American Megatrends Pegasus User Manual
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American Megatrends Pegasus User Manual

American Megatrends Pegasus User Manual

Pentium ii pci isa motherboard
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Pegasus
Pentium® II
PCI ISA Motherboard
User's Guide
MAN-759
7/3/97

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Summary of Contents for American Megatrends Pegasus

  • Page 1 Pegasus Pentium® II PCI ISA Motherboard User's Guide MAN-759 7/3/97...
  • Page 2 Limited Warranty Buyer agrees if this product proves to be defective, that American Megatrends, Inc. is only obligated to replace or refund the purchase price of this product at American Megatrend's discretion according to the terms and conditions on the motherboard warranty card. American Megatrends shall not be liable in tort or contract for any loss or damage, direct, incidental or consequential.
  • Page 3 To the OEM Thank you for purchasing the high performance American Megatrends Pegasus Pentium II PCI 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 Megatrends Pegasus motherboard.

  • Page 4: Packing List

    Supports HST and v.42. 770-246-8783 Supports HST and v.42. Web Site We invite you to access the American Megatrends world wide web site at: http://www.megatrends.com. Packing List You should have received the following: a Pegasus Pentium II PCI ISA motherboard,...

  • Page 5: Hardware Installation

    ISA expansion slots, and four PCI expansion slots. CPUs The Pegasus motherboard will support all Intel Slot1 CPUs operating at 233 MHz, 266 MHz, 300 MHz, or faster speeds. PCI Bus Speed AMIBIOS automatically configures the PCI slots. The PCI slots are...
  • Page 6 The motherboard is approximately 8.55” by 13” (baby AT size). The motherboard height restrictions are shown below: This motherboard contains sensitive electronic components that can be easily damaged by static electricity. Follow the antistatic instructions carefully to ensure correct installation Pegasus PCI Motherboard User’s Guide Warning and to avoid damage.
  • Page 7 Pegasus PCI Motherboard Layout BANK2 BANK1 BANK0 Chapter 1 Hardware Installation...

  • Page 8: Step 1 Unpack The Motherboard

    Make sure you stand on an anti-static mat when handling the motherboard. Avoid contact with any component or connector on any adapter card, printed circuit board, or memory module. Handle these components by the mounting bracket. Pegasus PCI Motherboard User’s Guide Action...

  • Page 9: Step 2 Configure Cpu Speed

    Speed Shorted OPEN Shorted OPEN Shorted OPEN Shorted OPEN Please contact American Megatrends technical support at 770-246-8645 to support a CPU running at other speeds. Chapter 1 Hardware Installation Shorted OPEN Short Short Pins 1-2 Pins 1-2 Short Pins 5-6...
  • Page 10 2.5V 2.4V 2.3V 2.2V 2.1V 2.05V 2.0V 1.95V 1.90V Pegasus PCI Motherboard User’s Guide J5 and J15 Setting Short Pins 2-7 Short Pins 3-8 Short Pins 4-9 Short Pins 5-10 Short Pins 2-7 Short Pins 3-8 Short Pins 4-9 Short Pins 2-7...
  • Page 11 Core CPU Voltage 1.85V 1.8V No CPU Step 4 Install Voltage Regulator A Voltage Regulator Module (VRM) is shipped with every Pegasus motherboard. You can order VRMs for Intel Pentium II CPUs from: Manufacturer Part Number 073-20715-02 Corsair SPX560KM Chapter 1 Hardware Installation...

  • Page 12: Step 5 Connect Cpu Fan

    J33 is the auxiliary chassis fan connector. He chassis fan should provide a tachometer output on Pin 3 so the fan speed can be monitored by the onboard server management hardware. Pegasus PCI Motherboard User’s Guide (yellow) lead should provide a tachometer...

