HelenOS sources
DP_RSAR1 124 uspace/drv/nic/ne2k/dp8390.c pio_write_8(ne2k->port + DP_RSAR1, (addr >> 8) & 0xff);
DP_RSAR1 149 uspace/drv/nic/ne2k/dp8390.c pio_write_8(ne2k->port + DP_RSAR1, (addr >> 8) & 0xff);
DP_RSAR1 216 uspace/drv/nic/ne2k/dp8390.c pio_write_8(ne2k->port + DP_RSAR1, 0);
DP_RSAR1 234 uspace/drv/nic/ne2k/dp8390.c pio_write_8(ne2k->port + DP_RSAR1, 0);
DP_RSAR1 504 uspace/drv/nic/ne2k/dp8390.c pio_write_8(ne2k->port + DP_RSAR1, (offset >> 8) & 0xff);
HelenOS homepage, sources at GitHub