Built-in BIOS Setup Program
Contents
1. 4 16 Chapter 1 Introduction Introduction 1 1 General Specifications and Features The UC4913 is a cost effective high performance mainboard based on IBM PC AT compatible system It uses the UM82C491 real single chip which provides high integration 486 AT based system design Processor Chipset System BIOS K B BIOS System Memory Cache Memory Slots Motherboard Connectors 80486 SX DX PGA or 80486 SX DX PQFP 25 33 50 MHz 80486 DX2 50 66 MHz P23T 50 66 MHz CYRIX M6 40 MHz CPU AMD 40 MHz CPU UM82C491 real single chip UM82C493A TTL integration AMI BIOS 64KB AMI 8042KF Supports 2 banks system memory up to 64 MB 64KB 128KB or 256KB Six 16 bit two 8 bit ISA slots and 3 VESA slots 4 Layers 2 3 baby AT size Power AT Keyboard Reset Speaker External battery 1 1 UC4913 User s Manual Turbo switch Turbo LED Keylock Feature e Fully IBM PC AT compatible e Support up to 64MB system memory e Supports 64K 128K or 256K cache e Support six 16 bit two 8 bit ISA slots e Support three VESA bus masters and slaves mode Memory Configuration Chapter 2 Memory Configuration The UC4913 DRAM configurations are discussed followed by DRAM module installation and removal Users are recommended to read through this chapter before installing or removing memory 2 1 System Memory The total size of on board memory depends on the combinations o2. 4 7 4 Non Fatal Errors In Display There are two types of errors in this category l One that requires you to press the F1 key and give you the option of running SETUP One that requires you to press the Fl key and don t give you the SETUP option 4 7 5 Errors With Setup Option l CMOS battery state low indicates failure of CMOS battery or a failure in the set and checksum tests CMOS system options not set indicates failure of CMOS battery or a failure in the set and checksum tests CMOS checksum failure indicates CMOS battery low or a failure in the set and checksum tests CMOS display type mismatch indicates failure of display verifica tion CMOS memory size mismatch indicates system configuration and setup failure CMOS time amp date not set indicates system configuration verifica tion error and setup error in timer Errors Without Setup Option CH 2 timer error indicates channel 2 1 0 timer test failure Built in BIOS Setup Program 4 7 BIOS Errors and Messages After entering setup choices the system will reboot The setup summary and system information will appear on screen along with messages These may include ERROR messages concerning the system or setup AMI BIOS performs various diagnostic tests at the time the system is turned on Whenever an error is encountered during these tests there will be either a few short beeps or an error displayed on the monitor If the error occurs before the
3. RAM DATA RAM U13 U14 U16 U18 U20 U15 U17 U19 U21 8Kx8 20ns 8Kx8 20ns 8Kx8 20ns 8Kx8 20ns 32Kx8 20ns None 32Kx8 20ns 32Kx8 20ns 32Kx8 20ns 2 2 Jumper Setting and Connectors Chapter 3 Jumper Settings and Connectors This chapter will assist you in setting up the UC4913 before you install it in a system case If your UC4913 has already been installed and you do not wish to change the configuration settings you can skip over this section 3 1 Jumper Settings The UC4913 has several jumper switches that must be set to define a system configuration These switches are three pin components on the mainboard They are turned off and on by placing or removing a cover cap over the pins This is called a short or closed jumper All jumpers must be set to one of the possible two settings 3 1 UC4913 User s Manual e o P m B B BBB BB B ee ee BANKO a BANK1 eo BA 1 1 p gjen Bl as 1 RE U14 UM82C Jes Tee E pie 29 491F I VESA i Ue z SLOTS NI DN rie Sen v E oo P20 CPU ag pe g Socket E s S J P21 JP7 JP12 JP 168 B UP17 eee oreco eo NAOC JP3 JP4 JPS J1 JP6 EE pe peso T 1 poss ES TURBOLrurso fESEr K 1 L MA PRAKEN 3 2 Jumper Setting and Connectors The table below summarizes the function and settings of each jumper on the uc4913 Function Jumper Settings CPU Mode Select Type of CPU used Clock
