HelenOS sources

KC_N8             134 uspace/drv/hid/adb-kbd/ctl.c 	[0x5b] = KC_N8,
KC_N8             151 uspace/drv/hid/atkbd/atkbd.c 	[0x75] = KC_N8,
KC_N8             146 uspace/drv/hid/usbhid/kbd/conv.c 	[0x60] = KC_N8,
KC_N8             144 uspace/drv/hid/xtkbd/xtkbd.c 	[0x48] = KC_N8,
KC_N8             167 uspace/srv/hid/input/ctl/sun.c 	[0x45] = KC_N8,
KC_N8             185 uspace/srv/hid/input/layout/ar.c 	[KC_N8] = '8',
KC_N8             214 uspace/srv/hid/input/layout/cz.c 	[KC_N8] = '8',
KC_N8             193 uspace/srv/hid/input/layout/fr_azerty.c 	[KC_N8] = '8',
KC_N8             194 uspace/srv/hid/input/layout/us_dvorak.c 	[KC_N8] = '8',
KC_N8             188 uspace/srv/hid/input/layout/us_qwerty.c 	[KC_N8] = '8',
HelenOS homepage, sources at GitHub