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1.1
Overview
·
PT-431A offers a 32-bit programming architecture compatible with the software base of the 486 microprocessor. It
is a reliable motherboard using a UMC chipset and a multi-layer printed circuit board. The chipset consists of
UM8881F and UM8886AF which provides the most cost effective and high performance solution for a 486
computer system.
·
The UM8881F is a Host Bridge compliant to PCI spec. 2.0 for 486 mother board which contains a sophisticated
direct-mapped cache controller with write-back or write through operation, fast page mode DRAM Controller, and
support system managment mode operation. The UM8886AF provides the bridge between the PCI bus and ISA
bus , Enhanced DMA function, incorporates two 82C59 interupt controllers, one 82c54 16-bit counter/timers, NMI
control logic, built-in hardware keyboard controller, RTC and NVM direct interface, primary and secondary PCI
IDE controller interface.
·
PT-431A is a PCI Local Bus motherboard. The four PCI Bus slots fully comply with the PCI spec. v2.0. The speed
of I/O peripherals can be dramatically increased by connecting PCI compatible controller cards to the PCI Bus slots
on the PT-431A.
·
PT-431A offers you the option for an excellent CPU upgrade path.
CPUs such as 486SX/DX and DX2, this motherboard has been equipped with an option for lowering the voltage of
the CPU down to 3.3V in order to enable use with Intel & AMD DX4 CPUs (and other 3.3Volt CPUs), offering up
to 100MHz speeds. This option is in the form of a DX4 converter/daughter board is fully described in Section 2.3
of this manual.
·
PT-431A is a green design mother-board which means when there is no system activity for a specific period of time
(this period is software programmable), the PT-431A will slow down its original working frequency to 8 Mhz speed
when used with standard CPUs. If an 'SMM' (System Management Mode) CPU is used, the green feature of PT-
431A slows down the CPU clock to zero.
pollution and protecting our environment.
can be connected up to an external product, called an 'ECO-PAD' which can control the on/off switching of
external power devices such as printers, monitors and scanners, through the motherboard BIOS. If you do not use
an ECO-PAD then you can use the VGA Green connector in PT-431A connected to a range of "PT-xxxx" VGA
cards or APT2000/APT2000A controller cards to perform VGA Green or power down I/O chip function. For further
information on the ECO-PAD or other "PT" products please contact your dealer or sales representative.
ENERGY STAR
"This is an
The Environmental Protection Agency
specified manufacturer must produce systems, or system components which enable a computer system to operate and
draw 30 watts or less of power in idle mode. Although the EPA do not endorse any particular product or service, the
program is designed to offer a cooperative effort between the EPA and the component manufacturer (Ally) to provide
energy saving products and education to customers."
"It runs with Netware"
The PT-431A was authorized by Novell to use the Novell Yes, It runs with Netware certification mark.
"FCC Approval"
The PT-431A motherboard has been approved for FCC Class B when properly installed in a barebone configuration
using the following case/power supply:
Brand
Procase
Procase
TM
compliant product."
ENERGY STAR
Model
PC-109 SM
JPJPINE429G109
PC-609 T/M
JPJPINE429G609
This will help save the power consumption, reducing energy related
PT-431A is also equipped with a unique AUX Green connector which
TM
program defines that as an Ally of this program the
FCC ID
4
Designed to work with most brands of 486
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