4. SETUP One that requires you to press the FI key and don t give you the SETUP option Errors With Setup Option CMOS battery state low indicates failure of CMOS battery or a failure in the set and checksum tests CMOS system options not set indicates failure of CMOS battery or a failure in the set and checksum tests CMOS checksum failure indicates CMOS battery low or a failure in the set and checksum tests CMOS display type mismatch indicates failure of display verifica tion CMOS memory size mismatch indicates system configuration and setup failure CMOS time amp date not set indicates system configuration verifica tion error and setup error in timer Errors Without Setup Option CH 2 timer error indicates channel 2 1 0 timer test failure Built in BIOS Setup Program keyboard error indicates keyboard test failure KB Interface error indicates keyboard test failure Display switch setting not proper indicates display type verification error 5 Keyboard is locked Unlock it 6 FDD controller error indicates system configuration verification error in diskette setup 7 HDD controller Failure indicates system configura tion verification error in hard disk setup 8 C Drive error indicates hard disk setup error 9 D Drive error indicates hard disk setup error 10 D Drive failure indicates hard disk failure 4 17 Appendix A Setting the System Speed There are two methods to select the system proces
5. Select Monitor Type Select Cache Memory Size Setting Weitek Power 9000 VESA VGA Card Local Bus Speed Select Local Bus Write Wait Select 486PQFP JP12 opened 486PGA JP 12 closed 80486DX DX2 P23T JP7 pin 1 2 amp 3 4 closed AMD 486DX M6 C6 module 0486S XM6 AMD486SX JP9 closed JP 10 closed JP9 opened JP 10 closed JP9 closed JP10 opened SOMHz JP9 opened JP 10 opened Color JP11pin 2 3 closed JP13 opened JP 15 opened JP16 pin 1 2 closed JP17 opened JP13 pin 2 3 closed JP15 opened JP 16 pin 2 3 closed JP 17 closed JP13 pin 1 2 closed JP 15 closed JP16 pin 1 2 closed JP17 closed Non Installed lt 33MHz 3 3 UC4913 User s Manual JP21 pin 2 3 closed C6 present JP 20 pin 2 3 closed C6 Coprocessor JP19 pin 1 2 closed M6 C6 module or i on board C6 JP21 pin 1 2 closed C6 absent JP20 pin 1 2 closed JP19 pin 2 3 closed JP23 pin 1 2 closed CPU Clock JP23 pin 2 3 closed 3 2 Connectors There are several connectors located on the UC4913 They are used to connect with some peripheral devices to enhance the operating performance of the system Refer to Figure 3 1 for the positions of all the connectors on the mainboard Their functions are listed below Connector Function J3 Power Connector JP 14 Keyboard Connector J2 External Battery Connector P4 Turbo Switch Connector P6 Keylock Connector P3 Turbo LED Connector JP5 Reset Connector J1 Spe
6. Time fields include hour minutes seconds but you can only set the value of hour and minute Check and adjust these fields according to your clock or wrist watch B Floppy Drive A and B In this field you may specify the capacity and format of the floppy drives installed in your system R Hard Disk C and Hard Disk D In these fields you specify the physical and electronic properties of the standard hard disk drives installed in your system Relevant specifications include the number of cylinders and heads write pre compensation time read write head landing zone number of sectors per track The BIOS provides 46 predefined types of popular hard disk drives You select the appropriate type by scrolling forward backward using the lt PgUp gt and lt PgDn gt keys The relevant specifications of the selected drive will be immediately displayed on the corresponding field positions If for some reasons your particular drive is not one of the 46 predefined types simply scroll down to select type 47 then use the left lt lt gt and right lt gt gt arrow keys to move to the Cyln Cylinders Head WPcom Write Pre Com pensation LZone Landing Zone and Sec Sectors fields and directly key in the appropriate values The Setup program will calculate the capacity of the drive based on the input cylinder head and sector numbers and display the result on the capacity field for your reference Refer to Appendix A for the table
