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Chapter 2

6

2.2

JP4-JP17, S4-S6 - CPU TYPE CONFIGURATION

The mainboard can support different 486 processors. JP4-JP17 select CPU type and S4-S6 select the
CPU voltage. Refer to Fig 2 for the jumpers’ location, and set the jumper according to the following
table:

Table 1A: CPU Type: - 486SX (5V)

Table 1B: CPU Type: - 486DX/DX2 (5V)

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Summary of Contents for GMB-486SPS

Page 1: ...GMB 486SPS High Performance 486 PCI Motherboard User s Manual For GMB 486sps v0 Manual Edition 1 03 ...

Page 2: ...nfiguration 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 JP38 of the mainboard is set as below Refer to Fig 2 in this manual for the location JP38 If JP38 is open no CMOS data can be retained The information presented ...

Page 3: ...g precautions while unpacking and installing the mainboard 1 Touch an unpainted 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 integrate...

Page 4: ...7 JP52 JP53 PARALLEL PORT SETTING AND ECP DMA SELECTION 25 2 11 MEMORY INSTALLATION 26 2 11 1 INSTALLING SIMM 29 CHAPTER 3 MAINBOARD INSTALLATION 31 3 1 COMPONENTS 31 3 2 INSTALLING THE MAINBOARD 32 3 3 CONNECTION THE MAINBOARD 32 3 3 1 CONNECTION LOCATIONS 33 3 4 CONNECTORS 33 3 4 1 J1 RESET SWITCH CONNECTOR 33 3 4 2 J2 TURBO LED CONNECTOR 34 3 4 3 J3 KEYLOCK POWER LED CONNECTOR 34 3 4 4 J4 SPEAK...

Page 5: ...NU 46 4 4 4 POWER MANAGEMENT SETUP MENU 47 4 4 5 PCI CONFIGURATION SETUP MENU 49 4 4 6 LOAD BIOS DEFAULTS MENU 50 4 4 7 LOAD SETUP DEFAULTS MENU 50 4 4 8 PASSWORD SETTING MENU 50 4 4 9 IDE HDD AUTO DETECTION MENU 51 4 4 10 HDD LOW LEVEL FORMAT MENU 52 4 4 11 SAVE EXIT SETUP MENU 54 4 4 12 EXIT WITHOUT SAVING MENU 54 CHAPTER 5 BIOS POST MESSAGE 55 5 1 POST BEEP 55 5 2 ERROR MESSAGES 55 CHAPTER 6 BI...

Page 6: ...Enhanced Am486DX2 DX4 IBM 486 4V3100GIC GC SGS Thomson 486DX DX2 DX4 TI 486DX2 DX4 100 IBM PC AT and PCI 2 0 compatible 486 PCI 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 the SMI CPU Stop Clock Function Long and Short Syste...

Page 7: ...M refresh support Support 7 Direct Memory Access channels and 16 Interrupt levels Four 16 bit I O slots and four PCI Local Bus slots 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 User Defined Password to inhibit illegal access 2 3 Baby AT board size 220mm W X 250mm L ...

Page 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 ...

Page 9: ...t adapts the high performance and supports the future standard on the PC industry Four PCI slots are provided on the mainboard support up to three Bus Master devices PCI BIOS supports the PCI device configuration and fully compatible with existing drivers and application software Synchronous Bus operates in 32 bit with up to 40MHz ...

Page 10: ...efore 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 In Appendix A CPU Type Configuration Table and Voltage Selection Table are provided for reference 2 1 JUMPER AND MEMORY BANK LOCATIONS Fig 2 Jumper and Memory Bank Locations ...

Page 11: ...he mainboard can support different 486 processors JP4 JP17 select CPU type and S4 S6 select the CPU voltage Refer to Fig 2 for the jumpers location and set the jumper according to the following table Table 1A CPU Type 486SX 5V Table 1B CPU Type 486DX DX2 5V ...

