Table of Contents
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1. Introduction....................................................................... 1
1.1 Preface.................................................................. 1
1.2 Key Features.......................................................... 1
1.3 Hardware Specifications..........................................2
1.4 Software Specifications.......................................... 2
1.5 Environment........................................................... 3
2. Board Installation.............................................................. 4
2.1 Unpacking.............................................................. 4
2.2 Installation.............................................................. 5
3. S1461/6 On Board Resource Setting................................ 6
3.1 S1466 Board Layout & Jumper Location Rev 03....... 6
3.2 Quick Reference for Jumpers(S1466) Rev 03........... 7
3.3 S1466 Board Layout & Jumper Location Rev 02....... 9
3.4 Quick Reference for Jumpers(S1466) Rev 02........... 1 0
3.5 S1461 Board Layout & Jumper Location.................. 1 2
3.6 Quick Reference for Jumpers(S1461)...................... 1 3
3.7 S1463 Board Layout & Jumper Location.................. 1 5
3.8 Quick Reference for Jumpers(S1463).......................1 6
3.9 DRAM Installation..................................................1 8
3.10 CPU Installation....................................................1 9
3.11 Understanding The Different Clock Speeds............. 2 0
3.12 Upgrading Cache Memory..................................... 2 1
3.13 CMOS RTC..........................................................2 2
3.14 Speaker Connector Installation............................... 2 2
3.15 Turbo Switch.........................................................2 2
3.16 Turbo LED Connector Installation.......................... 2 3
3.18 Flash EPROM Jumpers......................................... 2 3
3.19 Hardware Password & CMOS Reset.....................2 3
3.20 Peripheral Device Installation.................................2 4
3.21 Turbo/Non-Turbo hotkeys...................................... 2 4
3.22 Connecting The Power Supply...............................2 5
4. BIOS Configuration...........................................................27
4.1 Entering Setup....................................................... 2 7
4.2 Control Keys......................................................... 2 8
4.3 Getting Help........................................................... 2 9
4.4 The Main Menu...................................................... 2 9
4.5 Standard CMOS Setup Menu...................................3 1
4.6 BIOS Features Setup.............................................. 3 4
4.7 Chipset Features Setup............................................ 3 7
4.7.1 Power Management Setup........................ 3 9
4.8 PCI Slot Configuration.............................................4 1
4.9 Load Setup Defaults................................................4 3
Table Of Contents
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Summary of Contents for TYAN TITAN I
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Page 1: Table Of Contents
Table Of Contents 1. Introduction............... 1 1.1 Preface..............1 1.2 Key Features............1 1.3 Hardware Specifications..........2 1.4 Software Specifications.......... 2 1.5 Environment............3 2. Board Installation.............. 4 2.1 Unpacking.............. 4 2.2 Installation.............. 5 3. S1461/6 On Board Resource Setting........ 6 3.1 S1466 Board Layout &... - Page 2 4.10 Password Setting...........4 3 4.11 IDE HDD Auto Detection........4 5 4.12 Save & Exit Setup..........4 5 4.13 Keyboard Setting Functions........4 6 5.AMI WinBIOS..............47 5.1 Standard Setup Options........... 4 7 5.2 Advanced Setup............. 4 8 5.3 Advanced Chipset..........5 1 5.4 Power Management..........5 3 5.5 Utility..............
