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2-17

Chapter 2: Installation

PS/2 Mouse Header

The PS/2 Mouse header is located on JP25. See Table 2-15 for pin
definitions.

Table 2-15. PS/2 Mouse Pin Definitions

Pin

Number Function

Number Function

2 NC

4 CLK

6 VCC

Data

8 NC

GND

Serial Ports

Serial port COM1 is located on J20 and serial port COM2 is located
on J21. See Table 2-16 for pin definitions.

Table 2-16. Serial Port Pin Definitions

Pin

Number Function

Number Function

DCD

6 CTS

DSR

7 DTR

Serial In

8 RI

RTS

9 GND

Serial Out

Содержание SUPER P6DGH

Страница 1: ...SUPER P6DGH USER S AND BIOS MANUAL Revision 1 0 SUPER...

Страница 2: ...WILL SUPERMICRO COMPUTER BE LIABLE FOR DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO USE THIS PRODUCT OR DOCUMENTATION EVEN IF ADVISED OF THE POSSIBI...

Страница 3: ...on Chapter 1 Introduction describes the features specifications and performance of the SUPER P6DGH system board provides detailed information about the chipset and offers warranty information Refer to...

Страница 4: ...setup configuration stored in memory Instruc tions are also included for contacting a technical assistance sup port representative returning merchandise for service and visiting our website for BIOS...

Страница 5: ...1 8 1 3 ACPI PC 98 Features 1 11 1 4 Chipset Overview 1 12 1 5 Wake On LAN 1 13 1 6 Power Supply 1 13 1 7 Winbond Super I O Controller 1 14 1 8 AIC 7896 SCSI Controller 1 15 1 9 Warranty Technical Sup...

Страница 6: ...16 Universal Serial Bus 2 16 PS 2 Mouse Header 2 17 Serial Ports 2 17 Power On Off State 2 18 CMOS Clear 2 18 Overheat LED 2 19 Buzzer Overheat Notification 2 19 Chassis Intrusion Connector 2 19 Wake...

Страница 7: ...Interface 2 34 ULTRA II LVD SCSI Interfaces 2 35 Wide SCSI Interface 2 36 Chapter 3 Troubleshooting 3 1 Troubleshooting Procedures 3 1 Before Power On 3 1 Troubleshooting Flowchart 3 1 No Power 3 2 No...

Страница 8: ...7 Power Management 5 13 PCI PnP Setup 5 15 Peripheral Setup 5 18 5 2 Security Setup 5 21 5 3 Utility Setup 5 22 Anti Virus 5 22 Language 5 22 5 4 Default Settings 5 22 Optimal Default 5 22 Fail Safe D...

Страница 9: ...ode 2 21 JP917 i960 Jumper 2 21 JP918 i960 Reset Mode 2 21 JP919 i960 Retry Mode 2 21 JP920 i960 Disable Mode 2 21 JP921 i960 BIST Mode 2 21 JP924 i960 Jumper 2 21 Connector Function Page AGP AGP Port...

Страница 10: ...s Intrusion 2 18 JOH1 Overheat LED 2 18 JP20 JP21 COM 1 COM 2 2 16 JP25 PS 2 Mouse Header 2 16 JT1 JT2 CPU1 CPU2 Fans 2 19 JT3 Thermal Overheat Fan 2 19 PW1 Main AT Power Connector 2 10 PW2 Main ATX P...

Страница 11: ...the CPU and I O devices by broad ening the bandwidth of graphics to memory It delivers a maximum of 532 MB s 2x transfer mode which is quadruple the PCI speed The I2 O architecture of the SUPER P6DGH...

Страница 12: ...e I O function The onboard PCI to PCI bridge enables designers to connect I O components directly to the PCI bus and to also add additional PCI slots The bridge improves overall system performance by...

Страница 13: ...on Utility for Windows 95 a BIOS Flash Upgrade Utility a DMI Browser for Windows 95 98 a DMI Wizard the SUPERMICRO SU PER Doctor Utility ver 1 31a and Intel s LANDesk Client Manager for Windows NT and...

Страница 14: ...1 4 SUPER P6DGH User s Manual SUPER P6DGH Figure 1 1 SUPER P6DGH Motherboard Image...

