IWILL DS133R, Руководство пользователя, Страница: 21 / 80

Chapter 2 Overview
21
DS133R Series
YEAR 2000 issue
All motherboard currently shipped from IWILL contain BIOS capable of handling the year
2000 data correctly.
The IBM compatible PC utilizes a Motorola MC146818 compatible Real Time Clock (RTC) chip to
maintain the date and time. Unfortunately, the “century” is not manipulated by the RTC. It uses 8-
bits of information to report the year, and can only hold the last two digits of a year in packed BCD
format. For example, 1997 is reported solely as 97. Since the RTC also contains non-volatile memory,
IBM has specified a location in the memory to hold “century” information. By combining the cen-
tury data with the year data, software can obtain a full 4-digit year. When the Year 2000 arrives, the
RTC reports the year as ‘00’ and the “century” in RTC memory will contain ’19.’ Combining the full
4-digit year yields 1900, not 2000. Any application which compare dates, or uses relative dates to
perform functions will see incorrect dates.
All motherboards contain BIOS, which is one of the key ingredients to check for systems designed to
handle the year 2000. All motherboards currently shipped from IWILL contain BIOS capable
of handling the year 2000 date correctly.
Be aware that the BIOS capability alone does not ensure that the system will handle the transition
correctly. Other system components such as the operating system and application software also need
to be able to handle the year 2000 date, and recognize the date format from other sources.
EC Declaration of Conformity
We
IWILL Corporation
No. 10, Wu Chuan 3rd Rd.,
Hsin Chuang City, Taipei,
Taiwan, R.O.C.
Declare under sole responsibility that the
DS133R motherboard
Meets the intent of Directive 89/336/ECC for Electromagnetic Compatibility. Compliance was dem-
onstrated to the following specifications as listed in the official Journal of the European Communities:
EN 50081-1 Emissions:
EN 55022 Radiated, Class B
EN 55022 Conducted, Class B
EN 60555-2 Power Harmonics
EN 50082-1 Immunity:
IEC 801-2 Electrostatic Discharge
IEC 801-3 RF Radiate
IEC 801-4 Fast Transient