HelenOS sources

CTRL_ASDE         413 uspace/drv/nic/e1k/e1k.c 	ctrl &= ~(CTRL_ASDE);
CTRL_ASDE         455 uspace/drv/nic/e1k/e1k.c 	ctrl |= CTRL_ASDE;
CTRL_ASDE         483 uspace/drv/nic/e1k/e1k.c 	ctrl &= ~(CTRL_ASDE);
CTRL_ASDE        1548 uspace/drv/nic/e1k/e1k.c 	E1000_REG_WRITE(e1000, E1000_CTRL, CTRL_ASDE);
HelenOS homepage, sources at GitHub