  • Page 13: Step 6 Install Cpu

    Bank0, then the same type of 4 MB SIMM must be installed in the second Bank0 SIMM socket. The minimum amount of system memory supported by the Pegasus PCI is 8 MB. Each socket can hold one SIMM. You can use:...
  • Page 14 SIMM facing you, firmly push the SIMM into the socket at an angle, then push it up. When properly inserted, the SIMM clicks into place as the latching pins engage. Pegasus PCI Motherboard User’s Guide Specification Fast or EDO CAS before RAS...

  • Page 15: Step 8 Install The Motherboard

    Step 8 Install the Motherboard The motherboard mounting hole pattern is shown on the following page. Standoffs and mounting screws are not supplied with the motherboard. The chassis manufacturer should supply these parts. Step Place the chassis on an anti-static mat. Connect the chassis to ground to avoid static damage during installation.

  • Page 16: Step 9 Attach Cables

    If so, follow the wire to the switch or LED. Motherboard components are outlined by a white rectangular box with a broad arrow at one end. Pin 1 is always at the arrow end of the box: Pegasus PCI Motherboard User’s Guide Connector Cont’d...
  • Page 17 Step 9 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 voltages and must be set (usually via a switch) to the proper range.
  • Page 18 Power Good (Orange wire) (Not used) VCC (Red wire) +12 Volts (Yellow wire) -12 Volts (Blue wire) Ground (Black wire) Ground (Black wire) P1 Pinout Pegasus PCI Motherboard User’s Guide Description Description Ground (Black wire) Ground (Black wire) -5 Volts (White wire) VCC (Red wire)
  • Page 19 Step 9 Attach Cables, Continued P14 Pinout P3 Pinout J29 Erase Password J29 is a 2-pin berg that can be used to erase the contents of CMOS RAM, where all system configuration information is stored. If you forget the AMIBIOS password, you can place a shorting bridge on J29 for a few seconds to erase the old password (and all system configuration information as well).
  • Page 20 J30 External SMI J30 is a 2-pin berg. An external SMI (System Management Interrupt) source can be connected to J30. When an external SMI needs to generate an SMI to the system, Pin 1 must be shorted to Pin 2 (as a pulse). Pegasus PCI Motherboard User’s Guide Assignments Keyboard clock...
  • Page 21 AMIBIOS supports both the IrDA (Infrared Dealer’s Association) infrared standard and the ASK IR amplitude shift keyed infrared standard. No infrared cable will be supplied with the Pegasus motherboard. You can call American Megatrends technical support at 770-246-8600 for information about making an infrared cable.
  • Page 22 In some IDE drives, you may have to disable the IDE LED mounted on the drive by changing a jumper or setting a switch on the IDE drive itself, before the IDE drive sends a signal to J31. Pegasus PCI Motherboard User’s Guide Description Ground Ground...
  • Page 23 Step 9 Attach Cables, Continued Optional USB Cable You can only use a custom USB cable with this motherboard. You can order this USB cable (AMI part number CBLKIT-USB-1) from American Megatrends at 800-828-9264. Warning The pinout for the optional USB Cable Box is: Pin 1 Pin 2 Green...
  • Page 24 AMIBIOS minimizes conflicts between onboard and offboard I/O devices. AMIBIOS automatically checks the adapter cards installed in the expansion slots on the Pegasus PCI motherboard for a hard disk or floppy controller and serial or parallel ports. J3 SER1 J2 SER2 J2 and J3 are 9-pin connectors that provide an AT-compatible serial port interface.
  • Page 25 Step 10 Connect I/O, Continued J8 Parallel Port J8 is a 25-pin connector for a parallel port. The J8 pinout is shown below. Connect the 16-pin to DB25 cable provided with the motherboard to J8. The parallel port interface supports: the standard Centronics-compatible parallel port, the ECP (Extended Capabilities Port), and the EPP (Enhanced Parallel Port) port.
  • Page 26 34-pin edge connectors for attaching the floppy disk drives. There is a small twist in the cable between the floppy connectors. The last (end) connector should be connected to floppy drive A:. Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 27 Step 10 Connect I/O, Continued J4 Floppy Connector Pinout Twist in Floppy Cable Floppy B to A Floppy B to A 10 to 16 11 to 15 Chapter 1 Hardware Installation DENSE1 DRATE0 -INDEX -MOTOR0 -FDSEL1 -FDSEL0 -MOTOR1 -WDATA -WGATE -TRK0 -WRPROT -RDATA...
  • Page 28 Step 10 Connect I/O, Continued IDE Drives Attach the IDE drives in the following manner. Choose Peripheral Setup in WINBIOS Setup to enable the onboard IDE controller. Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 29 Step 10 Connect I/O, Continued Attach IDE Cable J11 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 J11, as shown below. Chapter 1 Hardware Installation...
  • Page 30 IDE drives to the secondary onboard IDE controller. Attach the secondary master and slave IDE drives to J9 via a standard 40-pin IDE cable. Pegasus PCI Motherboard User’s Guide DATA8 DATA9 DATA10 DATA11...

