diff --git a/c64/basic/,stubs_math/aabc.interop b/c64/basic/,stubs_math/aabc.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/aabc.interop
+++ b/c64/basic/,stubs_math/aabc.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/b1aa.interop b/c64/basic/,stubs_math/b1aa.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/b1aa.interop
+++ b/c64/basic/,stubs_math/b1aa.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/b391.interop b/c64/basic/,stubs_math/b391.interop
index 0d18777c..62124f9a 100644
--- a/c64/basic/,stubs_math/b391.interop
+++ b/c64/basic/,stubs_math/b391.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example codoe utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/b3a2.interop b/c64/basic/,stubs_math/b3a2.interop
index 0d18777c..8b4c9dc2 100644
--- a/c64/basic/,stubs_math/b3a2.interop
+++ b/c64/basic/,stubs_math/b3a2.interop
@@ -1,3 +1,5 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
+
diff --git a/c64/basic/,stubs_math/b7b5.interop b/c64/basic/,stubs_math/b7b5.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/b7b5.interop
+++ b/c64/basic/,stubs_math/b7b5.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/b7f7.interop b/c64/basic/,stubs_math/b7f7.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/b7f7.interop
+++ b/c64/basic/,stubs_math/b7f7.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/b849.interop b/c64/basic/,stubs_math/b849.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/b849.interop
+++ b/c64/basic/,stubs_math/b849.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/b9ea.interop b/c64/basic/,stubs_math/b9ea.interop
index 0d18777c..8b4c9dc2 100644
--- a/c64/basic/,stubs_math/b9ea.interop
+++ b/c64/basic/,stubs_math/b9ea.interop
@@ -1,3 +1,5 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
+
diff --git a/c64/basic/,stubs_math/bae2.interop b/c64/basic/,stubs_math/bae2.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bae2.interop
+++ b/c64/basic/,stubs_math/bae2.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bafe.interop b/c64/basic/,stubs_math/bafe.interop
index 0d18777c..8b4c9dc2 100644
--- a/c64/basic/,stubs_math/bafe.interop
+++ b/c64/basic/,stubs_math/bafe.interop
@@ -1,3 +1,5 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
+
diff --git a/c64/basic/,stubs_math/bc2b.interop b/c64/basic/,stubs_math/bc2b.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bc2b.interop
+++ b/c64/basic/,stubs_math/bc2b.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bc39.interop b/c64/basic/,stubs_math/bc39.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bc39.interop
+++ b/c64/basic/,stubs_math/bc39.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bc3c.interop b/c64/basic/,stubs_math/bc3c.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bc3c.interop
+++ b/c64/basic/,stubs_math/bc3c.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bc58.interop b/c64/basic/,stubs_math/bc58.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bc58.interop
+++ b/c64/basic/,stubs_math/bc58.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bc5b.interop b/c64/basic/,stubs_math/bc5b.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bc5b.interop
+++ b/c64/basic/,stubs_math/bc5b.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bc9b.interop b/c64/basic/,stubs_math/bc9b.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bc9b.interop
+++ b/c64/basic/,stubs_math/bc9b.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bccc.interop b/c64/basic/,stubs_math/bccc.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bccc.interop
+++ b/c64/basic/,stubs_math/bccc.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bf71.interop b/c64/basic/,stubs_math/bf71.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bf71.interop
+++ b/c64/basic/,stubs_math/bf71.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bf74.interop b/c64/basic/,stubs_math/bf74.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bf74.interop
+++ b/c64/basic/,stubs_math/bf74.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bf78.interop b/c64/basic/,stubs_math/bf78.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bf78.interop
+++ b/c64/basic/,stubs_math/bf78.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bf7b.interop b/c64/basic/,stubs_math/bf7b.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bf7b.interop
+++ b/c64/basic/,stubs_math/bf7b.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/bfed.interop b/c64/basic/,stubs_math/bfed.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/,stubs_math/bfed.interop
+++ b/c64/basic/,stubs_math/bfed.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/,stubs_math/e264.interop b/c64/basic/,stubs_math/e264.interop
index 0d18777c..8e0ca383 100644
--- a/c64/basic/,stubs_math/e264.interop
+++ b/c64/basic/,stubs_math/e264.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Usage example:
+- https://www.lemon64.com/forum/viewtopic.php?t=10492
diff --git a/c64/basic/,stubs_math/e26b.interop b/c64/basic/,stubs_math/e26b.interop
index 0d18777c..8e0ca383 100644
--- a/c64/basic/,stubs_math/e26b.interop
+++ b/c64/basic/,stubs_math/e26b.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Usage example:
+- https://www.lemon64.com/forum/viewtopic.php?t=10492
diff --git a/c64/basic/,stubs_math/e2b4.interop b/c64/basic/,stubs_math/e2b4.interop
index 0d18777c..8e0ca383 100644
--- a/c64/basic/,stubs_math/e2b4.interop
+++ b/c64/basic/,stubs_math/e2b4.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Usage example:
+- https://www.lemon64.com/forum/viewtopic.php?t=10492
diff --git a/c64/basic/math/b853.interop b/c64/basic/math/b853.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/math/b853.interop
+++ b/c64/basic/math/b853.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/math/b86a.interop b/c64/basic/math/b86a.interop
index 0d18777c..1b7d0105 100644
--- a/c64/basic/math/b86a.interop
+++ b/c64/basic/math/b86a.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- http://cbm-hackers.2304266.n4.nabble.com/unsigned-to-float-td4668532.html#a4668556
diff --git a/c64/basic/math/ba28.interop b/c64/basic/math/ba28.interop
index 0d18777c..0a30d506 100644
--- a/c64/basic/math/ba28.interop
+++ b/c64/basic/math/ba28.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://www.lemon64.com/forum/viewtopic.php?t=42934
diff --git a/c64/basic/math/ba2b.interop b/c64/basic/math/ba2b.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/math/ba2b.interop
+++ b/c64/basic/math/ba2b.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/math/ba8c.interop b/c64/basic/math/ba8c.interop
index 0d18777c..0a30d506 100644
--- a/c64/basic/math/ba8c.interop
+++ b/c64/basic/math/ba8c.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://www.lemon64.com/forum/viewtopic.php?t=42934
diff --git a/c64/basic/math/bb0f.interop b/c64/basic/math/bb0f.interop
index 0d18777c..50ba7802 100644
--- a/c64/basic/math/bb0f.interop
+++ b/c64/basic/math/bb0f.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://codebase64.org/doku.php?id=base:mandelbrot
diff --git a/c64/basic/math/bbd4.interop b/c64/basic/math/bbd4.interop
index 0d18777c..50ba7802 100644
--- a/c64/basic/math/bbd4.interop
+++ b/c64/basic/math/bbd4.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://codebase64.org/doku.php?id=base:mandelbrot
diff --git a/c64/basic/math/bc0c.interop b/c64/basic/math/bc0c.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/math/bc0c.interop
+++ b/c64/basic/math/bc0c.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/math/bc0f.interop b/c64/basic/math/bc0f.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/math/bc0f.interop
+++ b/c64/basic/math/bc0f.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/math/bfb4.interop b/c64/basic/math/bfb4.interop
index 0d18777c..c4ad4680 100644
--- a/c64/basic/math/bfb4.interop
+++ b/c64/basic/math/bfb4.interop
@@ -1,3 +1,4 @@
 This is an important floating point math routine, documented in many places.
 