Page 12: ...Hardware Configuration 7 JP4 JP17 S4 S6 CPU Type Configuration Table 1C CPU Type SLE 486SX 5V Table 1D CPU Type SLE 486DX DX2 5V ...

Page 13: ...Chapter 2 8 For 63MHz CPU clock set to 25MHz For 83MHz CPU clock set to 33MHz Table 1E CPU Type P24T PENTIUM OVERDRIVE PODP5V 5V Table 1F CPU Type P24D 486DX2 EW5V 5V ...

Page 14: ...Hardware Configuration 9 Table 1G CPU Type P24D 486DX4 EW3V 3 3V Table 1H CPU Type P24C DX4 3 3V ...

Page 15: ...Chapter 2 10 Table 1I CPU Type Am486DX2 3 45V A80486DX2 XXNV8T Table 1J CPU Type Am486 DX4 3 45V A80486DX4 100NV8T ...

Page 16: ...on 11 For 120MHz CPU CPU Clock Frequency 40MHz For 100MHz CPU CPU Clock Frequency 33MHz Table 1K CPU Type Enhanced Am486DX2 3 45V A80486DX2 XXSV8B Table 1L CPU Type Enhanced Am486DX4 3 45V A80486DX4 1XXSV8B 1XX 100 120MHz ...

Page 17: ...Chapter 2 12 For 133MHz CPU CPU Clock Frequency 33MHz Table 1M CPU Type Am5x86 P75 3 45V AMD X5 133ADW Table 1N CPU Type Cx486S2 5V ...

Page 18: ...Hardware Configuration 13 Table 1O CPU Type Cx486DX DX2 5V Table 1P CPU Type Cx486DX2 V66 3 6V ...

Page 19: ...Chapter 2 14 Table 1Q CPU Type Cx486DX2 V80 4 0V Table 1R CPU Type Cx486DX4 100GP4 ST 486DX4V10HS 3 45V ...

Page 20: ...n 15 1XX 100 120MHz For 120MHz CPU CPU Clock Frequency 40MHz For 100MHz CPU CPU Clock Frequency 33MHz Table 1S CPU Type Cx486DX4 100GP TI486DX2 80 IBM486 4V3100GC 3 45V Table 1T CPU Type Cx5x86 1XXGP IBM 486 4V3100GIC 3 3V ...

Page 21: ...Chapter 2 16 Table 1U CPU Type UMC U5SX 486 5V ...

Page 22: ...in Chapter 1 for the 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 Fig 3 Installing a CPU ...

Page 23: ...rough operation The mainboard allows 128KB 256KB 512KB and 1024KB cache configurations Memory size is selected by the hardware jumpers and the BIOS setup program 2 4 1 UPGRADING CACHE The mainboard is available with an optional 128KB 256KB 512KB or 1024KB cache memory on board User can upgrade cache memory by installing additional SRAM Static Random Access Memory chips in sockets U13 U20 U11 The s...

Page 24: ...0 BANK 1 TAG RAM Cache Size U13 U14 U15 U16 U17 U18 U19 U20 U11 128K 32Kx8 32Kx8 32Kx8 32Kx8 NONE NONE NONE NONE 8Kx8 256K 32Kx8 32Kx8 32Kx8 32Kx8 32Kx8 32Kx8 32Kx8 32Kx8 16Kx8 32Kx8 256K 64Kx8 64Kx8 64Kx8 64Kx8 NONE NONE NONE NONE 16Kx8 32Kx8 512K 128Kx8 128Kx8 128Kx8 128Kx8 NONE NONE NONE NONE 32Kx8 1024K 128Kx8 128Kx8 128Kx8 128Kx8 128Kx8 128Kx8 128Kx8 128Kx8 64Kx8 Table 2 Cache Size Configurat...

