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AMI
System BIOS
__________________________________

A-13

Numeric Processor :

These options allow the user to mark the 80387SX Math coprocessor as

present or absent.

Floppy Drive Seek At Boot :

The default for this option is "Enabled". If disabled, it allows a fast boot.

System Boot Up Sequence :

This option allows you to choose which drive the system will boot from

first.    The  default  setting  is  `A:,  C:'.    It  allows  you  to  boot  from
device  A  if  necessary.    However,  it  will  directly  boot  from  hard
disk  when  selecting  `C:,  A:'.    The  BIOS  will  not  read  the  floppy
disk A unless there is no drive C: installed.    Thus it takes less time
for boot up.

Video, Adapter and System ROM shadow

There are two options of shadow RAM for video adapter, ten options of

shadow RAM for add-on card  and one for the system BIOS.    For
the  option  System  ROM,  the  content  of  the  system  at  F000H
segment  BIOS  is copied to the  on board memory.    For the option
Video  ROM,  the  video  ROM  at  C0000H  segment  or  C4000H
segment are copied to memory.

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Summary of Contents for Panther II

Page 1: ...P A N T H E R I I ...

Page 2: ...for information only and is subject to change without notice REVISION 1 0 IBM IBM PC XT AT PC DOS MS DOS OS 2 UNIX XENIX MR BIOS AMI BIOS INTEL 386SX 386 and 286 ARE THE TRADEMARKS OR REGISTERED TRADEMARKS OF THEIR RESPECTIVE OWNERS ...

Page 3: ...the receiver Move the computer away from the receiver Plug the power cord of computer into a different outlet so that computer and receiver are on different branch circuits Ensure that card slot covers are in place when no card is installed Ensure that card mounting screws attachment connector screws and ground wires are tightly secured If peripherals are used with this system it is suggested to u...

Page 4: ... Setup unless you are so sure that the I O cards installed are capable of running at such high speed Refer to A 16 for details 2 Electronic components are sensitive to dust and dirt Do inspect and clean the computer system regularly 3 Turn off the power whenever you install or remove any connector memory module and add on card Before turning on the power make sure that all the connectors memory mo...

Page 5: ...neers The manual compose of 4 chapters Chapter 1 contains a brief introduction of Panther II motherboard In Chapter 2 specifications and functions of Panther II are discussed It also outlines many advanced features of the CPU and the system architecture Chapter 3 deals with the installation of coprocessor DRAM modules jumpers and the memory configurations Technical information is provided in Chapt...

Page 6: ...cessor 2 3 Math Coprocessor 2 6 Memory System 2 8 I O Subsystem 2 11 System Functions 2 12 Chapter 3 INSTALLING COMPONENTS 3 1 Installing 80387SX Math Coprocessor 3 1 System Memory Configuration 3 3 Control of System Speed 3 8 System Board Jumper Setting 3 10 System Board Connectors 3 11 ...

Page 7: ... 4 7 Real Time Clock and CMOS RAM 4 9 CMOS RAM Address Map 4 10 Real Time Clock Information 4 11 System Expansion Bus 4 12 APPENDIX A SYSTEM BIOS A 1 Self Test A 1 System Setup A 4 APPENDIX B OPERATION MAINTENANCE B 1 Keeping the System Cool B 2 Cleaning the Golden Finger B 2 Cleaning the Motherboard B 3 APPENDIX C SYSTEM BOARD LAYOUT C 1 ...

Page 8: ......

Page 9: ...It combines the abilities of the 80386 and the 80286 machines Like an 80386 machine it processes instructions internally in 32 bit chunks Like an 80286 machine it operates with a 16 bit data bus and a 24 bit address bus This constructions allows the Panther II system to run 386 software in essentially a 286 hardware environment For the memory system It supports up to 16 MByte of DRAMs on the syste...

Page 10: ...dware and software compatible with associated PC AT products This means that virtually all the hardware and software that is available for the PC AT can also be run on a system you build around the Panther II system It supports MS DOS Xenix Unix and all PC AT application programs Users can run applications designed for the PC AT on Panther II without any modification Multi tasking and multi user c...

