diff --git a/Source/DSPSpy/tests/if_test.ds b/Source/DSPSpy/tests/if_test.ds
index 4f1eca1e6a..8260518423 100644
--- a/Source/DSPSpy/tests/if_test.ds
+++ b/Source/DSPSpy/tests/if_test.ds
@@ -7,55 +7,88 @@ lri $SR, #0x0001
 
 ifs
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 1
 
 ifns
 lri $IX0, #0x1338	
-call send_back
+call send_back 	; 2
 
 lri $IX0, #0x0000	
 lri $SR, #0x0002
 
 ifs
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 3
 
 ifns
 lri $IX0, #0x1338	
-call send_back
+call send_back 	; 4
 
 lri $IX0, #0x0000
 lri $SR, #0x0004
 
 ifs
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 5
 
 ifns
 lri $IX0, #0x1338	
-call send_back
+call send_back	; 6
 
 lri $IX0, #0x0000
 lri $SR, #0x0008
 
 ifs
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 7
 
 ifns
 lri $IX0, #0x1338	
-call send_back
+call send_back 	; 8
 
 lri $IX0, #0x0000
 lri $SR, #0x000a
 
 ifs
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 9
 
 ifns
 lri $IX0, #0x1338	
-call send_back	
+call send_back	; 10
+
+lri $IX0, #0x0000
+lri $SR, #0x0010
+
+ifs
+lri $IX0, #0x1337	
+call send_back 	; 11
+
+ifns
+lri $IX0, #0x1338	
+call send_back	; 12
+
+lri $IX0, #0x0000
+lri $SR, #0x0020
+
+ifs
+lri $IX0, #0x1337	
+call send_back 	; 13
+
+ifns
+lri $IX0, #0x1338	
+call send_back	; 14
+
+lri $IX0, #0x0000
+lri $SR, #0x0040
+
+ifs
+lri $IX0, #0x1337	
+call send_back 	; 15
+
+ifns
+lri $IX0, #0x1338	
+call send_back	; 16
 
 ; We're done, DO NOT DELETE THIS LINE
 jmp end_of_test
diff --git a/Source/DSPSpy/tests/if_test2.ds b/Source/DSPSpy/tests/if_test2.ds
index a548c6f64e..a4041e4c10 100644
--- a/Source/DSPSpy/tests/if_test2.ds
+++ b/Source/DSPSpy/tests/if_test2.ds
@@ -6,55 +6,88 @@ lri $SR, #0x0001
 
 ifg
 lri $IX0, #0x1337	
-call send_back
+call send_back ; 1
 
 ifle
 lri $IX0, #0x1338	
-call send_back
+call send_back ; 2
 
 lri $IX0, #0x0000	
-  lri $SR, #0x0002
+lri $SR, #0x0002
 
 ifg
 lri $IX0, #0x1337	
-call send_back
+call send_back ; 3
 
 ifle
 lri $IX0, #0x1338	
-call send_back
+call send_back ; 4
 
 lri $IX0, #0x0000
 lri $SR, #0x0004
 
 ifg
 lri $IX0, #0x1337	
-call send_back
+call send_back ; 5
 
 ifle
 lri $IX0, #0x1338	
-call send_back
+call send_back ; 6
 
 lri $IX0, #0x0000
 lri $SR, #0x0008
 
 ifg
 lri $IX0, #0x1337	
-	call send_back
+call send_back ; 7
 
 ifle
 lri $IX0, #0x1338	
-call send_back
+call send_back ; 8
 
 lri $IX0, #0x0000
 lri $SR, #0x000a
 
 ifg
 lri $IX0, #0x1337	
-call send_back
+call send_back ; 9
 
 ifle
 lri $IX0, #0x1338	
-call send_back	
+call send_back ; 10
+
+lri $IX0, #0x0000
+lri $SR, #0x0010
+
+ifg
+lri $IX0, #0x1337	
+call send_back 	; 11
+
+ifle
+lri $IX0, #0x1338	
+call send_back	; 12
+
+lri $IX0, #0x0000
+lri $SR, #0x0020
+
+ifg
+lri $IX0, #0x1337	
+call send_back 	; 13
+
+ifle
+lri $IX0, #0x1338	
+call send_back	; 14
+
+lri $IX0, #0x0000
+lri $SR, #0x0040
+
+ifg
+lri $IX0, #0x1337	
+call send_back 	; 15
+
+ifle
+lri $IX0, #0x1338	
+call send_back	; 16
 
 ; We're done, DO NOT DELETE THIS LINE
 jmp end_of_test
diff --git a/Source/DSPSpy/tests/if_test3.ds b/Source/DSPSpy/tests/if_test3.ds
index 95f10080cd..a2c844dded 100644
--- a/Source/DSPSpy/tests/if_test3.ds
+++ b/Source/DSPSpy/tests/if_test3.ds
@@ -6,55 +6,88 @@ lri $SR, #0x0001
 