  • Page 31: Step 11 Install Drivers

    American Megatrends SystemGuru server management software. Installing DMI Wizard 95 The American Megatrends DMI Wizard 95 User’s Guide is provided with the Pegasus motherboard. Follow the DMI Wizard 95 installation instruction in the DMI Wizard 95 User’s Guide.

  • Page 32: Step 12 Test And Configure

    Configure the System Run WINBIOS Setup. You must enter the requested information and save the configuration data in NVRAM. The system will then reset, run POST, and boot the operating system. See the following chapter for information on configuring the computer. Pegasus PCI Motherboard User’s Guide...
  • Page 33 Chapter 1 Hardware Installation...

  • Page 35: Winbios® Setup

    Historically, BIOS Setup utilities have been character-based, required keyboard input, and have had user interfaces that were not very intuitive. Graphical Setup American Megatrends has a new type of system BIOS Setup utility. WINBIOS Setup has a graphical user interface the end user can access using a mouse.

  • Page 36: Using A Mouse With Winbios Setup

    <Esc> <PgUp> <PgDn> <Home> <End> <Ctrl><Alt><+> <Ctrl><Alt><-> Pegasus PCI Motherboard User’s Guide Action Change or select a global field. Change or select the current field. Perform an operation in the current field Increment a value. Decrement a value. Abort any window function.

  • Page 37: Winbios Setup Menu

    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 on the next screen.

  • Page 38: Section 1 Setup

    Floppy Drive A: and B: Move the cursor to these fields via The settings are Disabled, 360 KB 5¼ inch, 1.2 MB 5¼ inch, 720 KB 3½ inch, 1.44 MB 3½ inch, or 2.88 MB 3½ inch. Pegasus PCI Motherboard User’s Guide and select the floppy type.
  • Page 39 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.
  • Page 40 IDE drives have even more sectors per track. Capacity The formatted capacity of the drive is the number of heads times the number of cylinders times the number of sectors per track times 512 (bytes per sector). Pegasus PCI Motherboard User’s Guide Description Cont’d...

  • Page 41: Hard Disk Drive Types

    Standard Setup, Continued Hard Disk Drive Types Type Cylinders Heads 1024 1024 1024 1024 1024 1024 1224 AMIBIOS automatically sets IDE drive parameters. Select USER to enter MFM, ESDI, or RLL drive parameters. Select Not Installed for SCSI drives. Select CDROM for CD-ROM drives. Chapter 2 WINBIOS Setup Write Landing...

