diff --git a/table/8051.cpp b/table/8051.cpp
index 9b313988..c5196856 100644
--- a/table/8051.cpp
+++ b/table/8051.cpp
@@ -5,7 +5,7 @@
  *     Web: https://www.mikekohn.net/
  * License: GPLv3
  *
- * Copyright 2010-2022 by Michael Kohn
+ * Copyright 2010-2024 by Michael Kohn
  *
  */
 
@@ -273,3 +273,10 @@ struct _table_8051 table_8051[] =
   { "mov",   { OP_REG,        OP_A,         OP_NONE    },  7 }, // 0xff
 };
 
+struct _table_8051_a251 table_8051_a251[] =
+{
+  { "jsle", 0x08, OP_RELADDR },
+// A-63
+  { NULL, 0, 0 }
+};
+
diff --git a/table/8051.h b/table/8051.h
index ee4f8196..314054b3 100644
--- a/table/8051.h
+++ b/table/8051.h
@@ -43,7 +43,15 @@ struct _table_8051
   int8_t range;   // range of register or page (r0, r1, r2 etc)
 };
 
+struct _table_8051_a251
+{
+  const char *name;
+  uint8_t opcode;
+  uint8_t type;
+};
+
 extern struct _table_8051 table_8051[];
+extern struct _table_8051_a251 table_8051_a251[];
 
 #endif