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BIOS SETUP

44

MI812 User’s Manual

Frequency/Voltage Control

This section shows the user how to configure the processor frequency.

Phoenix - AwardBIOS CMOS Setup Utility

Frequency/Voltage Control

Auto Detect PCI Clk

Spreed Spectrum

Disabled
Disabled

ITEM HELP

CPU Host/SRC PCI Clock

Default

Auto Detect PCI Clk

This field enables or disables the auto detection of the PCI clock.

Spread Spectrum Modulated

This field sets the value of the spread spectrum. The default setting is

Disabled

. This field is for CE testing use only

.

CPU Host / SRC PCI Clock

This field is set to

Default

.

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Содержание MI812

Страница 1: ...MI812 Intel Atom 945GSE Mini ITX Motherboard USER S MANUAL Version 1 0 ...

Страница 2: ... of International Business Machines Corporation Intel and Atom are registered trademarks of Intel Corporation Microsoft Windows is a registered trademark of Microsoft Corporation Winbond is a registered trademark of Winbond Electronics Corporation All other product names or trademarks are properties of their respective owners ...

Страница 3: ...ng the Memory 7 Setting the Jumpers 8 Connectors on MI812 12 BIOS Setup 23 Drivers Installation 47 Intel Chipset Software Installation Utility 48 VGA Drivers Installation 50 Realtek High Definition Audio Driver Installation 52 LAN Drivers Installation 54 Appendix 56 A I O Port Address Map 56 B Interrupt Request Lines IRQ 57 C Watchdog Timer Configuration 58 ...

Страница 4: ...iv MI812 User s Manual This page is intentionally left blank ...

Страница 5: ... engine built into the chipset that is on the motherboard This integration provides incredible visual quality faster graphics performance and flexible display options without the need for a separate graphics card The main features of the MI812 Mini ITX Motherboard are Supports Intel Atom 270 processor with 1 6GHz speed Two DDRII SDRAM DIMM supports up to 2GB of DDR2 400 533MHz memory Onboard 10 10...

Страница 6: ...hecklist Your MI812 package should include the items listed below The MI812 Intel Atom Mini ITX motherboard This User s Manual 1 CD containing chipset drivers and flash memory utility Cable kit IDE 2x Serial port Serial ATA Parallel port ...

Страница 7: ... W83627EHG COM1 RS232 COM2 RS232 422 485 LPT port Hardware monitor 3 thermal inputs 4 voltage monitor inputs VID0 4 2 fan headers 2 nd LPC I O Fintek F81216DG COM3 COM4 RS232 Digital IO 4 in 4 out Keyboard Mouse Supports PS 2 Keyboard Mouse connectors Expansion Slots PCI slot x1 PCI E x1 slot x1 and Mini PCI E x1 socket x1 Power Connector DC power jack x1 for 12V 19V DC in Edge Connectors PS 2 con...

Страница 8: ...INTRODUCTION Board Dimensions 4 MI812 User s Manual ...

Страница 9: ...INTRODUCTION MI812 User s Manual 5 ...

Страница 10: ...ual Installations This section provides information on how to use the jumpers and connectors on the MI812 in order to set up a workable system The topics covered are Installing the Memory 7 Setting the Jumpers 8 Connectors on MI812 12 ...

Страница 11: ...ot on the board and perform the following steps 1 Hold the DDR2 module so that the key of the DDR2 module align with those on the memory slot 2 Gently push the DDR2 module in an upright position until the clips of the slot close to hold the DDR2 module in place when the DDR2 module touches the bottom of the slot 3 To remove the DDR2 module press the clips with both hands DDR2 Module Lock Lock Lock...

Страница 12: ...ubts about the best configuration for your needs The following lists the connectors on MI812 and their respective functions Jumper Locations on MI812 9 JP1 LCD Panel Power Selection 10 JP2 ATX AT Mode Select 10 JP3 JP4 JP5 RS232 422 485 COM2 Selection 10 JP6 COM4 RS232 5V 12V Power Setting 11 JP7 COM3 RS232 5V 12V Power Setting 11 JP8 Clear CMOS Setting 11 J15 CompactFlash Slave Master Selection 1...

