diff --git a/samples/Makefile b/samples/Makefile
index 5a6976f..05d97b6 100644
--- a/samples/Makefile
+++ b/samples/Makefile
@@ -1,7 +1,7 @@
 AS = wdc816as
 ASFLAGS = -L
 
-all: instructions.obj hello1.obj hello2.obj  hello3.obj labels.obj
+all: instructions.obj hello1.obj hello2.obj  hello3.obj labels.obj ref_only.obj
 
 %.obj : %.asm
 	$(AS) $(ASFLAGS) $< -o $@
diff --git a/samples/ref_only.asm b/samples/ref_only.asm
new file mode 100644
index 0000000..c129c45
--- /dev/null
+++ b/samples/ref_only.asm
@@ -0,0 +1,67 @@
+
+	;
+	; test ref-only sections (PAGE0, UDATA)
+	;
+	;
+
+	module part_1
+
+	globals on
+	externs on
+
+	page0
+page0_start
+
+offset_0	ds 2
+offset_2	ds 4
+	ends
+
+	udata
+
+uoffset_0	ds 2
+uoffset_4	ds 4
+			ds 1024-4
+	ends
+
+	code
+	longa on
+	longi on
+	lda offset_0
+	lda offset_2
+	lda uoffset_0
+	lda uoffset_4
+	ends
+
+
+	endmod
+
+	module part_2
+
+	globals on
+	externs on
+
+
+	page0
+uoffset_6	ds 2
+uoffset_8	ds 4
+	ends
+
+	udata
+uoffset_1024 ds 1024
+uoffset_2048 ds 1024
+	ends
+
+	code
+	longa on
+	longi on
+
+	lda #_BEG_PAGE0
+	lda #_END_PAGE0
+	lda #_BEG_UDATA
+	lda #_END_UDATA
+	lda #_BEG_DATA
+	lda #_END_DATA
+	ends
+
+
+	endmod
diff --git a/samples/ref_only.lst b/samples/ref_only.lst
new file mode 100644
index 0000000..9606621
--- /dev/null
+++ b/samples/ref_only.lst
@@ -0,0 +1,83 @@
+  Sun Jan  8 2017 12:55                                                Page 1
+
+
+                     ***************************************
+                     **      WDC 65C816 Macro Assembler   **
+                     **                                   **
+                     **     Version 3.49.1- Feb  6 2006    **
+                     ***************************************
+
+     1                        
+     2                        	;
+     3                        	; test ref-only sections (PAGE0, UDATA)
+     4                        	;
+     5                        	;
+     6                        
+     7                        	module part_1
+     8                        
+     9                        	globals on
+    10                        	externs on
+    11                        
+    12                        	page0
+    13                        page0_start
+    14                        
+    15 00:0000:              offset_0	ds 2
+    16 00:0002:              offset_2	ds 4
+    17 00:0006:              	ends
+    18                        
+    19                        	udata
+    20                        
+    21 00:0000:              uoffset_0	ds 2
+    22 00:0002:              uoffset_4	ds 4
+    23 00:0006:              			ds 1024-4
+    24 00:0402:              	ends
+    25                        
+    26                        	code
+    27                        	longa on
+    28                        	longi on
+    29 00:0000: A5 xx        	lda offset_0
+    30 00:0002: A5 xx        	lda offset_2
+    31 00:0004: AD xx xx     	lda uoffset_0
+    32 00:0007: AD xx xx     	lda uoffset_4
+    33                        	ends
+    34                        
+    35                        
+    36                        	endmod
+    37                        
+    38                        	module part_2
+    39                        
+    40                        	globals on
+    41                        	externs on
+    42                        
+    43                        
+    44                        	page0
+    45 00:0000:              uoffset_6	ds 2
+    46 00:0002:              uoffset_8	ds 4
+    47 00:0006:              	ends
+    48                        
+    49                        	udata
+    50 00:0000:              uoffset_1024 ds 1024
+    51 00:0400:              uoffset_2048 ds 1024
+    52 00:0800:              	ends
+  Sun Jan  8 2017 12:55                                                Page 2
+
+
+    53                        
+    54                        	code
+    55                        	longa on
+    56                        	longi on
+    57                        
+    58 00:0000: A9 xx xx     	lda #_BEG_PAGE0
+    59 00:0003: A9 xx xx     	lda #_END_PAGE0
+    60 00:0006: A9 xx xx     	lda #_BEG_UDATA
+    61 00:0009: A9 xx xx     	lda #_END_UDATA
+    62 00:000C: A9 xx xx     	lda #_BEG_DATA
+    63 00:000F: A9 xx xx     	lda #_END_DATA
+    64                        	ends
+    65                        
+    66                        
+    67                        	endmod
+
+
+      Lines assembled: 67
+      Errors: 0
diff --git a/samples/ref_only.obj b/samples/ref_only.obj
new file mode 100644
index 0000000..18be441
Binary files /dev/null and b/samples/ref_only.obj differ