Page 11: ...INTRODUCTION __________________________________ 1 3 THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Page 12: ......

Page 13: ...SX CPU Optional 80387SX Co processor Speed Turbo normal speed Software hardware selectable Memory Subsystem 16MB maximum using 4M SIMMs 2MB using 256Kbx4 DRAM chips Page Interleave memory Page mode memory 2 way and 4 way interleave mode System BIOS shadow Video BIOS shadow Parity Check option 512K Eprom BIOS ...

Page 14: ... bit expansion slots System Support Functions 8 Channel DMA Direct Memory Access 16 level interrupt 3 programmable timers CMOS RAM for system configuration Real time clock with battery backup OS 2 Optimization Fast A20 gate and fast reset Other Features On board POWERGOOD test circuit External battery connector Hardware turbo switch ...

Page 15: ...s against which it competes the 386SX inherits the 386 s protected and virtual 8086 modes and internal 32 bit processing Instruction pipeling high bus bandwidth and a very high performance ALU ensure short average instruction execution times and high system throughput The 386SX CPU is capable of execution at sustained rates of 2 5 3 0 million instructions per second The integrated memory managemen...

Page 16: ...X Microprocessor are unlocked when the processor operates in Protected Virtual Address Mode Protected Mode vastly increases the linear address space to four gigabytes and allows the running of virtual memory programs of almost unlimited size In addition Protected Mode allows the 386SX Microprocessor to run all of the existing 386DX CPU 80286 and 8086 CPU s software while providing a sophisticated ...

Page 17: ... the 386SX Microprocessor dramatically increases the processing speed of computer application software which utilizes mathematical operations This makes an ideal computer workstation platform for applications such as financial modelling and spreadsheet CAD CAM or graphics The 387SX Math CoProcessor adds over seventy mnemonics to the 386SX Microprocessor instruction set Specific 387SX math operatio...

Page 18: ...cessor is completely upward compatible with software for the 8086 8087 and 80286 80287 real address mode systems In protected mode the 386SX Microprocessor and 387SX Math Coprocessor is completely upward compatible with software for the 80286 80287 protected mode system In all modes the 386SX Microprocessor and 387SX Math Coprocessor is completely compatible with software for the 386 Microprocesso...

Page 19: ...ation of each is given in the following sections Interleave Operation Two way interleaving is automatically enabled whenever both memory banks of a pair are populated with same DRAM types If all four banks are populated with same DRAMs four way interleaving automatically occurs If the four memory banks are not populated with same DRAMs two way interleaving occurs on pairs that are of the same type...

Page 20: ... then four way interleaving is automatically activated Page Mode Operation Memory Interleaving operates independently of page mode Page mode is active whether one bank or both are populated The page mode operation results in no additional wait state penalty for either reads or writes which immediately follow reads to the same DRAM page When pairs of banks are installed interleaving is automaticall...

Page 21: ... the BIOS then will have significant improvement because access to DRAM is much faster than ROM Memory Remapping If shadow RAM is not used at memory area 0D0000H 0EFFFFH remapping is possible Then local memory areas 0A0000H 0BFFFFH and 0D0000H 0EFFFFH each 128K bytes are mapped to the top of total memory for it to be used as extended memory Memory areas 0F0000H 0FFFFFH system BIOS and 0C0000H 0CFF...

Page 22: ...rading the performance The Panther II system is exactly designed with this capability in mind To be compatible with the existing add on cards user has the option of defining the I O speed If for example the peripheral card is not capable of operating at high speed user can define a slow speed for I O slot operation while still maintain the rest of the system at very high speed ...

Page 23: ...upt DMA Timer Real time clock Clock and ready generation I O channel control All system functions are 100 compatible to AT standard I O channel of Panther II is designed to be compatible with standard AT bus All the expansion cards conformed to the standard AT bus can be used in Panther II without problem ...

Page 24: ......

Page 25: ...system board it s located on U16 at the corner of the motherboard The socket is a 68 pin PLCC socket align the chip so that its orientation mark matches up with that of the socket When you are sure the pins are aligned correctly press firmly and evenly on the 80387SX into the socket Make sure that the coprocessor is firmly inserted into the socket The speed rating of 80387SX should match that of t...

