Chapter 2 - Hardware Design; Overview - EPOX P55-BT User Manual

2-1 Overview

The P55-BT
is designed with Intel 82430TX PCIset chipset which is developed by
INTEL Corporation to fully support Pentium Processor PCI/ISA system. The Intel
82430TX PCIset chipset can increase integration and improve performance designs.
The chipset provides an integrated IDE controller with two high performance IDE
interfaces for up to four IDE devices (hard devices, CD-ROM device, etc). The PnP
Super I/O controller provides the standard PC I/O functions: a floppy interface, two
16 Byte FIFO serial ports and an EPP/ECP capable parallel port. The P55-BT layout is
shown in the previous page for user's reference. Care must be taken when inserting
memory modules, inserting CPU or even plugging PCI card into the associated slots
to avoid damaging any circuits or sockets on board. A cooling fan is strongly
recommended when installing P54C/P54CTB/P55C (MMX)/K5/K6/6x86 (6x86L)
processor due to possible overheat. The P55-BT supports CPU temperature monitor
and alarm to prevent CPU's cooling fan from malfunction or CPUoverheat. When CPU
overheats there is a heat sensor to monitor CPU temperature, than speaker will alarm
and CPU slow down to save you data and shutdown system.
The P55-BT
supports a minimum of 8MB of System Memory and a maximum of
256MB with 512KB synchronous SRAM Onboard to increase system performance.
The P55-BT
supports standard Fast Page, EDO (Extended Data Out or Hyper Page
Mode) or synchronous DRAM.
168-pin DIMM sites for memory expansion. Each socket supports 1M x 32(4MB), 2M
x 32(8MB), 4M x 32(16MB), and 8M x 32(32MB) single-sided or double-sided memory
modules. The memory timing requires 70 ns for Fast page devices or 60 ns for EDO
DRAM. This mainboard has two 168-pin DIMM sites to support 3.3V (power level)
Unbuffered Synchronous DRAMs(SDRAM) or 5.0V (power level) Fast Page, EDO
DRAM. Memory parity generation and checking are not supported. (DRAM Mod-
ules may be parity[x 36] or non-parity[x 32].
The P55-BT supports two Onboard PCI IDE connectors that can support PIO Mode/
Ultra DMA 33 device and detect IDE harddisk type by BIOS utility automatically.
Chapter 2
Hardware design
R
The P55-BT
provides two 72-pin SIMM and two
Hardware Design 2-1