diff --git a/unittests/ASM/TwoByte/0F_A4_2.asm b/unittests/ASM/TwoByte/0F_A4_2.asm
new file mode 100644
index 000000000..a78958b5e
--- /dev/null
+++ b/unittests/ASM/TwoByte/0F_A4_2.asm
@@ -0,0 +1,24 @@
+%ifdef CONFIG
+{
+  "RegData": {
+    "R15": "0xFFFFFFFFFFFFFFFF",
+    "R14": "0x4141414141410000",
+    "R13": "0",
+    "R12": "0",
+    "R11": "0x00000000FFFFFFFF"
+  }
+}
+%endif
+
+mov r15, -1
+mov r14, 0x4141414141410000
+mov r13, 0
+mov r12, 0
+mov r11, -1
+
+shld r14w, r15w, 0
+shld r13d, r15d, 0
+shld r12, r15, 0
+shld r11d, r15d, 0
+
+hlt
diff --git a/unittests/ASM/TwoByte/0F_A5_2.asm b/unittests/ASM/TwoByte/0F_A5_2.asm
index 4e5f6f1ef..54fd9d1e1 100644
--- a/unittests/ASM/TwoByte/0F_A5_2.asm
+++ b/unittests/ASM/TwoByte/0F_A5_2.asm
@@ -4,7 +4,8 @@
     "R15": "0xFFFFFFFFFFFFFFFF",
     "R14": "0x4141414141410000",
     "R13": "0",
-    "R12": "0"
+    "R12": "0",
+    "R11": "0x00000000FFFFFFFF"
   }
 }
 %endif
@@ -14,9 +15,11 @@ mov r15, -1
 mov r14, 0x4141414141410000
 mov r13, 0
 mov r12, 0
+mov r11, -1
 
 shld r14w, r15w, cl
 shld r13d, r15d, cl
 shld r12, r15, cl
+shld r11d, r15d, cl
 
 hlt
diff --git a/unittests/ASM/TwoByte/0F_AC_2.asm b/unittests/ASM/TwoByte/0F_AC_2.asm
new file mode 100644
index 000000000..119ab5c77
--- /dev/null
+++ b/unittests/ASM/TwoByte/0F_AC_2.asm
@@ -0,0 +1,24 @@
+%ifdef CONFIG
+{
+  "RegData": {
+    "R15": "0xFFFFFFFFFFFFFFFF",
+    "R14": "0x4141414141410000",
+    "R13": "0",
+    "R12": "0",
+    "R11": "0x00000000FFFFFFFF"
+  }
+}
+%endif
+
+mov r15, -1
+mov r14, 0x4141414141410000
+mov r13, 0
+mov r12, 0
+mov r11, -1
+
+shrd r14w, r15w, 0
+shrd r13d, r15d, 0
+shrd r12, r15, 0
+shrd r11d, r15d, 0
+
+hlt
diff --git a/unittests/ASM/TwoByte/0F_AD_2.asm b/unittests/ASM/TwoByte/0F_AD_2.asm
index 223ac68c9..aaad50598 100644
--- a/unittests/ASM/TwoByte/0F_AD_2.asm
+++ b/unittests/ASM/TwoByte/0F_AD_2.asm
@@ -4,7 +4,8 @@
     "R15": "0xFFFFFFFFFFFFFFFF",
     "R14": "0x4141414141410000",
     "R13": "0",
-    "R12": "0"
+    "R12": "0",
+    "R11": "0x00000000FFFFFFFF"
   }
 }
 %endif
@@ -14,9 +15,11 @@ mov r15, -1
 mov r14, 0x4141414141410000
 mov r13, 0
 mov r12, 0
+mov r11, -1
 
 shrd r14w, r15w, cl
 shrd r13d, r15d, cl
 shrd r12, r15, cl
+shrd r11d, r15d, cl
 
 hlt