Page 25: ...umpers JP19 JP24 JP26 while Tag RAM setting is configured using jumpers JP20 JP22 JP27 The following tables summarize the possible configuration JP19 JP24 JP26 Cache Jumper Setting JP20 JP22 JP27 Tag RAM Jumper Setting Note D Double Bank S Single Bank Table 3A Cache Jumper Setting Table 3B Tag RAM Jumper Setting ...

Page 26: ... chip 1 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 ...

Page 27: ...attery as below Refer to Fig 2 for its location JP38 CMOS RAM Battery Setting 2 6 JP33 MONITOR SETTING Set the jumper JP33 to configure the mainboard for either Monochrome or Color display Refer to Fig 2 for its location Set the jumper as below JP33 Monitor Setting Table 4 Table 5 ...

Page 28: ...guration 23 2 7 S1 S3 JP3 JP18 CPU CLOCK FREQUENCY CONFIGURATION S1 S3 JP3 JP18 are for the CPU Clock Frequency Configuration Refer to Fig 2 for their location S1 S3 JP3 JP18 CPU Clock Frequency Configuration Table 6 ...

Page 29: ... SELECTION JP51 is for Parallel Port IRQ selection Refer to Fig 2 for its location JP51 Parallel Port IRQ Selection 2 10 JP36 JP37 JP52 JP53 PARALLEL PORT SETTING AND ECP DMA SELECTION JP36 JP37 JP52 JP53 are for Parallel Port Setting and ECP DMA Selection Refer to Fig 2 for their location JP36 JP37 JP52 JP53 Parallel Port Setting and ECP DMA Selection Table 7 T Table 9 ...

Page 30: ...wed below 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...

Page 31: ...B 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 ...

Page 32: ...8MB 8MB 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 N...

Page 33: ...nds 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 memory run B...

Page 34: ...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 1 44MB or 2 88MB Hard disk drive optional Flat ribbon cables to connect the on board FDD HDD connectors and the disk drive s Flat ribbon cables to connect the on board serial parallel and game ...

Page 35: ... 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 Once t...

Page 36: ...Mainboard Installation 31 3 3 1 CONNECTION LOCATIONS Fig 7 Connector Locations ...

Page 37: ...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 12 3 4 3 J3 KEYLOCK POWER LED CONNECTOR J3 is a keylock connector that enables and disables the keyboard and the Power LED on the case Pin Description 1 LED Power 2 Not Used 3 Ground 4 Keyboard Inhibitor 5 Ground Table 13 3 4 4 J4 SPEAKER CONNECTOR Attached ...

Page 38: ...resume immediately 3 4 7 J7 HARD DISK LED CONNECTOR J7 connects to the HDD LED in front of the system case Pin Description 1 Anode 2 Cathode 3 Cathode 4 Anode Table 16 3 4 8 J8 EXTERNAL BATTERY The mainboard has a battery on board however user can also attach an external battery to connector J8 Using an external battery helps to conserve the on board battery Pin Description 1 VDD 6V 2 Not Used 3 G...

Page 39: ...or its location 3 4 13 J16 ON BOARD GAME PORT CONNECTOR J16 is a 16 pin Game Port connector Refer to Fig 7 for its location 3 4 14 J17 ON BOARD PARALLEL PORT CONNECTOR J17 is a 26 pin Parallel connector Refer to Fig 7 for its location 3 4 15 J18 ON BOARD FDD CONNECTOR J18 is a 34 pin Floppy Disk connector Refer to Fig 7 for its location 3 4 16 J19 KEYBOARD CONNECTOR A standard five pin female DIM ...

Page 40: ...meters in CMOS Case B Set Drive C to Master and connect it on IDE 0 connector and Drive D to Master and connect it on IDE 1 connector Set Drive C disk parameters in CMOS only 2 4 Drives System Set Drive C to Master and Drive D to slave and connect both drives on IDE 0 connector Set Drive E to Master and Drive F to slave and connect both drives on IDE 1 connector Set Drives C and D disk parameters ...

