User manual GIGABYTE GA-686LX

[. . . ] GA - 686LX USER'S MANUAL Pentium® II Processor MAINBOARD REV. 1 First Edition GA-686LX The author assumes no responsibility for any errors or omissions which may appear in this document nor does it make a commitment to update the information contained herein. Third-party brands and names are the property of their respective owners. SEPTEMBER 03, 1997 Taipei, Taiwan 2 Table of Contents TABLE OF CONTENTS 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1. 1. PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1. 2. [. . . ] q Supports 8 MB - 1 GB EDO / 512MB SDRAM memory on board. q Supports ECC or Non-ECC type DRAM module. q 1xAGP slot, 4xPCI Bus slots, 3xISA Bus slots. q Supports 2 channels Ultra DMA/33 IDE ports for 4 IDE Device. q Supports 2xCOM (16550), 1xLPT (EPP / ECP), 1x1. 44MB Floppy port. q Supports 2xUSB ports, 1xPS/2 Mouse & 1xPS/2 Keyboard ports. q Licensed AWARD BIOS, 2M bit FLASH RAM. 1-1 GA-686LX q ATX form factor, Double stack I/O connector, 4 layers PCB. 1. 3. PERFORMANCE LIST The following performance data list is the testing results of some popular benchmark testing programs. These data are just referred by users, and there is no responsibility for different testing data values gotten by users. (The different Hardware & Software configuration will result in different benchmark testing results. ) · CPU · DRAM · CACHE SIZE · DISPLAY · STORAGE · O. S. · DRIVER Pentium® II processor 64 MB SDRAM 512 KB included in CPU Matrox Millennium II 4MB PCI VGA Onboard IDE port Windows95 OSR2. 0. Display Driver at 1024 x 768 x 64K colors x 75Hz. Triones Bus Master IDE Driver 3. 60K Processor Winbench97 CPU mark32 Business Disk Hi-End Disk Business Graphic Hi-End Graphic Winstone 97 Business Intel Pentium® II 266MHz 697 2210 5890 116 50. 8 62 300MHz 783 2260 6490 127 56. 3 64. 9 1-2 Introduction Hi-End 1. 4. BLOCK DIAGRAM 30. 6 32. 6 AGP SLOT SLOT1 Host Bus 3. 3V EDO/SDRAM DIMM Sockets AGP Bus PAC 82443LX CHIPSET DRAM Bus PCI Bus 33MHz 66MHz 66MHz Ultra DMA/33 IDE Ports PCI Bus IDE Bus 33MHz 33MHz 14. 318MHz 48MHz CLOCK GEN SC652EY B 66MHz 14. 318MHz 66MHz 8MHz ISA Bus PIIX4 82371AB CHIPSET USB Bus USB #1 24MHz USB #2 COM Ports I/O 8661 CIPSET LPT Port Floppy Port PS/2 Keyboard KBC 8042 ISA Slots 1-3 PS/2 Mouse 14. 318MHz GA-686LX 1. 5. INTRODUCE THE Pentium® II Processor & AGP Figure 1:Retention Mechanism & attach Mount Figure 2:OEM Pentium® II Processor 1-4 Introduction Figure 3:Heatsink / FAN & Heat sink support for OEM Pentium® II Processor Figure 4:Boxed Pentium® II Processor & Heat sink support 1-5 GA-686LX What is AGP? The Accelerated Graphics Port (AGP) is a new port on the Host-To-PCI bridge device that supports an AGP port. The main purpose of the AGP port is to provide fast access to system memory. The AGP port can be used either as fast PCI port (32-bit at 66MHz vs. 32-bits at 33MHz) or as an AGP port which supports 2x data-rate, a read queue, and side band addressing. When the 2x-data rate is used the port can transmit data at 533Mb/sec (66. 6*2*4). The read-queue can be used to pipeline reads ­ removing the effects of the reads-latency. Side band addressing can be used to transmit the data address on a separate line in order to further speed the transaction. 1-6 Specification 2. SPECIFICATION 2. 1. HARDWARE · CPU · PROTECTION - Pentium® II processor 233 ­ 633 MHz. [. . . ] If there is a wrong direction of Pin 1, the DRAM DIMM module couldn't be inserted into socket completely. 3. 5. CPU SPEED SETUP The system's speed is fixed to 66. 6MHz. The user can change the DIP SWITCH (S1) selection to set up the CPU speed for 233 - 633MHz processor. The CPU speed must match with the frequency RATIO. [. . . ]