diff --git a/src/arch/i686.ins b/src/arch/i686.ins
index e47079d..e1b352a 100644
--- a/src/arch/i686.ins
+++ b/src/arch/i686.ins
@@ -28,6 +28,13 @@
 /* instructions */
 /* EMMS		0x0f77		2					*/
 { "emms",	0x0f77,		OP2F, AOT_NONE,    AOT_NONE,   AOT_NONE	},
+/* POR		0x0feb /r	2     mm           mm/m64		*/
+#if 1 /* FIXME doesn't work properly */
+{ "por",	0x0feb,		OP2F, OP_R64_R,    OP_RM64_D0_R,AOT_NONE},
+{ "por",	0x0feb,		OP2F, OP_R64_R,    OP_RM64_D8_R,AOT_NONE},
+{ "por",	0x0feb,		OP2F, OP_R64_R,    OP_RM64_DW_R,AOT_NONE},
+{ "por",	0x0feb,		OP2F, OP_R64_R,    OP_RM64_R64_R,AOT_NONE},
+#endif
 /* PUNPCKLBW	0x0f60 /r	2     mm           mm/m32		*/
 /* FIXME implement */
 /* PUNPCKLBD	0x0f61 /r	2     mm           mm/m32		*/
diff --git a/test/i686.S b/test/i686.S
index c051421..a1f1ac3 100644
--- a/test/i686.S
+++ b/test/i686.S
@@ -1,6 +1,12 @@
 /* $Id$ */
 .text
 	emms					/* 0f 77		*/
+#if 1 /* FIXME doesn't work properly */
+	por	%mm1, [%edx]
+	por	%mm2, [%edx + $0x56]
+	por	%mm3, [%edx + $0x789abc]
+	por	%mm4, %mm5
+#endif
 #if 1 /* FIXME doesn't work properly */
 	pxor	%mm1, [%edx]
 	pxor	%mm2, [%edx + $0x56]