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Chapter 2

20

2.8

JP20 - CPU CLOCK DELAY

JP20 is for the CPU Clock Delay setting. Refer to Fig 2 for JP20 location.

JP20 -- CPU Clock Delay

2.9

JP5, JP6, JP7 - CPU FREQUENCY CONFIGURATION

JP5, JP6, & JP7 are for the CPU Frequency Configuration. Two different settings are provided for
different Clock Generator that is used at U16 or U17. Refer to Fig 2 for the location of U16/U17 and
jumpers.

JP5, JP6, JP7-- CPU Frequency Configuration

Note:

Winbond W83C17 and UMC U59515-01 are pin to pin compatible to MX-8315 and
PhaseLink PLL52C08-01 is pin to pin compatible to AV9107-03.

Table 7

Table 8

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Содержание GMB-486SG

Страница 1: ...GMB 486SG High Performance 486 VLB Motherboard User s Manual For GMB 486sg v2 Manual Edition 6 03 ...

Страница 2: ...ion Chapter 5 BIOS POST Messages provides references for all POST error messages Chapter 6 BIOS Default Drive Table provides a Default Drive Disk table contained in Setup WARNING For the system to operate normally please make sure JP16 of the mainboard is set as below Refer to Fig 2 in this manual for the location JP16 If JP16 is open no CMOS data can be retained The information presented in this ...

Страница 3: ...inted area of the system chassis before handling the mainboard or any component Doing so discharges the static charge the user s body may have built 2 Remove the mainboard from its anti static wrapping and place it on a grounded surface component side up 3 Inspect the mainboard for damage Shipping may have loosened integrated circuits from their sockets If any integrated circuit appears loose pres...

Страница 4: ...Y 20 2 9 JP5 JP6 JP7 CPU FREQUENCY CONFIGURATION 21 2 10 JP37 FLASH ROM JUMPER 21 2 11 MEMORY INSTALLATION 22 2 11 1 INSTALLING SIMM 25 CHAPTER 3 MAINBOARD INSTALLATION 27 3 1 COMPONENTS 27 3 2 INSTALLING THE MAINBOARD 28 3 3 CONNECTION THE MAINBOARD 28 3 3 1 CONNECTION LOCATIONS 29 3 4 CONNECTORS 29 3 4 1 CN1 KEYBOARD CONNECTOR 29 3 4 2 CN2 POWER SUPPLY CONNECTOR 30 3 4 3 J1 EXTERNAL BATTERY 30 3...

Страница 5: ...AGEMENT SETUP MENU 41 4 4 5 LOAD BIOS DEFAULTS MENU 43 4 4 6 LOAD SETUP DEFAULTS MENU 43 4 4 7 PASSWORD SETTING MENU 43 4 4 8 IDE HDD AUTO DETECTION MENU 44 4 4 9 SAVE EXIT SETUP MENU 44 4 4 10 EXIT WITHOUT SAVING MENU 44 CHAPTER 5 BIOS POST MESSAGE 45 5 1 POST BEEP 45 5 2 ERROR MESSAGES 45 ...

Страница 6: ...X5 133ADW CPUs Supports Cache Write back CPU P24T P24D Cx486S DX DX2 DX2V and Enhanced Am486DX2 DX4 Cyrix DX4 5x86 IBM 486 and AMD X5 CPUs 100 IBM PC AT compatible single chips 486 solution Provides power saving features to allow a system through the control of BIOS to reduce the CPU clock frequency down to 0MHz STOP CLOCK when the system is idle Supports Power Management Mode Supports the SMM and...

Страница 7: ...hannels and 16 Interrupt levels Three 16 bit I O slots one 8 bit I O slots and three Standard VESA Local Bus master slot Battery backup for CMOS configuration and real time clock calendar 8MHz AT Bus clock speed changeable by hardware or keyboard CPU clock adjustable by jumper 2 3 Baby AT board size 220mm W X 250mm L ...

Страница 8: ...Introduction 3 1 2 MAINBOARD COMPONENTS This section gives a brief description of key components on the mainboard Refer to Fig 1 for component locations Fig 1 Key Components of the Mainboard ...

Страница 9: ...provided on the mainboard Either with one master or three master slots The VESA Local Bus can support high speed video controllers and other peripherals such as hard disk controllers LAN adapters and so on Interface protocol depends on the CPU speed but protocol selection and switching is invisible to all add in boards software and end users The VESA Local Bus always remains totally transparent to...