Страница 13: ...LCD Panel Power Selection 10 JP2 ATX AT Mode Select 10 JP3 JP4 JP5 RS232 422 485 COM2 Selection 10 JP6 COM4 RS232 5V 12V Power Setting 11 JP7 COM3 RS232 5V 12V Power Setting 11 JP8 Clear CMOS Setting 11 J15 CompactFlash Slave Master Selection 11 MI812 User s Manual 9 ...

Страница 14: ...le describes the jumper settings for COM2 selection COM2 Function RS 232 RS 422 RS 485 Jumper Setting pin closed JP5 1 2 JP4 3 5 4 6 JP3 3 5 4 6 JP5 3 4 JP4 1 3 2 4 JP3 1 3 2 4 JP5 5 6 JP4 1 3 2 4 JP3 1 3 2 4 COM2 is jumper selectable for RS 232 RS 422 and RS 485 Pin Signal Name RS 232 R2 422 RS 485 11 DCD TX DATA 13 RX TX DATA 15 TX RX NC 17 DTR RX NC 19 Ground Ground Ground 12 DSR RTS NC 14 RTS ...

Страница 15: ... short 5V Pin 3 4 Standard COM Port JP7 COM3 RS232 5V 12V Power Setting Pin Signal Name JP6 Signal Name Pin 1 RI 12V 2 3 RI Default RI Default 4 5 RI 5V 6 COM3 Settings Pin 1 2 short 12V Pin 5 6 short 5V Pin 3 4 Standard COM Port JP8 Clear CMOS Setting JP8 Setting Normal Clear CMOS J15 CompactFlash Slave Master Selection J15 CF Setting Master Slave MI812 User s Manual 11 ...

Страница 16: ...5 and USB3 4 Ports 16 CN7 Audio Connector 16 CN8 CN9 Serial ATA Connectors 16 CN10 Mini PCI E x1 Connector bottom side 16 CN11 Compact Flash Connector bottom side 16 PCI1 PCI Slot supports 2 Master 16 PCIE_1 PCIE x1 Slot 16 IDE1 IDE Connector 17 J1 J4 LCD Backlight Connector 17 J2 HDD Power Connector Output Max 2A 17 J3 ATX_12V Connector 18 J5 Power LED Connector 18 J6 Digital I O 18 J7 COM1 COM2 ...

Страница 17: ...INSTALLATIONS Connector Locations on MI812 MI812 User s Manual 13 ...

Страница 18: ...INSTALLATIONS 14 MI812 User s Manual ...

Страница 19: ... for system fans The fan must be 12V Max 500mA Pin Signal Name 1 Ground 2 12V 3 Rotation detection CN1 DC Jack DC in 12V or 19V Remarks CN1 and J3 cannot be connected at the same time CN2 PS 2 Keyboard and PS 2 Mouse Connectors PS 2 Mouse PS 2 Keyboard Signal Name Keyboard Mouse Signal Name Keyboard data 1 1 Mouse data N C 2 2 N C GND 3 3 GND 5V 4 4 5V Keyboard clock 5 5 Mouse clock N C 6 6 N C MI...

Страница 20: ...C 11 12 DDCDATA HSYNC 13 14 VSYNC DDCCLK 15 CN4 USB5 6 Ports CN5 10 100 RJ 45 and USB1 2 Ports CN6 GbE RJ 45 and USB3 4 Ports CN7 Audio Connector CN8 CN9 Serial ATA Connectors CN10 Mini PCI E x1 Connector bottom side CN11 Compact Flash Connector bottom side PCI1 PCI Slot supports 2 Master PCIE_1 PCIE x1 Slot 16 MI812 User s Manual ...

Страница 21: ...otect pin DRQ0 21 22 Ground Host IOW 23 24 Ground Host IOR 25 26 Ground IOCHRDY 27 28 Host ALE DACK0 29 30 Ground IRQ14 31 32 No connect Address 1 33 34 No connect Address 0 35 36 Address 2 Chip select 0 37 38 Chip select 1 Activity 39 40 Ground J1 J4 LCD Backlight Connector Pin Signal Name 1 12V 2 Backlight Enable 3 Backlight ADJ 4 Ground Pin Signal Name 1 12V 2 Backlight ADJ 3 Ground J2 HDD Powe...

