American Megatrends Merlin manual

Title: HORZLOGO.EPS from CorelDRAW! Creator: CorelDRAW! CreationDate: Mon Nov 08 11:36:26 1993 Merlin PCI Pentium® Pro ISA Motherboard User's Guide MAN-735 4/16/96[...]

Merlin PCI Motherboard User’s Guide ii © Copyright 1996 American Megatrends, Inc. All rights reserved. American Megatrends, Inc. 6145F Northbelt Parkway Norcross, GA 30071 This publication contains proprietary information which is protected by copyright. No part of this publication may be reproduced, transcribed, stored in a retrieval system, tr[...]

Preface iii Table of Contents 1 Hardware Installation ............................................... 1 Merlin PCI Dimensions ................................ ................................ ............. 2 Merlin PCI Motherboard Layout ................................ ............................ 4 Step 1 Unpack the Motherboard ..................[...]

Merlin PCI Motherboard User’s Guide iv Preface To the OEM Thank you for purchasing the high perf ormance American Megatrends Merlin ISA motherboard. This product is a state of the art motherboard that includes the famous AMIBIOS. It is assumed that you have also licensed the rights to use the American Megatrends documentation for the American Meg[...]

Preface v American Megatrends BBS The American Megatrends BBS permits OEMs, VARs, and system integrators to access technical information about motherboard and BIOS products. Product Engineering Change Notices, Tech Tips, Technical Notes, and complete technical manuals are available. Data Transmission Rates The American Megatrends BBS automatically [...]

Merlin PCI Motherboard User’s Guide vi Packing List You should have received the following: • a Merlin PCI motherboard, • two serial cables, • one parallel cable, • a Warranty Card, and • the American Megatrends Merlin PCI Pentium Pro Motherboard User's Guide .[...]

Chapter 1 Hardware Installation 1 1 Hardware Installation Overview The American Megatrends Merlin PCI Pentium Pro ISA motherboard features include: • support for an Intel Pentium Pro CPU operating at 133, 150, 166, 180, 200 MHz or higher, • support for up to 512 MB of system memory, • parity checking or ECC, • interleaved memory, • PCI lo[...]

Merlin PCI Motherboard User’s Guide 2 Merlin PCI Dimensions The motherboard is approximately 8” by 10” (the standard baby AT size and mounting holes).[...]

Chapter 1 Hardware Installation 3 Installation Steps Step Action Turn to 1 Unpack the motherboard. Page 5 2 Configure the CPU. Page 6 Configure the CPU. Page 6 Select the CPU 3.3V Power Source Page 6 Select the CPU Voltage. Page 7 Select the CPU Speed. Page 7 Install the CPU. Page 10 3 Install memory. Page 12 Install System Memory. Page 12 4 Instal[...]

Merlin PCI Motherboard User’s Guide 4 Merlin PCI Motherboard Layout[...]

Chapter 1 Hardware Installation 5 Step 1 Unpack the Motherboard Step Action 1 Inspect the cardboard carton for obvious damage. If damaged, call 770-246 -8645. Leave the motherboard in its original packing. 2 Perform all unpacking and installation procedures on a ground-connected anti -static mat. Wear an anti -static wristband grounded at the same [...]

Merlin PCI Motherboard User’s Guide 6 Step 2 Configure CPU Jumpers J16, J19, J20, J24, AND J28 select the CPU type. See the drawing on page 4 for the jumper locations. Set the jumpers described below before installing a CPU. Important If you are not sure about the voltage specification for the CPU to be installed, call Intel to make sure that you[...]

Chapter 1 Hardware Installation 7 Step 2 Configure CPU, Continued CPU Voltage J16 is an 8-pin berg that sets the core CPU voltage. J16 is near the CPU, as shown below: Core CPU Voltage J16 Setting 3.5V Short Pins 1-2 Short Pins 3-4 Short Pins 5-6 Short Pins 7-8 3.4V Short Pins 1-2 Short Pins 3-4 Short Pins 5-6 3.3V (Factory Setting) Short Pins 1-2 [...]

