--- a/.hgignore	Wed Nov 22 19:15:29 2017 +0000
+++ b/.hgignore	Sun Dec 17 00:57:42 2017 +0000
@@ -8,6 +8,7 @@
 ^ffstools/cal2text/fc-cal2text$
 ^ffstools/caltools/c1xx-calextr$
 ^ffstools/caltools/fc-cal2bin$
+^ffstools/newcomp/compile-fc-batt$
 ^ffstools/tiaud/compile$
 ^ffstools/tiaud/decomp$
 ^ffstools/tiaud/mkvol$

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ffstools/newcomp/Makefile	Sun Dec 17 00:57:42 2017 +0000
@@ -0,0 +1,16 @@
+CC=	gcc
+CFLAGS=	-O2
+PROGS=	compile-fc-batt
+INSTBIN=/opt/freecalypso/bin
+
+all:	${PROGS}
+
+compile-fc-batt:	compile-fc-batt.c
+	${CC} ${CFLAGS} -o $@ $@.c
+
+install:	${PROGS}
+	mkdir -p ${INSTBIN}
+	install -c ${PROGS} ${INSTBIN}
+
+clean:
+	rm -f ${PROGS}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ffstools/newcomp/compile-fc-batt.c	Sun Dec 17 00:57:42 2017 +0000
@@ -0,0 +1,110 @@
+/*
+ * This utility compiles a table of battery thresholds for the new FreeCalypso
+ * battery management code from ASCII source into the binary form suitable
+ * for uploading into /etc/batterytab on a FreeCalypso device.
+ */
+
+#include <ctype.h>
+#include <string.h>
+#include <strings.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "../../rvinterf/include/exitcodes.h"
+
+char *infname;
+FILE *inf, *outf;
+char linebuf[256];
+int lineno, record_count;
+unsigned last_mv, last_percent;
+
+process_line()
+{
+	char *cp;
+	unsigned mv, percent;
+
+	for (cp = linebuf; isspace(*cp); cp++)
+		;
+	if (*cp == '\0' || *cp == '#')
+		return(0);
+	if (!isdigit(*cp)) {
+inv:		fprintf(stderr, "%s line %d: invalid syntax\n", infname,
+			lineno);
+		exit(ERROR_USAGE);
+	}
+	mv = strtoul(cp, 0, 10);
+	while (isdigit(*cp))
+		cp++;
+	if (!isspace(*cp))
+		goto inv;
+	while (isspace(*cp))
+		cp++;
+	if (!isdigit(*cp))
+		goto inv;
+	percent = strtoul(cp, 0, 10);
+	while (isdigit(*cp))
+		cp++;
+	while (isspace(*cp))
+		cp++;
+	if (*cp != '\0' && *cp != '#')
+		goto inv;
+	if (mv > 0xFFFF) {
+		fprintf(stderr, "%s line %d: the millivolt value is invalid\n",
+			infname, lineno);
+		exit(ERROR_USAGE);
+	}
+	if (percent > 100) {
+		fprintf(stderr, "%s line %d: the percent value is invalid\n",
+			infname, lineno);
+		exit(ERROR_USAGE);
+	}
+	if (record_count) {
+		if (mv >= last_mv) {
+			fprintf(stderr,
+			"%s line %d: millivolt numbers must be decreasing\n",
+				infname, lineno);
+			exit(ERROR_USAGE);
+		}
+		if (percent >= last_percent) {
+			fprintf(stderr,
+			"%s line %d: percent numbers must be decreasing\n",
+				infname, lineno);
+			exit(ERROR_USAGE);
+		}
+	}
+	putc(mv, outf);
+	putc(mv >> 8, outf);
+	putc(percent, outf);
+	putc(0, outf);
+	last_mv = mv;
+	last_percent = percent;
+	record_count++;
+	return(1);
+}
+
+main(argc, argv)
+	char **argv;
+{
+	if (argc != 3) {
+		fprintf(stderr, "usage: %s srcfile output-binfile\n", argv[0]);
+		exit(ERROR_USAGE);
+	}
+	infname = argv[1];
+	inf = fopen(infname, "r");
+	if (!inf) {
+		perror(infname);
+		exit(ERROR_UNIX);
+	}
+	outf = fopen(argv[2], "w");
+	if (!outf) {
+		perror(argv[2]);
+		exit(ERROR_UNIX);
+	}
+	for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++)
+		process_line();
+	fclose(inf);
+	fclose(outf);
+	if (record_count)
+		exit(0);
+	fprintf(stderr, "error: %s is empty\n", infname);
+	exit(ERROR_USAGE);
+}