Страница 10: ... display type and how to install memory modules Before beginning the configuration user should take the following precautions Turn off the power supply and unplug the power cord before begin Unplug all cables that connect the mainboard to any external devices 2 1 JUMPER AND MEMORY BANK LOCATIONS Fig 2 Jumper and Memory Bank Locations ...

Страница 11: ...rt processor at different speed Various jumpers are required to setup for installing different CPU Refer to Fig 2 for the jumpers location and set the jumper according to the following table JP8 JP10 JP15 JP21 JP22 JP24 JP25 JP30 JP31 JP34 JP36 JP38 CPU Type Configuration Table 1A CPU Type P24T Table 1B CPU Type P24D DX2 ...

Страница 12: ...Hardware Configuration 7 Table 1C CPU Type P24C DX4 OPTIONAL Table 1D CPU Type 486SX SLE 486SX ...

Страница 13: ...Chapter 2 8 Table 1E CPU Type 486DX DX2 SLE 486DX DX2 Table 1F CPU Type Cyrix 486S ...

Страница 14: ...Hardware Configuration 9 Table 1G CPU Type Cyrix 486DX DX2 Table 1H CPU Type UMC U5SX 486 ...

Страница 15: ...Chapter 2 10 For DX4 100 CPU Frequency 33MHz For DX4 120 CPU Frequency 40MHz Table 1I CPU Type Enhanced Am486DX2 DX4 3 45V A80486DX2 XXSV8B A80486DX4 1XXSV8B Table 1J CPU Type Am486DX2 3 45V Optional ...

Страница 16: ...Hardware Configuration 11 Table 1K CPU Type Am486DX4 3 45V Optional Table 1L CPU Type Cx486DX2 V66 3 6V Optional ...

Страница 17: ...Chapter 2 12 Table 1M CPU Type Cx486DX2 V80 4 0V Optional Table 1N CPU Type Cx5x86 IBM 486 4V3100GIC 3 3V ...

Страница 18: ...ardware Configuration 13 Table 1O CPU Type Cx486DX4 100 TI486DX2 80 IBM 486 4V3100GC 3 45V Cyrix Cx486DX4 100GP Table 1P CPU Type Am5x86 P75 3 45 Optional AMD X5 133ADW For 133MHz CPU CPU Frequency 33MHz ...

Страница 19: ... socket s location Install the 486 CPU as follows Caution Static electricity can damage the processor 1 Plug the 486 CPU into the socket with the notch corner aligned 2 Change the CPU type jumper setting according to the CPU Jumper Setting table on the previous pages Table 1Q CPU Type P24D DX4 Fig 3 Installing a CPU ...

Страница 20: ...Static Random Access Memory chips in sockets U1 U2 U3 U4 U5 U6 U7 U8 U11 The speed of the SRAM chips needed depends on the clock speed of the microprocessor 25MHz clock requires 25ns tag and 25ns data SRAM chips 33MHz 40MHz or 50MHz clock CPU requires 20ns tag and 20ns data SRAM chips 2 4 2 CACHE SIZE AND MEMORY LOCATIONS The table below describes the chip capacity and socket location required for...

Страница 21: ...Chapter 2 16 2 4 3 CACHE CHIP SOCKETS AND JUMPER LOCATIONS The diagram below describes the location of the cache chip sockets and cache jumpers Fig 4 Cache Jumper and Socket Locatio ...

Страница 22: ...d using jumpers JP1 JP3 JP33 while Tag RAM setting is configured using jumpers JP2 JP4 The following tables summarize the possible configuration JP1 JP3 JP33 Cache Jumper Setting JP2 JP4 Tag RAM Jumper Setting Note D Double Bank S Single Bank Table 3A Cache Jumper Setting Table 3B Tag RAM Jumper Sett ...

Страница 23: ... Review the section on static electricity precautions at the beginning of this manual and make sure that power to the mainboard is off 2 Align the chip so that the notched corner of the chip matches the notched corner of the socket 3 Align the pins with the socket holes 4 Carefully press the chip into the socket Fig 5 Installing a Cache Chip ...