7. in the system or you can enable this option to test all the memory B Hard Disk Type 47 RAM Area The purpose of this field is to specify the address of the memory area used by the system BIOS for storing extended information such as to save the user definable drive type 47 You have the following options 0 300 To reserve the stack area at address 30h 0 4 7 UC4913 Users Manual e DOS 1KB To reserve the top 640 KB in the DOS base memory and reduce the size of base memory by 1 E Cyrix Coprocessor The available options are listed below Absent Present E Floppy Drive Seek At Boot The available options are listed below Disabled Enabled RB External Internal Cache Memory The available options are listed below Disabled Enabled B Password Checking Option The purpose of this field is to determine whether the password is asked for in every boot set to Always when entering into the Setup program set to Setup If you would like to disable password please refer to section 4 6 4 8 Built in BIOS Setup Program 4 5 Running the Advanced Chipset Setup To program the registers of the chipset choose the Advanced Chipset Setup option from the Setup main menu and press lt Enter gt The screen will display the following menu AMIBIOS SETUP PROGRAM ADVANCED CHIPSET SETUP C 1993 American Meg amp rends inc Ail Rights Reserved Auto Config Function Cache Read Option Cache Wr
8. of hard disk types B Primary Display In the display field you specify the display adapter installed in your system m Keyboard This setting is used to select Installed or Not Installed for the keyboard during the Power On Self Test Normally it should be set as Installed 4 6 Built in BIOS Setup Program E Base Memory and Extended Memory A small section in the upper right corner of the screen displays important status information on your system including base and extended memory amount They are updated automatically by the Setup program according to status detected by the BIOS self test no manual change is allowed 4 4 Running the Advanced CMOS Setup When you choose the RUN Advanced CMOS Setup option in the Setup main menu the screen displays the following menu AMIBIOS SETUP PROGRAM ADVANCED CMOS SETUP C 1993 American Megatrends Inc All Rights Reserved Above 1 MB Memory Test Disabled Hard Disk Type 47 RAM Area DOS 1KB Cyrix Coprocessor Absent Floppy Drive Seek At Boot Enabled External Cache Memory Enabled Internal Cache Memory Enabled Password Checking Option Setup ESC Exit fe Sel Ctri Pu Pd Modify F1 Help F2 F3 Color F5 Old Values F6 BiIOS Setup Defaults F7 Power On Defaults Figure 4 4 The Advanced CMOS Setup Program Screen B Above 1 MB Memory Test You can disable this option to pass the memory test if a lot of memory is installed
9. the system When you turn on the system power or press the reset button on the system case while the system is running not every system has this button the BIOS will first test the functionality of the system components and display a start up message similar to the following XXXX KB OK Hit lt Del gt if you want to run Setup The numeral digits will continue to count at the top left of the screen This represents the BIOS testing the mainboard memory chips Before the above message disappears you can press the lt Del gt key to run the Setup program To reset the system By pressing lt Ctrl gt lt Alt gt lt Del gt key combination when the system is up and running assuming you are running under DOS or other environments that support this feature the system will immedi ately reset itself and boot up Before booting up from a diskette or hard disk you can also see the below start up message Hit lt Del gt if you want to run Setup When the BIOS prompts you In the self test process if the BIOS detects inconsistent or incorrect Built in BIOS Setup Program configuration information or some physical system error it will display an error message on the screen and prompt you to take action for example Run SETUP UTILITY Press lt F1 gt to RESUME Press the lt F1 gt key and continue To Enter password If you set the password checking option to the Setup or Always field in the Advanced CM