Страница 22: ... NC 3 PLED J6 Digital I O Signal Name Pin Pin Signal Name GND 1 2 VCC OUT3 3 4 OUT1 OUT2 5 6 OUT0 IN3 7 8 IN1 IN2 9 10 IN0 J7 COM1 COM2 Serial Ports Pin Signal Name RS 232 1 11 DCD Data carrier detect 3 13 RXD Receive data 5 15 TXD Transmit data 7 17 DTR Data terminal ready 9 19 Ground 2 12 DSR Data set ready 4 14 RTS Request to send 6 16 CTS Clear to send 8 18 RI Ring indicator 10 20 No Connect C...

Страница 23: ...XC 5V 3 3V 18 17 ENABKL 12V 20 19 12V J9 System Function Connector Signal Name Pin Pin Signal Name 5VDUAL 1 2 PS_ON 5V 3 4 HDD Active Ground 5 6 Reset ATX power on switch Pins 1 2 HDD LED Pins 3 4 Reset switch Pins 5 6 J11 COM3 COM4 Serial Ports Pin Signal Name RS 232 1 11 DCD Data carrier detect 3 13 RXD Receive data 5 15 TXD Transmit data 7 17 DTR Data terminal ready 9 19 Ground 2 12 DSR Data se...

Страница 24: ...ound D 2 6 D D 3 7 D Ground 4 8 Vcc J14 Audio Front Header Signal Name Pin Pin Signal Name MIC2_L 1 2 Ground MIC2_R 3 4 Presence Line2_R 5 6 MIC2_ID Sense 7 8 NC Line2_L 9 10 Line2_ID J16 SPI Debug Tools Port Factory use only J17 Smart Battery Connector Pin Signal Name 1 PCIRST 2 EMTSMI 3 Ground 4 SMBDATA 5 SMBCLK J18 SPDIF Out Connector Pin Signal Name 1 SPDIF out 2 Ground 20 MI812 User s Manual ...

Страница 25: ...9 Parallel Port Signal Name Pin Pin Signal Name STB 1 2 BUSY PD0 3 4 PE PD1 5 6 SLCT PD2 7 8 AFD PD3 9 10 ERR PD4 11 12 INIT PD5 13 14 SLIN PD6 15 16 Ground PD7 17 18 Ground ACK 19 20 Protect Pin MI812 User s Manual 21 ...

Страница 26: ...INSTALLATIONS 22 MI812 User s Manual This page is intentionally left blank ...

Страница 27: ...are as follows BIOS Introduction 24 BIOS Setup 24 Standard CMOS Setup 26 Advanced BIOS Features 29 Advanced Chipset Features 32 Integrated Peripherals 35 Power Management Setup 39 PNP PCI Configurations 42 PC Health Status 43 Frequency Voltage Control 44 Load Fail Safe Defaults 45 Load Optimized Defaults 45 Set Supervisor User Password 45 Save Exit Setup 45 Exit Without Saving 45 ...

Страница 28: ...S is immediately activated Pressing the Del key immediately allows you to enter the Setup utility If you are a little bit late pressing the Del key POST Power On Self Test will continue with its test routines thus preventing you from invoking the Setup If you still wish to enter Setup restart the system by pressing the Reset button or simultaneously pressing the Ctrl Alt and Delete keys You can al...

Страница 29: ...displays the control keys for this menu At the bottom of the Main Menu just below the control keys section there is another section which displays information on the currently highlighted item in the list Note If the system cannot boot after making and saving system changes with Setup the Award BIOS supports an override to the CMOS settings that resets your system to its default Warning It is stro...

Страница 30: ...mm ss 00 00 00 Menu Level IDE Channel 0 Master None Change the day month Year and century IDE Channel 0 Slave None IDE Channel 1 Master None IDE Channel 1 Slave None Video EGA VGA Halt On All Errors Base Memory 640K Extended Memory 514048K Total Memory 515072K At the bottom of the menu are the control keys for use on this menu If you need any help in each item field you can press the F1 key It wil...

Страница 31: ...lowing items Capacity Capacity size of the hard disk drive CYLS Number of cylinders HEAD Number of read write heads PRECOMP Write precompensation LANDING ZONE Landing zone SECTOR Number of sectors The Access Mode selections are as follows CHS HD 528MB LBA HD 528MB and supports Logical Block Addressing Large for MS DOS only Auto Remarks The main board supports two serial ATA ports and are represent...