Страница 24: ... Bus Clock Speed 2 6 JP16 CMOS RAM BATTERY SETTING Please set JP16 is for CMOS RAM battery as below Refer to Fig 2 for the location of JP16 JP16 CMOS RAM Battery Setting 2 7 JP17 MONITOR SETTING Set the jumper JP17 to configure the mainboard for either CGA monochrome OR VGA EGA display Refer to Fig 2 for the location of JP17 Set the jumper as below JP17 Monitor Setting Table 4 Table 5 Table 6 ...

Страница 25: ...JP7 are for the CPU Frequency Configuration Two different settings are provided for different Clock Generator that is used at U16 or U17 Refer to Fig 2 for the location of U16 U17 and jumpers JP5 JP6 JP7 CPU Frequency Configuration Note Winbond W83C17 and UMC U59515 01 are pin to pin compatible to MX 8315 and PhaseLink PLL52C08 01 is pin to pin compatible to AV9107 03 Table 7 Table 8 ...

Страница 26: ...Hardware Configuration 21 2 10 JP37 FLASH ROM JUMPER JP37 is for Flash ROM selection Refer to Fig 2 for its location JP37 Flash ROM Jumpers Table 9 ...

Страница 27: ...ow For best performance 70ns SIMMs are required BANK 0 BANK 1 BANK 2 BANK 3 MEMORY SIZE 1MB NONE NONE NONE 1MB 1MB 1MB NONE NONE 2MB 2MB NONE NONE NONE 2MB 1MB 1MB 2MB NONE 4MB 2MB 2MB NONE NONE 4MB 4MB NONE NONE NONE 4MB 1MB 4MB NONE NONE 5MB 1MB 1MB 4MB NONE 6MB 2MB 4MB NONE NONE 6MB 1MB 1MB 2MB 4MB 8MB 2MB 2MB 4MB NONE 8MB 4MB 4MB NONE NONE 8MB 8MB NONE NONE NONE 8MB 1MB 1MB 4MB 4MB 10MB 2MB 2M...

Страница 28: ...1MB 16MB NONE NONE 17MB 1MB 1MB 16MB NONE 18MB 2MB 16MB NONE NONE 18MB 2MB 2MB 16MB NONE 20MB 4MB 16MB NONE NONE 20MB 4MB 8MB 8MB NONE 20MB 2MB 2MB 4MB 16MB 24MB 4MB 4MB 16MB NONE 24MB 8MB 8MB 8MB NONE 24MB 4MB 4MB 8MB 8MB 24MB 8MB 16MB NONE NONE 24MB 4MB 8MB 8MB 8MB 28MB 16MB 16MB NONE NONE 32MB 32MB NONE NONE NONE 32MB 8MB 8MB 16MB NONE 32MB 8MB 8MB 8MB 8MB 32MB TO BE CONTINUED ...

Страница 29: ...B 32MB NONE 48MB 16MB 16MB 16MB 16MB 64MB 64MB NONE NONE NONE 64MB 16MB 16MB 32MB NONE 64MB 32MB 32MB NONE NONE 64MB 1MB 64MB NONE NONE 65MB 4MB 64MB NONE NONE 68MB 4MB 32MB 32MB NONE 68MB 4MB 4MB 64MB NONE 72MB 4MB 4MB 32MB 32MB 72MB 16MB 64MB NONE NONE 80MB 16MB 32MB 32MB NONE 80MB 8MB 8MB 32MB 32MB 80MB 16MB 16MB 64MB NONE 96MB 16MB 16MB 32MB 32MB 96MB 32MB 32MB 32MB NONE 96MB 64MB 64MB NONE NO...

Страница 30: ...orresponds to the socket pin 1 marking 3 Hold the module at a 70 degree angle to the socket and insert the module s connectors into the socket 4 Snap the module to a vertical position in the socket The module is fully inserted when retaining pegs snap into holes at each end of the module 5 To fill a bank repeat steps 1 through 4 until the sockets in each bank contain SIMMs 6 After installing memor...

Страница 31: ... 1 COMPONENTS The following components are recommended Case with standard chassis and hardware The mainboard fits most AT compatible cases Standard AT power supply 8 ohm speaker Floppy disk drive s 360KB 1 2MB or 1 44MB Hard disk drive optional Hard disk and floppy disk drive controller card Flat ribbon cables to connect the disk drive controller and the disk drive s Serial parallel interface card...