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Page 3: Introduction
1. Introduction 1.1 Preface The S1461/3/6 is an Intel Triton chipset based Pentium PC/A T mainboard. W ith support for 75 thru 166MHz CPU, PCI local bus, and ISA bus, it can be used in the fastest PC/A T systems. The S1461and S1463 use standard SRAM and the S1466 comes with synchronous pipeline burst-mode SRAM for better system performance. -
Page 4: Hardware Specifications
1.3 Hardware Specifications * CPU -3.3V Pentium 75 thru 166 MHz CPU -Pentium Overdrive Processor (Socket 7) * Coprocessor -Included in Pentium CPU. * Speed -50/60/66 MHz System Bus and 25/30/33 MHz PCI Bus speed. -7.5/8.33 MHz ISA Bus speed. -H/W and S/W speed switchable function (Cache or non Cache). -
Page 5: Environment
1.5 Environment Ambient Temperature 0 to +50 C (operating) Relative Humidity 0 to +85% (operating) Altitude 0 to 10,000 feet (operating) V ibration 0 to 1,000 Hz V oltage 4.9 to 5.2 V S1461/6-001-01... -
Page 6: Board Installation
2. Board Installation 2.1 Unpacking The mainboard package should contain the following: * S1461/3/6 Mainboard * Two IDE 40 pin cables * User's Manual The mainboard contains sensitive electric components which can be easily damaged by static electricity, so the mainboard should be left in its original packaging until it is ready to be installed. -
Page 7: Installation
2.2 Installation Y ou are now ready to install your mainboard. The mounting hole pattern of the S1461/S1463/S1466 matches the IBM-A T system board spec. It is assumed that the chassis is designed for a standard IBM XT/A T mainboard. Place the chassis on the anti-static mat and remove the cover. - Page 8 3. On Board Resource Setting Figure 3.1 S1466 Board Layout Rev 03 Keyboard KB CTR BIOS PWR CON. 5V AMI/AWARD 82437FX P i n 1 82438FX 82438FX 82371FB Synchronous SRAM P54C Heat Sink PCB Rev 03 J15 CPU Speed Cache Size 75 MHz 90 MHz 256KB...
- Page 9 3.2Quick Reference For Jumpers & Connectors (S1466 rev 03) (refer Fig. 3.1) * : 5V Power Connector Power Good Signal 2,10,11,12 VCC (+5V) +12V -12V 5,6,7,8 * J17: Reset Connector "Open" for normal operation "Closed" for hardware reset * J1,J23,J22: L2 Cache Size Selection Cache Size: J23 J22 256kb...
- Page 10 * J21: Turbo LED Connector LED cathode (-) LED anode (+) * J18, J19,J15,J14: System Speed Selection J18 J19 CPU Speed Off On On On 166MHz Pentium On Off On On 150MHz Pentium On On Off On 150MHz Pentium Off On On Off 133MHz Pentium On Off...
- Page 11 3.3 On Board Resource Setting Keyboard S1466 Board Layout Rev 02 KB CTR BIOS PWR CON. 5V AMI/AWARD 82437FX P i n 1 82438FX 82438FX 82371FB Synchronous SRAM P54C Heat Sink PCB Rev 02 Cache Size J15 CPU Speed 256KB 75 MHz 512KB 90 MHz...
- Page 12 3.4Quick Reference For Jumpers & Connectors (S1466 rev 02) * : 5V Power Connector Power Good Signal 2,10,11,12 VCC (+5V) +12V -12V 5,6,7,8 * J17: Reset Connector "Open" for normal operation "Closed" for hardware reset * J1,J23,J22: L2 Cache Size Selection Cache Size: J23 J22 256kb...
- Page 13 * J21: Turbo LED Connector LED cathode (-) LED anode (+) * J18, J19,J15,J14: System Speed Selection J18 J19 CPU Speed Off On On On 166MHz Pentium On Off On On 150MHz Pentium On On Off On 150MHz Pentium Off On On Off 133MHz Pentium On Off...
- Page 14 Figure 3.5S1461 Board Layout Keyboard BIOS PWR CON. 5V AMI/AWARD 8 2 4 3 8 F X P i n 1 82438FX 82438FX 82371FB Asynchronous SRAM P54C Heat Sink J24 CPU Speed 75 MHz Cache Size 90 MHz 256KB Off 100 MHz 512KB Off 120 MHz Off 133 MHz...
- Page 15 3.6Quick Reference For Jumpers & Connectors (S1461) * : 5V Power Connector Power Good Signal 2,10,11,12 VCC (+5V) +12V -12V 5,6,7,8 * J18: Reset Connector "Open" for normal operation "Closed" for hardware reset * J6,J22,J21: L2 Cache Size Selection Cache Size: J22 J21 256KB 2-3 On Off...
- Page 16 * J23: Turbo LED Connector LED cathode (-) LED anode (+) * J15, J16,J20: System Speed Selection CPU Speed On 166MHz Pentium Off On On 150MHz Pentium Off On 150MHz Pentium Off 133MHz Pentium Off On Off 120MHz Pentium Off Off 100MHz Pentium Off On Off Off 90MHz Pentium Off Off 75MHz Pentium.