10. OS Setup program after pressing the Del key to run the Setup program the Enter password message will be displayed on the screen Refer to section 4 6 Using the Change Password Setup 4 2 3 Running the SETUP Program When you call up the Setup program the screen displays a main menu similar to the following On screen instructions at the bottom of the screen explain how to use the program AMIBIOS SETUP PROGRAM BIOS SETUP UTILITIES C 1993 American Megatrends Inc All Rights Reserved STANDARD CMOS SETUP ADVANCED CMOS SETUP ADVANCED CHIPSET SETUP AUTO CONFIGURATION WITH BIOS DEFAULTS CHANGE PASSWORD AUTO DETECT HARD DISK WRITE TO CMOS AND EXIT DO NOT WRITE TO CMOS AND EXIT Standard CMOS Setup for Changing Time Date Hard Disk Type etc ESC EXIT gt T lt SelF2 F3 ColorF1 O Save amp Exit Figure 4 1 BIOS Setup Main Menu Options The following is a brief description of the six options of the Setup main menu 4 3 UC4913 User s Manual R STANDARD CMOS SETUP Display the standard CMOS Setup screen to check or modify general configu ration information The standard CMOS setup displays the date time floppy type hard disk type video type etc RB ADVANCED CMOS SETUP The ADVANCED CMOS SETUP option is used to set the various system options for the user including the above MB memory test etc R ADVANCED CHIPSET SETUP This Setup option is for the user who wishes to program the chips
11. Setup by Pressing the lt Del gt Key Do Any of the Following After Entering Setup i Alter Options to Make System Work ii Load BIOS Setup Defaults iii Load Power On Defaults Hit lt ESC gt to Stop Now Any Other Key to Continue Figure 4 2 BIOS Setup Warning Message 4 3 Running the Standard CMOS Setup To check or modify the general system configuration choose STANDARD CMOS SETUP from the Setup main menu and press lt Enter gt The screen will display the following BIOS SETUP PROGRAM ADVANCED CMOS SETUP C 1993 American Megatrends Inc All Rights Reserved Date mn date year Mon Aug 23 1993 Base memory 640 KB Time hour min sec 01 19 01 Ext memory d INE Cyin Head Wpcom LZone Sec Size Hard disk C type Not Installed Hard disk D type Not Installed Floppy drive A 1 2 MB 5 1 4 Floppy drive B Not Installed Primary display VGA PGA EGA Keyboard Installed Month Jan Feb Date 01 02 03 Year 1901 1902 ESC Exit YT lt Select F2 F3 Color PU PD Modify Figure 4 3 The Standard CMOS Setup Program Screen UC4913 User s Manual On screen instructions in the lower left comer of the screen explain how to use the program After making all selections press lt ESC gt key and then return to the main menu program to choose another Setup program m Date In the Date fields you manually set the electronic calendar on the mainboard only if the values are incorrect E Time
12. TITI l Nm T ger 49T aren A ba ap gad INTRODUCTION This manual has been designed to be useful for several purposes If the UC4913 is already set up in functioning system it will be helpful to review the manual to become familiar with the features of the board and where things are This will be helpful in the unlikely event there is a problem with the system For those who want to alter the board s configuration or to upgrade it the manual will serves as a guide to both procedure and specifications While the necessary information is included in the manual we recommend that unless you feel confident of your ability to do the work it would be best to have your dealer or a local service shop do it Before making alterations to the system check to see that doing so will not violate the system warranty If it does have the work done by an authorized dealer IMPORTANT The chip set requires correct configuration infor mation otherwise a malfunction may result CAUTION Static electricity can cause serious damage to integrated circuit chips To avoid building up a static electric charge on your body touch a grounded object before touching the chips and at frequent intervals as you handle the chips If chips are handed from one person to another the two should touch hands first then pass the chips Information presented in this publication has been carefully checked for reliability however no res