Page 26: ...INSTALLING COMPONENTS __________________________________ 3 2 ...

Page 27: ...d SIMM type memory simultaneously Please note that however you cannot install both memory types marked with the same bank reference For example if you had already installed DIP memory into BANK 0 you can no longer install SIMM into the memory modules referenced as BANK 0 One bank of memory refers to 2 SIMM modules or 6 DIP memory chips 4x44256 2x41256 For the SIMM memory user can install 256K 1M o...

Page 28: ... and the parity checking logic can be disabled Hence the user can left those sockets unpopulated and thus allowing you to minimize the system cost There are several combinations of DRAM types you may consider So a basic system can be equipped with fewer memory and later more memory can be added when upgrading the system As a typical case a basic system can be equipped with 2 Megabyte memory using ...

Page 29: ...pairs of banks various controls described act on memory in bank pairs The short hand notation Bank A is used when describing something that affects memory banks 0 and 1 as a set Similarly Bank B is used to describe memory banks 2 and 3 as a set Memory Configuration Table 16 Bit DRAM Banks Page Interleave Total Bank 0 Bank 1 Bank 2 Bank 3 A B Memory 256K 256K 2 P 1 0MB 256K 256K 256K 256K 4 P 4 P 2...

Page 30: ...odule the module edge should angled into the socket s contact and then the module is pivoted into position where the locking latches will secure it If the module edge is not completely inserted into the socket it cannot be pivoted to be in vertical position and should be dragged out and inserted again Do not force the module into the SIMM socket It will damage the locking latches The modules shoul...

Page 31: ...INSTALLING COMPONENTS __________________________________ 3 7 RAM Module Orientation ...

Page 32: ... mode when pressed In addition to the front panel switch you can also change the system speed via keyboard Press Ctrl Alt and for turbo mode and Ctrl Alt and for normal mode In either case the turbo LED will light up to indicate whether the system is now running in turbo mode or normal mode In turbo mode the turbo LED will turned on In normal mode the turbo LED is off It should be note that turbo ...

Page 33: ...ETTING There are a few jumpers in the motherboard that allow the user to select the desired system configuration The following tables show the function and default settings of these jumpers Display Selection JP6 Display Type 1 2 Monochrome Display 2 3 CGA EGA VGA PGA Default setting ...

Page 34: ...user to reset the CMOS Setup in case of critical error occurred in the Setup Make sure that the power is OFF before you do this operation Also be certain that this jumper is re installed to its normal position after resetting the CMOS Setup After the CMOS Setup is cleared the Setup will be loaded with the BIOS default value upon power up and you may continue to define the system configuration as u...

Page 35: ... of the system unit Connector Function P1 Hardware reset connector P2 Speaker connector P3 Turbo switch connector P4 Turbo LED connector P5 Power LED Ext Lock connector P6 P7 Power supply connector P8 External battery connector KB1 Keyboard connector Pin assignments of the connectors are illustrated as follows P 1 Hardware Reset Connector Pin Assignment 1 Selection Pin 2 Ground ...

Page 36: ...__________________________ 3 12 P 2 Speaker Connector Pin Assignment 1 Data out 2 5 Vdc 3 Ground 4 5 Vdc P 3 Turbo Switch Connector Pin Assignment 1 Selection Pin 2 Ground P 4 Turbo LED Connector Pin Assignment 1 5 Vdc 2 LED signal ...

Page 37: ... 13 P 5 Power LED Ext Lock Connector Pin Assignment 1 5 Vdc 2 Key 3 Ground 4 Keyboard inhibit 5 Ground P6 P7 Power Supply Connector Pin Assignment 1 POWERGOOD 2 5 Vdc 3 12 Vdc 4 12 Vdc 5 Ground 6 Ground Pin Assignment 1 Ground 2 Ground 3 5 Vdc 4 5 Vdc 5 5 Vdc ...