  • Page 42: Advanced Setup

    Setup Color Scheme This option specifies the foreground, background, and border color combinations that AMIBIOS Setup is displayed in. The settings are Pastel, Army, LCD, and Sky. The Optimal and Fail-Safe default settings are LCD. Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 43 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>...
  • Page 44 Optimal and Fail-Safe default settings are Disabled. Floppy Drive Swap Set this option to Enabled to permit drives A: and B: to be swapped. The settings are Enabled or Disabled. The default settings are Disabled. Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 45 Advanced Setup, Continued Floppy Access Control This option specifies the read/write access that is set when booting from a floppy drive. The settings are Read/Write or Read-Only. The Optimal and Fail-Safe default settings are Read/Write. Hard Disk Access Control This option specifies the read/write access that is set when booting from a hard disk drive.
  • Page 46 1 Boot Device, 2 Boot Device options. The settings are Yes or No. The Optimal and Fail-Safe default settings are Yes. Pegasus PCI Motherboard User’s Guide Boot Device, 3 Boot Device, and 4 Cont’d...
  • Page 47 Advanced Setup, Continued L1/L2 Cache This option sets the type of caching algorithm used by the L1 internal cache memory on the CPU and the L2 secondary cache memory. The settings are WriteBack, WriteThru, or Disabled. The Optimal and Fail-Safe default settings are WriteBack.
  • Page 48 ROM to RAM and can be written to or read from cache memory. The contents of the named ROM area (C800, CC00, etc.) are Enabled copied from ROM to RAM for faster execution. The Optimal and Fail-Safe default settings are Disabled. Pegasus PCI Motherboard User’s Guide Description...

  • Page 49: Chipset Setup

    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 Version 2.1 specification.
  • Page 50 The next time the error location is read, the chipset will once again find a bad bit. The chipset generates a Parity Error, indicating an uncorrectable memory error. The Optimal and Fail-Safe defaults are Disabled. Pegasus PCI Motherboard User’s Guide then... Cont’d...
  • Page 51 Chipset Setup, Continued PCI VGA USWC/Video Frame Buffer Set this option to Enabled to enable the USWC memory attribute and improve video performance when a PCI video adapter is installed. However, VGA card drivers may not behave correctly when this option is set to Enabled.
  • Page 52 Safe default settings are Disabled. USB Keyboard/Mouse Legacy Support Set this option to Enabled to enable USB support for legacy keyboards and mice. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Disabled. Pegasus PCI Motherboard User’s Guide...

  • Page 53: Power Management Setup

    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.
  • Page 54 4 min., 5 min., 6 min, 7 min., 8 min., 9 min., 10 min., 11 min., 12 min., 13 min., 14 min, or 15 min. The Optimal and Fail-Safe default settings are Disabled. Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 55 Power Management Setup, 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, 1 min. (minute), 2 min, 3 min., 4 min., 5 min., 6 min, 7 min., 8 min., 9 min., 10 min., 11 min., 12 min., 13 min., 14 min, or 15 min.
  • Page 56 The computer enters the Full On state if any activity occurs. AMIBIOS reloads the Standby and Suspend timeout timers if activity occurs on the specified IRQ line. The settings for each of these options are Monitor or Ignore. The Optimal and Fail-Safe default settings are Disabled. Pegasus PCI Motherboard User’s Guide...

  • Page 57: Pci/Pnp Setup

    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 registers on every video device.
  • Page 58 PCI Slot-4 IRQ Preference These options specify the IRQ priority for USB and PCI devices installed in the PCI expansion slots. The settings are Disabled, Auto, IRQ 5, IRQ 7, IRQ 9, IRQ10, IRQ11, IRQ 14, or IRQ15. The Optimal and Fail-Safe default settings are Auto. Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 59 PCI/PnP Setup, Continued IRQ3 IRQ4 IRQ5 IRQ7 IRQ9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15 These options specify the bus that the specified IRQ line uses. Use these options to reserve IRQs for legacy ISA adapter cards. The setting determines if AMIBIOS should remove an IRQ from the pool of available IRQs passed to devices that can be configured by the system BIOS.
  • Page 60 This option does not appear if the Reserved Memory Size option is set to Disabled. The settings are C0000, C4000, C8000, CC000, D0000, D4000, D8000, or DC000. The Optimal and Fail-Safe default settings are N/A. Pegasus PCI Motherboard User’s Guide...