Merlin PCI Motherboard User’s Guide 8 Step 2 Configure CPU, Continued Set CPU External Speed J19 and J20 set the external CPU speed, as follows: External CPU Speed J19 J20 50 MHz Shorted Shorted 60 MHz OPEN Shorted 66.66 MHz Shorted OPEN J28 CPU Clock Multiplier J28 sets the CPU clock multiplier as follows: Clock Multiplier J28 Pins 1-2 J28 Pins [...]

Chapter 1 Hardware Installation 9 Step 2 Configure CPU, Continued Connect CPU Fan J4 (shown below) is a two-pin berg that connects the fan on the CPU heat sink. All Pentium Pro CPUs are shipped with a heat sink and a CPU fan . As shown below, the wire from the CPU fan has two leads. The fan cable has a red lead and a black lead. Connect the Red lea[...]

Merlin PCI Motherboard User’s Guide 10 Step 2 Configure CPU, Continued Install CPU Install the CPU in the ZIF (zero insertion force) socket by performing the following steps. The CPU socket is near one edge of the motherboard, as shown on page 4 . Warning Improper CPU installation can damage the CPU and the motherboard. You must follow the proced[...]

Chapter 1 Hardware Installation 11 Step Action 2 Check for bent pins on the CPU. Gently straighten any bent pins with pliers. Place the CPU in the middle of the socket, as shown below. Make sure that pin 1 of the CPU is aligned with pin 1 of the socket. Make sure you are properly grounded while handling the CPU. 3 Complete installation by lifting t[...]

Merlin PCI Motherboard User’s Guide 12 Step 3 Install Memory System Memory There are four 32 -bit SIMM (Single Inline Memory Module) sockets. System memory must be populated one bank at a time. Each bank has two sockets. Bank0 includes U9 and U5. Bank1 includes U4 and U1. Each bank must be populated with the same type of SIMM. If a 4 MB SIMM is i[...]

Chapter 1 Hardware Installation 13 Step 3 Install Memory, Continued Select SIMMs SIMMs must meet the following specifications: Parameter Specification Page Mode FAST Refresh CAS before RAS t CAC ≤ 20 ns t RAC ≤ 80 ns t AA ≤ 45 ns t RP 70 ns t CPA ≤ 45 ns SIMM Part Numbers Type Manufacturer Part Number 1 MB x 36 Micron MT12D136M-7 “ Mitsub[...]

Merlin PCI Motherboard User’s Guide 14 Step 3 Install Memory, Continued Installing SIMMs The four SIMM sockets on the motherboard can be filled with either 1 MB x 32 (or 36), 2 MB x 32 (or 36), 4 MB x 32 (or 36), 8 MB x 32 (or 36), or 16 MB x 32 (or 36) SIMMs. Place the motherboard on an anti-static mat. With the component side of the SIMM facing[...]

Chapter 1 Hardware Installation 15 Step 4 Install the Motherboard The motherboard mounting hole pattern is the same as the mounting hole pattern on the standard baby AT motherboard. Standoffs and mounting screws are not supplied with the motherboard. The chassis manufacturer should supply these parts. Step Action 1 Place the chassis on an anti -sta[...]

Merlin PCI Motherboard User’s Guide 16 Step 4 Install Motherboard, Continued[...]

Chapter 1 Hardware Installation 17 Step 5 Attach Cables Connectors The Merlin PCI motherboard includes many connectors. Connection instructions, illustrations of connectors, and pinouts are supplied in the following pages. A list of all connectors described in this section follows: Connector Turn to Power supply connectors P1, P2, and P3 pages 18 t[...]

Merlin PCI Motherboard User’s Guide 18 Step 5 Attach Cables, Continued Connect Power Supply The power supply should match the physical configuration of the chassis. Make sure the power switch is off before assembly. Before attaching all components, make sure the proper voltage has been selected. Power supplies often can run on a wide range of vol[...]

Chapter 1 Hardware Installation 19 Step 5 Attach Cables, Continued Power Connector Keys The power connectors ar e keyed to prevent incorrect installation. The keys on the connector must be cut to fit on some power supplies, as shown below. P 1 R e m o v e K e y 3 R e m o v e K e y 6 P 2 P i n 1 P i n 1 P1 Pinout Pin Description 1 Power Good (Orange[...]

