Aopen ax5taq User Manual
Frequently Asked Questions
B-3
Q: What is MMX?
A: MMX is the new single-line multiple-instruction technology of the new Intel
Pentium PP/MT (P55C) CPU. A new Pentium Pro CPU (Klamath) with MMX
technology is also expected to be released soon. The MMX instructions are
specifically useful for multimedia applications (such as 3D video, 3D sound,
video conference). The performance can be improved if applications use these
instructions. All AOpen MBs have at least dual power onboard to support
PP/MT, it is not necessary to have special chipset for MMX CPU.
technology is also expected to be released soon. The MMX instructions are
specifically useful for multimedia applications (such as 3D video, 3D sound,
video conference). The performance can be improved if applications use these
instructions. All AOpen MBs have at least dual power onboard to support
PP/MT, it is not necessary to have special chipset for MMX CPU.
Q: What is USB (Universal Serial Bus)?
A: USB is a new 4-pin serial peripheral bus that is capable of cascading
low/medium speed peripherals (less than 10Mbit/s) such as keyboard, mouse,
joystick, scanner, printer and modem/ISDN. With USB, the traditional complex
cables from back panel of your PC can be eliminated.
joystick, scanner, printer and modem/ISDN. With USB, the traditional complex
cables from back panel of your PC can be eliminated.
You need the USB driver to support USB device(s). AOpen MBs are all USB
ready,
ready,
you
may
get
latest
BIOS
from
AOpen
web
site
(http://www.aopen.com.tw).
Our latest BIOS includes the keyboard driver
(called Legacy mode), that simulates USB keyboard to act as AT or PS/2
keyboard and makes it possible to use USB keyboard if you don't have driver in
your OS. For other USB devices, you may get the drivers from your device
vendor or from OS (such as Win95). Be sure to turn off "USB Legacy Support"
in BIOS "Chipset Setup" if you have another driver in your OS.
keyboard and makes it possible to use USB keyboard if you don't have driver in
your OS. For other USB devices, you may get the drivers from your device
vendor or from OS (such as Win95). Be sure to turn off "USB Legacy Support"
in BIOS "Chipset Setup" if you have another driver in your OS.
Q: What is P1394?
A: P1394 (IEEE 1394) is another standard of high-speed serial peripheral bus.
Unlike low or medium speed USB, P1394 supports 50 to 1000Mbit/s and can be
used for video camera, disk and LAN. Since P1394 is still under development, ,
there is no P1394 device currently available in the PC market. Also, there is no
chipset that can support P1394. Probably in the near future, a card will be
developed to support P1394 device.
used for video camera, disk and LAN. Since P1394 is still under development, ,
there is no P1394 device currently available in the PC market. Also, there is no
chipset that can support P1394. Probably in the near future, a card will be
developed to support P1394 device.
Q: What is SMBus (System Management Bus, also called I2C bus)?
A: SMBus is a two-wire bus developed for component communication (especially
for semiconductor IC). It is most useful for notebook to detect component
status and replace hardware configuration pin (pull-high or pull-low).
status and replace hardware configuration pin (pull-high or pull-low).
For
example, disabling clock of DIMM that does not exist, or detecting battery low
condition. The data transfer rate of SMBus is only 100Kbit/s, it allows one host
to communicate with CPU and many masters and slaves to send/receive
message. The SMBus may be used for jumpless mainboard, the components
which support SMbus are not ready yet, we will keep eyes on it.
condition. The data transfer rate of SMBus is only 100Kbit/s, it allows one host
to communicate with CPU and many masters and slaves to send/receive
message. The SMBus may be used for jumpless mainboard, the components
which support SMbus are not ready yet, we will keep eyes on it.
Q: What is FCC DoC (Declaration of Conformity)?