- Page 17 Figure 3.7 S1463 Board Layout Rev02 Keyboard BIOS PWR CON. 5V AMI/AWARD 8 2 4 3 8 F X P i n 1 82438FX 82438FX 82371FB Asynchronous SRAM P54C Heat Sink J14: Reset J25: Keylock J15: Turbo-Switch J26: Speaker J21 Cache Size J18: IDE LED 2-3 Off 256KB...
- Page 18 3.8 Quick Reference For Jumpers & Connectors (S1463) * : 5V Power Connector Power Good Signal 2,10,11,12 VCC (+5V) +12V -12V 5,6,7,8 * J14: Reset Connector "Open" for normal operation "Closed" for hardware reset * J4,J20,J21: L2 Cache Size Selection Cache Size: J20 J21 256KB...
- Page 19 * J24: Turbo LED Connector LED cathode (-) LED anode (+) * J16, J17,J19,27,28,23,34: System Speed Selection J16 J17 J19 J23 CPU Speed On Off Off 75MHz Off On Off Off 90MHz Off Off Off 100MHz Off On On 120MHz Off On 133MHz On On...
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Page 20: Dram Installation
3.9 DRAM Installation The mainboard can be installed with 1/2/4/8/16/32 MB 72 pin 60 or 70 ns Fast Page or EDO (Extended Data Out)DRAM SIMM modules. The DRAM memory system consists of 2 banks (0-1). Each bank requires 2 SIMM modules to achieve 64 bit bus transfer and proper operation. The total memory size can be from 4MB to 128MB. -
Page 21: Cpu Installation
3.10 CPU Installation Several types of CPUs (75 thru 166 MHz) can be used on S1461/3/6. Please refer to the previous pages for the correct CPU jumper settings for your board. * The CPU is a sensitive electronic component and it can be easily damaged by static electricity. -
Page 22: Understanding The Different Clock Speeds
3.11 Understanding The Different Clock Speeds When rating Pentium CPU clock speeds, remember it is determind by their internal frequency. The following chart shows the different CPU, mainboard and PCI frequencies. As you may notice, all the Intel Pentium CPUs use an internal clock multiplier(x3, x2.5, x2 or x1.5 Motherboard speed). -
Page 23: Upgrading Cache Memory
3.12 Upgrading Cache Memory The S1461/3 main board comes standard with a 256KB 2nd level cache. It uses 8pcs of 32K*8 SRAM's Y ou can upgrade the cache to 512KB with 64K * 8 SRAM to improve system performance. NOTICE: The 64K*8 SRAM chip is longer in length than the 32K*8 chip. -
Page 24: Cmos Rtc
For the S1466, the synchronous SRAM can be upgraded only in boards that use sockets. A special tool is required to unplug SRAM chips from the PLCC sockets. The table below shows the configuration sizes of the SRAM: (All SRAM must be 10ns or faster) SRAM Cache Size Chip Type and Qty J1 J23 J22 256KB... -
Page 25: Turbo Led Connector Installation
3.16 Turbo LED Connector Installation The TURBO LED on the front case panel can indicate the current speed status of the system. The TURBO LED connector should be installed to J21 for the S1466, J24 for the S1463 or J23 for the S1461 in the correct direction 3.17 Hardware Reset Switch Connector Installation The RESET switch on your cases' display panel provides users with the... -
Page 26: Peripheral Device Installation
3.20 Peripheral Device Installation After all the jumpers on the mainboard have been set, the it can be mounted into the case. Then proceede in installing the I/O controller, display con- troller, and any other peripheral devices. If a PCI-Bus interface card is to be installed in the system, any one of the four PCI-Bus slots can support either a Master or a Slave device. -
Page 27: Connecting The Power Supply
3.22 Connecting the Power Supply The system power supply connectors on the mainboard is for a 5 volt power supply. Incorrect installation of the power supply could result in serious damage to the system board and connected peripherals. Pin 1 Good Power Signal 5 volt +12V... - Page 28 Align the plastic guide pins on the lead cables to their receptacles on the mainboard. Y ou may need to hold the lead at an angle to line it up.Once you have the guide pins aligned, press the lead connector so that the plastic clips on the lead snap into place and secure the lead to the connec- tor.