 ifl
 lri $IX0, #0x1337	
-call send_back
+call send_back ; 1
 
 ifge
 lri $IX0, #0x1338	
-call send_back
+call send_back 	; 2
 
 lri $IX0, #0x0000	
 lri $SR, #0x0002
 
 ifl
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 3
 
 ifge
 lri $IX0, #0x1338	
-call send_back
+call send_back 	; 4
 
 lri $IX0, #0x0000
 lri $SR, #0x0004
 
 ifl
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 5
 
 ifge
 lri $IX0, #0x1338	
-call send_back
+call send_back 	; 6
 
 lri $IX0, #0x0000
 lri $SR, #0x0008
 
 ifl
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 7
 
 ifge
 lri $IX0, #0x1338	
-call send_back
+call send_back 	; 8
 
 lri $IX0, #0x0000
 lri $SR, #0x000a
 
 ifl
 lri $IX0, #0x1337	
-call send_back
+call send_back 	; 9
 
 ifge
 lri $IX0, #0x1338	
-call send_back	
+call send_back	; 10
+
+lri $IX0, #0x0000
+lri $SR, #0x0010
+
+ifl
+lri $IX0, #0x1337	
+call send_back 	; 11
+
+ifge
+lri $IX0, #0x1338	
+call send_back	; 12
+
+lri $IX0, #0x0000
+lri $SR, #0x0020
+
+ifl
+lri $IX0, #0x1337	
+call send_back 	; 13
+
+ifge
+lri $IX0, #0x1338	
+call send_back	; 14
+
+lri $IX0, #0x0000
+lri $SR, #0x0040
+
+ifl
+lri $IX0, #0x1337	
+call send_back 	; 15
+
+ifge
+lri $IX0, #0x1338	
+call send_back	; 16
 
 ; We're done, DO NOT DELETE THIS LINE
 jmp end_of_test
diff --git a/Source/DSPSpy/tests/if_test4.ds b/Source/DSPSpy/tests/if_test4.ds
new file mode 100644
index 0000000000..c23f169ce1
--- /dev/null
+++ b/Source/DSPSpy/tests/if_test4.ds
@@ -0,0 +1,93 @@
+; This test checks the effect of various SR flags over ifz and ifnz
+include "dsp_base.inc"
+
+lri $IX0, #0x0000
+lri $SR, #0x0001
+
+ifz
+lri $IX0, #0x1337	
+call send_back ; 1
+
+ifnz
+lri $IX0, #0x1338	
+call send_back ; 2
+
+lri $IX0, #0x0000	
+lri $SR, #0x0002
+
+ifz
+lri $IX0, #0x1337	
+call send_back ; 3
+
+ifnz
+lri $IX0, #0x1338	
+call send_back ; 4
+
+lri $IX0, #0x0000
+lri $SR, #0x0004
+
+ifz
+lri $IX0, #0x1337	
+call send_back ; 5
+
+ifnz
+lri $IX0, #0x1338	
+call send_back ; 6
+
+lri $IX0, #0x0000
+lri $SR, #0x0008
+
+ifz
+lri $IX0, #0x1337	
+call send_back ; 7
+
+ifnz
+lri $IX0, #0x1338	
+call send_back ; 8
+
+lri $IX0, #0x0000
+lri $SR, #0x000a
+
+ifz
+lri $IX0, #0x1337	
+call send_back ; 9
+
+ifnz
+lri $IX0, #0x1338	
+call send_back ; 10
+
+lri $IX0, #0x0000
+lri $SR, #0x0010
+
+ifz
+lri $IX0, #0x1337	
+call send_back 	; 11
+
+ifnz
+lri $IX0, #0x1338	
+call send_back	; 12
+
+lri $IX0, #0x0000
+lri $SR, #0x0020
+
+ifz
+lri $IX0, #0x1337	
+call send_back 	; 13
+
+ifnz
+lri $IX0, #0x1338	
+call send_back	; 14
+
+lri $IX0, #0x0000
+lri $SR, #0x0040
+
+ifz
+lri $IX0, #0x1337	
+call send_back 	; 15
+
+ifnz
+lri $IX0, #0x1338	
+call send_back	; 16
+
+; We're done, DO NOT DELETE THIS LINE
+jmp end_of_test
diff --git a/Source/DSPSpy/tests/if_test5.ds b/Source/DSPSpy/tests/if_test5.ds
new file mode 100644
index 0000000000..7cfcffc842
--- /dev/null
+++ b/Source/DSPSpy/tests/if_test5.ds
@@ -0,0 +1,93 @@
+; This test checks the effect of various SR flags over iflz and ifnlz
+include "dsp_base.inc"
+
+lri $IX0, #0x0000
+lri $SR, #0x0001
+
+iflz
+lri $IX0, #0x1337	
+call send_back ; 1
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back ; 2
+
+lri $IX0, #0x0000	
+lri $SR, #0x0002
+
+iflz
+lri $IX0, #0x1337	
+call send_back ; 3
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back ; 4
+
+lri $IX0, #0x0000
+lri $SR, #0x0004
+
+iflz
+lri $IX0, #0x1337	
+call send_back ; 5
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back ; 6
+
+lri $IX0, #0x0000
+lri $SR, #0x0008
+
+iflz
+lri $IX0, #0x1337	
+call send_back ; 7
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back ; 8
+
+lri $IX0, #0x0000
+lri $SR, #0x000a
+
+iflz
+lri $IX0, #0x1337	
+call send_back ; 9
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back ; 10
+
+lri $IX0, #0x0000
+lri $SR, #0x0010
+
+iflz
+lri $IX0, #0x1337	
+call send_back 	; 11
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back	; 12
+
+lri $IX0, #0x0000
+lri $SR, #0x0020
+
+iflz
+lri $IX0, #0x1337	
+call send_back 	; 13
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back	; 14
+
+lri $IX0, #0x0000
+lri $SR, #0x0040
+
+iflz
+lri $IX0, #0x1337	
+call send_back 	; 15
+
+ifnlz
+lri $IX0, #0x1338	
+call send_back	; 16
+
+; We're done, DO NOT DELETE THIS LINE
+jmp end_of_test