American Megatrends MAN-772 manual Programming the Flash ROM, Programming the Flash Eprom

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3 Programming the Flash ROM

All versions of the Apollo IV motherboard use Flash EPROM to store the system BIOS. The advantage of Flash EPROM is the EPROM chip does not have to be replaced to update the BIOS. The end user can actually reprogram the BIOS, using a ROM file supplied by American Megatrends.

Programming the Flash EPROM

Step

Action

1Turn power off. Make sure the computer has a working speaker.

2Insert the floppy disk with the S772P.ROM file in drive A:.

3Before DOS boots, press and hold down the <Ctrl> and <Home> keys to reprogram the Flash EPROM-based AMIBIOS. The bootblock code immediately reads the A: drive, looking for the new BIOS information.

4When the flash ROM has successfully been programmed, the computer will reboot.

Bootblock BIOS Actions When you reprogram from system boot, the bootblock BIOS code:

Reads S772P.ROM from the root directory of the floppy disk in drive A:.

Erases the Flash EPROM.

Programs the Flash EPROM with the data read from the floppy disk in drive A:.

Generates a CPU reset, rebooting the computer.

The bootblock part of the Flash EPROM is not programmed. Should you inadvertently open the disk drive door or turn power off to the computer while programming the Flash EPROM, the bootblock will be unaffected. Simply turn power back on and begin the Flash ROM programming process again.

Cont’d

Chapter 2 WINBIOS Setup

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Contents Apollo IV Pentium PCI ISA MotherboardGuide Ii Apollo IV PCI Pentium ISA Motherboard User’s Guide Phone Number Characteristics PrefaceTechnical Support Static Electricity Packing ListCPU Manufacturer Supported CPU Speeds OverviewChipset Type of System Supported System Memory Socket Overview Ultra DMA/33 Fast ATAFloppy Parallel PortCPU External Clock Frequency PCI Expansion Slot Frequency MouseInfrared DMIMotherboard Height Restrictions Apollo IV DimensionsStep Action Installation StepsApollo IV Motherboard Layout Step Action Unpack the MotherboardSet Jumpers PWR1 Setting DescriptionFlash ROM Type Avoid Static ElectricityExternal Configure CPUP54C P55C ForP54C Summary of Jumper Setting for Intel Pentium CPUsSummary of Jumper Setting for AMD K5 and K6 CPUs Value Description AMD-K6 Step Action Supported System Memory Configurations Install MemoryType of System Memory Supported System Memory Socket Total SystemMemory Display Should supply these parts Install the MotherboardInstall Motherboard Attach Cables ConnectorAttach Cables Pin Description Power Connector PinoutPin MotherboardPin Description Connector Signal Descriptions Pins 12 13 14Connect Onboard I/O Pin Description Signal DescriptionSLCTIN# Pin Signal DescriptionAttach Floppy Drive Floppy Connector Pinout Twist in Floppy CablePin Use Attach IDE Drive Attach IDE Drive Primary Pinout The Primary IDE pinout is Secondary IDE Pinout The Secondary pinout is Test and Configure Page Winbios Setup Using a Mouse with Winbios Setup Using the Keyboard with Winbios SetupKeystroke Action Winbios Setup Menu Drive Type How to Configure Standard SetupParameter Description 65535 1223 152 MB Hard Disk Drive TypesSetting Description Advanced SetupAdvanced Setup Type of Armd Device Drive Emulation Configured Advanced Setup Disabled Chipset Setup Power Management Setup Power Management Setup PCI/PnP Setup Cont’dSnoop Bit Action DMA Channel Option Optimal Default Fail-Safe DefaultPrimary Prefetch Peripheral SetupIDE Secondary IRQ options Offboard PCI IDE Primary IRQPeripheral Setup EPP Version Setting DescriptionSecurity Amibios Password SupportChanging a Password Setting a PasswordAnti-Virus Utility Original OptimalFail-Safe Programming the Flash Eprom Programming the Flash ROMStep Expected behavior Programming the Flash ROMNumber of Beeps Description Code Description Bootblock Code Checkpoint Codes