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Page 29: Bios Configuration
4. BIOS Configuration A w ard's BIOS has a built in setup program that allows the user to modify the basic system configuration. This type of information is stored in the battery-backed CMOS SRAM. Entering incorrect information or for- getting your password can lock you out of your system.(refer to 3.15 for resetting of CMOS) 4.1. -
Page 30: Control Keys
4.2. Control Keys PgUp key Increases the numeric value or make changes PgDn key Decreases the numeric value or make changes F1 key General help, only for Status Page Setup menu and Option Page Setup Menu F2 key Change color from a total of 16 colors F3 key Calendar, only for Status Page Setup Menu F4 key... -
Page 31: Getting Help
4.3. Getting Help 4.3.1. Main Menu The on-line description of the highlighted setup function is displayed at the bottom of the screen. 4.3.2. Setup Page menu/Option Page Setup Menu Press F1 to pop up a small help window that describes the appropriate keys to use and the possible selections for the highlighted items. -
Page 32: Bios Features Setup
* Standard CMOS setup This setup page includes all the items in a standard compatible BIOS. BIOS features setup This setup page includes all of the enhanced features of A w ard's BIOS. * Chipset features setup This setup page includes all the items of the Intel Triton chipset features. * Power Management Setup Change, set, or disable system power management options * PCI slot configuration... - Page 33 4.5. Standard CMOS Setup Menu The items in Standard CMOS Setup Menu (Figure 4.2) are divided into 9 categories. Each category includes one or more setup items. Use the arrows to highlight the item and use the <PgUp> or <PgDn> keys to select the value you want for each item.
- Page 34 * Primary/Secondary Drive type This category identifies the types of hard disk drives that have been in- stalled in the computer. There are 46 predefined types and a user definable type. Press PgUp or PgDn to select a numbered hard disk type or type a number and press <Enter>.
- Page 35 * Video This category detects the type of graphics adapter used for the primary display system. It must match your video display card and monitor. Al- though secondary monitors are supported, you do not have to select that type in setup. EGA/VGA Enhanced Graphics Adapter/V ideo Graphics Array.
- Page 36 Expanded Memory Expanded Memory (EMS) defines a 64 K page frame in the area between 640K and 1Mb containing four 16K pages that are windows into the EMS memory. Programs issue requests to the EMS manager to switch the page to any part of EMS memory.
- Page 37 * Virus warning This category flashes on screen. During and after the system boot up, any attempt to write to the boot sector or the partition table of the hard disk drive will halt the system and the following error message will appear.
- Page 38 * Boot Up Floppy Seek During POST, the BIOS will determine if the floppy disk drive installed is 40 or 80 tracks. 360K type is 40 tracks while 720K, 1.2M and 1.44M are all 80 tracks. Default value is Enabled Enabled BIOS searches for floppy disk drive to determind if it is 40 or 80 tracks.
- Page 39 * Security Option This category allows you to limit access to the system setup, or just setup. Default value is Setup System The system will not boot and access to Setup will be denied if the correct password is not entered at the prompt Setup The system will boot, but access to setup will be denied if the password is not entered at the prompt...
- Page 40 * DRAM RAS# Precharge Time: This can be set to either 3 or 4. Default value is 4. * DRAM R/W Leadoff Timing This option depends on the systems DRAM speed. Use 7/5 for 60ns and 8/6 for 70ns DRAM. Default is 8/6. * DRAM RAS to CAS Delay This can be set to 2 or 3.
- Page 41 4.7.1 Power Management Setup ROM ISA BIOS POWER MANAGEMENT SETUP A W ARD SOFTWARE, INC Power Management :Disabled IRQ3 (Com2) :Off PM Control By APM IRQ4 (Com1) :Off V ideo Off Method :Blank Screen IRQ5 (LPT2) :Off IRQ6 (Floppy Disk) :Off Doze Mode :Disabled...
- Page 42 Doze Mode Defines the continous idle time before the system enters Doze mode. Standby Mode Defines the continous idle time before the system enters Standby mode. Power Down Activities Defines the the activities that can cause the PM timers to reload. (Break- ing out of PM Mode) S1461/6-001-01...