Страница 15: ...BIOS 1 JP20 JP25 PS 2 MOUSE 1 1 1 USB J17 J18 SBLINK PW_ON JP11 JA5 J2 JP917 JP921 JP920 JP919 JP918 JP915 JA4 JB2 JB3 JB4 1 PCI 1 CMOS Clear J74 AT KB J36 Bank0 Bank1 Bank2 Bank3 JB1 SPEAKER KEY LOC...

Страница 16: ...Chipset Intel 440GX Expansion Slots 9 PCI slots 2 ISA slots 1 AGP slot BIOS 2 MB AMI Flash BIOS DMI 2 0 Plug and Play PnP PC Health Monitoring 781D Seven onboard voltage monitors for CPU cores 3 3V 5...

Страница 17: ...ne 50 pin 8 bit Ultra SCSI connector RAIDport for Adaptec ARO 1130CA2 RAIDport III card Two EIDE Bus Master interfaces that support Ultra DMA 33 and Mode 4 One floppy interface Two UART 16550A serial...

Страница 18: ...PC health monitor can check the RPM status of the cooling fans The onboard 3 pin CPU fans are controlled by the ACPI BIOS and the ACPI enabled operating system The thermal fan is con trolled by the o...

Страница 19: ...gram can also give an on screen indication when the system overheats Chassis Intrusion Detection The chassis intrusion circuitry can detect unauthorized intrusion to the system The chassis intrusion c...

Страница 20: ...V to 3 5V This will allow the regulator to run cooler and thus make the system more stable Intel LANDesk Client Manager LDCM Support As the computer industry grows PC systems have become more complex...

Страница 21: ...age ment ACPI provides a generic system event mechanism for Plug and Play and an operating system independent interface for con figuration control ACPI leverages the Plug and Play BIOS data structures...

Страница 22: ...ter a SoftOff state The monitor will be suspended and the hard drive will spin down Pressing the power button again will cause the whole system to wake up During the SoftOff state the ATX power supply...

Страница 23: ...t 33 MHz This interface implementation is com pliant with the PCI Rev 2 1 Specification The AGP interface is based on AGP Specification Rev 1 0 It can support up to 133 MHz 532 MB s data transfer rate...

Страница 24: ...ed power distribution 1 7 Winbond Super I O Controller The disk drive adapter functions of the Super I O chip include a floppy disk drive controller that is compatible with industry standard 82077 765...

Страница 25: ...e of 80 MB s Connectors include two 68 pin 16 bit Ultra Wide SCSI connectors JA1 and JA2 and one 50 pin 8 bit Ultra SCSI connector JA3 The AIC 7896 Ultra II SCSI chip con nects to a 32 bit PCI bus You...

Страница 26: ...per Micro Computer Inc warrants its products to be free from defects in material and workmanship The warranty period is for two years 24 months beginning from the original purchase date Super Micro sh...

Страница 27: ...S This warranty is in lieu of any other warranty expressed or implied In no event will Super Micro be held liable for incidental or conse quential damages such as loss of revenue or loss of business a...

Страница 28: ...tion mechanism attachment mount under the motherboard Do this before mounting the motherboard in the chassis Do not screw it too tight Mount the two black plastic pegs on the motherboard Figure 2 1 Th...

Страница 29: ...utside edge of the support If the supports are reversed the holes will not line up with the pegs on the motherboard Slide each support toward the center of the processor until the support is seated in...

Страница 30: ...at the fan shroud is facing toward the pegs on the motherboard Slide the processor C into the reten tion mechanism and slide the supports onto the pegs Ensure that the pegs on the motherboard slide in...

Страница 31: ...ing the clip forward Push the latches on the processor B outward until they click into place in the retention mechanism The latches must be secured for the proper electrical connection of the processo...

Страница 32: ...Installing the URM be sure the Left L and the Right R sides are placed accordingly 2 Lift both arms upright and slide the processor into the socket noting that the notches need to line up These direc...

Страница 33: ...2 6 SUPER P6DGH User s Manual Figure 2 6 Installing a Slot 1 Processor...

Страница 34: ...il it is freed from Slot 1 Lift the other end of the processor until it is freed from Slot 1 Lift the entire processor with the fan heat sink supports still attached until it is free from the retentio...

Страница 35: ...stem board and peripherals back into their antistatic bags when not in use For grounding purposes be sure your computer system s chassis allows for excellent conductive contact between its power suppl...

