HelenOS sources

DP_MAR5           327 uspace/drv/nic/ne2k/dp8390.c 	pio_write_8(ne2k->port + DP_MAR5, 0);
DP_MAR5           665 uspace/drv/nic/ne2k/dp8390.c 	pio_write_8(ne2k->port + DP_MAR5, (uint8_t) (hash >> 40));