TRUB GREEN YL-BI-JS True Green Main Board User Manual

TRUB GREEN YL-BI-JS True Green Main Board

Specifications

• Support all 486 family CPU
• Includes INTEL 486/DX/DX21SL|DX4, AMD 486/DX SERIALS, CYRIX 486 SERIALS
• Cover speed from 25Mhz to 100Mhz using clock generator Chip
• Uses SIS 471 Chips for system logic implementation
• Built-in Rtc in 85c407 Chips
• Direct Mapped Cache controller supporting 0l{1256W 2nd level Cache
• Supports up to 128MB of DRAMS with various DRAM types
• Supports Power Management Mode with various features
• One 8-bit and Six 16-bit ISA Slots
• Single AWARD BIOS (64kx8)
• Dimension: 213 Baby ar Size (246 mm X 215 mm)
• Warranty: One Year

Product Usage Instructions

• Motherboard Layout and Jumper Settings
  Refer to the motherboard layout diagram for the location of jumpers, connectors, and memory banks. Adjust CPU configurations, CPU clock selection, cache size selection, DRAM bank selection, internal clock selection, and VESA selection as needed based on the provided jumper settings.

• Memory Configuration and BIOS Setup
  Configure memory settings in the BIOS setup, including BIOS features setup, CHIPSET features setup, and Power Management setup to ensure optimal performance.

• Features Setup
  Utilize the various features of the motherboard including support for different CPU families, cache controllers, DRAM types, power management modes, expansion slots, and BIOS configuration.

• Expansion Slots and BIOS
  Utilize the available expansion slots for additional components and ensure proper functioning by configuring the Single AWARD BIOS.

FAQ

• Q: What is the warranty period for the product?
  A: The product comes with a one-year warranty.

• Q: What type of CPUs are supported by the motherboard?
  A: The motherboard supports all 486 family CPUs including INTEL 486/DX/DX21SL|DX4, AMD 486/DX SERIALS, and CYRIX 486 SERIALS.

• Q: How many expansion slots are available on the motherboard?
  A: There is one 8-bit and six 16-bit ISA slots available on the motherboard.

“VL-BUS
TRUE GREEN MAIN BOARD USER’S MANUAL

AV7542
GREEN MAIN BOARD

AV7542
Mainboard Quick Reference

DATE : 07-20-1994
Trademarks

• IBM is a registered trademark ofTnternational Business Machines.
• fNTEL and 80486 are registered trademark of fNTEL Corporation.
• AMI is a registered trademark of American Megatrends lnc.
• VESA VL-Bus is a registered trademark of Video Electronics Standard Association. All Rights Reserved 1994 March, 1994

INTRODUCTION

The 486 motherboard is based on a 486 CPU and is ideal for building system that meet the requirements of current and future software applications, Gills, and operating systems.

Features

1. Support all 486 family CPU.

   •  Include INTEL 486/DX/DX2/SL/DX4
   • AMO 486/DX SERIALS CYRJX 486 SERIALS
   •  Cover speed forn1 25 Mhz to l 00 Mhz use clock generator Chip

2. CHIPS :

   •  Use SIS 471 Chips to implement system logic
   • Use built-in Rte in 85c407 Chips

3. SRAM:

   • Direct Mapped Cache controller
   • Supports 0K/256K/ 2nd level Cache
   • Supports l l Cache Write Back CPU( P24T/P24D/ M6/M7) System.

4. DRAM:

   • Three Banks up to 128MB of DRAMS
   • lM/2M/4M/16MxN DRAM Type
   • Supports 30/72 Btye SIMMS Module
   •  Suppo1ts Double-Sided Simms Module (72 PIN SIMM)

5. Supports Power Management Mode:

   • Supports the SMM and the SMI
   • CPU stop clock function
   • Three Power saving states (Nom1al/Standby/Suspend)
   • Long and Short system timers
   • Supports the AMP control
   • Supports Break Switch control
   • Power saving also on NON-SMI CPU
   • More system Event Monitoring and the Power Saving control

6. Expansion SLOTS
   One 8-bat and Six 16 bat ISA Slots (Including two
   Master Mode & One Slave Mode VESA Local bus slots)

7. BIOS :
   Single AWARD BlOS (64kx8)

8. 8P DIMENSION :
   2/3 Baby at Size (246 mm X 215 mm)

