diff --git a/doc/sysdoc/_calls.127 b/doc/sysdoc/_calls.127
index ff89dd74..5cdf6ce7 100755
--- a/doc/sysdoc/_calls.127
+++ b/doc/sysdoc/_calls.127
@@ -4255,13 +4255,13 @@ T11MP:	PDP-10 to PDP-11 map
 	PDP-10 pages are mapped into segments of variable size in the
 	PDP-11's memory.  The PDP-10 to PDP-11 page map is also directly
 	addressable in memory (it currently lives in absolute locations
-	2,,776000 - 2,,776377).  There are 256. such entries, one for each
-	page in the range 2,,0 - 2,,777777, which are the addresses fielded
+	3,,776000 - 3,,776377).  There are 256. such entries, one for each
+	page in the range 3,,0 - 3,,777777, which are the addresses fielded
 	by the PDP-10 to PDP-11 interface.  ITS allocates these pages
 	and their corresponding map entries randomly as needed.
 
 	When the PDP-10 attempts to access a physical address in the range
-	2,,0 to 2,,777777, the interface uses the 776000 bits to index
+	3,,0 to 3,,777777, the interface uses the 776000 bits to index
 	the map words.  If the appropriate map word does not have its
 	valid bit set, the memory is considered non-existent.  The same
 	is true if the reference would violate the protection bounds.
@@ -4302,6 +4302,11 @@ T11MP:	PDP-10 to PDP-11 map
 		4	The Logo pdp11/45.
 		5	The Micro-Automation pdp11/45.
 
+	The following PDP11s were added at an unknown date.
+
+		6	The Vision 11/40.
+		7	The pdp11 that runs the AI Chaosnet interface.
+
 Errors:
 
   1	NO SUCH DEVICE