Page 38: ..._________________________________ 3 14 6 5 Vdc P 8 External Battery Connector Pin Assignment 1 Vdc 2 not used 3 Ground 4 Ground KB 1 Keyboard Connector Pin Assignment 1 Keyboard clock 2 Keyboard data 3 Spare 4 Ground 5 5 Vdc ...

Page 39: ...EMORY MAPPING Address Range Function 000000 7FF FFF 000K 512K System Board Memory 512K 080000 09F FFF 512K 640K System Board Memory 128K 0A0000 0B FFFF 640K 768K Display Buffer 128K 0C0000 0D FFFF 768K 896K Adaptor ROM Shadow RAM 128K 0E0000 0E FFFF 896K 960K System ROM Shadow RAM 64K 0F0000 0FF FFF 960K 1024K System BIOS ROM Shadow RAM 64K 100000 7FF FFF 1024K 8192K System Memory 800000 FFF FFF 8...

Page 40: ...4 2 ...

Page 41: ...ESS HEX DEVICE 000 01F DMA Controller 1 8237 020 03F Interrupt Controller 1 8259 Master 040 05F Timer 8254 060 06F Keyboard Controller 070 07F Real Time Clock NMI non maskable interrupt mask 080 09F DMA Page Register 74LS612 0A0 0BF Interrupt Controller 2 8259 0C0 0DF DMA Controller 2 8237 0F0 Clear Math Coprocessor Busy 0F1 Reset Math Coprocessor 0F8 0FF Math Coprocessor Port ...

Page 42: ... Disk 200 207 Game I O 278 27F Parallel Printer Port 2 2F8 2FF Serial Port 2 300 31F Prototype Card 360 36F Reserved 378 37F Parallel Printer Port 1 380 38F SDLC bisynchronous 2 3A0 3AF Bisynchronous 1 3B0 3BF Monochrome Display and Printer Adapter 3C0 3CF Reserved 3D0 3DF Color Graphics Monitor Adapter 3F0 3F7 Diskette Controller 3F8 3FF Serial Port 1 ...

Page 43: ...nels 0 through 2 Channel 0 System Timer Gate 0 Tied on Clk in 0 1 190 Mhz OSC Clk out 0 8259 IRQ 0 Channel 1 Refresh Request Generator Gate 1 Tied on Clk in 1 1 190 Mhz OSC Clk out 1 Request Refresh Cycle Channel 2 Tone Generation of Speaker Gate 2 Controlled by bit 0 of port hex 61 PPI bit Clk in 2 1 190 Mhz OSC Clk out 2 Used to drive the speaker ...

Page 44: ...TECHNICAL INFORMATION __________________________________ 4 6 Note Channel 1 is programmed to generate a 15 micro second period signal ...

Page 45: ...__________________________ 4 7 The 8254 Timer Counters are treated by system programs as an arrangement of four programmable external I O ports Three are treated as counters and the fourth is a control register for mode programming ...

Page 46: ...processor NMIParity or I O Channel Check Interrupt Controllers CTLR 1 CTLR 2 IRQ0 Timer Output 0 IRQ1 Keyboard Output Buffer Full IRQ2 Interrupt from CTLR 2 IRQ8 Real time Clock Interrupt IRQ9 Software Redirected to INT 0AH IRQ2 IRQ10 Reserved IRQ11 Reserved IRQ12 Reserved IRQ13 Coprocessor IRQ14 Fixed Disk Controller IRQ15 Reserved IRQ3 Serial Port 2 IRQ4 Serial Port 1 IRQ5 Parallel Port 2 IRQ6 D...

Page 47: ...TECHNICAL INFORMATION __________________________________ 4 9 ...

Page 48: ...EMORY ACCESS DMA Panther II supports seven DMA channels Channel Function 0 Spare 8 bit transfer 1 SDLC 8 bit transfer 2 Floppy Disk 8 bit transfer 3 Spare 8 bit transfer 4 Cascade for DMA Controller 1 5 Spare 16 bit transfer 6 Spare 16 bit transfer 7 Spare 16 bit transfer ...

Page 49: ...__________ 4 11 The following shows the addresses for the page register Page Register I O Address HEX DMA Channel 0 0087 DMA Channel 1 0083 DMA Channel 2 0081 DMA Channel 3 0082 DMA Channel 5 008B DMA Channel 6 0089 DMA Channel 7 008A Refresh 008F ...

