diff -urN apm-sleep-0.6-1/apm-sleep.c apm-sleep-0.6.nocrash/apm-sleep.c
--- apm-sleep-0.6-1/apm-sleep.c	Sun Jul  1 16:50:38 2001
+++ apm-sleep-0.6.nocrash/apm-sleep.c	Sun Jul  1 17:43:29 2001
@@ -33,12 +33,23 @@
 #ifndef AGENDA_VR3
 #include <linux/apm_bios.h>
 #include <apm.h>
+#else
+#include <sys/stat.h>
+#include <fcntl.h>
 #endif /* AGENDA_VR3 */
 
 #define MAX_IRQS 255
 #define INTERRUPTS "/proc/interrupts"
 #define DEFAULT_SLEEP_TIME 10
 #define PID_FILE "/var/run/apm-sleep.pid"
+#ifdef AGENDA_VR3
+#define BATTERY "/dev/adif"
+#define APM_SLEEP_FILE "/proc/sys/pm/sleep"
+#define CRASH_VOLTAGE 660
+#define CRASH_DELTA 25
+#define CRASH_BLINK 3
+#define ALWAYS_LOG 0
+#endif /* AGENDA_VR3 */
 
 int irqs[MAX_IRQS]; /* irqs to examine have a value of 1 */
 int max_unused=120; /* in seconds - default 2 minutes */
@@ -46,7 +57,11 @@
 int ac_max_unused;
 
 #ifdef AGENDA_VR3
-char *sleep_command="echo 1 > /proc/sys/pm/sleep";
+const char *sleep_command_default="echo 1 > /proc/sys/pm/sleep";
+static char *sleep_command;
+static int crash_voltage=CRASH_VOLTAGE, crash_delta=CRASH_DELTA;
+static int crash_blink=CRASH_BLINK;
+static int always_log=ALWAYS_LOG;
 #else  /* AGENDA_VR3 */
 char *sleep_command="apm -s";
 #endif /* AGENDA_VR3 */
@@ -77,6 +92,28 @@
 	fprintf(stderr, "Usage: apm-sleep [-s command] [-u n] [-U n] [-i n [-i n ..]] [-a] [-n] [-d] [-c n]\n");
 }
 
+#ifdef AGENDA_VR3
+void write_to_file(char *file, char *line);
+
+void go_to_sleep () {
+	/* provide for -s option ... */
+	if (sleep_command != sleep_command_default) {
+		if (system(sleep_command) != 0) {
+			syslog(LOG_ERR, "%s failed", sleep_command);
+		};
+	} else {
+		write_to_file(APM_SLEEP_FILE,"1");
+	}
+}
+
+void write_to_file(char *file, char *line) {
+	int fd;
+	fd=open(file,O_WRONLY);
+	write(fd,line,strlen(line));
+	close(fd);
+}
+#endif
+
 void parse_command_line (int argc, char **argv) {
 	extern char *optarg;
 	struct option long_options[] = {
@@ -160,6 +197,9 @@
 	long v;
 	time_t nowtime, oldtime=0;
 	FILE *f;
+	int batteryfd;
+	unsigned short voltage,oldvoltage=0;
+	char vchar[8];
 	char line[64];
 #ifndef AGENDA_VR3
 	apm_info ai;
@@ -169,9 +209,48 @@
 		activity=0;
 		f=fopen(INTERRUPTS, "r");
 		if (! f) {
+			syslog(LOG_ERR, INTERRUPTS);
 			perror(INTERRUPTS);
 			exit(1);
 		}
+		if ((batteryfd=open(BATTERY,O_RDONLY))<0) {
+			syslog(LOG_ERR, BATTERY " open");
+			perror(BATTERY);
+			exit(2);
+		}
+		if (read(batteryfd, &vchar, 8) != 8) {
+			syslog(LOG_ERR, BATTERY " read" );
+			perror(BATTERY);
+			exit(2);
+		}
+		voltage = *(unsigned short *)vchar;
+		if (voltage - crash_voltage < (crash_blink*crash_delta)) {
+			sprintf(line,"\033[16;1]\033[17;5]\033[19;%i]\033[18;3]",crash_blink-((voltage - crash_voltage)/crash_delta));
+			write_to_file("/dev/console",line);
+		}
+		if (always_log && oldvoltage && voltage != oldvoltage)
+			syslog(LOG_NOTICE, "now: %i, delta: %i",voltage,voltage-oldvoltage);
+		while (voltage < crash_voltage || (voltage - oldvoltage) < -crash_delta ) {
+			go_to_sleep();
+			sleep(1);
+			syslog(LOG_NOTICE, "now: %i, delta: %i - going to sleep",voltage,voltage-oldvoltage);
+			close(batteryfd);
+			if ((batteryfd=open(BATTERY,O_RDONLY))<0) {
+				syslog(LOG_ERR, BATTERY " open");
+				perror(BATTERY);
+				exit(2);
+			}
+			if (read(batteryfd, &vchar, 8) != 8) {
+				syslog(LOG_ERR, BATTERY " read" );
+				perror(BATTERY);
+				exit(2);
+			}
+			oldvoltage=voltage;
+			voltage = *(unsigned short *)vchar;
+		}
+		oldvoltage=voltage;
+		close(batteryfd);
+		
 		while(fgets(line,sizeof(line),f)) {
 			if (sscanf(line,"%d: %ld", &i, &v) == 2) {
 				if (autoprobe) {
@@ -217,10 +296,14 @@
 				printf("Total unused = %d\n", total_unused);
 					
 			if (sleep_now) {
-				if(debug) printf("Going to bad\n");
+				if(debug) printf("Going to bed\n");
 				syslog(LOG_NOTICE, "forcing sleep");
+#ifdef AGENDA_VR3
+				go_to_sleep();
+#else /* AGENDA_VR3 */
 				if (system(sleep_command) != 0)
 					syslog(LOG_ERR, "%s failed", sleep_command);
+#endif /* AGENDA_VR3 */ 
 				total_unused=0;
 				oldtime=0;
 				sleep_now=0;
@@ -249,14 +332,27 @@
 
 int get_sleeptime() {
 	char label[15];
-	char time[3];
+	char value[5];
+	int sleeptime;
+	
 	FILE* fp = fopen("/etc/apm-sleep.conf", "r");
 	if(fp == 0)
 		return -1; /* unable to open file */
-	fscanf(fp, "%s %s", label, time);
+	while (fscanf(fp, "%s %s", label, value) != EOF) {
+		if(strcmp(label, "sleeptime") == 0)
+			sleeptime=atoi(value);
+		else if(strcmp(label, "crash_voltage") == 0)
+			crash_voltage=atoi(value);
+		else if(strcmp(label, "crash_delta") == 0)
+			crash_delta=atoi(value);
+		else if(strcmp(label, "crash_blink") == 0)
+			crash_blink=atoi(value);
+		else if(strcmp(label, "always_log") == 0)
+			always_log=atoi(value);
+	}
 	fclose(fp);
-	if(strcmp(label, "sleeptime") == 0)
-		return atoi(time);
+	if (sleeptime)
+		return (sleeptime);
 	return -1; /* line doesn't exist */
 
 }
@@ -269,6 +365,7 @@
 	FILE *f;
 	int unused_time;
 
+	sleep_command=(char *)sleep_command_default;
 	signal(SIGHUP, sighup_handler);
 
 	parse_command_line(argc, argv);