Страница 32: ...lled 5 From the bottom of the mainboard insert stand offs into the proper holes on the board and attach the mounting screws to the bottom of the case Note Some cases do not use stand offs and mounting screws in this case user can fasten the mainboard into the case with regular screws 6 Place the mainboard into the case and fasten the board securely with regular screws 3 3 CONNECTION THE MAINBOARD ...

Страница 33: ...Chapter 3 28 3 3 1 CONNECTIONLOCATIONS Fig 7 Connector Locations ...

Страница 34: ...r supply connector has twelve pin male header connectors Plug the dual connectors from the power directly onto the board connector CN2 Pin Description Pin Description 1 Power Good 7 Ground 2 5V DC 8 Ground 3 12V DC 9 5V DC 4 12V DC 10 5V DC 5 Ground 11 5V DC 6 Ground 12 5V DC Table 12 3 4 3 J1 EXTERNAL BATTERY The mainboard has a battery on board however user can also attach an external battery to...

Страница 35: ...hich is used to select the mainboard s clock speed 3 4 6 J4 TURBO LED CONNECTOR J4 is usually connected to a Turbo LED on front of the system case If the system board select is in Turbo mode the indicator will light during high speed operation Pin Description 1 Cathode 2 Anode Table 16 3 4 7 J5 SPEAKER CONNECTOR Attached the system speaker to connector J5 Pin Description 1 Data Out 2 Not Used 3 Gr...

Страница 36: ... 2 Not Used 3 Ground 4 Keyboard Inhibitor 5 Ground Table 19 3 4 10 JP26 GREEN PC BREAK SWITCH JP26 is for the Green feature activation Break Switch When JP26 is changed from open to close then open again the system will go to suspend mode immediately In suspend mode if JP26 is changed from open to close then open again the system will resume immediately 3 4 11 JP27 SM_LED CONNECTOR JP27 is used fo...

Страница 37: ...ch with four wires Connect these cables to the disk drives 3 Adapter Cards Insert each adapter card Disk Controller cards Video card Serial Parallel Interface card etc into an expansion slot Refer to the installation and configuration instructions that comes with the card Connect the disk drives to the Floppy Disk and Hard Disk Controller cards 4 Keyboard Connect the keyboard to its connector 5 Di...

Страница 38: ...age appears briefly at the bottom of the screen during the POST Power On Self Test press Del key or simultaneously press Ctrl Alt and Esc keys TO ENTER SETUP BEFORE BOOT PRESS CTRL ALT ESC OR DEL KEY If the message disappears before you respond and you still wish to enter Setup restart the system to try again by turning it OFF then ON or pressing the RESET button on the system case You may also re...

Страница 39: ...Change colour from total 16 colors F3 key Calendar only for Status Page Setup Menu F4 key Reserved F5 key Restore the previous CMOS value from CMOS only for Option Page Setup Menu F6 key Load the default CMOS value from BIOS default table only for Option Page Setup Menu F7 key Load the default F8 key Reserved F9 key Reserved F10 key Save all the CMOS changes only for Main Menu 4 3 GETTING HELP Mai...

Страница 40: ...ys to select among the items and press Enter to accept or enter the sub menu ROM ISA BIOS 2C4I9G30 CMOS SETUP UTILITY AWARD SOFTWARE INC STANDARD CMOS SETUP BIOS FEATURES SETUP CHIPSET FEATURES SETUP POWER MANAGEMENT SETUP LOAD BIOS DEFAULTS LOAD SETUP DEFAULTS PASSWORD SETTING IDE HDD AUTO DETECTION SAVE EXIT SETUP EXIT WITHOUT SAVING Esc Quit Select Item F10 Save Exit Setup Shift F2 Change Color...

Страница 41: ...lue you want in each item ROM ISA BIOS 2C4I9G30 STANDARD CMOS UTILITY AWARD SOFTWARE INC Date mm dd yy Thu Mar 3 1994 Time hh mm ss 11 23 53 CYLS HEADS PRECOMP LANDZONE SECTORS MODE Drive C None 0Mb 0 0 0 0 0 Drive D None 0Mb 0 0 0 0 0 Drive A 1 44M 3 5in Drive B None Video EGA VGA Halt On All Errors Base Memory 640K Extended Memory 3072K Expanded Memory 0K Other Memory 384K Total Memory 4096K Esc...