13. aker Connector 3 4 Built in BIOS Setup Program Chapter 4 Built in BIOS Setup Program This chapter provides detailed instructions on how to configure your system using the Built in BIOS Setup program and gives some technical information about your computer If you are not very familiar with microcomputers please read this chapter carefully before proceeding If you do not want to change the system s configuration you can skip this chapter Before you start to add optional devices to your system you should first learn how to set up your system and adjust its jumpers Refer to Chapter 3 for detailed information You may run the Setup program of the UC4913 only after all jumper setting adjustments have been completed At this time you should record what the configuration is and keep it for reference 4 1 Setup Summary Install any extra memory SIMMs Make all connections to board Install control cards monitor and any peripheral devices and drivers Turn on system At setup prompt press the Del key Aun R WN Type the password if you set the password checking option to Setup or Always in the Advanced CMOS Setup program 7 Choose Standard CMOS Advanced CMOS or Advanced Chipset Setup 8 Follow screen prompts 4 2 BIOS Setup Every AT compatible computer has battery supported CMOS memory other wise called non volatile RAM It stores information about your computer and peripheral device configur
14. ation Unlike ordinary RAM it retains the information even after you turn off your computer A computer needs to know certain things about itself so it can operate correctly when powered on A special type of software called BIOS Basic Input Output System is contained in read only memory ROM chips on the mainboard The BIOS reads information from the CMOS memory every time you power on the computer It then instructs the CPU and other devices to operate according to this information If the information it retrieves is incorrect or insufficient 4 1 UC4913 User s Manual the system may not be able to operate properly until accurate information is supplied You do this by means of the SETUP program built in the system BIOS 4 2 1 When Should You Run Setup 7 1 Although someone may have set up the system for you you may want to adjust the system to fit your needs Whenever you change some components in your system for example if you add a hard disk or more memory you must run Setup to record the new system configuration If you don t do so after adding memory the computer will prompt you to run Setup The last and most unlikely possibility is the loss of information in the CMOS memory You may never encounter this situation But if you do you can restore the information by running the Setup 4 2 2 How to Recall the Setup Program You can run the built in SETUP program in several ways 4 2 l When powering on
15. ck l Size are as follows e 16KB 512 KB 32KB IMB 64KB 2MB 128 KB e 4MB 256KB The options of Non Cacheable Block 2 Size are as follows 64KB 2MB 128 KB e 4MB 256 KB 8 MB 512 KB 16MB 1 MB According to the above settings you should set the proper address B Non Cacheable Block I Block 2 Base This function is to set the address of Non Cacheable Block I Block 2 Base from starting E Memory Remapping This option enables or disables the system to map the 384KB memory to address above the 1MB boundary This function cannot be used when the system memory is below 1MB If shadow RAMs are enabled only 256KB memory can be remapped E FIE Segment Shadow RAM The available options are listed below e Disabled e Enabled 4 12 Built in BIOS Setup Program e Cached Into 486 E C0000 C3FFF Shadow RAM If you have a shadowing of the video BIOS at C0000 C3FFF 16K you can enable this memory cacheable function R C4000 C7FFF Shadow RAM If you have a shadowing of the video BIOS at C4000 C7FFF 16K you can enable this memory cacheable function R 16 BIT DMA WAIT STATES The available options are listed below e 1 W S default e 2 WS 3 WS 24 WSS E 83BIT DMA WAIT STATES The available options are listed below e 1 W S default e 2 W S 3 WSS 2 4 WS UC4913 User s Manual 4 6 Using the Change Password Setup To change the password choose the CHANGE PASSWORD option f
