--- kernel/sys.c.org	Fri May  7 18:12:43 1999
+++ kernel/sys.c	Fri May  7 18:16:10 1999
@@ -193,6 +193,7 @@
 	case LINUX_REBOOT_CMD_POWER_OFF:
 		notifier_call_chain(&reboot_notifier_list, SYS_POWER_OFF, NULL);
 		printk(KERN_EMERG "Power down.\n");
+		outl(0x9a5a,0xe8);
 		machine_power_off();
 		do_exit(0);
 		break;