Страница 36: ...PU Speed Bus Frequency CPU Core Bus Ratio 266 MHz 4 0 66 MHz Table 2 1 Pentium II Speed Selection CPU Core JB1 JB2 JB3 JB4 Bus Ratio 3 0 ON OFF ON ON 3 5 OFF OFF ON ON 4 0 ON ON OFF ON 4 5 OFF ON OFF...

Страница 37: ...r settings on page 2 23 AT Power Attach the power supply cables to PW1 Do not force the cables but make sure they are fully seated The two black wires on each power connector for PW1 will sit next to...

Страница 38: ...ire to be connected 6 Ground Black wire to be connected 7 Ground Black wire to be connected 8 Ground Black wire to be connected 9 5 VCC 10 5 VCC 11 5 VCC 12 5 VCC Table 2 4 Secondary AT Power Connecto...

Страница 39: ...Function Number Function PW2 1 3 3V 11 3 3V ATX 2 3 3V 12 12V Power 3 COM 13 COM 4 5V 14 PS ON 5 COM 15 COM 6 5V 16 COM 7 COM 17 COM 8 PW OK 18 5V 9 5VSB 19 5V 10 12V 20 5V Table 2 6 Secondary ATX Pow...

Страница 40: ...he 4 second feature you need to enable the Power Management APM in the BIOS and set the Power Button Function to Suspend See Table 2 7 for pin definitions Table 2 7 PW_ON Connector Pin Definitions Pin...

Страница 41: ...in Definitions Pin Number Definition 12 Ground 13 Reset Keylock Power LED Connector The keylock power LED connector is located on pins 5 to 9 of JF1 See Table 2 10 for pin definitions Pins 5 and 7 are...

Страница 42: ...tions Table 2 11 Hard Drive LED Pin Definitions Pin Number Definition 1 5V 2 HD Active 3 HD Active 4 5V Speaker Connector The speaker connector is located on pins 10 to 13 of JF1 See Table 2 12 for p...

Страница 43: ...ard Connector Pin Definitions Pin Number Function 1 Keyboard clock 2 Keyboard data 3 Spare 4 Ground 5 5 VDC Universal Serial Bus The Universal Serial Bus is located on J17 and J18 See Table 2 14 for p...

Страница 44: ...s Pin Pin Number Function Number Function 1 NC 2 NC 3 NC 4 CLK 5 NC 6 VCC 7 Data 8 NC 9 GND Serial Ports Serial port COM1 is located on J20 and serial port COM2 is located on J21 See Table 2 16 for pi...

Страница 45: ...y power to the system or when the system comes back from an AC power failure When set to 2 3 the system will remain off when AC power returns Table 2 17 Power On Off State Pin Definitions Connector Ju...

Страница 46: ...ble 2 20 for setting BZ_ON to either enable or disable buzzer BZ1 as an overheat warning Table 2 20 Buzzer Enable Jumper Settings Jumper Position Function ON Enable Buzzer OFF Disable Buzzer Chassis I...

Страница 47: ...pecification 2 01 for the WOL function to work Table 2 22 Wake on LAN Pin Definitions Pin Number Function 1 5V Standby 2 Ground 3 Wake up Fan Connectors The CPU fans are located on JT1 JT2 and JT3 The...

Страница 48: ...n Pin Number Function Number Function 1 CD 6 DSR 2 TXD 7 CTS 3 RXD 8 RTS 4 DTR 9 N C 5 GND i960 Fail LED Indicator ID4 is used to determine whether Mode 3 of the i960 RD IO proces sor is functioning p...

Страница 49: ...PCI PCI bridge Table 2 26 i960 Mode Settings Jumper Mode 3 Mode 0 default JP915 OFF OFF JP918 OFF ON JP919 OFF ON JP920 OFF OFF JP921 ON ON i960 Jumper Settings Refer to Table 2 27 for more jumper set...

Страница 50: ...or pin definitions Table 2 28 I2 C Pin Definitions SLED SCSI LED Indicator The SLED connector is used to provide an LED indication of SCSI activity Refer to Table 2 29 for connecting the SCSI LED Tabl...

Страница 51: ...e settings See page 2 10 for connecting power cables The default setting is for AT power mode See precautions below Table 2 30 JATPWR and JP100 Jumper Settings Mode JATPWR JP100 ATX AT Note For heavy...

