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-rw-r--r--src/pc80/mc146818rtc.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/pc80/mc146818rtc.c b/src/pc80/mc146818rtc.c
index f3bee9bdce..034957acf5 100644
--- a/src/pc80/mc146818rtc.c
+++ b/src/pc80/mc146818rtc.c
@@ -98,7 +98,6 @@ static void rtc_set_checksum(int range_start, int range_end, int cks_loc)
for(i = range_start; i <= range_end; i++) {
sum += cmos_read(i);
}
- sum = ~(sum & 0x0ffff);
cmos_write(((sum >> 8) & 0x0ff), cks_loc);
cmos_write(((sum >> 0) & 0x0ff), cks_loc+1);
}