2.11BSD/sys/GENERIC/boot.s

/*
 *	SCCS id	@(#)NONEboot.s	1.2 (Berkeley)	2/19/87
 */
/ The intention is for this file to be used if a boot program isn't
/ available for a particulare drive/controller, or the autoboot
/ feature isn't desired.

halt = 0

.globl _doboot, hardboot
_doboot:
hardboot:
	halt			/ die ...