16. display device is initialized the system reports the error with several short beeps If the error is FATAL the system halts after reporting the FATAL error If the error is NON FATAL the process continues after reporting the error 4 7 1 Fatal Errors Through Beeps These errors are conveyed through a number of beeps Beep Count Meaning DRAM Refresh Failure Base 64 KB RAM Failure System Timer Failure Processor Failure Keyboard Controller GATE A20 Error Virtual Mode Exception Error ROM BIOS Checksum Failure 4 7 2 Non Fatal Errors Through Beeps These errors are conveyed as one long beep followed by several short beeps Meaning Conventional and Extended Memory Test Failure Display Test and Vertical and Horizontal Retrace Test Failure UC4913 User s Manual 4 7 3 Fatal Errors Shown in Display When these errors are displayed the screen is cleared and the error message display is followed by a line saying SYSTEM HALTED l Sr E ee 4 7 4 CMOS INOPERATIONAL indicates failure of CMOS shutdown register test 8042 GATE A20 ERROR error in getting into protected mode INVALID SWITCH MEMORY FAILURE DMA ERROR DMA controller page register test failed DMA 1 ERROR DMA Unit 1 register test failed DMA 2 ERROR DMA Unit 2 register test failed Non Fatal Errors In Display There are two types of errors in this category One that requires you to press the F1 key and give you the option of running
17. et registers The chipset registers control most of the system options in the computer etc R AUTO CONFIGURATION WITH BIOS DEFAULTS This option allows for automatic configuration of all the options in the Advanced CMOS Setup Advanced Chipset Setup with the BIOS defaults RB CHANGE PASSWORD The password is required for entering the Setup program or booting your system The user can change the current password stored in the CMOS by accessing this option R AUTO DETECT HARD DISK This option allows for automatic detect the type of hard disk drive include the number of cylinders and heads write pre compensation time read write head landing zone number of sectors per track R WRITE TO CMOS AND EXIT Choose this option to save the changes you have made in the Standard Setup Advanced Setup and Advanced Chipset options and then exit to reboot the system B DO NOT WRITE TO CMOS AND EXIT Choose this option to abandon all previous settings and then exit to reboot the system To choose an item from the Setup main menu move the cursor to appropriate line using the Up lt T gt and Down lt d gt arrow keys and press lt Enter gt The screen will display a warning message as below 4 4 Built in BIOS Setup Program AMIBIOS SETUP PROGRAM WARNING INFORMATION C 1993 American Megatrends Inc All Rights Reserved Improper Use of Setup May Cause Problems If System Hangs Reboot System and Enter
18. fdifferent types of DRAM modules installed on the memory banks Option Bank 0 Bank 1 _ Memory Amount _ 2 1 1 DRAM Module Insertion The SIMMs must be seated on the sockets as firmly aS possible and because of the fragility of the slot you must be careful when inserting or removing the module 1 Align the module so the pin l marking and comer notch of the module correspond to the SIMM socket pin 1 marking at the rear of the board The module can fit in the socket one way only Do not force it 2 Push the module against the clip arms with your thumbs until a click sound is heard the little plastic tabs appear in the latching holes on the RAM module board and the clip arms fully grab the module board 2 1 UC4913 User s Manual 2 1 2 DRAM Module Removal If possible use a SIMM extraction tool otherwise use the following method 1 Carefully use your thumbs to bend outward the plastic tab ends on both sides of the slot 2 The RAM module board is automatically ejected off the clip arms 3 Take it out of the socket 4 Repeat the steps 1 through 3 to release the other RAM modules 2 2 Cache Memory Subsystem The UC4913 accepts optional 64 KB 128 KB or 256 KB of SRAM for cache memorysupport The SRAM chip should be 8Kx8 bit or 32Kx8 bit The TAG RAM is for addressing code or data from main memory to Cache memory The table below lists all the possible cache size selections TAG RAM DATA