Страница 52: ...he results of installing jumpers at these locations Table 2 31 SCSI Termination Jumper Settings JA7 On Enables termination of high bytes on JA2 Off No termination of high bytes on JA2 JA6 On Enables t...

Страница 53: ...unction Pin Function Number Number SBLINK Connector The SBLINK connector is included for audio cards residing in a PCI slot when used with a serial IRQ See the website of Creative Labs at www soundbla...

Страница 54: ...x4 x8 and x16 If you are using the x4 type you can populate the DIMM slots with either 4 single sided or 2 double sided memory mod ules For memory configurations of 512 MB EDO DIMMs or higher it is r...

Страница 55: ...down until it snaps into place Pay attention to the two notches To Remove Use your thumb to gently push the edge of the socket and release the module Do this on both sides for each module Note Notches...

Страница 56: ...socket 3 Insert each SIMM module into its socket at an angle Gently press the SIMM module until it snaps upright into place in the socket Removing DIMM Modules 1 Remove DIMM modules in any order 2 Ge...

Страница 57: ...ard disk drive requires a SCSI ribbon cable with 68 wires A single IDE hard disk drive cable has two connectors to provide for two drives To select an IDE disk drive as C you would nor mally set the d...

Страница 58: ...t 3 10 GND 11 Data Bit 4 12 GND 13 Data Bit 5 14 GND 15 Data Bit 6 16 GND 17 Data Bit 7 18 GND 19 ACJ 20 GND 21 BUSY 22 GND 23 PE 24 GND 25 SLCT Pin Pin Number Function Number Function Parallel Port C...

Страница 59: ...Number Function Number Function 1 GND 2 FDHDIN 3 GND 4 Reserved 5 Key 6 FDEDIN 7 GND 8 Index 9 GND 10 Motor Enable 11 GND 12 Drive Select B 13 GND 14 Drive Select A 15 GND 16 Motor Enable 17 GND 18 D...

Страница 60: ...D 3 Host Data 7 4 Host Data 8 5 Host Data 6 6 Host Data 9 7 Host Data 5 8 Host Data 10 9 Host Data 4 10 Host Data 11 11 Host Data 3 12 Host Data 12 13 Host Data 2 14 Host Data 13 15 Host Data 1 16 Hos...

Страница 61: ...ND SBA4 SBA6 KEY KEY KEY KEY AD31 AD29 VCC3 3 AD27 AD25 GND AD_STB1 AD23 A 12V Spare Reserved USB GND INTA RST GNT VCC3 3 ST1 Reserved PIPE GND Spare SBA1 VCC3 3 SBA3 Reserved GND SBA5 SBA7 KEY KEY KE...

Страница 62: ...TERMPWR RESERVED GROUND ATN GROUND BSY ACK RST MSG SEL C D REQ I O DB 8 DB 9 DB 10 DB 11 Connector Contact Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32...

Страница 63: ...GND 20 GND 21 GND 22 GND 23 GND 24 GND 25 GND Pin Number Function 26 DB 0 27 DB 1 28 DB 2 29 DB 3 30 DB 4 31 DB 5 32 DB 6 33 DB 7 34 DB P 35 GND 36 GND 37 Reserved 38 Termpwr 39 Reserved 40 GND 41 ATN...

Страница 64: ...cards except the video graphics card Be sure the video graphic card is inserted properly 4 Install the CPU a chassis speaker and a power LED to the motherboard Check all the jumper settings as well 5...

Страница 65: ...connections especially under the motherboard 3 Check the jumpers settings clock speed and voltage settings 4 Use the speaker to determine if any beep codes exist Refer to Appendix A for details about...

Страница 66: ...ufacturer Super Micro does not sell directly to end users so it is best to check with your distributor or reseller for troubleshooting services They should know of any possible problem s with the spec...

Страница 67: ...able the ECC function 2 Registered SDRAM and unbuffered SDRAM cannot be mixed 3 Mixing PC 100 DIMMs and PC 66 DIMMs will result in an unex pected memory count or system errors 4 The user should popula...

Страница 68: ...drive A Press and hold CTRL and Home at the same time then turn on the power with these keys pressed until your floppy drive starts reading Your screen will remain blank until the BIOS program is don...

Страница 69: ...lities as long as the BIOS has control of the sys tem When this feature is disabled or when the BIOS is not in control such as during the memory count the first screen that ap pears when the system is...