Страница 32: ...s detected during power up No errors The system boot will not be halted for any error that may be detected All errors Whenever the BIOS detects a non fatal error the system will stop and you will be prompted All But Keyboard The system boot will not be halted for a keyboard error it will stop for all other errors ...

Страница 33: ... 4 OS Select For DRAM 64MB Non OS2 Small Logo EPA Show Disabled CPU Feature Press Enter to configure the settings relevant to CPU Feature Hard Disk Boot Priority With the field there is the option to choose aside from the hard disks connected Bootable add in Cards which refers to other external devices Virus Warning If this option is enabled an alarm message will be displayed when trying to write ...

Страница 34: ...st Second Third Boot Device Boot Up NumLock Status This allows you to activate the NumLock function after you power up the system Gate A20 Option This field allows you to select how Gate A20 is worked Gate A20 is a device used to address memory above 1 MB Typematic Rate Setting When disabled continually holding down a key on your keyboard will generate only one instance When enabled you can set th...

Страница 35: ...ng is Enabled MPS Version Control for OS This option is specifies the MPS Multiprocessor Specification version for your operating system MPS version 1 4 added extended configuration tables to improve support for multiple PCI bus configurations and improve future expandability The default setting is 1 4 OS Select for DRAM 64MB This option allows the system to access greater than 64MB of DRAM memory...

Страница 36: ...play CRT Panel Scaling Auto Panel Number 1024x768 18 bit SC DRAM Timing Selectable This option refers to the method by which the DRAM timing is selected The default is By SPD CAS Latency Time You can configure CAS latency time in HCLKs as 2 or 2 5 or 3 The system board designer should set the values in this field depending on the DRAM installed Do not change the values in this field unless you cha...

Страница 37: ...better video performance However if any program writes to this memory area a system error may result Memory Hole At 15M 16M In order to improve performance certain space in memory can be reserved for ISA cards This memory must be mapped into the memory space below 16 MB The choices are Enabled and Disabled On Chip VGA Setting The fields under the On Chip VGA Setting and their default settings are ...

Страница 38: ...D Panel type The default values for these ports are 640x480 18bit SC 800x480 18bit SC 800x600 18bit SC 1024x768 18bit SC 1280x1024 18bit DC 1280x768 18bit SC 1280x800 18bit SC 1400x1050 18bit DC 1400x900 18bit DC 1600x1200 18bit DC 1920x1200 18bit DC 1366x768 18bit SC 1920x1080 18bit DC ...

Страница 39: ...E Primary Master UDMA Auto IDE Primary Slave UDMA Auto On Chip Secondary PCI IDE Enabled IDE Secondary Master PIO Auto IDE Secondary Slave PIO Auto IDE Secondary Master UDMA Auto IDE Secondary Slave UDMA Auto On Chip Serial ATA Setting SATA Mode IDE On Chip Serial ATA Auto SATA Port Speed Settings Disabled PATA IDE Mode Primary SATA port P1 P3 is Secondary Phoenix AwardBIOS CMOS Setup Utility Onbo...

Страница 40: ...dary Master Slave PIO These fields allow your system hard disk controller to work faster Rather than have the BIOS issue a series of commands that transfer to or from the disk drive PIO Programmed Input Output allows the BIOS to communicate with the controller and CPU directly The system supports five modes numbered from 0 default to 4 which primarily differ in timing When Auto is selected the BIO...

Страница 41: ...ld is related to how the system is powered on such as with the use of conventional power button keyboard or hot keys The default is BUTTON ONLY KB Power ON Password This field allows users to set the password when keyboard power on is the mode of the Power ON function Hot Key Power ON This field sets certain keys also known as hot keys on the keyboard that can be used as a switch to power on the s...

Страница 42: ... function SPP Standard Printer Port EPP Enhanced Parallel Port ECP Extended Capabilities Port ECP EPP Combination of ECP and EPP capabilities Normal Normal function PWRON After PWR Fail This field sets the system power status whether on or off when power returns to the system from a power failure situation ...