19. ite Option DRAM Type DRAM Wait State s Keyboard Clock Select AT Clock Select IO Recovery Time Hold PD Bus Refresh Cycle Coprocessor Ready Check ELBA Signal Non Cacheable Block1 Enable Non Cacheable Block I Size Non Cacheable Block Base Non Cacheable Block 2 Enable Non Cacheable Block 2 Size Non Cacheable Block 2 Base Da ESC Exit gt Sel Ctri Pu Pd Modify F1 Help F5 Old Values F6 BIOS Setup Defaults F7 Power On Defaults Enabled Memory Remapping 3 2 2 2 F Segment Shadow RAM 2 W S E Segment Shadow RAM FastPage COOO C3FF Shadow RAM 2 WS C400 C7FF Shadow RAM CPUCLK 4 16 BIT DMA WAIT STATES CPUCLK 4 8 BIT DMA WAIT STATES 5 3 BCLK 1 2T Slow Delay 1T in T2 Disabled 4MB OKB Disabled 16MB OKB Enabled Enabled Disabled Enabled Enabled 1 W S 1 W S Figure 4 5 The Advanced Chipset Setup R Auto Config Function F2 F3 Color If this function is enabled it is no use about the under list function AUTO e Cache Read Option e Cache Write Option e DRAM Type e DRAM Wait State s e Hold PD Bus for DMA Master e Keyboard Clock Select e AT Clock Select e IO Recovery Time of ISA PCB If disabled user selected values for above parameters will be used The available options are listed below e Disabled e Enabled 4 9 UC4913 User s Manual B Cache Read Option Due to constraint for technology speed of cur
20. ncountered during these tests there will be either a few short beeps or an error displayed on the monitor If the error occurs before the display device is initialized the system reports the error with several short beeps If the error is FATAL the system halts after reporting the FATAL error If the error is NON FATAL the process continues after reporting the error 4 7 1 Fatal Errors Through Beeps These errors are conveyed through a number of beeps __ Beep Count Meaning DRAM Refresh Failure Base 64 KB RAM Failure System Timer Failure Processor Failure Keyboard Controller GATE A20 Error Virtual Mode Exception Error ROM BIOS Checksum Failure 4 7 2 Non Fatal Errors Through Beeps These errors are conveyed as one long beep followed by several short beeps Beep Count Meaning Conventional and Extended Memory Test Failure Display Test and Vertical and Horizontal Retrace Test Failure 4 15 UC4913 User s Manual 4 7 3 Fatal Errors Shown in Display When these errors are displayed the screen is cleared and the error message display is followed by a line saying SYSTEM HALTED L S SOY eg 3S CMOS INOPERATIONAL indicates failure of CMOS shutdown register test 8042 GATE A20 ERROR error in getting into protected mode INVALID SWITCH MEMORY FAILURE DMA ERROR DMA controller page register test tailed DMA 1 ERROR DMA Unit register test failed DMA 2 ERROR DMA Unit 2 register test failed
21. ponsibility is assumed for inaccuracies The information contained in this document is subject to change without notice Contact your dealer for warranty details Trademarks All brand and product names which appear in this manual may be trademarks or registered trademarks of their repective companies B CONTENTS CHAPTER 1 INTRODUCTION 1 1 General Specifications and Features CHAPTER 2 MEMORY CONFIGURATION Zeb System MeMOLy 2 s64 aew oiscid aa aoe 2 1 1 DRAM Module Insertion 2 1 2 DRAM Module Removal 2 2 Cache Memory Subsystem CHAPTER 3 JUMPER SETTINGS AND CONNECTORS SA Jumper Settings ccuxsiun deena 3 2 Connectors R Ra R a N niaaa CHAPTER 4 BUILT IN BIOS SETUP PROGRAM 4 1 Setup Summary 0 4 A2 BIOS SEUD ord ate Go whe eae Rae aes 4 2 1 When Should You Run Setup 4 2 2 How to Recall the Setup Program 4 2 3 Running the SETUP Program 4 3 Running the Standard CMOS Setup 4 4 Running the Advanced CMOS Setup 4 5 Running the Advanced Chipset Setup 4 6 Using the Change Password Setup 4 7 BIOS Errors and Messages 4 7 1 Fatal Errors Through Beeps 4 7 2 Non Fatal Errors Through Beeps 1 CONTENTS 2 CONTENTS 4 7 3 4 7 4 4 7 5 4 7 6 Fatal Errors Shown in Display 4 16 Non Fatal Errors In Display 4 16 Errors With Setup Option x sss s s e sse 4 16 Errors Without Setup Option 6