Merlin PCI Motherboard User’s Guide 20 Step 5 Attach Cables, Continued P3 Pinout P3 provides optional 3.3V power. Pin Description 1 Ground (Black wire) 2 Ground (Black wire) 3 -5 Volts (White wire) 4 3.3V 5 3.3V 6 3.3V Keyboard Connector T he keyboard connector (J8) is a six-pin DIN socket. The J5 pinout is shown below. The keyboard connector pos[...]

Chapter 1 Hardware Installation 21 Step 5 Attach Cables, Continued Connect Mouse Cable The mouse connector (J11 ) is a 10-pin berg. The mouse cable is the same as the serial cable in the Merlin PCI motherboard. Two serial cables are shipped with the motherboard. Use one of these cables for the mouse, or you can make your own cable using the followi[...]

Merlin PCI Motherboard User’s Guide 22 Step 5 Attach Cables, Continued J10 Green PC Power J10 is a two-pin berg that connects to a Green PC power supply. When the computer enters a power conserving state, a signal is sent from this berg to the power supply to permit the power supply to switch to a low power, high-efficiency mode. The + on Pin 2 i[...]

Chapter 1 Hardware Installation 23 Step 5 Attach Cables, Continued Keyboard Lock J37 is a five pin single -inline berg that is attached via a cable to the keyboard lock connector (or separate keyboard lock and Power LED connectors). The computer chassis may not include the keyboard lock and Power LED on a single connector. The keyboard lock allows [...]

Merlin PCI Motherboard User’s Guide 24 Step 5 Attach Cables, Continued Onboard Adapters The Merlin PCI motherboard has: • two serial ports (J12 and J13), • a parallel port (J1), • an IDE controller on the PCI bus. The primary IDE connector is J2. • The secondary IDE connector is J7. • a floppy controller (J6). The serial and parallel po[...]

Chapter 1 Hardware Installation 25 Step 5 Attach Cables, Continued J1 Parallel Port J1 is a 26-pin connector for a parallel port. The J1 pinout is shown below. Connect the 16-pin to DB25 cable provided with the motherboard to J6. The parallel port interface supports the standard Centronics-compatible, ECP (Extended Capabilities Port ), and EPP (Enh[...]

Merlin PCI Motherboard User’s Guide 26 Step 5 Attach Cables, Continued J6 Floppy J6 is a 34-pin dual-inline berg. Connect the cable from the floppy drive to J6, as shown below. The onboard floppy controller cannot be used if a hard disk card with a floppy controller is installed. Choose Standard Setup and Peripheral Setup to configure the floppy [...]

Chapter 1 Hardware Installation 27 Step 5 Attach Cables, Continued J6 Floppy Connector Pinout Pin Use Pin Use 1 GND 2 DENSE1 3 GND 4 N/C 5 GND 6 DRATE0 7 GND 8 -INDEX 9 GND 10 -MOTOR0 11 GND 12 -FDSEL1 13 GND 14 -FDSEL0 15 GND 16 -MOTOR1 17 GND 18 DIR 19 GND 20 - 21 GND 22 -WDATA 23 GND 24 -WGATE 25 GND 26 -TRK0 27 GND 28 -WRPROT 29 GND 30 -RDATA 3[...]

Merlin PCI Motherboard User’s Guide 28 Step 5 Attach Cables, Continued IDE Drives Attach the IDE drives in the following manner. Choose Peripheral Setup in WINBIOS Setup to enable the onboard IDE controller. Cont’d[...]

Chapter 1 Hardware Installation 29 Step 5 Attach Cables, Continued Attach IDE Cable to J2 J2 is the primary IDE (Integrated Drive Electronics) hard disk drive connector. Both the primary master and the primary slave IDE drives must be connected by cable to J2, as shown below. J2 is a 40-pin dual-inline berg that connects an IDE drive to the primary[...]

Merlin PCI Motherboard User’s Guide 30 Step 5 Attach Cables, Continued J2 Pinout The J2 pinout is: Pin Use Pin Use 1 -RESET 2 GND 3 DATA7 4 DATA8 5 DATA6 6 DATA9 7 DATA5 8 DATA10 9 DATA4 10 DATA11 11 DATA3 12 DATA12 13 DATA2 14 DATA13 15 DATA1 16 DATA14 17 DATA0 18 DATA15 19 GND 20 KEY (N/C) 21 -REQ 22 GND 23 -IOW 24 GND 25 -IOR 26 GND 27 IDERDY [...]

