AOpen P5TC-OV User Manual

Chapter 1

Overview

The AP5TC is a high-performance Pentium-based system board that utilizes
the PCI/ISA architecture and Baby AT form factor. It integrates the Intel
82430TX PCIset, a Super I/O controller, and a PCI mode 4 enhanced IDE
controller with bus master and Ultra DMA/33 to enhance system performance.
It has 512KB pipelined-burst second-level cache onboard and support four
single in-line memory module (SIMM) plus two Dual in-line memory module
(DIMM) that allow to mix EDO and SDRAM memory and expansion up to a
maximum of 256MB. For the memory and IDE performance, the Intel 430TX
chipset is currently the fastest Pentium chipset in the market.

In addition, AP5TC also implements many special features as following.
Switching Power Regulator Although Linear Regulator is good enough for

AMD K6, AP5TC uses switching requlator to reserve the upgrade capability for
new generation CPU.

Over-current Protection AP5TC implements CPU core voltage 15A over­current protection to prevent any accident short circuit and prevent system
damage.

CPU Thermal Protection When CPU temperature is higher than a predefined
value, the CPU speed will automatically slow down and there will be warning
from BIOS and also ADM (AOpen Desktop Manager, similar as Intel LDCM), if
ADM is installed.

Full-range CPU core voltage This motherboard supports the CPU core
voltage from 1.3V to 3.5V, that can be applied to various CPU type in future.

Resetable Fuse AP5TC implements resetable fuses to prevent any accidental
short circuit caused by keyboard or USB devices hot plug.

PCI Sound Card connector The SB-LINK connector can be used to link
Creative-compatible PCI sound card. If you have a Creative PCI sound card
installed, it is necessary to link the card to this connector for compatibility issue
under DOS environment.

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Overview

FCC DoC certificate The AP5TC has also passed FCC DoC test, this means
you can use any kind of housing with very low EMI radiation.

Powerful utility softwares supported AOpen Bonus Pack bundled CD
contains many useful utilities, such as ADM (Advanced Desktop Manager),
AOchip, Hardware Monitor utility, AcePhone, EasyAxess, Suspend to Hard
Drive utility, and BIOS flash utility.

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1.1 Specifications

Overview

Form Factor
Board Size
CPU

System Memory

Second-level Cache
Chipset
Expansion Slots
Serial Port

Parallel Port

Floppy Interface

IDE Interface

USB Interface

PS/2 Mouse
Keyboard

RTC and Battery
BIOS

Baby AT
220 mm x 250 mm
Intel Pentium Processor P54C, PP/MT (P55C), AMD K5/K6,

Cyrix 6x86 and IDT C6.
FPM (Fast Page Mode) or EDO (Extended Data Output) 72-pin

SIMM x4, and SDRAM 168-pin x2 maximum 256MB.
256KB or 512KB pipelined-burst cache onboard.
Intel 82430TX PCIset
ISA x3 and PCI x4
Two serial ports UART 16C550 compatible, and the 3rd

UART for IR function.
One parallel port supports standard parallel port (SPP),

enhanced parallel port (EPP) or extended capabilities port
(ECP).

Floppy interface supports 3.5 inches drives with 720KB,

1.44MB or 2.88MB format or 5.25 inches drives with 360KB,

1.2MB format.
Dual-channel IDE interface support maximum 4 IDE hard

disks or CDROM, mode 4 , bus master hard disk drives and
Ultra DMA/33 mode hard drives are also supported.

Two USB ports supported by USB bracket, the BIOS also
supports USB driver to simulate legacy keyboard.

PS/2 mouse supported by PS/2 mouse bracket.
Default AT compatible keyboard, mini-DIN PS/2 keyboard

connector is optional.
RTC build in Intel PIIX4 chipset, Lithium (CR-2032) battery.
AWARD Plug-and-Play Flash ROM BIOS

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