Страница 43: ...d Date of Month Alarm 0 Time hh mm ss Alarm 0 0 0 Reload Global Timer Events Primary IDE 0 Disabled Primary IDE 1 Disabled Secondary IDE 0 Disabled Secondary IDE 1 Disabled FDD COM LPT Port Disabled PCI PIRQ A D Disabled ACPI Function ACPI stands for Advance Configuration and Power Interface ACPI Suspend The default setting of the ACPI Suspend mode is S1 POS RUN VGABIOS if S3 Resume The default se...

Страница 44: ...m inactivity all devices except the CPU will be shut off HDD Power Down When enabled and after the set time of system inactivity the hard disk drive will be powered down while all other devices remain active Soft Off by PWRBTN This field defines the power off mode when using an ATX power supply The Instant Off mode allows powering off immediately upon pressing the power button In the Delay 4 Sec m...

Страница 45: ... Timer Events The HDD FDD COM LPT Ports and PCI PIRQ are I O events that can prevent the system from entering a power saving mode or can awaken the system from such a mode When an I O device wants to gain the attention of the operating system it signals this by causing an IRQ to occur When the operating system is ready to respond to the request it interrupts itself and performs the service ...

Страница 46: ...ems Maximum Payload Size 128 Init Display First The default setting is PCI Card Reset Configuration Data This field allows you to determine whether to reset the configuration data or not The default value is Disabled Resources Controlled by This PnP BIOS can configure all of the boot and compatible devices with the use of a PnP operating system such as Windows 95 PCI VGA Palette Snoop Some non sta...

Страница 47: ...V VBAT V 3 21 V 3 3VSB V 3 26 V LCD Back Light Control 63 CPU Warning Temperature This field allows the user to set the temperature so that when the temperature is reached the system sounds a warning This function can help prevent damage to the system that is caused by overheating Temperatures Voltages These fields are the parameters of the hardware monitoring function feature of the motherboard T...

Страница 48: ...Control Auto Detect PCI Clk Spreed Spectrum Disabled Disabled ITEM HELP CPU Host SRC PCI Clock Default Auto Detect PCI Clk This field enables or disables the auto detection of the PCI clock Spread Spectrum Modulated This field sets the value of the spread spectrum The default setting is Disabled This field is for CE testing use only CPU Host SRC PCI Clock This field is set to Default ...

Страница 49: ...ssword message prompts on the screen Type the password up to eight characters in length and press Enter The system confirms your password by asking you to type it again After setting a password the screen automatically returns to the main screen To disable a password just press the Enter key when you are prompted to enter the password A message will confirm the password to be disabled Once the pas...

Страница 50: ...BIOS SETUP 46 MI812 User s Manual This page is intentionally left blank ...

Страница 51: ...ssing please contact the vendor where you made the purchase The contents of this section include the following Intel Chipset Software Installation Utility 48 VGA Drivers Installation 50 Realtek High Definition Audio Driver Installation 52 LAN Drivers Installation 54 IMPORTANT NOTE After installing your Windows operating system Windows 2000 XP you must install first the Intel Chipset Software Insta...

Страница 52: ... drivers to enable Plug Play INF support for Intel chipset components Follow the instructions below to complete the installation under Windows 2000 XP 1 Insert the CD that comes with the board Click Intel Chipsets and then Intel R I945GM GME GSE Chipset Drivers 2 Click Intel R Chipset Software Installation Utility 48 MI812 User s Manual ...

Страница 53: ...k Next to continue 4 Click Yes to accept the software license agreement and proceed with the installation process 5 In the Readme File Information window click Next to continue to proceed with the installation process 6 The utility setup is now complete Click Finish to restart the computer MI812 User s Manual 49 ...

Страница 54: ... Intel Chipsets and then Intel R I945GM GME GSE Chipset Drivers Then click Intel R I945GM GME GSE Chipset Family Graphics Driver 2 When the Welcome screen to the Setup Program appears click Next to continue 3 Click Yes to to agree with the license agreement and continue the installation process 4 On Readme File Information screen click Next to continue 50 MI812 User s Manual ...

Страница 55: ...DRIVERS INSTALLATION 5 In the Setup Progress screen click Next to continue the installation 6 Setup is now complete Click Finish to restart the computer MI812 User s Manual 51 ...

