diff --git a/src/main/acio/acio.h b/src/main/acio/acio.h
index 0636e95..f92855a 100644
--- a/src/main/acio/acio.h
+++ b/src/main/acio/acio.h
@@ -44,6 +44,8 @@ enum ac_io_node_type {
     AC_IO_NODE_TYPE_PANB = 0x090E0000,
     AC_IO_NODE_TYPE_BMPU = 0x0B000000,
     AC_IO_NODE_TYPE_BI2A = 0x0D060000,
+    AC_IO_NODE_TYPE_BIOB = 0x0D050100,
+    AC_IO_NODE_TYPE_BI2B = 0x0D060100,
 };
 
 #pragma pack(push, 1)
diff --git a/src/main/bio2/bio2.h b/src/main/bio2/bio2.h
index 5a95f7a..370bc30 100644
--- a/src/main/bio2/bio2.h
+++ b/src/main/bio2/bio2.h
@@ -11,6 +11,7 @@ enum bio2_bi2a_cmd {
     BIO2_BI2A_CMD_INIT = 0x0100,
     BIO2_BI2A_CMD_WATCHDOG = 0x0120,
     BIO2_BI2A_CMD_POLL = 0x0152, // For IIDX
+    BIO2_BI2A_CMD_POLL_WD = 0x0153, // For IIDX
     // For games using libacio for BIO2 communication
     BIO2_BI2A_CMD_ACIO_POLL_NOWD = 0x0112,
     BIO2_BI2A_CMD_ACIO_POLL_WD = 0x0113,
@@ -18,4 +19,4 @@ enum bio2_bi2a_cmd {
     BIO2_BI2A_CMD_TAPELED_SEND = 0x0141,
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/src/main/bio2emu-iidx/bi2a.c b/src/main/bio2emu-iidx/bi2a.c
index 3c90d24..cd2b56a 100644
--- a/src/main/bio2emu-iidx/bi2a.c
+++ b/src/main/bio2emu-iidx/bi2a.c
@@ -91,11 +91,12 @@ void bio2_emu_bi2a_dispatch_request(
             break;
 
         case BIO2_BI2A_CMD_WATCHDOG:
-            log_misc("BIO2_BI2A_CMD_WATCHDOGX(%d)", req->addr);
+            log_misc("BIO2_BI2A_CMD_WATCHDOG(%d)", req->addr);
             bio2_emu_bi2a_send_status(&bio2port->acio, req, 0x00);
             break;
 
         case BIO2_BI2A_CMD_POLL:
+        case BIO2_BI2A_CMD_POLL_WD:
             // log_misc("BIO2_BI2A_CMD_POLL");
             bio2_emu_bi2a_send_state(&bio2port->acio, req);
             break;