Страница 42: ...oot Up Numlock Status On Boot Up System Speed High IDE HDD Block Mode Disabled Gate A20 Option Fast Typematic Rate Setting Disabled Typematic Rate Chars Sec 6 Typematic Delay Msec 250 Security Option Setup Video BIOS Shadow Enabled C8000 CFFFF Shadow Disabled D0000 D7FFF Shadow Disabled D8000 DFFFF Shadow Disabled E0000 E7FFF Shadow Disabled E8000 EFFFF Shadow Disabled ESC Quit Select Item F1 Help...

Страница 43: ...atch Local Bus T3 Local Bus Ready Synchronize ESC Quit Select Item F1 Help PU PD Modify F5 Old Values Shift F2 Color F6 Load BIOS Defaults F7 Load Setup Defaults Fig 11 Default Setting for Cx486DX 40MHz CPU Note 1 the following table shows the settings for different CPU Support System Clock Freq 20MHz 25MHz 33MHz 40MHz 50MHz CPU Internal Clock Freq x1 x1 x2 x3 x1 x2 x3 x1 x2 x1 AT Bus Clock 1 3CLK...

Страница 44: ...evice Disable Video Activities Disable DMA Activities Enable IRQ 1 Keyboard Enable IRQ 3 COM 2 Enable IRQ 4 COM 1 Enable IRQ 5 LPT or LAN Enable IRQ 6 Floppy Disk Enable IRQ 7 LPT or LAN Enable IRQ 8 RTC OS2 Disable IRQ 9 Reserved Enable IRQ 10 Reserved Enable IRQ 11 Reserved Enable IRQ 12 PS2 mouse Enable IRQ 13 387 Enable IRQ 14 Hard Disk Enable IRQ 15 Reserved Enable ESC Quit Select Item F1 Hel...

Страница 45: ...le IRQ 9 Reserved Enable IRQ 10 Reserved Enable IRQ 11 Reserved Enable IRQ 12 PS2 mouse Enable IRQ 13 387 Enable IRQ 14 Hard Disk Enable ESC Quit Select Item F1 Help PU PD Modify F5 Old Values Shift F2 Color F6 Load BIOS Defaults F7 Load Setup Defaults Fig 12B Normal 486 CPU Note 1 If the CPU does not belong to Intel S series Enhanced Am486DX or Cx486S S2 DX DX2 the system will support IRQ service...

Страница 46: ...Type the password up to eight characters and press enter The password typed now will clear any previously entered password from CMOS memory You will be asked to confirm the password Type the password again and press Enter You may also press Esc to abort the selection and not enter a password To disable password just press Enter when you are prompted to enter password A message will confirm the pas...

Страница 47: ...The BIOS support 3 HDD Mode NORMAL LBA LARGE NORMAL mode has the maximum 528MB HDD size LBA Logical Block Addressing mode has the maximum 8 4GB HDD size whereas LARGE mode has the maximum 1GB HDD size 4 4 9 SAVE EXIT SETUP MENU When you select this function the following message will appear at the centre of the screen to assist you to Save data to CMOS and Exit the Setup SAVE to CMOS and EXIT Y N ...

Страница 48: ...ress Enter If you assumed the system would boot from hard drive make sure the controller is inserted correctly and all cables are properly attached Also be sure the disk is formatted as a boot device Then reboot the system DISKETTE DRIVES OR TYPES MISMATCH ERROR RUN SETUP Type of diskette drive installed in the system is different from the CMOS definition Run Setup to reconfigure the drive type co...

Страница 49: ...onfiguration Utility KEYBOARD ERROR OR NO KEYBOARD PRESENT Cannot initialize the keyboard Make sure the keyboard is attached correctly and no keys are being pressed during the boot If you are purposely configuring the system without a keyboard set the error halt condition in Setup to HALT ON ALL BUT KEYBOARD This will cause the BIOS to ignore the missing keyboard and continue the boot Memory Addre...

Страница 50: ... to run the EISA Configuration Utility Should Have EISA Board But Not Found PLEASE RUN EISA CONFIGURATION UTILITY The board installed is not responding to the ID request or no board ID has been found in the indicated slot NOTE When this error appears the system will boot in ISA mode which allows you to run the EISA Configuration Utility Slot Not Empty Indicates that a slot designated as empty by t...

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