diff --git a/sys/arch/vax/vax/ka46.c b/sys/arch/vax/vax/ka46.c
index 1aff071547bd..bee4c719dd2a 100644
--- a/sys/arch/vax/vax/ka46.c
+++ b/sys/arch/vax/vax/ka46.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ka46.c,v 1.15 2000/06/29 07:14:26 mrg Exp $ */
+/*	$NetBSD: ka46.c,v 1.16 2001/02/18 16:56:22 ragge Exp $ */
 /*
  * Copyright (c) 1998 Ludd, University of Lule}, Sweden.
  * All rights reserved.
@@ -53,13 +53,13 @@
 #include <machine/clock.h>
 #include <machine/vsbus.h>
 
-static	void	ka46_conf __P((void));
-static	void	ka46_steal_pages __P((void));
-static	void	ka46_memerr __P((void));
-static	int	ka46_mchk __P((caddr_t));
-static	void	ka46_halt __P((void));
-static	void	ka46_reboot __P((int));
-static	void	ka46_cache_enable __P((void));
+static	void	ka46_conf(void);
+static	void	ka46_steal_pages(void);
+static	void	ka46_memerr(void);
+static	int	ka46_mchk(caddr_t);
+static	void	ka46_halt(void);
+static	void	ka46_reboot(int);
+static	void	ka46_cache_enable(void);
 
 struct	vs_cpu *ka46_cpu;
 
@@ -137,8 +137,7 @@ ka46_memerr()
 }
 
 int
-ka46_mchk(addr)
-	caddr_t addr;
+ka46_mchk(caddr_t addr)
 {
 	panic("Machine check");
 	return 0;
@@ -152,15 +151,20 @@ ka46_steal_pages()
 	ka46_cache_enable();
 }
 
+#define	KA46_CPMBX	0x38
+#define KA46_HLT_HALT	0xcf
+#define KA46_HLT_BOOT	0x8b
+
 static void
 ka46_halt()
 {
+	((u_int8_t *) clk_page)[KA46_CPMBX] = KA46_HLT_HALT;
 	asm("halt");
 }
 
 static void
-ka46_reboot(arg)
-	int arg;
+ka46_reboot(int arg)
 {
+	((u_int8_t *) clk_page)[KA46_CPMBX] = KA46_HLT_BOOT;
 	asm("halt");
 }
diff --git a/sys/arch/vax/vax/ka49.c b/sys/arch/vax/vax/ka49.c
index 743e0865a26c..1707a6c2f029 100644
--- a/sys/arch/vax/vax/ka49.c
+++ b/sys/arch/vax/vax/ka49.c
@@ -39,19 +39,19 @@
 #include <machine/scb.h>
 
 #define	KA49_CPMBX	0x38
-#define	KA49_HLT_HALT	0x03
-#define	KA49_HLT_BOOT	0x02
+#define	KA49_HLT_HALT	0xcf
+#define	KA49_HLT_BOOT	0x8b
 
-static	void	ka49_conf __P((void));
-static	void	ka49_memerr __P((void));
-static	int	ka49_mchk __P((caddr_t));
-static	void	ka49_halt __P((void));
-static	void	ka49_reboot __P((int));
-static	void	ka49_softmem __P((void *));
-static	void	ka49_hardmem __P((void *));
-static	void	ka49_steal_pages __P((void));
-static	void	ka49_cache_enable __P((void));
-static	void	ka49_halt __P((void));
+static	void	ka49_conf(void);
+static	void	ka49_memerr(void);
+static	int	ka49_mchk(caddr_t);
+static	void	ka49_halt(void);
+static	void	ka49_reboot(int);
+static	void	ka49_softmem(void *);
+static	void	ka49_hardmem(void *);
+static	void	ka49_steal_pages(void);
+static	void	ka49_cache_enable(void);
+static	void	ka49_halt(void);
 
 /* 
  * Declaration of 49-specific calls.
@@ -93,8 +93,7 @@ ka49_conf()
  * Why may we get memory errors during startup???
  */
 void
-ka49_hardmem(arg)
-	void *arg;
+ka49_hardmem(void *arg)
 {
 	if (cold == 0)
 		printf("Hard memory error\n");
@@ -102,8 +101,7 @@ ka49_hardmem(arg)
 }
 
 void
-ka49_softmem(arg)
-	void *arg;
+ka49_softmem(void *arg)
 {
 	if (cold == 0)
 		printf("Soft memory error\n");
@@ -205,8 +203,7 @@ ka49_memerr()
 }
 
 int
-ka49_mchk(addr)
-	caddr_t addr;
+ka49_mchk(caddr_t addr)
 {
 	panic("Machine check");
 	return 0;
@@ -234,8 +231,7 @@ ka49_halt()
 }
 
 static void
-ka49_reboot(arg)
-	int arg;
+ka49_reboot(int arg)
 {
 	((u_int8_t *) clk_page)[KA49_CPMBX] = KA49_HLT_BOOT;
 	asm("halt");