3z(vir);
+        return nez;
+      } else {
+        u3_noun viz;
+
+        viz = u3nc(u3k(i_vir), u3k(u3h(u3t(nez))));
+        cor = u3k(u3t(u3t(nez)));
+
+        u3z(vir);
+        u3z(nez);
+
+        return u3nt(u3_blip, viz, cor);
+      }
+    }
+  }
+}
+
+/* _cv_spat(): spat with toy.
+*/
+static u3_noun
+_cv_spat(u3_noun pox)
+{
+  return u3_do("spat", pox);
+}
+
+/* _cv_nock_poke(): call poke through hardcoded interface.
+*/
+static u3_noun
+_cv_nock_poke(u3_noun ovo)
+{
+  u3_noun fun = u3_cn_nock_on(u3k(u3A->roc), u3k(u3_cx_at(42, u3A->roc)));
+  u3_noun sam, pro;
+
+  sam = u3nc(u3k(u3A->now), ovo);
+#if 1
+  {
+    c3_c*   ovi_c = u3_cr_string(u3h(u3t(ovo)));
+    u3_noun tox = _cv_spat(u3k(u3h(ovo)));
+    c3_c*   tox_c = u3_cr_string(tox);
+
+    printf("poke: %%%s on %s\r\n", ovi_c, tox_c);
+
+    free(tox_c); free(ovi_c); u3z(tox);
+  }
+#endif
+
+#if 1
+  {
+    c3_c*   ovi_c = u3_cr_string(u3h(u3t(ovo)));
+
+    printf("poked: %s\r\n", ovi_c);
+
+    free(ovi_c);
+  }
+#endif
+
+  pro = u3_cn_slam_on(fun, sam);
+  return pro;
+}
+
+/* _cv_nock_peek(): call peek through hardcoded interface.
+*/
+static u3_noun
+_cv_nock_peek(u3_noun hap)
+{
+  u3_noun fun = u3_cn_nock_on(u3k(u3A->roc), u3k(u3_cx_at(87, u3A->roc)));
+  u3_noun sam = u3nc(u3k(u3A->now), hap);
+
+  return u3_cn_slam_on(fun, sam);
+}
+
+/* _cv_nock_keep(): call wait through hardcoded interface.
+*/
+static u3_noun
+_cv_nock_keep(u3_noun hap)
+{
+  u3_noun fun = u3_cn_nock_on(u3k(u3A->roc), u3k(u3_cx_at(4, u3A->roc)));
+  u3_noun sam = u3nc(u3k(u3A->now), hap);
+
+  return u3_cn_slam_on(fun, sam);
+}
+
+/* u3_cv_do(): use a kernel function.
+*/
+u3_noun
+u3_cv_do(const c3_c* txt_c, u3_noun arg)
+{
+  printf("cv_do: fn %s\r\n", txt_c);
+  return u3_cn_slam_on(u3_cv_gate(txt_c), arg);
+}
+
+/* u3_cv_wish(): noun from expression
+*/
+u3_noun
+u3_cv_wish(c3_c* str_c)
+{
+  return _cv_nock_wish(u3_ci_string(str_c));
+}
+
+/* _cv_scot(): print atom.
+*/
+static u3_noun
+_cv_scot(u3_noun dim)
+{
+  return u3_do("scot", dim);
+}
+
+/* u3_cv_time(): set the reck time.
+*/
+void
+u3_cv_time(u3_noun now)
+{
+  u3z(u3A->now);
+  u3A->now = now;
+
+  u3z(u3A->wen);
+  u3A->wen = _cv_scot(u3nc(c3__da, u3k(u3A->now)));
+}
+
+/* u3_cv_numb(): set the instance number.
+*/
+void
+u3_cv_numb()
+{
+  u3A->sev_l = u3_cr_mug(u3A->now);
+  u3z(u3A->sen);
+  u3A->sen = _cv_scot(u3nc(c3__uv, u3A->sev_l));
+}
+
+#if 0