Page 41: ...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 instruction that comes with the card Connect the disk drives to the Floppy Disk Controller card and built in IDE HDD connectors 4 Keyboard Connect the keyboard to its connec...

Page 42: ...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...

Page 43: ...Change color 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 Main...

Page 44: ...ems and press Enter to accept or enter the sub menu ROM PCI ISA BIOS 2A4IBG32 CMOS SETUP UTILITY AWARD SOFTWARE INC STANDARD CMOS SETUP BIOS FEATURES SETUP CHIPSET FEATURES SETUP POWER MANAGEMENT SETUP PCI CONFIGURATION SETUP LOAD BIOS DEFAULTS LOAD SETUP DEFAULTS PASSWORD SETTING IDE HDD AUTO DETECTION HDD LOW LEVEL FORMAT SAVE EXIT SETUP EXIT WITHOUT SAVING Esc Quit Select Item F10 Save Exit Set...

Page 45: ...2A4IBG32 STANDARD CMOS UTILITY AWARD SOFTWARE INC Date mm dd yy Fri Jan 20 1995 Time hh mm ss 12 46 31 HARD DISKS TYPE SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE Primary Master Auto 0 0 0 0 0 0 NORMAL Primary Slave None 0 0 0 0 0 0 Secondary Master None 0 0 0 0 0 0 Secondary Slave None 0 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 3328...

Page 46: ...Drive Disabled Boot Up Floppy Seek Enabled Boot Up Numlock Status On Boot Up System Speed High 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 ESC Quit Select Item F1 Help PU PD Modify F5 Old Values Shift F2 Col...

Page 47: ...oard Serial Port 2 COM2 Onboard Parallel Port 378H Onboard Parallel Mode EPP Onboard Game Port Enabled On Board PCI IDE Enabled 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 Cx486DX2 V66 CPU Note 1 the following table shows the settings for different CPU support System Clock Freq 25MHz 33MHz 40MHz CPU ...

Page 48: ...Disable COM Ports Activity Enable LPT Ports Activity Enable HDD Ports Activity Enable DMA Ports Activity Enable VGA Activity Enable IRQ 3 COM 2 Enable IRQ 4 COM 1 Enable IRQ 5 LPT 2 Enable IRQ 6 Floppy Disk Enable IRQ 7 LPT 1 Enable IRQ 8 RTC Alarm Disable IRQ 9 IRQ2 Redir Enable IRQ 10 Reserved Enable IRQ 11 Reserved Enable IRQ 12 PS 2 Mouse Enable IRQ 13 Coprocessor Enable IRQ 14 Hard Disk Enabl...

Page 49: ...T Ports Activity Enable HDD Ports Activity Enable DMA Ports Activity Enable VGA Activity Enable IRQ 3 COM 2 Enable IRQ 4 COM 1 Enable IRQ 5 LPT 2 Enable IRQ 6 Floppy Disk Enable IRQ 7 LPT 1 Enable IRQ 8 RTC Alarm Disable IRQ 9 IRQ2 Redir Enable IRQ 10 Reserved Enable IRQ 11 Reserved Enable IRQ 12 PS 2 Mouse Enable IRQ 13 Coprocessor Enable IRQ 14 Hard Disk Enable IRQ 15 Reserved Enable ESC Quit Se...

Page 50: ...lable IRQ 10 2nd Available IRQ 11 3rd Available IRQ 9 4th Available IRQ 12 PCI IRQ Actived By Level PCI IDE 2nd Channel Enable PCI IDE IRQ Map To PCI AUTO Primary IDE INT A Secondary IDE INT B CPU PCI MEM Post Write Buf Disable CPU PCI Memory Burst Write Disable PCI Master Burst Read Write Disable ESC Quit Select Item F1 Help PU PD Modify F5 Old Values Shift F2 Color F6 Load BIOS Defaults F7 Load ...

Page 51: ...e 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 passwo...