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Page 43: Pci Slot Configuration
4.8 PCI Slot Configuration ROM ISA BIOS PCI SLOT CONFIGURA TION A W ARD SOFTWARE, INC. Slot1 Using INT# : AUTO Slot2 Using INT#: AUTO Slot3 Using INT#: AUTO Slot4 Using INT#: AUTO 1st A vailable IRQ#: 2nd A vailable IRQ#: 3rd A vailable IRQ# 4th A vailable IRQ# PCI IRQ Actived By:... - Page 44 *1st Available IRQ# *2nd Available IRQ# *3rd Available IRQ# *4th Available IRQ# Select four available IRQs assignments to PCI slots INT *PCI IRQ Actived By: Select the PCI IRQ Active scheme either LEVEL or EDGE. Default value is LEVEL. *PCI IDE IRQ Map To: Select the IDE IRQ Map to ISA IRQ#.
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Page 45: Load Setup Defaults
4.9. LOAD SETUP DEFAULTS ROM ISA BIOS CMOS SETUP UTILITY A W ARD SOFTW ARE INC. STANDARD CMOS SETUP PASSWORD SETTING BIOS FEA TURES SETUP IDE HDD AUTO DETECTION CHIPSET FEA TURES SETUP DAVE & EXIT SETUP Load Setup Defaults (Y/N)? N PCI SLOT configuration EXIT WITH OUT SA V ING LOAD SETUP DEFAULTS... - Page 46 ROM ISA BIOS CMOS SETUP UTILITY A W ARD SOFTWARE, INC. STANDARD CMOS SETUP PASSWORD SETTING BIOS FEA TURES SETUP IDE HDD AUTO DETECTION CHIPSET FEA TURES SETUP DAVE & EXIT SETUP Enter Password PCI SLOT CONFIGURA TION EXIT WITH OUT SA V ING LOAD SETUP DEFAULTS ESC : Save &...
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Page 47: Ide Hdd Auto Detection
4.11. IDE HDD AUTO DETECTION ROM ISA BIOS CMOS SETUP UTILITY A W ARD SOFTWARE, INC. CYLS. HEAD PRECOMP LANZONE SECTORS Drive C: (202 Mb) 65535 Do you want to accept this as drive C (Y/N)? Esc:Skip Type "Y" to accept the H.D.D parameter reported by BIOS. Type "N" to keep the old H.D.D parameter info. -
Page 48: Keyboard Setting Functions
Type "Y" and you will quit the Setup Utility and save the user setup values to RTC CMOS SRAM. Type "N" to return to Setup Utility. 4.13 KEYBOARD SETTING FUNCTION After booting the O.S., there are some special functions used by the key- board as follows: "CTRL_ALT_DEL"... -
Page 49: Ami Winbios
5.0 AMI WINBIOS The AMI WINBIOS is based on a Graphical User Interface that enables the user to access all of the BIOS setup options with either a mouse or keyboard. Y ou can enter the BIOS setup by pressing on the "DEL" key during the memory test/count. -
Page 50: Advanced Setup
Primary Master Primary Slave Select one of these hard disk drive Icons to configure the drive named in the option. WINBIOS supports up to four IDE hard disk drives: the primary master, primary slave, secondary master and secondary slave. If the hard disk drive is an IDE drive, select DETECT PRIMARY or DETECT SLAVE from the Utility Setup Option Section of the WINBIOS Setup Main Menu to have WINBIOS automatically detect the IDE drive parameters and re-... - Page 51 Primary Display Configures the type of monitor attached to the computer. The Optimal and Fail-Safe default settings are VGA/EGA. Above 1MB Memory Test When this option is enabled, the system will test the entire memory pool during the Power On Self Test(POST). If it is disabled, the system will only count the amount of available memory without testing it.
- Page 52 Password Checking This option enables the password check option everytime the system boots or the user runs W inBIOS Setup. If Always is chosen, a user password prompt appears everytime the computer is powered on. If Setup is chosen, the password prompt appears if W inBIOS Setup is executed.
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Page 53: Advanced Chipset
Onboard PCI IDE Sec. PIO Mode This option lets you select the PIO Mode for the IDE HDD that is attached to your secondary controller. Choices are from mode 0 thru mode 4. If you are not sure which mode your drive supports, use the Auto option. - Page 54 8 bit I/O Recovery Time 16 bit I/O Recovery Time These options set the 8 bit and 16 bit I/O recovery time in the chipset. I/O devices may not function correctly if two back to back I/O writes occur too close together. These options increase the delay between back to back I/O instructions.