  • Page 61: Peripheral Setup

    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.
  • Page 62 Onboard Serial Port1 This option specifies the base I/O port address for serial port 1. The settings are 3E8h, 3F8h, 2F8h, 2E8h, or Disabled. The Optimal default setting is 3F8h. The Fail-Safe default setting is not provided Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 63 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 Disabled. Do not enable the Serial Port 1 FIFO option if a mouse is attached to COM1.
  • Page 64 Onboard Parallel Port 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 not provided. Pegasus PCI Motherboard User’s Guide Cont’d...
  • Page 65 Peripheral Setup, Continued Parallel Port Mode This option specifies the parallel port mode. ECP and EPP are both bidirectional data transfer modes that adhere to the IEEE P1284 specifications. The settings are: Setting Normal The standard AT-compatible parallel port mode is used. The parallel port can be used with devices that adhere to the Enhanced Parallel Port (EPP) specification.

  • Page 66: Section 2 Security

    The Supervisor and User icons activate two different levels of password security: Supervisor and User. In addition, the computer can be configured so that all users must enter a password every time the system boots or when WINBIOS Setup is executed. Pegasus PCI Motherboard User’s Guide...

  • Page 67: Setting A Password

    Setting a Password The password check option is enabled in Advanced Setup 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, you are prompted for a 1 –...

  • Page 68: Changing A Password

    Possible VIRUS: Continue (Y/N)? _ The following appears after any attempt to format any cylinder, head, or sector of any hard disk drive via the BIOS INT 13 Hard Disk Drive Service: Format!!! Possible VIRUS: Continue (Y/N)? _ Pegasus PCI Motherboard User’s Guide...

  • Page 69: Section 3 Utility

    Section 3 Utility The icons in this section of the WINBIOS Setup main screen permit you to choose a different set of colors for the WINBIOS Setup screens and to display all WINBIOS Setup text displayed on the screen in a different language. If you choose to display the WINBIOS Setup screen text in a different language, the text for the screen messages written in the selected language must have been incorporated into the WINBOIS Setup code in AMIBIOS...

  • Page 70: Section 4 Default

    Fail-Safe icon from the Default section of the WINBIOS Setup main menu. The Fail-Safe settings provide far from optimal system performance, but are the most stable settings. Use this option as a diagnostic aid if the system is behaving erratically. Pegasus PCI Motherboard User’s Guide...

  • Page 71: Programming Flash Rom

    Programming Flash All versions of the Pegasus 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.

  • Page 72: Programming The Flash Rom

    S759P.ROM S759P.ROM resides on a floppy disk and contains the updated main BIOS code. American Megatrends will provide this file when the AMIBIOS for the Pegasus PCI ISA motherboard must be updated. S759P.ROM must be present in the root directory of the floppy disk before the onboard Flash EPROM can be reprogrammed.
  • Page 73 Programming the Flash ROM, 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 screen), or to signal an error. Error beeps are arranged in a coded sequence and have different meanings depending on when they occur.

  • Page 74: Bootblock Code Checkpoint Codes

    Flash ROM. Detect the flash type. Start erasing flash blocks. Program the Flash ROM in the E0000-EFFFFh region. Start programming Flash at F0000-FFFFF region. Flash programming is successful. The computer reboots. Pegasus PCI Motherboard User’s Guide Description...

  • Page 75: Deleting A Password

    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.

  • Page 76: Avoid Static Electricity

    Make sure you stand on an anti-static mat when handling the motherboard. Avoid contact with any component or connector on any adapter card, printed circuit board, or memory module. Handle these components by the mounting bracket. Pegasus PCI Motherboard User’s Guide...

  • Page 77: Engineering Specifications

    Specifications Engineering Specifications Temperature Ranges The following values are ambient temperatures inside the computer case. The board temperatures reflect the dual Pentium II CPU Heat dissipation requirements because they will be the hottest motherboard components. Temperature specifications vary with the CPU frequency. Frequency Heat Sink...

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