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EPSON
EPSON AMERICA INC.
SERVICE DEPARTMENT
PRODUCT SUPPORT BULLETIN
DATE:
3/2/88
SUBJECT:
LEAP YEAR / MS-DOS 3.1 DATE CHANGE
This
bulletin
version
3.1
III
personal
On
March
1,
change
correctly
may have
guessed, MS-DOS 3.1 did not handle the February 29th
"leap day" change
Both
the
Clock/Calendar with CMOS RAM to retain the date and time after
it is set with the SETUP utility program. Even though
has the correct date
(03-Ol-1988),
The
easiest
date in the RTC's CMOS RAM one day ahead as follows:
1. Run the "SETUP"
2.
Select
3. Set the DATE to the current date + one.
4. EXIT to save the new date.
5. Re-boot the system!
When MS-DOS 3.1 retrieves the date
the
extra
day
operation.
This problem does not exist with MS-DOS version 3.2 should the
customer
decide
describes
a
which
was
supplied
computers.
1988
we
discovered
to
3-1-1988,
correctly.
Equity
II
and
DOS
interprets
method
of
correcting
utility
REAL-TIME
and
will
to
upgrade.
problem
identified
with
the
that the system date did not
but
indicated
Equity
III
it
as
02-29-1988.
this
program.
CLOCK.
from the
display
the
correct
Page 1 of 1
NUMBER:
in
Epson's
Equity
II and Equity
2-29-1988.
use
a
Real
the RTC
anomaly is to set the
RTC
it
subtracts
date
for
S-0037
MS-DOS
As
you
Time
system