Page 50: ...tive by connecting the device to an external battery when system power is turned off Upon you turn the system power on CMOS will load the recorded configuration into the system so that the system can function in the right track with the equipped devices However if you have not configured the CMOS or the battery which supports the power to the CMOS is weaken you need to redefine the necessary param...

Page 51: ...disk type byte drives C and D 13 Reserved 14 Equipment byte 15 Low base memory byte 16 High base memory byte 17 Low expansion memory byte 18 High expansion memory byte 19 2D Reserved 2E 2F 2 byte CMOS checksum 30 Low expansion memory byte 31 High expansion memory byte 32 Date century byte 33 Information flags set during power on 34 7F User RAM Standby These bytes are not included in the checksum c...

Page 52: ...es real time clock bytes and specifies their addresses Byte Function Address 0 Seconds 00 1 Second alarm 01 2 Minutes 02 3 Minute alarm 03 4 Hours 04 5 Hour alarm 05 6 Day of week 06 7 Date of month 07 8 Month 08 9 Year 09 10 Status Register A 0A 11 Status Register B 0B 12 Status Register C 0C 13 Status Register D 0D ...

Page 53: ... Panther II provides six expansion slots four of which are 16 bit and two are 8 bit expansion slot The I O channel supports I O address space from hex 100 to hex 3FF Selection of data access either 8 or 16 bit 24 bit memory addresses 16MB Interrupts DMA channels Memory refresh signal ...

Page 54: ...TECHNICAL INFORMATION __________________________________ 4 16 The following figure shows the pin numbering for I O channel connectors JA1 to JA6 ...

Page 55: ...TECHNICAL INFORMATION __________________________________ 4 17 The following figure shows the pin numbering for I O channel connectors JB1 JB4 ...

Page 56: ... O A1 I O CH CK I A2 SD7 I O A3 SD6 I O A4 SD5 I O A5 SD4 I O A6 SD3 I O A7 SD2 I O A8 SD1 I O A9 SD0 I O A10 I O CH RDY I A11 AEN O A12 SA19 I O A13 SA18 I O A14 SA17 I O A15 SA16 I O A16 SA15 I O A17 SA14 I O A18 SA13 I O A19 SA12 I O A20 SA11 I O A21 SA10 I O A22 SA9 I O A23 SA8 I O A24 SA7 I O A25 SA6 I O A26 SA5 I O A27 SA4 I O A28 SA3 I O A29 SA2 I O A30 SA1 I O A31 SA0 I O ...

Page 57: ...Power B4 IRQ9 I B5 5 Vdc Power B6 DRQ2 I B7 12 Vdc Power B8 0WS I B9 12 Vdc Power B10 GND Ground B11 SMEMW O B12 SMEMR O B13 IOW I O B14 IOR I O B15 DACK3 I B16 DRQ3 O B17 DACK1 I B18 DRQ1 O B19 Refresh I O B20 CLK O B21 IRQ7 I B22 IRQ6 I B23 IRQ5 I B24 IRQ4 I B25 IRQ3 I B26 DACK2 O B27 T C O B28 BALE O B29 5 Vdc Power B30 OSC O B31 GND Ground ...

Page 58: ... O Channel C Side I O Pin Signal Name I O C1 SBHE I O C2 LA23 I O C3 LA22 I O C4 LA21 I O C5 LA20 I O C6 LA19 I O C7 LA18 I O C8 LA17 I O C9 MEMR I O C10 MEMW I O C11 SD8 I O C12 SD9 I O C13 SD10 I O C14 SD11 I O C15 SD12 I O C16 SD13 I O C17 SD14 I O C18 SD15 I O ...

Page 59: ...1 I O Channel D Side I O Pin Signal Name I O D1 MEM CS16 I D2 I O CS16 I D3 IRQ10 I D4 IRQ11 I D5 IRQ12 I D6 IRQ15 I D7 IRQ14 I D8 DACK0 O D9 DRQ0 I D10 DACK5 O D11 DRQ5 I D12 DACK6 O D13 DRQ6 I D14 DACK7 O D15 DRQ7 I D16 5 Vdc Power D17 MASTER I D18 GND Ground ...