Chapter 1 Hardware Installation 31 Step 5 Attach Cables, Continued J7 Pinout The J7 pinout is: Pin Use Pin Use 1 -RESET 2 GND 3 DATA7 4 DATA8 5 DATA6 6 DATA9 7 DATA5 8 DATA10 9 DATA4 10 DATA11 11 DATA3 12 DATA12 13 DATA2 14 DATA13 15 DATA1 16 DATA14 17 DATA0 18 DATA15 19 GND 20 KEY (N/C) 21 -REQ 22 GND 23 -IOW 24 GND 25 -IOR 26 GND 27 IDERDY 28 Pul[...]

Merlin PCI Motherboard User’s Guide 32 Step 6 Test and Configure Review the following points before powering up: • make sure that all adapter cards are seated properly, • make sure all connectors are properly installed, • make sure the CPU is seated properly, • make sure there are no screws or other foreign material on the motherboard, ?[...]

Chapter 2 WINBIOS Setup 33 2 WINBIOS Setup In ISA and EISA computers, the system parameters (such as amount of memory, type of disk drives and video displays, and many other elements) are stored in NVRAM (Non-Volatile Random Access Memory), also called CMOS RAM. Unlike the DRAM (dynamic random access memory) that is used for standard system memory,[...]

Merlin PCI Motherboard User’s Guide 34 Using a Mouse with WINBIOS Setup WINBIOS Setup has a built-in mouse driver and can be accessed by either a serial mouse or PS/2-style mouse. WINBIOS Setup supports Microsoft- Compatible serial mice and all PS/2-type mice. The mouse click functions are: single click to change or select both global and current[...]

Chapter 2 WINBIOS Setup 35 WINBIOS Setup Menu The WINBIOS Setup main menu, shown below, is organized into four sections. Each of these sections corresponds to a section in this chapter. Each section contains several icons. Clicking on each icon activates a specific AMIBIOS function. The WINBIOS Setup main windows and related functions are described[...]

Merlin PCI Motherboard User’s Guide 36 Section 1 Setup Standard Setup Standard Setup options are displayed by choosing the Standard icon from the WINBIOS Setup main menu. All Standard Setup options are described in this section. Date/Time Select the Date and Time icon. The current values for each category are displayed. Enter new values through t[...]

Chapter 2 WINBIOS Setup 37 Standard Setup, Continued Pri Master, Pri Slave, Sec Master, Sec Slave Select one of these hard disk drive icons to configure the hard disk drive named in the option. Select Auto from the drive parameters screen to let AMIBIOS automatically configure the drive. A screen with a list of drive parameters appears. Click on OK[...]

Merlin PCI Motherboard User’s Guide 38 Standard Setup, Continued Entering Drive Parameters You can also enter the hard disk drive parameters. The drive parameters are: Parameter Description Type The number for a drive with certain identification parameters. Cylinders The number of cylinders in the disk drive. Heads The number of heads. Write Prec[...]

Chapter 2 WINBIOS Setup 39 Standard Setup, Continued MFM Hard Disk Drive Types Type Cylinders Heads Write Precompensation Landing Zone Sectors Capacity 1 306 4 128 305 17 10 MB 2 615 4 300 615 17 20 MB 3 615 6 300 615 17 31 MB 4 940 8 512 940 17 62 MB 5 940 6 512 940 17 47 MB 6 615 4 65535 615 17 20 MB 7 462 8 256 511 17 31 MB 8 733 5 65535 733 17 [...]

Merlin PCI Motherboard User’s Guide 40 Advanced Setup Advanced Setup options are displayed by choosing the Advanced icon from the WINBIOS Setup main menu. All Advanced Setup options are described in this section. Typematic Rate This option sets the rate at which characters on the screen repeat when a key is pressed and held down. The settings are[...]

Chapter 2 WINBIOS Setup 41 Advanced Setup, Continued Hit <DEL> Message Display Set this option to Disabled to prevent Hit <DEL> if you want to run Setup from appearing when the system boots. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Enabled. Wait for <F1> If Error AMIBIOS POST runs system[...]