Страница 70: ...nty service will be rendered You can obtain service by calling your vendor for a Returned Merchandise Authorization RMA number When returning to the manufacturer the RMA number should be prominently d...

Страница 71: ...mation when the com puter is turned off The original IBM AT had 64 bytes of nonvolatile memory storage in CMOS RAM All AT compatible systems have at least 64 bytes of CMOS RAM which is usually part of...

Страница 72: ...rts the LS120 drive made by Matsushita Kotobuki Electronics Industries Ltd The LS120 can be used as a boot de vice and is accessible as the next available floppy drive AMIBIOS supports PC Health Monit...

Страница 73: ...PCI Onboard SCSI IRQ 10 PCI Onboard SCSI IRQ 10 PCI Slot 4 VGA IRQ 11 AMIBIOS Setup See the following page for examples of the AMIBIOS Setup screen featuring options and settings Figure 4 1 shows the...

Страница 74: ...BIOS User s Manual 4 4 Figure 4 1 Setup Option Highlighted Figure 4 2 Settings for Standard Option...

Страница 75: ...Select Auto Detect IDE to let AMIBIOS automatically configure the drive A screen with a list of drive parameters then appears Click on OK to configure the drive Type How to Configure SCSI Select Type...

Страница 76: ...of cylinders in the disk drive Heads The number of heads Write The size of sectors get progressively smaller as the track Precompensation diameter diminishes Yet each sector must still hold 512 bytes...

Страница 77: ...option replaces the old Above 1 MB Memory Test Advanced Setup option The settings are Setting Description Disabled AMIBIOS tests all system memory AMIBIOS waits for up to 40 seconds for a READY signa...

Страница 78: ...so on For example if the system has a hard disk connected to the Primary Slave and another hard disk connected to the Secondary Master then the 1st IDE HDD will be referred to as the hard disk connec...

Страница 79: ...in unchanged even if this setup question is selected as Force BIOS If selected as Keep Current then the current display mode will remain unchanged Floppy Access Control The settings for this option ar...

Страница 80: ...able When set to Enabled the contents of the F0000h system memory segment can be read from or written to cache memory The contents of this memory segment are always copied from the BIOS ROM to system...

Страница 81: ...ROM area from C0000h C7FFFh are copied from ROM to RAM and can be written to or read from cache memory Chipset Setup USB Function The settings for this option are Enabled or Disabled Set this option...

Страница 82: ...indicate that all the snoop activity on the CPU bus on behalf of the last PCI DRAM write transaction is complete and that it is safe to send the APIC interrupt message The settings for this option ar...

Страница 83: ...is done EC Multibit errors are detected and reported as parity errors Single bit errors are corrected by the chipset Corrected bits of data from memory are not written back to DRAM system memory ECC M...

Страница 84: ...ccess cycle if SDRAM is installed The settings are Auto AMIBIOS automatically determines the optimal delay 2 SCLKs or 3 SCLKs Note The Optimal default setting is Auto and the Fail Safe default setting...

Страница 85: ...s Since the monochrome adapter may be on the PCI or ISA bus the GX must decode cycles in the MDA range and forward them to PCI The settings for this option are Yes or No Set this option to Yes to let...

Страница 86: ...X releases the USB bus when idle to maximize USB bus usage The settings for this option are Enabled or Disabled Set this option to Enabled to enable passive release for USB PIIX4 Passive Release This...

Страница 87: ...power button mounted externally on the computer chassis is to be used The settings are Suspend or On Off When set to On Off pushing the power button turns the computer on or off When set to Suspend pu...

Страница 88: ...nd suspend timeout timer unit The settings are 32 secs 4 msecs 4 min or 4 secs Standby Timeout This option specifies the length of a period of system inactivity while in the full power on state When t...

Страница 89: ...s on the specified IRQ line Note The Optimal default setting for each option is Ignore with the exception of Devices 0 Primary Master IDE and 6 Serial Port 1 which should be set to Monitor The Fail Sa...

Страница 90: ...Enabled if any ISA adapter card installed in the system requires VGA palette snooping PCI IDE Busmaster The settings for this option are Disabled or Enabled Set to Enabled to specify that the IDE Cont...

Страница 91: ...iority order DMA Channel 0 DMA Channel 1 DMA Channel 3 DMA Channel 5 DMA Channel 6 DMA Channel 7 These DMA channels control the data transfer between the I O devices and the system memory The chipset...