Page 60: ......

Page 61: ...ry out a self test upon reset The test is very intensive and covers all parts of hardware It takes a while before messages are shown on the screen It does not mean that the system is not working when the screen is blank So wait for a while after turning on the power and listen carefully to the speaker Some errors are reported by a number of beep sounds After completing the self test the BIOS will ...

Page 62: ...ror Message 1 DRAM Refresh Failure 2 Base 64KB Memory Parity Error 3 Base 64KB Memory Failure 4 System Time Failure 5 Processor Error 6 Keyboard Controller Gate A20 Failure 7 Processor Exception Interrupt Error 8 Display Memory Read Write Error Video Adapter 9 ROM Checksum Error 10 CMOS Shutdown Register Read Write Error If no error is found during self test the system BIOS will proceed to boot fr...

Page 63: ...Hard Disk D Type None Display Type VGA or EGA Serial Port s None ROM BIOS Date 05 10 91 Parallel Port s 3BC Do check the list to make sure that the configuration is correct Sometimes problems arise because of the incorrect information of the configuration For example if you forget to modify the setup after changing the floppy disk drive from one type to another it can not boot from floppy disk or ...

Page 64: ...e completed before operating the system Otherwise the system may not run properly with the incorrect setup information Run the setup again if the configuration is changed To enter the setup section press DEL when the following message is shown after the power on memory test Hit DEL if you want to run SETUP Whenever the system BIOS finds that the configuration of the system is altered a message wil...

Page 65: ...ILITIES C 1990 American Megatrends Inc All Rights Reserved STANDARD CMOS SETUP ADVANCED CMOS SETUP ADVANCED CHIPSET SETUP AUTO CONFIGURATION WITH BIOS DEFAULTS HARD DISK UTILITY WRITE TO CMOS AND EXIT DO NOT WRITE TO CMOS AND EXIT Standard CMOS setup for Changing Time Date Hard Disk Type etc ...

Page 66: ...____ A 6 1 STANDARD CMOS SETUP The memory size is automatically detected by the BIOS So you are only required to set the date time hard disk type floppy drives type display type and keyboard The system configuration information are shown as follows ...

Page 67: ...KB Daylight Saving Disabled Cyln Head WPcom LZone Sect Size Hard Disk C type Not Installed Hard Disk D type Not Installed Floppy Drive A 1 2 MB 5 Floppy Drive B 1 44 MB 3 Primary Display VGA or EGA Sun Mon Tue Wed Thu Fri Sat Keyboard Installed 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Month Jan Feb Dec Date 01 02 03 31 22 23 24 25 26 27 28 Year 1901 1902 2099 29 30 31 1 2 3 4 5 6 7 8 ...

Page 68: ...AMI System BIOS __________________________________ A 8 ...

Page 69: ...pe The parameters such as cylinder number head number sector number and pre compensation must match your fixed disk s parameters Use PgUp and PgDn keys to change the fixed disk type If the type of your fixed disk is not included in the hard disk list define a new type as type 47 Use left and right arrow keys to move between the parameter fields and enter the parameters The parameters will be store...

Page 70: ...er it is already formatted If not the BIOS has to check for a while before reporting the hard disk error In fact the error arises only because the hard disk is not formatted If the hard disk is formatted you can run DOS FDISK and DOS FORMAT Some fixed disks are specially handled and must be set to Not Installed Consult the fixed disk manual for details OPTION 3 FLOPPY DISK DRIVE Four types of flop...

Page 71: ... that drive OPTION 4 DISPLAY Four types of display are supported 1 CGA 80 column mode 2 CGA 40 column mode 3 VGA PGA EGA 4 Monochrome If the type of display is incorrect the BIOS will prompt you and ask you to set up again But the BIOS is still able to display messages on the display attached to the system Thus you can enter the setup program OPTION 5 KEYBOARD If a keyboard is attached to the syst...