Merlin PCI Motherboard User’s Guide 42 Advanced Setup, Continued Floppy Drive Seek When this option is set to Enabled, AMIBIOS performs a Seek command on floppy drive A: before booting the system. The settings are Enabled or Disabled. The Optimal default setting is Disabled . The Fail-Safe default setting is Enabled . Floppy Drive Swap Set this o[...]

Chapter 2 WINBIOS Setup 43 Advanced Setup, Continued System BIOS Cacheable When this option is set to Enabled, the contents of the F0000h system memory segment can be read from or written to L2 secondary cache memory. The contents of the F0000h memory segment are always copied from the BIOS ROM to system RAM for faster execution. The settings are E[...]

Merlin PCI Motherboard User’s Guide 44 Advanced Setup, Continued Video Shadow C000, 32K This option specifies the way that the 32 KB of video ROM beginning at C0000h is treated. The settings are: Setting Description Disabled The contents of the video ROM are not copied to RAM. Cached The contents of the video ROM area from C0000h - C7FFFh are not[...]

Chapter 2 WINBIOS Setup 45 Chipset Setup Chipset Setup options are displayed by choosing the Chipset icon from the WINBIOS Setup main menu. All Chipset Setup options are described in this section. PCI 2.1 Compliance Set this option to Enabled to program the chipset to comply with the PCI V2.1 specification. The Version 2.1 PCI specification require[...]

Merlin PCI Motherboard User’s Guide 46 Chipset Setup, Continued DRAM ECC Mode This option sets the type of system memory checking. The settings are: Setting Description Disabled No error checking or error reporting is done. Level I Multibit errors are detected and reported as parity errors. Single- bit errors are corrected by the chipset. Correct[...]

Chapter 2 WINBIOS Setup 47 Chipset Setup, Continued ISA VGA USWC/Video Frame Buffer Specify the starting address of the VGA USWC/video frame buffer. The settings: Setting Description Disabled No VGA video frame buffer is available. A0000h The system memory segment beginning at A0000h is used for the VGA USWC/video frame buffer. B0000h The system me[...]

Merlin PCI Motherboard User’s Guide 48 Chipset Setup, Continued Optional ROM Shadow Before Init Set this option to Enabled to permit the contents of the option ROM to be copied to RAM before being initialized by AMIBIOS during Power On Self Test. This option dose not appear if the Optional ROM Decode option is set to Disabled. The settings are Di[...]

Chapter 2 WINBIOS Setup 49 Chipset Setup, Continued ISA 8 Bit I/O Recovery Time This option specifies the length of the delay that is added to the CPU cycle between consecutive 8-bit I/O operations. The length of the delay is related to the CPU type and frequency. The settings are 1 Sysclock, 2 Sysclocks, 3 Sysclocks, 4 Sysclocks, 5 Sysclocks, 6 Sy[...]

Merlin PCI Motherboard User’s Guide 50 Power Management Setup The AMIBIOS Setup options described in this section are selected by choosing the Power Management Setup icon from the Setup section on the AMIBIOS Setup main menu. Standard Power Management Set this option to Enabled to enable standard power management, including SMI support. The setti[...]

Chapter 2 WINBIOS Setup 51 Power Management Setup, Continued DPMS Video Power Down Mode This option specifies the power state that a DPMS (Display Power Management Specification)-compliant video subsystem enters when AMIBIOS places it in a power saving state after the specified period of display inactivity has expired. The settings are Standby, Sus[...]

Merlin PCI Motherboard User’s Guide 52 Power Management Setup, Continued Standby Timeout This option specifies the length of a period of system inactivity while in Full power on state. When this length of time expires, the computer enters Standby power state. The settings are Disabled and 1 Min. through 15 Min in 1 minute intervals. The Optimal a[...]

Chapter 2 WINBIOS Setup 53 Power Management Setup, Continued IRQ3 IRQ4 IRQ5 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ15 When set to Monitor, these options enable event monitoring on the specified hardware interrupt request line. If set to Monitor and the computer is in a power saving state, AMIBIOS watches for activity on the specified IRQ line. The computer[...]