Страница 92: ...gacy ISA adapter cards The settings are C0000 C4000 C8000 CC000 D0000 D4000 D8000 or DC000 PCI Device Search Order This option specifies the direction the PCI buses will be scanned The settings are Fi...

Страница 93: ...Monitoring Motherboards with W83781D have seven onboard voltage monitors for the CPU core the CPU I O 3 3V 5V 5V 12V and 12V and three fan status monitors Onboard FDC This option enables the FDC Flop...

Страница 94: ...ies the parallel port mode The settings are Normal Bi Dir EPP or ECP When set to Normal the normal parallel port mode is used Use Bi Dir to support bidirectional transfers Use EPP Enhanced Parallel Po...

Страница 95: ...If you do not want to use a password just press Enter when the password prompt appears The password check option is enabled in the Advanced Setup by choosing either Always or Setup The password is sto...

Страница 96: ...t settings for this option are English 5 4 Default Settings Every option in the WinBIOS Setup contains two default settings a Fail Safe default and an Optimal default Optimal Default The Optimal defau...

Страница 97: ...Chapter 5 Running Setup 5 23 Notes...

Страница 98: ...on the screen Fatal errors are those which will not allow the system to continue the boot up procedure If a fatal error occurs you should consult with your system manufacturer for possible repairs Th...

Страница 99: ...r 6 8042 Gate A20 Failure The keyboard controller 8042 contains the Gate A20 switch which allows the CPU to operate in virtual mode This error means that the BIOS cannot switch the CPU into protected...

Страница 100: ...t still beeps replace the keyboard controller If it still beeps try a different keyboard or replace the keyboard fuse if the keyboard has one 8 times there is a memory error on the video adapter Repla...

Страница 101: ...Timer Error Most ISA computers include two times There is an error in time 2 CMOS Battery State Low CMOS RAM is powered by a battery The battery power is low Replace the battery CMOS Checksum Failure...

Страница 102: ...ollow the screen instructions Display Switch Some computers require a video switch on the Not Proper motherboard be set to either color or monochrome Turn the computer off set the switch then power on...

Страница 103: ...No ROM BASIC Cannot find a bootable sector on either disk drive A or hard disk drive C The BIOS calls INT 18h which generates this message Use a bootable disk Off Board Parity error in memory installe...

Страница 104: ...ing cache memory 06 Uncompressing the post code unit next 07 Next initializing the CPU init and the CPU data area 08 The CMOS checksum calculation is done next 0B Next performing any required initiali...

Страница 105: ...he 8254 timer test will begin next 19 The 8254 timer test is over Starting the memory refresh test next 1A The memory refresh test line is toggling Checking the 15 second on off time next 23 Reading t...

Страница 106: ...ntrol to BIOS POST Performing any required processing after the video ROM had control 2E Completed post video ROM test processing If the EGA VGA controller is not found performing the display memory r...

Страница 107: ...0 0 next 45 Data initialized Checking for memory wraparound at 0 0 and finding the total system memory size next 46 The memory wraparound test has completed The memory size calculation has been compl...

Страница 108: ...djusting the displayed memory size for relocation and shadowing next 51 The memory size display was adjusted for relocation and shadowing Testing the memory above 1 MB next 52 The memory above 1 MB ha...

Страница 109: ...he output buffer and checking for stuck keys Issuing the keyboard reset command next 81 A keyboard reset error or stuck key was found Issuing the keyboard controller interface test command next 82 The...

Страница 110: ...mouse check and extended BIOS data area allocation check next 8C Programming the WINBIOS Setup options next 8D The WINBIOS Setup options are programmed Resetting the hard disk controller next 8F The...

Страница 111: ...on after the coprocessor test next 9E Initialization after the coprocessor test is complete Checking the extended keyboard keyboard ID and Num Lock key next Issuing the keyboard ID command next A2 Dis...

Страница 112: ...B1 Copying any code to specific areas D0h The NMI is disabled Power on delay is starting Next the initialization cade checksum will be verified D1h Initializing the DMA controller Performing the keybo...

Страница 113: ...BIOS User s Manual B 10 If either Ctrl Home was pressed or the system BIOS checksum is bad the system will next go to checkpoint code E0h Otherwise it will go to checkpoint code D7h...

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