Страница 56: ...n Intel R I945GM GME GSE Chipset Drivers Click Realtek Audio Driver 2 Click Realtek Audio Driver and then Realtek High Definition Codec Audio Driver 3 When the Welcome to the InstallShield Wizard to Realtek High Definition Audio Driver screen appears click Next to continue 4 Setup has finished installing Realtek High Definition Audio Driver on your computer Click Finish to restart the computer 52 ...

Страница 57: ...DRIVERS INSTALLATION MI812 User s Manual 53 ...

Страница 58: ...tion Follow the steps below to install the Intel 82574L LAN Drivers 1 Insert the CD that comes with the board Click LAN Card and then Intel R PRO 82574L LAN Drivers 2 In the next screen click Install Drivers and Software 54 MI812 User s Manual ...

Страница 59: ...nt screen click Next to accept the terms in the license agreement 5 In the Setup Options screen click the checkbox of Drivers to select it and then click Next 6 In the Ready to Install the Program screen click Install to begin installation of the drivers 7 When the InstallShield Wizard has been completed click Finish MI812 User s Manual 55 ...

Страница 60: ...05Fh Timer 060h 06Fh Keyboard Controller 070h 07Fh Real Time Clock NMI 080h 09Fh DMA Page Register 0A0h 0BFh Interrupt Controller 2 0C0h 0DFh DMA Controller 2 0F0h Clear Math Coprocessor Busy Signal 0F1h Reset Math Coprocessor 1F0h 1F7h IDE Interface 278 27F Parallel Port 2 LPT2 2F8h 2FFh Serial Port 2 COM2 2B0 2DF Graphics adapter Controller 378h 3FFh Parallel Port 1 LPT1 360 36F Network Ports 3B...

Страница 61: ...ng table shows the IRQ used by the devices on board Level Function IRQ0 System Timer Output IRQ1 Keyboard IRQ2 Interrupt Cascade IRQ3 Serial Port 2 IRQ4 Serial Port 1 IRQ5 Reserved IRQ6 Floppy Disk Controller IRQ7 Parallel Port 1 IRQ8 Real Time Clock IRQ9 Reserved IRQ10 Reserved IRQ11 Reserved IRQ12 PS 2 Mouse IRQ13 80287 IRQ14 Primary IDE IRQ15 Secondary IDE ...

Страница 62: ...MPLE CODE THIS CODE AND INFORMATION IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND OR FITNESS FOR A PARTICULAR PURPOSE include stdio h include stdlib h include W627EHF H int main int argc char argv void copyright void void EnableWDT int void DisableWDT void int main int argc char argv unsigned ch...

Страница 63: ...igned char bBuf bBuf Get_W627EHF_Reg 0x2D bBuf 0x01 Set_W627EHF_Reg 0x2D bBuf Enable WDTO Set_W627EHF_LD 0x08 switch to logic device 8 Set_W627EHF_Reg 0x30 0x01 enable timer bBuf Get_W627EHF_Reg 0xF5 bBuf 0x08 Set_W627EHF_Reg 0xF5 bBuf count mode is second Set_W627EHF_Reg 0xF6 interval set timer void DisableWDT void Set_W627EHF_LD 0x08 switch to logic device 8 Set_W627EHF_Reg 0xF6 0x00 clear watch...

Страница 64: ...result unsigned char ucDid W627EHF_BASE 0x2E result W627EHF_BASE ucDid Get_W627EHF_Reg 0x20 if ucDid 0x88 goto Init_Finish W627EHF_BASE 0x4E result W627EHF_BASE ucDid Get_W627EHF_Reg 0x20 if ucDid 0x88 goto Init_Finish W627EHF_BASE 0x00 result W627EHF_BASE Init_Finish return result void Unlock_W627EHF void outportb W627EHF_INDEX_PORT W627EHF_UNLOCK outportb W627EHF_INDEX_PORT W627EHF_UNLOCK void L...

Страница 65: ... INFORMATION IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND OR FITNESS FOR A PARTICULAR PURPOSE ifndef __W627EHF_H define __W627EHF_H 1 define W627EHF_INDEX_PORT W627EHF_BASE define W627EHF_DATA_PORT W627EHF_BASE 1 define W627EHF_REG_LD 0x07 define W627EHF_UNLOCK 0x87 define W627EHF_LOCK 0xAA uns...

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