Merlin PCI Motherboard User’s Guide 54 PCI/PnP Setup Choose the PCI/PnP Setup icon from the WINBIOS Setup screen to display the PCI and Plug and Play Setup options, described below. PCI VGA Palette Snoop When this option is set to Enabled, multiple VGA devices operating on different buses can handle data from the CPU on each set of palette regist[...]

Chapter 2 WINBIOS Setup 55 PCI/PnP Setup, Continued PCI Slot-1 Latency Timer PCI Slot-2 Latency Timer PCI Slot-3 Latency Timer PCI Slot-4 Latency Timer These options specify the latency timings (in PCI clocks) for PCI devices installed in the four PCI expansion slots. The settings are 32, 64, 96, 128, 160, 192, 224, or 248. The Optimal and Fail- Sa[...]

Merlin PCI Motherboard User’s Guide 56 PCI/PnP Setup, Continued IRQ3 IRQ4 IRQ5 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15 These options specify the bus t hat the specified IRQ line is used on. These options allow you to reserve IRQs for legacy ISA adapter cards. These options determine if AMIBIOS should remove an IRQ from the pool of available IRQs [...]

Chapter 2 WINBIOS Setup 57 PCI/PnP Setup, Continued Reserved Memory Size This option specifies the size of the memory area reserved for legacy ISA adapter cards. The settings are Disabled, 16K, 32K, or 64K. The Optimal and Fail-Safe default settings are Disabled. Reserved Memory Address This option specifies the beginning address (in hex) of the re[...]

Merlin PCI Motherboard User’s Guide 58 Peripheral Setup Peripheral Setup options are displayed by choosing the Peripheral Setup icon from the WINBIOS Setup main menu. All Peripheral Setup options are described in this section. Onboard Floppy Controller Set this option to Enabled to enable the floppy drive controller on the motherboard. The settin[...]

Chapter 2 WINBIOS Setup 59 Peripheral Setup, Continued Offboard PCI/ISA IDE Card This option specifies the expansion slot that the offboard PCI or ISA IDE Controller adapter card is installed in. The Onboard Primary/Secondary IDE option must be set to Disabled if this option is set to any value except Disabled. The settings are Absent, ISA, Slot1, [...]

Merlin PCI Motherboard User’s Guide 60 Peripheral Setup, Continued Serial Port1 FIFO This option enables the FIFO buffer for the first serial port. The settings are Enabled or Disabled. The Optimal default setting is Disabled. The Fail- Safe default setting is N/A. Caution Do not enable the Serial Port 1 FIFO option if a mouse is attached to COM1[...]

Chapter 2 WINBIOS Setup 61 Peripheral Setup, Continued Parallel Port Address This option specifies the base I/O port address for the parallel port. The settings are 378h, 278h, or Disabled. The Optimal default setting is 378h. The Fail-Safe default setting is N/A. Parallel Port Mode This option specifies the parallel port mode. ECP and EPP are both[...]

Merlin PCI Motherboard User’s Guide 62 Section 2 Security Three icons appear in this part of the WINBIOS Setup screen: • Supervisor (Password), • User (Password), and • Anti-Virus (see page 64 ). Two Levels of Passwords Both the Supervisor and the User icons configure password support. If you use both, the Supervisor password must be set fi[...]

Chapter 2 WINBIOS Setup 63 Setting a Password The password check option is enabled in Advanced Setup (see page 41 by choosing either Always (the password prompt appears every time the system is powered on) or Setup (the password prompt appears only when WINBIOS is run). The password is encrypted and stored in NVRAM. As shown on the above screen, yo[...]

Merlin PCI Motherboard User’s Guide 64 Changing a Password Select the Supervisor or Use r icon from the Security section of the WINBIOS Setup main menu. Enter the password and press <Enter>. The screen does not display the characters entered. After the new password is entered, retype the new password as prompted and press <Enter>. If [...]

Chapter 2 WINBIOS Setup 65 Section 3 Utility The following icons appear in this section of the WINBIOS Setup main screen: Color Set Color Set sets the Setup screen colors. Language If this feature is enabled, you can select WINBIOS Setup messages in different languages.[...]