9. WARRANTY :
   One Year

NOTE:   USING CLOCK GENERATOR FOR EASY-TO-UPGRADE/DOWN

LAYOUT

1. i486 DX/SX/DX2 CPU or P24C
2. VESA Local Bus Slots CPU (Outer Socket)
3. 72 Pin SIMM Socket SIS
4. C471 Single Chip
5. 30 Pin SIMM Socket
6. SIS 85C407 Buffer
7.  System BIOS
8. Keyboard Controller
9. Cache Data RAM
10.  Cache Tag RAM
11. ISA slots
12.  Power Connector
13.  Keyboard Connector
14.  Batty

• J3 CMOS Data Reset Jumper J18 CPU Clock Selection
• J7,J8,J9 DRAM Banks Selecting
• JI O,Jll,Jl2,Jl3,Jl4,Jl5,Jl 6,Jl 7
• CPU Configurating 1-3
• J20 SMI Out Connector
• J21-25 Daughter-Board ON 5V OFF S.SV Connector
• J26 CPU Brand Select
• J27 Case Device Connectors

HARDWARE CONFIGURATTON

CPU CONFIGURATTON : i17,16,15,14,13,1 Jl0

CPU Clock Selection (For MX8315 clock generator) : J18

CPU Clock Selection (For MX8315 clock generator) : J18

Interal Clock Selecting : JIl

Internal Clock Selecting : JIl

CMOS Data Reset Jumper : J3

CONNECTORS

• KERBOARD CONNECTOR : J1
• POWER CONNECTOR : J2
• SMI OUTPUT CONNECTOR : J20

Case Dev ice Connectors : J27
Tore connector 127 attaches various case-mounted deuces to the motherboard as in the diagram below Refer to the follovving page for connector pin descriptions.

Cache Requirements

CPU Speed
You can switch the CPU speed between full speed and slow speed with the following commands:

• \+ +<->Slow speed
• \+ +<+> Full speed
• Nom1ally you should use the full speed mode. In the above commands, you should use the plus(+) and minus(-) keys on the numeric keypad.
• CPU DX/DX2 and DX4 Setting : j30
• J30 CPU
• 1-2 DX/DX2
• 2-3 DX4

Memory Configuration
The mother bored supports three banks single-sided 1MB, 4MB, 16MB, and 64MB double-sided 2MB, 8MB, 32MB,fast-page-mode DRAM modules. The motherboard requires DRAM of at least 80ns RAS* access time.

(DJ = double si<led DRAM ,all others are single sided DRAM.

• As the 30& 72 pin module are installed Simultaneously, the 15 and 16 MUST BE setforpinl-2short.

30-PIN SIMMs 72-PlN SIMMs JUMPERs

There are SIX DRAM sockets ( S[MMS 1-4, SIMMs 7 and S[MMs 8) FOR 3 DRAM banks. Please refer 10 above table to setup your  DRAM configuration.

BIOS Setup

Software setup is accomplished via Basic Input-Output System (BIOS) programming. You set up the BIOS program to tell the operating system what devices are connected to the motherboard.
AWARD BIOS Setup
The BIOS setup program provided will Lye main board is the AWARD BIOS .

1. Tum on or reboot the system. After a series of diagnostic check, the following message appears:
2. Choose parameter an Lo option ranch and the press option . installed in Modify the the system. system  (See the following scolions for more information.)
3. Press at anytime to return to the Main Menu.
4.  In the Main Menu, choose SAVE & EXIT SETUP to save your change and reboot the system. Choosing

ignores your changes and. exits the program.

BLOS FEATURES SETUP

The following explains the options for each entry, and in the default set1ings (Setup Defaults) for this screen.

Virus Protection
The Virus Warning default setting is “Enabled”. When cabled ,his feature protects the boot sector and partition table of your hard disk. Any attempt to write to them will halt the system and cause a warning message to appear. If this happens, you can either allow the operation to continue, or stop it to use an anti-virus on a virus-free, bootable, floppy disk to reboot and investigate your system.

Cache Control

•  The CPU Internal Cache default setting is “Enabled”. This setting enables the internal CPU cache. Turning the cache off will slow down the system. The BIOS default settings will disable it. Leave it enabled unless you are troubleshooting a problem.
• The External Cache default setting is “Enabled”. This setting enables the secondary cache. Leave it enabled unless you are troubleshooting a problem.