22. rently available SRAM may not be high enough to catch up with the speed of the CPU which means that at every step of program execution the CPU must wait for the SRAM to respond This option determines the number of cycle times to be inserted when CPU read data to SRAM Moreover the setting depends on the speed of the CPU and SRAM If the CPU is of high speed the timing of SRAM processing data needs an extension except for some SRAMs that can be high enough to catch up with the speed of CPU The available options are as follows e 2 1 1 1 e 3 1 1 1 3 2 2 2 B Cache Write Option The setting of Cache Write Hit Wait State makes no difference from that of Cache Read Hit Burst It is important to check your speed of the CPU amp SRAM before you change the default value The options are available as follows OWS e 1 WS e 2ws R DRAM Type The available options are listed below e Fast Page e Page Mode R DRAM Wait State s This option determines the number of wait states to be inserted when the CPU writes data into the local DRAM The available options are as follows e OWS e 2ws IWS 4 10 Built in BIOS Setup Program B Keyboard Clock Select The available options are listed below e CPUCLK 6 50 MHz is recommended e CPUCLK 5 e CPUCLK 4 33 MHz is recommended e CPUCLK 3 25 MHz is recommended e CPUCLK12 16 20 MHz is recommended 9 5 MHz 7 2 MHz R AT Clock Selection The AT Clock is an outpu
23. rom the Setup main menu and press lt Enter gt 1 If the CMOS is bad or if this option has never been used the user is asked to enter new password The screen will display the following message Enter NEW Password If you want to disable the password function you can press lt Enter gt key to return to the Main Setup menu 2 If the CMOS is good or if this option has been used to enter the password the user is asked for the password stored in the CMOS The screen will display the following message Enter Current Password Enter the correct password and continue to change the password 3 After pressing the current password you can change the password stored in the CMOS The password can be at most 6 characters long To change the password please follow the steps below Enter NEW as E Note If you want to disable the pass word function you can press pe oe oe lt Enter gt key in this option The password prompt will not appear when the system is pow ered on Password Now Enabled Press lt Enter gt and return to main menu Built in BIOS Setup Program 4 7 BIOS Errors and Messages After entering setup choices the system will reboot The setup summary and system information will appear on screen along with messages These may include ERROR messages concerning the system or setup AM1 BIOS performs various diagnostic tests at the time the system is turned on Whenever an error is e
24. sing speed You can change the speed during operation while you are working with your application program Pq fe Z ae High Speed AA ra E Ctrl Alt Low speed Ctrl Alt 4 means one must press the keys simultaneously CAT
25. t clock for the I O channel This field is used to specify the I O BUS clock source used by the system The user does not need to change this setting The available options are listed below CPUCLK 8 e CPUCLK 6 50 MHz is recommended CPUCLK 5 e CPUCLK 4 33 MHz is recommended e CPUCLK 3 25 MHz is recommended e CPUCLK 2 16 20 MHz is recommended R I O Recovery Time Delay This field is used to specify the I O command recovery time except for some add on cards which cannot work properly It is recommended to set this option at low value to enhance the I O performance E Hold PD Bus The available options are listed below 1 2T 2 3T R Refresh Cycle The available options are listed below e Slow e Fast B CoProcessor Ready The available options are listed below e Delay TT e No Delay UC491 3 User s Manual B Check ELBA Signal The available options are listed below inTl s in T2 Default B Non Cacheable Block1 Block2 Enable If this function is disabled the setting of Non Cacheable Block 1 Block 2 Size and Non Cacheable Block I Block 2 Base will be invalid Mi Non Cacheable Block Block 2 Size For some special I O cards which need to use system memroy you should reserve some memory space for use The size of the block I block 2 can be as samll as 16KB 64KB or as large as 4MB 16MB The address of the block I block 2 is a mulitiple number of its size The options of Non Cacheable Blo
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