ECS P5GX-M User Manual
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ECS P5GX-M User Manual

ECS P5GX-M User Manual

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Overview
The P5GX-M mainboard complies with the specifications for a microATX
motherboard. MicroATX boards are no larger than 9.6" x 9.6" (244mm x 244mm).
This mainboard measures 9.6" x 7.75" (244mm x 197mm).The MicroATX
specification reduces system cost by utilizing a reduced chassis with a smaller power
supply. Increased motherboard integration reduces the demand for expansion slots.
The microATX form factor permits reduced case sizes and smaller power supply units.
However, the board can also be used in standard ATX cases if required.
The P5GX-M mainboard is designed around the Cyrix GXm processor. The Cyrix
GXm CPU is an Pentium-MMX compatible processor which reduces system cost by
integrating audio and video functions into the CPU and chipset. The system also
supports a PCI IDE interface, up to 256 MB of SDRAM, and a full set of I/O ports.
The P5GX-M is an excellent low-cost platform for inexpensive multimedia
workstations or an entry-level stand-alone computer. It requires just a processor and
memory module to be fully functional.
Features
Pentium-MMX Performance
The key feature of the P5GX-M mainboard is the support for the Cyrix GXm
processor. This board can run Cyrix GXm CPUs with clock speeds of 200, 233, and
266 MHz. The processor includes a 16K block of level-1 cache memory for enhanced
performance.
Highly Integrated Support Chipset
The Cyrix GXm processor is supported by the CX5530 companion chip. This chip
provides the system logic for a Pentium MMX-compatible mainboard. It supports PCI
IDE channels with bus mastering, power management, PCI to ISA bridge, and USB
ports. In addition, the CX5530 includes an integrated graphics sub-system with MPEG
acceleration, and an integrated 16-bit audio sub-system compatible with the Sound
Blaster standard.
SDRAM Memory Support
The mainboard includes two sockets for the installation of 168-pin, 3.3V SDRAM
memory modules. Each socket can be installed with a memory module with a
maximum capacity of 128 MB, so the maximum memory of the mainboard is 256 MB.
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Summary of Contents for ECS P5GX-M

  • Page 1 Features Pentium-MMX Performance The key feature of the P5GX-M mainboard is the support for the Cyrix GXm processor. This board can run Cyrix GXm CPUs with clock speeds of 200, 233, and 266 MHz. The processor includes a 16K block of level-1 cache memory for enhanced performance.
  • Page 2 Four Usable Expansion Slots The P5GX-M mainboard has four expansion slots. Two slots are 8/16-bit ISA slots and two slots are 32-bit PCI slots. Since the mainboard has integrated video and audio sub-systems, four expansion slots are adequate for most environments.

  • Page 3: Mainboard Illustration

    Mainboard Illustration DIMM1 DIMM2 CON1 COM2 CON2 SOCKET7 FLOPPY PCI1 PCI2 ISA1 ISA2 Key to Mainboard Components Component Description Component Description SOCKET7 CPU Socket Cooling fan power 2 (Cyrix GXm CPU only) DIMM1,2 Memory module sockets CPU voltage selector ISA1,2 8/16-bit ISA expansion slots PCI Bus speed selector PCI1,2...
  • Page 4 I/O Port Array Illustration USB1 JCOM1 Key to I/O Port Components Component Description J3 (Upper) PS/2 port for PS/2 mouse or pointing device J3 (Lower) PS/2 port for PS/2 keyboard Parallel Port (Bi-directional, EPP, ECP) J12 (Upper) Game/MIDI port for joystick or MIDI device J12 (Lower) Audio Jacks for Stereo Out, Stereo In, Microphone Port for display monitor...

  • Page 5: Installation Procedure

    Installation Procedure Prepare the Mainboard Prepare the main board by installing the Cyrix GXm processor and then installing either one or two memory modules. This board supports the 200, 233, or 266 MHz version of the Cyrix GXm processor. Finally, use the selection jumpers to configure the board for the correct bus and clock speeds.

  • Page 6: Check The Jumper Settings

    be levered upwards and latch on the edges of the DIMM when it is installed correctly. Check the Jumper Settings Use the mainboard selection jumpers to configure your board for the correct clock speed, voltage, and bus timing according to the CPU that you have installed. Set other selection jumpers to the correct settings.
  • Page 7 JP1: Set CPU Voltage Jumper JP1 consists of four 2-pin jumpers. Use the jumpers to set the core voltage for the processor. See the processor documentation for information on which voltage your processor requires. Processor Jumper Settings Core Voltage Pins 1-2 Pins 3-4 Pins 5-6 Pins 7-8...
  • Page 8 J18: Clear CMOS Memory Jumper If you ever need to clear the system CMOS memory, you can do this by moving the jumper cap to short pins 2-3 for a few seconds. When you clear the CMOS memory, the system must be turned off and the ATX power supply cable disconnected from the ATX power connector on the motherboard.
  • Page 9 Make the Optional Internal Connections 1. Install any expansion cards into the expansion slots. The system has two 32-bit PCI slots (PCI1, 2) and two 8/16-bit ISA slots (ISA1, 2). 2. If you have installed an internal fax/modem, cable the fax/modem to the modem wake up connector J11.

  • Page 10: System Bios

    System BIOS The system is installed with a programmable Award BIOS. The BIOS is stored on an erasable EEPROM so that updated BIOS can be flashed to the system using the flash BIOS utility in system software. The BIOS allows system integrators to set processor and timing parameters for maximum performance or maximum stability.

  • Page 11: Power Management Setup

    Power Management Setup This option lets users set power management timeouts for the system and install features such as LAN wake up, modem wake up, and so on. PNP/PCI Configuration This option configures assigns Plug and Play control to either the BIOS or the OS (if supported).

  • Page 12: System Software

    System Software The support software for this mainboard is supplied on either a CD-ROM disk, or a floppy diskette, depending on the configuration of the mainboard. Some mainboard configurations do not need all the software described in this chapter. ♦ Bus master IDE driver Please notice that the support software for this mainboard is supplied without IDE Bus Master Driver for the time being.
  • Page 13 6. In the next window, click the Have Disk button. The program then prompts you to type a path name where it can find the proper driver. The Graphics Driver can be found in the a:\vga\win95 directory of the disk provided. 7.

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