+/* _cv_time_bump(): advance the reck time by a small increment.
+*/
+static void
+_cv_time_bump(u3_reck* rec_u)
+{
+  c3_d bum_d = (1ULL << 48ULL);
+
+  u3A->now = u3_cka_add(u3A->now, u3_ci_chubs(1, &bum_d));
+}
+#endif
+
+/* u3_cv_peek(): query the reck namespace (protected).
+*/
+u3_noun
+u3_cv_peek(u3_noun hap)
+{
+  return _cv_nock_peek(hap);
+}
+
+/* u3_cv_keep(): measure timer.
+*/
+u3_noun
+u3_cv_keep(u3_noun hap)
+{
+  return _cv_nock_keep(hap);
+}
+
+#if 0
+/* _cv_mole(): parse simple atomic mole.
+*/
+static u3_bean
+_cv_mole(u3_noun  fot,
+         u3_noun  san,
+         c3_d*    ato_d)
+{
+  u3_noun uco = u3_do("slay", san);
+  u3_noun p_uco, q_uco, r_uco, s_uco;
+
+  if ( (u3_no == u3_cr_qual(uco, &p_uco, &q_uco, &r_uco, &s_uco)) ||
+       (0 != p_uco) ||
+       (0 != q_uco) ||
+       (u3_no == u3_sing(fot, r_uco)) )
+  {
+    uL(fprintf(uH, "strange mole %s\n", u3_cr_string(san)));
+
+    u3z(fot); u3z(uco); return u3_no;
+  }
+  else {
+    *ato_d = u3_cr_chub(0, s_uco);
+
+    u3z(fot); u3z(uco); return u3_yes;
+  }
+}
+
+/* _cv_lily(): parse little atom.
+*/
+static u3_bean
+_cv_lily(u3_noun fot, u3_noun txt, c3_l* tid_l)
+{
+  c3_d ato_d;
+
+  if ( u3_no == _cv_mole(fot, txt, &ato_d) ) {
+    return u3_no;
+  } else {
+    if ( ato_d >= 0x80000000ULL ) {
+      return u3_no;
+    } else {
+      *tid_l = (c3_l) ato_d;
+
+      return u3_yes;
+    }
+  }
+}
+#endif
+
+/* u3_cv_poke(): insert and apply an input ovum (protected).
+*/
+u3_noun
+u3_cv_poke(u3_noun ovo)
+{
+  return _cv_nock_poke(ovo);
+}
+
+/* u3_cv_http_request(): hear http request on channel (unprotected).
+*/
+void
+u3_cv_http_request(u3_bean sec, u3_noun pox, u3_noun req)
+{
+  // uL(fprintf(uH, "http: request\n"));
+  u3_cv_plan(pox, u3nq(c3__this, sec, 0, req));
+}
+
+/* _cv_tape(): dump a tape, old style.  Don't do this.
+*/
+static void
+_cv_tape(FILE* fil_u, u3_noun tep)
+{
+  u3_noun tap = tep;
+
+  while ( u3_nul != tap ) {
+    c3_c car_c;
+
+    if ( u3h(tap) >= 127 ) {
+      car_c = '?';
+    } else car_c = u3h(tap);
+
+    putc(car_c, fil_u);
+    tap = u3t(tap);
+  }
+  u3z(tep);
+}
+
+/* _cv_wall(): dump a wall, old style.  Don't do this.
+*/
+static void
+_cv_wall(u3_noun wol)
+{
+  FILE* fil_u = stdout;
+  u3_noun wal = wol;
+
+  while ( u3_nul != wal ) {
+    _cv_tape(fil_u, u3k(u3h(wal)));
+
+    putc(13, fil_u);
+    putc(10, fil_u);
+
+    wal = u3t(wal);
+  }
