--- a/src/ntheap.c	Mon Aug 13 11:12:06 2007 +0200
+++ b/src/ntheap.c	Mon Aug 13 11:13:30 2007 +0200
@@ -38,38 +38,10 @@
 int edata;
 int etext;
 
-/* The major and minor versions of NT.  */
-int nt_major_version;
-int nt_minor_version;
-
-/* Distinguish between Windows NT and Windows 95.  */
-int os_subtype;
-
 /* Cache information describing the NT system for later use.  */
 void
 cache_system_info (void)
 {
-  union 
-    {
-      struct info 
-	{
-	  char  major;
-	  char  minor;
-	  short platform;
-	} info;
-      DWORD data;
-    } version;
-
-  /* Cache the version of the operating system.  */
-  version.data = GetVersion ();
-  nt_major_version = version.info.major;
-  nt_minor_version = version.info.minor;
-
-  if (version.info.platform & 0x8000)
-    os_subtype = OS_WIN95;
-  else
-    os_subtype = OS_NT;
-
   /* Cache page size, allocation unit, processor type, etc.  */
   GetSystemInfo (&sysinfo_cache);
   syspage_mask = sysinfo_cache.dwPageSize - 1;
@@ -148,7 +120,8 @@
      still a pretty decent arena to play in!  */
 
   unsigned long base = 0x01B00000;   /*  27MB */
-  unsigned long end  = 1 << VALBITS; /* 256MB */
+  /* Temporary hack for the non-starting problem - use 28 (256Mb) rather than VALBITS (1Gb) */
+  unsigned long end  = 1 << 28;      /* 256MB */
   void *ptr = NULL;
 
 #define NTHEAP_PROBE_BASE 1
@@ -189,20 +162,6 @@
       if (!data_region_base)
 	return NULL;
 
-#ifndef USE_MINIMAL_TAGBITS
-      /* Ensure that the addresses don't use the upper tag bits since
-	 the Lisp type goes there.  */
-#ifdef USE_UNION_TYPE
-      if (((unsigned long) data_region_base & ~((1U << VALBITS) - 1)) != 0)
-#else
-      if (((unsigned long) data_region_base & ~VALMASK) != 0)
-#endif
-	{
-	  printf ("Error: The heap was allocated in upper memory.\n");
-	  exit (1);
-	}
-#endif
-
       data_region_end = data_region_base;
       real_data_region_end = data_region_end;
       data_region_size = get_reserved_heap_size ();
@@ -261,7 +220,7 @@
   return result;
 }
 
-#ifndef CANNOT_DUMP
+#if !defined (CANNOT_DUMP) && !defined(HEAP_IN_DATA) && !defined(PDUMP)
 
 /* Recreate the heap from the data that was dumped to the executable.
    EXECUTABLE_PATH tells us where to find the executable.  */