Merlin PCI Motherboard User’s Guide 66 Section 4 Default The icons in this section permit you to select a group of settings for all WINBIOS Setup options. Not only can you use these icons to quickly set system configuration parameters, you can choose a group of settings that have a better chance of working when the system is having configuration-[...]

Chapter 3 Programming the Flash ROM 67 3 Programming Flash ROM All versions of the Merlin PCI 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. Programmin[...]

Merlin PCI Motherboard User’s Guide 68 Programming the Flash ROM, Continued Bootblock Actions When you reprogram from system boot, the bootblock code: Reads S735P.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, [...]

Chapter 3 Programming the Flash ROM 69 Programming the Flash ROM, Continued Beep Codes The bootblock code produces a series of beeps during Flash ROM programming to: signify completion of a step (as shown on the previous page), or to signal an error. Error beeps are arranged in a coded sequence and have different meanings depending on when they occ[...]

Merlin PCI Motherboard User’s Guide 70 Bootblock Code Checkpoint Codes Code Description E0h Verify the Boot Block BIOS checksum. Disable the internal cache, DMA, and interrupt controllers. Initialize the system timer. Start memory refresh. E1h Initialize the chipset registers. Set the BIOS size to 128K. Make the 512 KB base memory available. E2h [...]

Chapter 4 Deleting a Password 71 4 Deleting a Password If you forget the passwords you set up through WINBIOS Setup, the only way you can restart the computer is to erase the system configuration information where the passwords are stored. System configuration data is stored in CMOS RAM, a type of memory that consumes very little power. Erase Old P[...]

Merlin PCI Motherboard User’s Guide 72 Avoid Static Electricity Static electricity can damage the motherboard and other computer components. Keep the motherboard in the anti-static bag until it is to be installed. Wear an anti-static wrist grounding strap before handling the motherboard. Make sure you stand on an anti- static mat when handling th[...]

Index 73 Index 1 16 Bit I/O Recovery, 49 3 3.3V CPU Power, 6 8 8 Bit I/O Recovery Time, 49 A Advanced Power Management (APM), 50 Advanced Setup, 40 AMIFlash Beep Codes, 69 Anti-Virus WINBIOS Setup, 64 Auxiliary Power Supply Timeout, 50 B BIOS Password Support, 62 BIOS Errors, 32 Boot Sequence, 42 Boot Up Num Lock, 41 Bootblock Checkpoint Codes, 70 [...]

Merlin PCI Motherboard User’s Guide 74 E Enhanced Parallel Port, 25, 61 ESCD NVRAM, 56 Extended Capabilities Port, 25, 61 F Fail-Safe BIOS Setup Settings WINBIOS Setup, 65 Figures Floppy drive cable, 26 Floppy drive connector, 26 Reset switch connector, 22 Speaker connector, 22 Turbo LED connector, 23 First Serial Port FIFO, 60 Flash EPROM Progra[...]

Index 75 J36 IDE Indicator LED, 23 J37 Keyboard Lock connector, 23 J4 CPU Fan, 9 J4 Secondary IDE Controller, 30 J6 Floppy Connector, 26 J7 pinout, 31 K Keyboard, 40 Keyboard connector, 20 L L1/L2 Cache, 42 Landing Zone, 38 Language, 65 M Memory Reporting, 12 Memory Hole, 49 Monitor, 40 Motherboard Dimensions, 2 Height restrictions, 2 Installing, 1[...]

Merlin PCI Motherboard User’s Guide 76 PCI VGA USWC/Video Frame Buffer, 47 PCI/PnP Setup, 54 Peripheral Setup, 58 Pinout Parallel Port, 25 Power supply, 20 Primary IDE connector, 30 Serial ports, 24 Pinouts IDE Activity Indicator, 23 Keyboard lock, 23 P1 Power Supply, 19 P2 Power Supply, 19, 20 Reset Switch, 22 Serial ports, 24 Turbo LED, 23 Powe[...]

Index 77 Speaker connector pinout, 22 Twist in floppy cable, 27 Testing System, 32 Turbo LED, 23 Typematic Rate, 40 U Unpack the Motherboard, 5 Utility, 65 V Video Shadow C000, 32K, 44 W Wait for <F1> If Error, 41 Watchdog Timer, 48 WINBIOS Setup, 33 Write Precompensation, 38[...]