+#define ISR0_PRX (1 << 0) // Packet recieved
+#define ISR0_PTX (1 << 1) // Packet transmitted successfully
+#define ISR0_RXE (1 << 2) // RX Error
+#define ISR0_TXE (1 << 3) // TX Error
+#define ISR0_TU (1 << 4) // Transmit buffer underflow
+#define ISR0_RU (1 << 5) // Recieve buffer link error
+#define ISR0_BE (1 << 6) // PCI Bus error
+#define ISR0_CNT (1 << 7) // CRC error / missed packet counter overflow
+
+#define ISR1_ERI (1 << 0) // Early recieve interrupt
+#define ISR1_UDFI (1 << 1) // TX FIFO underflow event
+#define ISR1_OVFI (1 << 2) // Recieve overflow
+#define ISR1_PKTR (1 << 3) // FIFO overflow (?"next packet race with current packet")
+#define ISR1_NORBF (1 << 4) // No more recieve buffers avaiable (overflow essentialy)
+#define ISR1_ABTI (1 << 5) // Transmission abort due to excessive collisions
+#define ISR1_SRCI (1 << 6) // Port state change
+#define ISR1_GENI (1 << 7) // General purpose interrupt
+