Page 72: ...ts are set to default values by the system BIOS Usually there is no need to modify these registers unless the configuration is changed Since improper settings of these registers may cause the system to malfunction check your settings carefully before exit In ADVANCED CMOS SETUP the main menu is shown as below ...

Page 73: ... Shadow E800 16K Disabled Memory Test Tick Sound Enabled Adapter ROM Shadow EC00 16K Disabled Hit DEL Message Display Enabled Adapter ROM Shadow E000 16K Disabled Hard Disk Type 47 RAM Area 0 300System ROM Shadow F000 16K Disabled Wait for F1 if Any Error Enabled System Boot Up Num Lock On Numeric Processor Disabled Floppy Drive Seek At Boot Enabled System Boot Up Sequence A C Video ROM Shadow C00...

Page 74: ...AMI System BIOS __________________________________ A 12 ...

Page 75: ...llows for each of the options on the Advanced CMOS Setup Screen If any problem in some options press the F1 Help Key Typematic Rate Programming By enabling this option the user can adjust the rate at which a keystroke is repeated The options Typematic Rate Delay and Typematic Rate also affect this rate When a key is pressed and held down the character appears on the screen and after a delay set by...

Page 76: ...ion to DOS 1 KB 1KB in the main memory will be allocated for hard disk type storage and the main memory is reduced to 639 KB If shadow RAM for system BIOS F000H is enabled the hard disk type 47 will be added to the standard hard disk type table Hence the hard disk type 47 data area is not needed and this option is ignored Hard disk type 47 will be considered as a standard hard disk type by softwar...

Page 77: ...It allows you to boot from device A if necessary However it will directly boot from hard disk when selecting C A The BIOS will not read the floppy disk A unless there is no drive C installed Thus it takes less time for boot up Video Adapter and System ROM shadow There are two options of shadow RAM for video adapter ten options of shadow RAM for add on card and one for the system BIOS For the optio...

Page 78: ...card which ROM BIOS locates at one of the Adapter ROM shadow options you may select corresponding option to shadow this ROM Sometimes there may be problem after enabling the shadow memory on the add on card In this case you cannot enable the shadow RAM function for this add on card ...

Page 79: ...emory access under the page interleave scheme On the other hand a setting of 1 W S will allow the use of less expensive slow DRAM but with performance reduction As a general rule For 25MHz and 20MHz system you may select 0 W S if DRAM with access time of 80ns or faster is used otherwise select 1 W S For 16MHz system you may select 0 W S if DRAM with access time of 100ns or faster is used otherwise...

Page 80: ...n setting it make sure that the peripheral cards are capable of operating at higher speed before making changes otherwise problem could arise Options of CLK2 6 CLK2 4 are available refer to the following table for the corresponding I O speed of different systems It is strongly recommended that the AT Bus speed be kept at or below 8 33 so as to comply with ISA AT Bus specification System Speed ATCL...

Page 81: ... extended memory if this option is enabled therefore it is advisable to enable this option Otherwise this area can only be accessed as shadow RAM function However 256KB memory relocation is automatically invalidated to avoid memory contention if any memory segment between 0D0000H to 0EFFFFH is enabled as shadow RAM in the Advanced CMOS setup ...

Page 82: ... of the system to its optimum performance together with high reliability Once the Auto Configuration is applied the Advanced CMOS Setup is automatically re configured with the default settings the user need not bother about the settings in the ADVANCED CMOS SETUP But you will still required to set those options in the STANDARD CMOS SETUP after the Auto Configuration is used ...

Page 83: ...I System BIOS __________________________________ A 19 5 HARD DISK UTILITY Hard Disk Utility program option is invoked by selecting the HARD DISK UTILITY at the Main Setup Menu the screen is shown as below ...

Page 84: ... 1990 American Megatrends Inc All Rights Reserved Cylin Head WPcom LZone Sect Size MB Hard Disk C Type 47 USER TYPE 1314 7 1314 1314 17 76 Hard Disk D Type Not Installed Hard Disk Type can be changed from the STANDARD CMOS SETUP option in Main Menu Hard Disk Format Auto Interleave Media Analysis ...

Page 85: ...AMI System BIOS __________________________________ A 21 ...

