HelenOS sources

DP_RCR            218 uspace/drv/nic/ne2k/dp8390.c 	pio_write_8(ne2k->port + DP_RCR, RCR_MON);
DP_RCR            305 uspace/drv/nic/ne2k/dp8390.c 	pio_write_8(ne2k->port + DP_RCR, ne2k->receive_configuration);
DP_RCR            642 uspace/drv/nic/ne2k/dp8390.c 	pio_write_8(ne2k->port + DP_RCR, ne2k->receive_configuration);
DP_RCR            652 uspace/drv/nic/ne2k/dp8390.c 	pio_write_8(ne2k->port + DP_RCR, ne2k->receive_configuration);
DP_RCR            662 uspace/drv/nic/ne2k/dp8390.c 	pio_write_8(ne2k->port + DP_RCR, ne2k->receive_configuration);
HelenOS homepage, sources at GitHub