-XXX - try to find real-life example
+Example code utilizing this routine:
+- https://github.com/irmen/prog8/blob/master/compiler/res/prog8lib/c64flt.p8
diff --git a/c64/basic/math/e09a.interop b/c64/basic/math/e09a.interop
index 5c452b05..c876324b 100644
--- a/c64/basic/math/e09a.interop
+++ b/c64/basic/math/e09a.interop
@@ -1,5 +1,5 @@
 This is an important floating point math routine, see:
-
 - https://www.atarimagazines.com/compute/issue72/random_numbers.php
 
-XXX - try to find real-life example
+Example code utilizing the routine:
+- https://stackoverflow.com/questions/44937759/getting-random-number-from-6502-assembler/44937995
diff --git a/c64/basic/math/e0be.interop b/c64/basic/math/e0be.interop
index 5c452b05..c42eaa6a 100644
--- a/c64/basic/math/e0be.interop
+++ b/c64/basic/math/e0be.interop
@@ -1,5 +1,5 @@
 This is an important floating point math routine, see:
-
 - https://www.atarimagazines.com/compute/issue72/random_numbers.php
 
-XXX - try to find real-life example
+Example coode utilizing this routine:
+- https://www.lemon64.com/forum/viewtopic.php?t=56934&sid=387926a3f1d6373a384c0f7328b00c30
diff --git a/c64/kernal/tape/tape_normal_get_data_1.s b/c64/kernal/tape/tape_normal_get_data_1.s
index 8b07ccb7..fd1242c6 100644
--- a/c64/kernal/tape/tape_normal_get_data_1.s
+++ b/c64/kernal/tape/tape_normal_get_data_1.s
@@ -22,8 +22,8 @@ tape_normal_get_data_1:
 	lda #$00
 	sta RIPRTY
 #if !CONFIG_TAPE_NO_ERROR_CORRECTION
-	sta PTR1
 	sta PTR2
+	sta PTR1
 #endif
 
 	// FALLTROUGH