diff --git a/src/device/pi.rs b/src/device/pi.rs
index dcbf518..f3dc713 100644
--- a/src/device/pi.rs
+++ b/src/device/pi.rs
@@ -13,7 +13,8 @@ const PI_BSD_DOM2_LAT_REG: u32 = 9;
 const PI_BSD_DOM2_PWD_REG: u32 = 10;
 const PI_BSD_DOM2_PGS_REG: u32 = 11;
 const PI_BSD_DOM2_RLS_REG: u32 = 12;
-pub const PI_REGS_COUNT: u32 = 13;
+//const UNKNOWN_REG: u32 = 13; //LibDragon
+pub const PI_REGS_COUNT: u32 = 14;
 
 /* PI_STATUS - read */
 const PI_STATUS_DMA_BUSY: u32 = 1 << 0;
diff --git a/src/device/rdram.rs b/src/device/rdram.rs
index 79a9418..83bb125 100644
--- a/src/device/rdram.rs
+++ b/src/device/rdram.rs
@@ -57,10 +57,11 @@ pub fn write_mem(device: &mut device::Device, address: u64, value: u32, mask: u3
 
 pub fn read_regs(
     _device: &mut device::Device,
-    _address: u64,
+    address: u64,
     _access_size: device::memory::AccessSize,
 ) -> u32 {
-    panic!("rdram read reg");
+    println!("Warning: read from RDRAM reg {:#x}", address);
+    0
 }
 
 pub fn write_regs(_device: &mut device::Device, _address: u64, _value: u32, _mask: u32) {