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Page 55: Power Management
5.4 Power Management Advanced Power Management This option enables or disables power management. The default is disabled. Standby to Suspend Timeout V alue This option indicates the time before standby and suspend power saving modes will occur. The options are from disabled thru 255 minutes. The default is disabled. -
Page 56: Utility
5.5 Utility Detect Master/Detect Slave These options, when invoked will enable the CMOS to query the IDE drive firmware for its cylinder, head and sector parameters. Color Set This option lets you select the color scheme of the W inBIOS setup screen. -
Page 57: Flash Writer Utility
6.0 Flash Writer Utility Y ou can upgrade the BIOS of your mainboard by using a "Flash Memory W riter"(FM W ) utility . This utility can be downloaded from the factory's BBS(Consult your system vendor for the phone #). The system BIOS is stored on a 'flash' EPROM ROM chip on the mainboard which can be erased and reprogrammed by the FMW . - Page 58 To reprogram the System BIOS, you must first do the following: 1. Check jumpers J7, J8, and J9. For boards that use the 5 V olt Flash chip, J7 will be on pins 1-2 and pin 3 will be cut. No jumpers changes are needed to flash a new BIOS on these boards.
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Page 59: The Flash Memory W Riter Utility Screen
Once you have satisfied the two requirements mentioned above, you can run FMW . Y ou can copy the contents of the “Flash” directory to your hard drive, or you can run the utility from a backupof the support floppy disk. Make sure the new BIOS file is in thesam e directory as the FM W utility . -
Page 60: At Technical Information
7.0 AT TECHNICAL INFORMATION 7.1 I/O BUS CONNECTOR PIN OUT 7.1.1 ISA SLOT PIN OUT -I/O CH CHK -MEMC16 SBHE SD07 -I/OCS16 LA23 RESET SD06 IRQ10 LA22 SD05 IRQ11 LA21 IRQ9 SD04 IRQ12 LA20 SD03 IRQ15 LA19 DRQ2 SD02 IRQ14 LA18 -12V SD01... -
Page 61: Pci-Bus Slot Pin Out
7.1.2 PCI-BUS SLOT PIN OUT -12V +12V INT#A INTB# INT#C INTD# PST#1 PST#2 RST# GNT# REQ# AD_31 AD_30 AD_29 AD_28 AD_27 AD_26 AD_25 AD_24 CBE#3 IDSEL AD_23 AD_22 AD_21 AD_20 AD_19 AD_18 AD_17 AD_16 CEB#2 FRAME# IRDY# STOP# DEVSEL# SDONE LOCK# SBO# PERR#... -
Page 62: Timer & Dma Channel Map
7.2. TIMER & DMA CHANNEL MAP TIMER MAP: TIMER Channel-0 system timer interrupt TIMER Channel-1 DRAM REFRESH request TIMER Channel-2 SPEAKER tone generator DMA CHANNELS: DMA Channel-0 Available DMA Channel-1 IBM SDLC DMA Channel-2 FLOPPY DISK adapter DMA Channel-3 Available DMA Channel-4 Cascade for DMA controller 1 DMA Channel-5 Available DMA Channel-6 Available... -
Page 63: Rtc & Cmos Ram Map
7.4 RTC & CMOS RAM MAP RTC & CMOS: Seconds Seconds alarm Minutes Minutes alarm Hours Hours alarm Days of the week Days of the month Month Y ear Status register A Status register B Status register C Status register D Diagnostic status byte Shutdown byte Floppy DISK drive type byte... -
Page 64: Appendix A. Post Codes
Appendix A: Post Codes ISA POST codes are typically output to port address 80h ( Award BIOS) POST Name OEM specific-Cache control Turn off Processor Status (1 FLAGS) verification. Chipset cache Processor Test 1 Test the following processor status flags; carry, zero, sign, overflow . - Page 65 Test DMA memory Test DMA controller controller 1 Test DMA Page Test DMA page Registers registers 12-13 reserved Test timer Test 8254 timer 0 countner 2 counter 2 Test 8259-1 V erify 8259 channel 1 masked interrupts Mask Test 8259-2 V erify 8259 channel 2 masked interrupts Mask Test Stuck 8259...
- Page 66 Manufacturing Reboot if manufacturing POST loop pin is set. Otherwise POST loop or display any messages(i.e. non fatal errors that were detected display messages during POST) and enter setup Security check Ask password security (optional) Write CMOS Write all CMOS values back to RAM and clear screen PRE-boot enable Enable parity checker, enable NMI and enable cache before boot...