+  u3z(wol);
+}
+
+/* u3_cv_tank(): dump single tank.
+*/
+void
+u3_cv_tank(u3_noun blu, c3_l tab_l, u3_noun tac)
+{
+  u3_cv_punt(blu, tab_l, u3nc(tac, u3_nul));
+}
+
+/* u3_cv_punt(): dump tank list.
+*/
+void
+u3_cv_punt(u3_noun blu, c3_l tab_l, u3_noun tac)
+{
+#if 0
+  u3_noun blu   = u3_term_get_blew(0);
+#endif
+  c3_l    col_l = u3h(blu);
+  u3_noun cat   = tac;
+
+  //  We are calling nock here, but hopefully need no protection.
+  //
+  while ( u3_yes == u3_cr_du(cat) ) {
+    u3_noun wol = u3_dc("wash", u3nc(tab_l, col_l), u3k(u3h(cat)));
+
+    _cv_wall(wol);
+    cat = u3t(cat);
+  }
+  u3z(tac);
+  u3z(blu);
+}
+
+/* u3_cv_sway(): print trace.
+*/
+void
+u3_cv_sway(u3_noun blu, c3_l tab_l, u3_noun tax)
+{
+  u3_noun mok = u3_dc("mook", 2, tax);
+
+  u3_cv_punt(blu, tab_l, u3k(u3t(mok)));
+  u3z(mok);
+}
+
+/* u3_cv_plan(): queue ovum (external).
+*/
+void
+u3_cv_plan(u3_noun pax, u3_noun fav)
+{
+  u3_noun egg = u3nc(pax, fav);
+  u3A->roe = u3nc(u3nc(u3_nul, egg), u3A->roe);
+}
+
+/* u3_cv_plow(): queue multiple ova (external).
+*/
+void
+u3_cv_plow(u3_noun ova)
+{
+  u3_noun ovi = ova;
+
+  while ( u3_nul != ovi ) {
+    u3_noun ovo=u3h(ovi);
+
+    u3_cv_plan(u3k(u3h(ovo)), u3k(u3t(ovo)));
+    ovi = u3t(ovi);
+  }
+  u3z(ova);
+}
+
+/* u3_cv_louse(): last-minute deviltry upon a bail.
+*/
+void
+u3_cv_louse(c3_m how_m)
+{
+#if 0
+  if ( c3__exit == how_m ) {
+    printf("louse: nocks: %d\n", NOX);
+    printf("louse: washing kernel %x %d\n", u3A->ken, u3_co_is_dog(u3A->ken));
+    u3_cm_wash(u3A->ken); 
+
+    printf("kernel %x; washed mug %x\n", u3A->ken, u3_cr_mug(u3A->ken));
+  }
+#endif
+}
diff --git a/include/all.h b/include/all.h
index 61d2a0f842..7f77a7acc7 100644
--- a/include/all.h
+++ b/include/all.h
@@ -48,6 +48,7 @@
     **/
 #     include "n/tune.h"
 #     include "n/noun.h"
+#     include "n/save.h"
 #     include "n/hash.h"
 #     include "n/road.h"
 #     include "n/jets.h"
@@ -58,6 +59,7 @@
     /** g: the u3 layer, functions.
     **/
 #     include "g/a.h"
+#     include "g/e.h"
 #     include "g/h.h"
 #     include "g/i.h"
 #     include "g/j.h"
diff --git a/include/g/e.h b/include/g/e.h
index 660063958c..614ce4af97 100644
--- a/include/g/e.h
+++ b/include/g/e.h
@@ -6,19 +6,15 @@
   **/
     /* u3_ce_fault(): handle a memory event with libsigsegv protocol.
     */
-      static c3_i
+      c3_i
       u3_ce_fault(void* adr_v, c3_i ser_i);
 