Page 86: ...ith the hard drive Your hard disk manual might also include the optimum interleave factor In this case assuming that you have a list of bad tracks and know the interleave factor it will not be necessary to take the auto interleave and media analysis options Simply follow the instructions in the Hard Disk Format If you have a bad track list but have not been provided with the optimum interleave fac...

Page 87: ...SK UTILITY C 1990 American Megatrends Inc All Rights Reserved Cylin Head WPcom LZone Sect Size MB Hard Disk C Type 47 USER TYPE 1314 7 1314 1314 17 76 Hard Disk D Type Not Installed Hard Disk Format Disk Drive C D C Disk Drive Type 47 Interleave 1 16 3 Mark Bad Tracks Y N Proceed Y N ...

Page 88: ...AMI System BIOS __________________________________ A 22 ...

Page 89: ...he Media Analysis option The value for Disk Drive is C for a C Drive or D for a D Drive If two disk drives have been previously entered at the Standard CMOS Setup Scree then the ID C D will appear to the right of the question mark following the Disk Drive field Choose which drive you wish to format by selecting the appropriate letter and pressing ENTER If only one drive was selected at the Standar...

Page 90: ...ion and they will then be marked as bad in order to prevent data from being stored there The default for the Proceed prompt is N to prevent accidental formatting of the hard drive and subsequent loss of data Once this prompt is changed to Y and the ENTER key pressed andy data residing on the hard disk will be irrevocably lost Make sure that your hard disk is allowed to be formatted Some hard disks...

Page 91: ...UTO INTERLEAVE UTILITY The Auto Interleave Utility determines the optimum interleave value by measuring the transfer rate for four different interleave values The cylinders heads and sectors formatted for each value will be displayed in the actively box on the screen ...

Page 92: ...UTILITY C 1990 American Megatrends Inc All Rights Reserved Cylin Head WPcom LZone Sect Size MB Hard Disk C Type 47 USER TYPE 1314 7 1314 1314 17 76 Hard Disk D Type Not Installed Auto Interleave Bad Track Disk Drive C D C Ms Cyln Head Disk Drive Type 47 Mark Bad Tracks Y N N Proceed Y N ...

Page 93: ...AMI System BIOS __________________________________ A 25 ...

Page 94: ...a Analysis Utility performs a series of tests to locate bad tracks on the hard disk All bad tracks on the hard disk will be listed in the Bad Track List Box Since this test writes to all cylinders and heads on the hard disk to verify andy bad tacks the test may require several minutes to complete ...

Page 95: ...ETUP PROGRAM HARD DISK UTILITY C 1990 American Megatrends Inc All Rights Reserved Cylin Head WPcom LZone Sect Size MB Hard Disk C Type 47 USER TYPE 1314 7 1314 1314 17 76 Hard Disk D Type Not Installed Media Analysis Disk Drive C D C Disk Drive Type 47 Proceed Y N ...

Page 96: ...AMI System BIOS __________________________________ A 26 ...

Page 97: ...f your system unit for example the screws on the rear of the system unit with one hand then hold the component you are installing on the other hand This will place your body the component and the system unit at the same ground potential preventing an accidental static discharge Be sure to handle circuit boards by the edges only and do not touch the component pins or solder joints Grasp diskette dr...

Page 98: ... or sides of the computer are open and that air circulation is good Check the clearance at the back of the computer the power supply contains a fan to blow air out of the case make sure the fan is not blocked by cables or papers Don t push your computer flush against the wall leave it some breathing space Heat can destroy computer chips CLEANING THE GOLDEN FINGER Whenever inserting an add on card ...

Page 99: ...t once a year take the cover off your computer and vacuum the interior to remove accumulated dust Use a brush attachment on the vacuum and carefully go over all exposed parts To prevent dust from accumulating on the mother board installing all mounting plates on the rear of the case Regularly examine your system and if necessary vacuum the interior of the system with a miniature vacuum ...

Page 100: ...OPERATION AND MAINTENANCE __________________________________ B 4 THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Page 101: ...C 1 Appendix C System Board Layout _______________________________ ...

Page 102: ...C 2 ...

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