diff --git a/devices/ioctrl/heathrow.cpp b/devices/ioctrl/heathrow.cpp
index c77a1f9..9eb9439 100644
--- a/devices/ioctrl/heathrow.cpp
+++ b/devices/ioctrl/heathrow.cpp
@@ -96,6 +96,8 @@ HeathrowIC::HeathrowIC() : PCIDevice("mac-io/heathrow"), InterruptCtrl()
 
     // connect Ethernet HW
     this->bmac = dynamic_cast<BigMac*>(gMachineObj->get_comp_by_type(HWCompType::ETHER_MAC));
+    this->enet_xmit_dma = std::unique_ptr<DMAChannel> (new DMAChannel());
+    this->enet_rcv_dma  = std::unique_ptr<DMAChannel> (new DMAChannel());
 
     // set EMMO pin status (active low)
     this->emmo_pin = GET_BIN_PROP("emmo") ^ 1;
@@ -122,6 +124,10 @@ uint32_t HeathrowIC::dma_read(uint32_t offset, int size) {
         return this->scsi_dma->reg_read(offset & 0xFF, size);
     case MIO_OHARE_DMA_FLOPPY:
         return this->floppy_dma->reg_read(offset & 0xFF, size);
+    case MIO_OHARE_DMA_ETH_XMIT:
+        return this->enet_xmit_dma->reg_read(offset & 0xFF, size);
+    case MIO_OHARE_DMA_ETH_RCV:
+        return this->enet_rcv_dma->reg_read(offset & 0xFF, size);
     case MIO_OHARE_DMA_AUDIO_OUT:
         return this->snd_out_dma->reg_read(offset & 0xFF, size);
     default:
@@ -139,6 +145,12 @@ void HeathrowIC::dma_write(uint32_t offset, uint32_t value, int size) {
     case MIO_OHARE_DMA_FLOPPY:
         this->floppy_dma->reg_write(offset & 0xFF, value, size);
         break;
+    case MIO_OHARE_DMA_ETH_XMIT:
+        this->enet_xmit_dma->reg_write(offset & 0xFF, value, size);
+        break;
+    case MIO_OHARE_DMA_ETH_RCV:
+        this->enet_rcv_dma->reg_write(offset & 0xFF, value, size);
+        break;
     case MIO_OHARE_DMA_AUDIO_OUT:
         this->snd_out_dma->reg_write(offset & 0xFF, value, size);
         break;
diff --git a/devices/ioctrl/macio.h b/devices/ioctrl/macio.h
index cd70f69..2b63ef9 100644
--- a/devices/ioctrl/macio.h
+++ b/devices/ioctrl/macio.h
@@ -299,8 +299,10 @@ private:
 
     // DMA channels
     std::unique_ptr<DMAChannel>     scsi_dma;
-    std::unique_ptr<DMAChannel>     snd_out_dma;
     std::unique_ptr<DMAChannel>     floppy_dma;
+    std::unique_ptr<DMAChannel>     enet_xmit_dma;
+    std::unique_ptr<DMAChannel>     enet_rcv_dma;
+    std::unique_ptr<DMAChannel>     snd_out_dma;
 };
 
 #endif /* MACIO_H */