diff --git a/tests/asm/int/ctpr-write-1.S b/tests/asm/int/ctpr-write-1.S
new file mode 100644
index 0000000..b613971
--- /dev/null
+++ b/tests/asm/int/ctpr-write-1.S
@@ -0,0 +1,7 @@
+#include "test_start.S"
+
+        movtd,0  0, %ctpr1
+        movtcd,0 0, %ctpr1
+0:
+
+#include "test_end.S"
diff --git a/tests/asm/int/ctpr-write-2.S b/tests/asm/int/ctpr-write-2.S
new file mode 100644
index 0000000..329633a
--- /dev/null
+++ b/tests/asm/int/ctpr-write-2.S
@@ -0,0 +1,6 @@
+#include "test_start.S"
+
+        addd,0 0, 0f, %ctpr1
+0:
+
+#include "test_end.S"
diff --git a/tests/asm/meson.build b/tests/asm/meson.build
index 56e0733..2e1c725 100644
--- a/tests/asm/meson.build
+++ b/tests/asm/meson.build
@@ -129,6 +129,8 @@ asm_tests = {
     'cmpd-1': {},
     'rwd-rrd-1': {},
     'rwd-alc-rrd-1': {},
+    'ctpr-write-1': {},
+    'ctpr-write-2': { 'should_fail': true },
   },
   'sm': {
     'dbl-1': {},