diff --git a/src/jtag.cpp b/src/jtag.cpp
index 7847def882..5002a93517 100644
--- a/src/jtag.cpp
+++ b/src/jtag.cpp
@@ -200,7 +200,7 @@ int Jtag::detectChain(int max_dev)
 			 * GateMate and Efinix Trion T4/T8 devices
 			 */
 			if (tmp != 0x20000001)
-				found = search_and_insert_device_with_idcode(tmp & 0x0fffffff);
+				found = search_and_insert_device_with_idcode(tmp);
 			if (!found) /* if masked not found -> search for full */
 				found = search_and_insert_device_with_idcode(tmp);
 
@@ -231,7 +231,7 @@ bool Jtag::search_and_insert_device_with_idcode(uint32_t idcode)
 	if (dev != fpga_list.end())
 		irlength = dev->second.irlength;
 	if (irlength == -1) {
-		auto misc = misc_dev_list.find(idcode);
+		auto misc = misc_dev_list.find(idcode & MISC_DEV_MASK);
 		if (misc != misc_dev_list.end())
 			irlength = misc->second.irlength;
 	}
diff --git a/src/main.cpp b/src/main.cpp
index 91c4e4ab28..3d18e6ac1c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -470,11 +470,11 @@ int main(int argc, char **argv)
 				fpga_list[t].family.c_str(),
 				fpga_list[t].model.c_str());
 				printf("\tirlength %d\n", fpga_list[t].irlength);
-			} else if (misc_dev_list.find(t) != misc_dev_list.end()) {
+			} else if (misc_dev_list.find(t & MISC_DEV_MASK) != misc_dev_list.end()) {
 				printf("\tidcode   0x%x\n\ttype     %s\n\tirlength %d\n",
 				t,
-				misc_dev_list[t].name.c_str(),
-				misc_dev_list[t].irlength);
+				misc_dev_list[t & MISC_DEV_MASK].name.c_str(),
+				misc_dev_list[t & MISC_DEV_MASK].irlength);
 			}
 		}
 		if (args.detect == true) {
diff --git a/src/part.hpp b/src/part.hpp
index 548e1766df..817d249a20 100644
--- a/src/part.hpp
+++ b/src/part.hpp
@@ -177,10 +177,11 @@ typedef struct {
 	int irlength;
 } misc_device;
 
+#define MISC_DEV_MASK 0x0ff00fffU
 static std::map <uint32_t, misc_device> misc_dev_list = {
-	{0x4ba00477, {"ARM cortex A9",         4}},
-	{0x5ba00477, {"ARM cortex A53",        4}},
-	{0xfffffffe, {"ZynqMP dummy device",   12}},
+	{0x0ba00477, {"ADIv5 JTAG-DP port",    4}},
+	{0x06400041, {"STM32 Device",          4}},
+	{0x0ff00ffe, {"ZynqMP dummy device",   12}},
 };
 
 /* list of JTAG manufacturer ID */