-    /* u3_ce_load(): try to load image from checkpoint directory.
+    /* u3_ce_save():
     */
-      u3_o
-      u3_ce_load(const c3_c* pax_c, c3_p adr_p, c3_w len_w)
+      void
+      u3_ce_save(void);
 
-    /* u3_ce_make(): create new image with checkpoint.
+    /* u3_ce_boot(): start the memory system.
     */
-      u3_o
-      u3_ce_make(const c3_c* pax_c);
-
-    /* u3_ce_sync(): save changes with checkpoint dir.
-    */
-      u3_ce_sync(void);
+      void 
+      u3_ce_boot(c3_c* cpu_c);
diff --git a/include/g/m.h b/include/g/m.h
index cdba7c4ab9..029c2407a6 100644
--- a/include/g/m.h
+++ b/include/g/m.h
@@ -4,10 +4,10 @@
 */
     /** System management.
     **/
-      /* u3_cm_boot(): make u3R and u3H from `len` words at `adr`.
+      /* u3_cm_boot(): set up top-level road.
       */
         void
-        u3_cm_boot(c3_p adr_p, c3_w len_w);
+        u3_cm_boot();
 
       /* u3_cm_trap(): setjmp within road.
       */
diff --git a/include/g/v.h b/include/g/v.h
new file mode 100644
index 0000000000..5210484939
--- /dev/null
+++ b/include/g/v.h
@@ -0,0 +1,107 @@
+/* include/g/v.h
+**
+** This file is in the public domain.
+*/
+  /** Arvo macros.
+  **/
+#   define  u3_do(txt_c, arg)         u3_cv_do(txt_c, arg)
+#   define  u3_dc(txt_c, a, b)        u3_cv_do(txt_c, u3nc(a, b))
+#   define  u3_dt(txt_c, a, b, c)     u3_cv_do(txt_c, u3nt(a, b, c))
+#   define  u3_dq(txt_c, a, b, c, d)  u3_cv_do(txt_c, u3nt(a, b, c, d))
+
+  /** Arvo functions.  Rather unstructured.
+  **/
+    /* u3_cv_do(): use a kernel function.
+    */
+      u3_noun
+      u3_cv_do(const c3_c* txt_c, u3_noun arg);
+
+    /* u3_cv_make(): make a new pier by loading a pill.
+    */
+      void
+      u3_cv_make(c3_c* pas_c, u3_noun now);
+
+    /* u3_cv_gate(): load a kernel function.
+    */
+      u3_noun
+      u3_cv_gate(const c3_c* txt_c);
+
+    /* u3_cv_pike(): poke with floating core.
+    */
+      u3_noun
+      u3_cv_pike(u3_noun ovo, u3_noun cor);
+
+    /* u3_cv_nick(): transform enveloped packets, [vir cor].
+    */
+      u3_noun
+      u3_cv_nick(u3_noun vir, u3_noun cor);
+
+    /* u3_cv_do(): use a kernel function.
+    */
+      u3_noun
+      u3_cv_do(const c3_c* txt_c, u3_noun arg);
+
+    /* u3_cv_wish(): noun from expression.
+    */
+      u3_noun
+      u3_cv_wish(c3_c* str_c);
+
+    /* u3_cv_numb(): set the instance number.
+    */
+      void
+      u3_cv_numb(void);
+
+    /* u3_cv_time(): set the reck time.
+    */
+      void
+      u3_cv_time(u3_noun now);
+
+    /* u3_cv_peek(): query the reck namespace.
+    */
+      u3_noun
+      u3_cv_peek(u3_noun hap);
+
+    /* u3_cv_keep(): measure timer.
+    */
+      u3_noun
+      u3_cv_keep(u3_noun hap);
+
+    /* u3_cv_poke(): insert and apply an input ovum (protected).
+    */
+      u3_noun
+      u3_cv_poke(u3_noun ovo);
+
+    /* u3_cv_http_request(): hear http request on channel (unprotected).
+    */
+      void
+      u3_cv_http_request(u3_bean sec, u3_noun pox, u3_noun req);
+
+    /* u3_cv_tank(): dump single tank.
+    */
+      void
+      u3_cv_tank(u3_noun blu, c3_l tab_l, u3_noun tac);
+
+    /* u3_cv_punt(): dump tank list.
+    */
+      void
+      u3_cv_punt(u3_noun blu, c3_l tab_l, u3_noun tac);
+
+    /* u3_cv_sway(): print trace.
+    */
+      void
+      u3_cv_sway(u3_noun blu, c3_l tab_l, u3_noun tax);
+
+    /* u3_cv_plan(): queue ovum (external).
+    */
+      void
+      u3_cv_plan(u3_noun pax, u3_noun fav);
+
+    /* u3_cv_plow(): queue multiple ova (external).
+    */
+      void
+      u3_cv_plow(u3_noun ova);
+
+    /* u3_cv_louse(): last-minute deviltry upon a bail.
+    */
+      void
+      u3_cv_louse(c3_m how_m);
diff --git a/include/n/arvo.h b/include/n/arvo.h
index af72831e07..2231469212 100644
--- a/include/n/arvo.h
+++ b/include/n/arvo.h
@@ -19,6 +19,7 @@
     /* u3_cs_arvo: modern arvo structure.
     */
       typedef struct _u3_cs_arvo {
+        c3_d    ent_d;                    //  event number
         u3_noun yot;                      //  cached gates
         u3_noun now;                      //  current time, as noun
         u3_noun wen;                      //  current time, as text
diff --git a/include/n/glob.h b/include/n/glob.h
index 80817eb6f0..fae8cd79fa 100644
--- a/include/n/glob.h
+++ b/include/n/glob.h
@@ -2,6 +2,16 @@
 **
 ** This file is in the public domain.
 */
+  /** Data structures.
+  **/
+    /* u3_cs_home: all internal (within image) state. 
+    */
+      typedef struct _u3_cs_home {
+        u3_cs_road rod_u;                   //  storage state
+        u3_cs_arvo arv_u;                   //  arvo state
+      } u3_cs_home;
+
+
   /** Globals.
   **/
     /* u3_Loom: base of loom, as a word pointer.
@@ -26,7 +36,7 @@
 