Boot Up Features

• The Quick Power On Self Test default setting is “Enabled”. ff enabled, this will speed up the Power On Self Test (POST}, by skipping some items that are normally checked during the POST. Once your system is functioning normally, you can use this feature to speed the boot up process.
• The Boot Sequence default setting is “C: . A:”. the other option is “A: , C:”. The setting determines where the computer looks first for an operating system, the hard disk or the floppy drive.
• The Swap Floppy Drive default setting is “Disabled”. When enabled, the BJOS will sec the hardware Drive A: as Drive B: and hardware Drive B: as Drive A:. You can use this feature to boot from different
• size disks.
• Tboot Up Floppy Seek default setting is “Disable”. When enabled, the BIOS will check whether there is a 360KB floppy disk drive installed. Don’t change the default setting, unless your system has a 360KB floppy disk drive.
• Boot Up NumLock Status is a convenience feature. When the computer boots, this setting defines which function, the numeric values, or the cursor controls, will function on the numeric keypad of
• IBM-compatible keyboards. The extended keyboards supplied with most compatible system have separate cursor control key. It is there-fore unnecessary to use the numeric keypad to control the: cursor. The default setting is” ON “.
• Boot Up System Speed is a convenience feature. When the computer boots, this setting sets the CPU speed. The default setting is “High”.
• The IDE HOD Block Mode default setting is “Disabled” This feature enhances hard disk performance by making_ multi-sector transfers, instead of one sector per transfer. Most £DE drives, except very early designs, can use this feature.
• The Gate A20 Option default setting is “Fast”. This is the optimum setting for this motherboard.
• Keyboard Interface
• The Typematic Rate Setting default setting is “Disabled”. If enabled, you can set the typematic controls that follow.
• The Typematic Rate ( Char /Sec ) controls the speed at which the system registers repeated keystrokes. The choices range from “6 to 30” characters per second (default is 6).
• The Typematic Delay ( Msec ) controls the time between the disply of the first and second characters. There are four delay rate choices: “250ms, 500ms, 750ms, and l000ms”. (default is 250ms).
• The Secur ity Option controls the password Setting in the main screen. The default setting is Setup. This will allow the system to boot, and use the password only to protect the Setup Utility configuration setting from being tampered with. The other setting, “System”, uses the Password feature every time you boot up. You create a password by using the ” HANGE PASSWORD ” command from the main screen, as explained later in this section.

Shadow Control

• The default setting for the Video BIOS Shadow is “Enabled”. This copies the video display card BIOS into system DRAM to improve perform:rnce.
• The next three lines, “C8000-CFFFF Shadow to E8000-EFFFF Shadow ” arc for shadow other expansion card ROMs. The default setting for these areas is “Disabled”. [f you have other expansion card with ROMs on them, you will need to knoew which specific addresses the RO Ms using to shadow them. If you don’t know, and cannot find out, you can enable all of the ROM shadow settings. This ensures that any ROMs present will be shadowed. It will also reduce the memory available by between 640KB and I 024KB.
• ARcr you have made your selections in the BIOS FEATURES SETUP press the key to go back to the main screen . The next item is CHIPSET FEATURES SETUP.
• The Auto-Configuration default is “Enabled”. This item auto-matically configures the Advanced Chipset settings.
• The AT Bus Clock default is CPU dependent. This setting is controled by the11Auto configuration” Function.
• DRAM Setting and Write Controls
• The RAM Speed default is controled by the ” AUTO Configuration” Function.
• The RAM Write WS default is controlled by the
• “AUTO Configuration II Function.

The DRAM Write CAS default is controlled by the  AUTO Configuration ” Function Setting.

• The DRAM Write Burst default is ” Disabled It This is the optimum setting for this mainboard.
• The Slow Refresh default is II Disabled “. This is the optimum setting for this mainboard.
• The Hidden Refresh default is ” Enabled “. This is the optimum setting for this ma inboard.

Cache Control

• The Internal Cache WB/WT default is Write-Thru. This is standard  for most i486 CPU caches P24D, P24D, CYRIX M6/M7/ DX2 CPUs can also use the ” J,flrite-Back” cache scheme.
• The Cache Burst Read default is CPU dependent. This is controlled by the “AUTO Configuration ” setting.
• The Cache Write Cycle default is CPU dependent. This is controlled by the” AUTO Configuration “setting.
• The System Shadow and Video Shadow default setting are

Non-cacheable

• These setting prevent the system and video Boise’s from being cached.
• The Memory Relocation choose Enabled or Disabled. TI1is option adds a few segments of 64 KB size to memory above the IM boundary when Enabled. The remapped memory size is related closely to the SHADOW RAM function.

POWER MANAGEMENT SETUP

The settings on this screen are for the power management setup. They control the ma inboard Green features. The video features of this setup work with Green monitors. They alos work with Non-green monitors using a Green power supply connected to the SMI OUT pins, J20 IF you are using an DX CPU, then functions on this screen will work, but not stop CPU clock.

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