Page 52: ...E INC HARD DISKS TYPE SIZE CYLS HEADS PRECOMP LANDZ SECTOR MODE Primary Master Select Primary Master Option N Skip N OPTIONS SIZE CYLS HEADS PRECOMP LANDZONE SECTORS MODE 1 Y 81 903 4 65535 902 46 NORMAL ESC Skip Fig 14 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 ...

Page 53: ... TRACK LIST PREFORMAT Current select drive is C DRIVE C CYLINDER 0 HEAD 0 SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE Primary Master 270 944 14 65535 943 40 NORMAL Primary Slave 0 0 0 0 0 0 NORMAL Secondary Master 0 0 0 0 0 0 NORMAL Secondary Slave 0 0 0 0 0 0 NORMAL Up Down Select item ENTER Accept ESC Exit Abort Copyright c Award Software Inc 1992 94 All Rights Reserved Fig 15A Setup Screen shown w...

Page 54: ... track table DRIVE C CYLINDER 0 HEAD 0 SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE Primary Master 270 944 14 65535 943 40 NORMAL Primary Slave 0 0 0 0 0 0 NORMAL Secondary Master 0 0 0 0 0 0 NORMAL Secondary Slave 0 0 0 0 0 0 NORMAL Up Down Select item ENTER Accept ESC Exit Abort Copyright c Award Software Inc 1992 94 All Rights Reserved Fig 15B Setup Screen shown when BAD TRACK LIST option is select...

Page 55: ... 0 0 0 0 0 NORMAL Up Down Select item ENTER Accept ESC Exit Abort Copyright c Award Software Inc 1992 94 All Rights Reserved Fig 15C Setup Screen shown when PREFORMAT option is selected 4 4 11 SAVE EXIT SETUP MENU When you select this function the following message will appear at the center of the screen to assist you to Save data to CMOS and Exit the Setup SAVE to CMOS and EXIT Y N 4 4 12 EXIT WI...

Page 56: ...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...

Page 57: ...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...

Page 58: ...u 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 ...

Page 59: ... 732 22 30 306 5 17 300 733 Seagate ST4038 23 10 977 4 17 0 336 24 40 1024 5 17 None 976 Seagate ST4051 25 76 1224 9 17 None 1023 Seagate ST4096 26 71 1224 7 17 None 1223 Maxtor 2085 27 111 1224 11 17 None 1223 Maxtor 2140 Priam S14 28 152 1024 15 17 None 1223 Maxtor 2190 Priam S19 29 68 1024 8 17 None 1023 Maxtor 1085 Micropolis 1325 30 93 918 11 17 None 1023 Maxtor 1105 1120 4780 31 83 925 11 17...

Page 60: ... 2 3 4 3 4 JP17 OPEN OPEN 1 2 OPEN OPENOPEN OPEN JP4 OPEN OPEN OPEN OPEN OPENOPEN OPEN JP5 OPEN OPEN OPEN OPEN OPEN1 2 2 3 DX DX2 1 2 DX4 JP10 OPEN OPEN OPEN OPEN OPENOPEN OPEN Table 21a AMD486 INTEL CYRIX CYRIX UMC DX2 DX4 DX4 DX DX2 M1SC U5SX ENHANCE P24C JP6 1 2 1 2 1 2 1 2 2 3 JP7 1 2 1 2 2 3 1 2 OPEN JP8 2 3 2 3 2 3 1 2 2 3 JP9 2 3 2 3 1 2 2 3 OPEN JP11 OPEN OPEN OPEN 1 2 OPEN JP12 1 2 1 2 OP...

Page 61: ...Chapter 7 56 7 2 CPU SUPPLY VOLTAGE SELECTION CPU VOLT S4 S5 S6 5V 2 3 2 3 2 3 3 3V 1 2 OPEN OPEN 3 45V OPEN 1 2 OPEN 3 6V OPEN OPEN 1 2 4V OPEN OPEN OPEN Table 22 ...

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