     /* u3_Pool / u3P: global memory control.
     */
-      extern u3_cs_pool u3_Pool;
+      c3_global u3_cs_pool u3_Pool;
 #     define u3P u3_Pool
 
     /* u3_Code: memory code.
diff --git a/include/n/save.h b/include/n/save.h
new file mode 100644
index 0000000000..63e0e71248
--- /dev/null
+++ b/include/n/save.h
@@ -0,0 +1,49 @@
+/* include/n/save.h
+**
+** This file is in the public domain.
+*/
+  /** Data structures.
+  **/
+    /* u3_cs_line: control line.
+    */
+      typedef struct _u3_cs_line {
+        c3_w pag_w; 
+        c3_w mug_w;
+      } u3_cs_line;
+
+    /* u3_cs_control: memory change, control file.
+    */
+      typedef struct _u3_cs_control {
+        c3_d evt_d;                         //  event number
+        c3_w nor_w;                         //  new page count north
+        c3_w sou_w;                         //  new page count south
+        c3_w pgs_w;                         //  number of changed pages
+        u3_cs_line mem_u[0];                //  per page
+      } u3_cs_control;
+
+    /* u3_cs_patch: memory change, top level.
+    */
+      typedef struct _u3_cs_patch {         
+        c3_i           ctl_i;
+        c3_i           mem_i;
+        u3_cs_control* con_u;
+      } u3_cs_patch;
+
+    /* u3_cs_image: memory segment, open file.
+    */
+      typedef struct _u3_cs_image {
+        c3_c* nam_c;                        //  segment name
+        c3_i  fid_i;                        //  open file, or 0
+        c3_w  pgs_w;                        //  length in pages
+      } u3_cs_image;
+
+    /* u3_cs_pool: entire memory system.
+    */
+      typedef struct _u3_cs_pool {
+        c3_c*        cpu_c;                     //  path to 
+        c3_d         evt_d;                     //  last patch written at event
+        c3_w         dit_w[u3_cc_pages >> 5];   //  touched since last save
+        u3_cs_image  nor_u;                     //  north segment
+        u3_cs_image  sou_u;                     //  south segment
+      } u3_cs_pool;
+ 
diff --git a/outside/jhttp/http_parser.c b/outside/jhttp/http_parser.c
index 9474340885..653d0331f5 100755
--- a/outside/jhttp/http_parser.c
+++ b/outside/jhttp/http_parser.c
@@ -1894,13 +1894,15 @@ http_parser_init (http_parser *parser, enum http_parser_type t)
 
 const char *
 http_errno_name(enum http_errno err) {
-  assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0])));
+  // this assert is statically true, making the compiler complain
+  // assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0])));
   return http_strerror_tab[err].name;
 }
 
 const char *
 http_errno_description(enum http_errno err) {
-  assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0])));
+  // this assert is statically true, making the compiler complain
+  // assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0])));
   return http_strerror_tab[err].description;
 }
 
diff --git a/v/main.c b/v/main.c
index d683b18903..0e527336be 100644
--- a/v/main.c
+++ b/v/main.c
@@ -265,15 +265,19 @@ main(c3_i   argc,
     printf("Starting daemon\n");
   }
 
-  //  Seed prng. Don't panic -- just for fuzz testing and election timeouts.
+  //  Seed prng. Don't panic -- just for fuzz testing.
   //
   srand(getpid());
 
   //  Instantiate process globals.
   {
-    /*  Boot memory.
+    /*  Boot the image and checkpoint.
     */
-    u3_cm_boot(U2_OS_LoomBase, (1 << U2_OS_LoomBits));
+    u3_ce_boot(u3_Host.cpu_c);
+
+    /*  Boot the allocator.
+    */
+    u3_cm_boot();
 
     /*  Boot jets.
     */