Limitations of Liability In no event shall American Megatrends be held liable for any loss, expenses, or damages of any kind whatsoever, whether direct, indirect, incidental, or consequential, arising from the design or use of this product or the support materials provided with the product.
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This manual describes the specifications and features of the Atlas PCI-II motherboard. It explains how to assemble a system based on the Atlas PCI-II motherboard and how to use the AMIBIOS that is specifically designed for this motherboard. This manual is not meant to be read by the computer owner who purchases a computer with this motherboard.
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BIOS products. Product Engineering Change Notices, Tech Tips, Technical Notes, and complete technical manuals are available. Data Transmission Rates T he American Megatrends BBS automatically handles modems with data transmission rates from 1,200 to 28,800 bps.
You should have received the following: • an Atlas PCI-II motherboard, • two serial cables, • one parallel cable, • a Warranty Card, and • the American Megatrends Atlas PCI-II Pentium ISA Motherboard User's Guide . Atlas PCI-II Motherboard User’s Guide...
Hardware Installation Overview The American Megatrends Atlas PCI-II Pentium ISA motherboard features include: • support for an Intel Pentium 3.3V CPU operating at 75, 90, 100, 120, 133, 150, 166, or 200 MHz, • support for up to 256 MB of system memory, •...
Atlas PCI-II Dimensions The motherboard dimensions and height restrictions are shown below. The Atlas PCI II motherboard is the standard baby AT size with the standard mounting holes. Atlas PCI-II Motherboard User’s Guide...
Installation Steps Step Action Turn to Unpack the motherboard. Page 5 Configure the CPU. Page 6 Configure the CPU. Page 6 Select the CPU 3.3V Power Page 6 Source Select the CPU Voltage. Page 8 Select the CPU Speed. Page 8 Install the CPU.
Step 1 Unpack the Motherboard Step Action Inspect the cardboard carton for obvious damage. If damaged, call 770-246-8645. Leave the motherboard in its original packing. Perform all unpacking and installation procedures on a ground- connected anti -static mat. Wear an anti -static wristband grounded at the same point as the anti -static mat.
VRM, or • 3.3V power supply. From RegulatorSet J21, J2, and J12 as follows to configure 3.3V power from the regulator: P in1 P in1 P in6 P in6 P in1 P in6 Cont’d Atlas PCI-II Motherboard User’s Guide...
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Step 2 Configure CPU, Continued 3.3V CPU Power , cont’d From Regulator and VRM Set J21, J2, and J12 as follows to configure 3.3V power from the regulator and VRM: P in1 P in1 P in6 P in6 P in1 J1 2 P in6 From 3.3V Power Supply Set J21, J2, and J12 as follows to...
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OPEN Shorted Shorted Shorted 166 MHz Shorted OPEN Shorted Shorted 200 MHz Shorted OPEN OPEN Shorted Important Please contact American Megatrends technical support at 770-246-8645 to support a CPU running at a higher speed. Cont’d Atlas PCI-II Motherboard User’s Guide...
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Step 2 Configure CPU, Continued Connect CPU Fan J46 (shown below) is a two-pin berg that connects the fan on the CPU heat sink. Pentium CPUs running at 75 and 90 MHz are shipped with a heat sink. CPUs running at 100, 120, 133 MHz, or higher speeds are shipped with a heat sink and a CPU fan.
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Make sure you wear an antistatic wristband while installing the CPU. Follow all antistatic procedures described on page 5. Step Action Lift the lever on the ZIF socket. The empty CPU socket looks like this. Atlas PCI-II Motherboard User’s Guide...
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Step Action Pin 1 of the socket has a white diagonal line across one corner on the motherboard, which corresponds to pin 1 of the CPU. 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.
384 KB less than the total memory installed. Select SIMMs SIMMs must meet the following specifications: Parameter Specification Page Mode FAST Refresh CAS before RAS ≤ 20 ns ≤ 80 ns ≤ 45 ns 70 ns ≤ 45 ns Cont’d Atlas PCI-II Motherboard User’s Guide...
Step 3 Install Memory, Continued SIMM Part Numbers Type Manufactur Part Number 256 KB x 36 Micron® MT9D25636M-7 “ Mitsubishi® MH26636BJ-7 “ Motorola® MCM36256S-70 “ Oki® MSC2320A-70YS9 “ PNY® P36256-70 “ Samsung® KMM536256B-7 1 MB x 36 Micron MT12D136M-7 “ Mitsubishi MH1M36ADJ-7 “...
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Installing SIMMs There are four x 36 SIMM sockets located on the Atlas PCI-II motherboard. These sockets can be filled with either 256 KB x 32 (or 36), 512 KB x 32 (or 36), 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.
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Step 3 Install Memory, Continued Configure Cache Memory The Atlas PCI-II motherboard supports 256 KB, 512 KB or 1 MB of L2 cache memory. Cache memory is either surface-mounted SRAMs or a standard cache memory module. Important The Atlas PCI-II works with either the SMT cache memory or a cache module, but not both.
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Before inserting the cache module: • turn the computer off, • make sure you follow all antistatic procedures, • disable SMT cache by shorting Pins 2-3 of J30, and • use only COAST 1.0-compliant cache modules. Cont’d Atlas PCI-II Motherboard User’s Guide...
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Step 3 Install Memory, Continued Upgrade Cache Select the SRAM module in the SRAM Type option in Chipset Setup in WINBIOS Setup. Insert the cache module as shown below: Chapter 1 Hardware Installation...
If using metallic screws, make sure you use them only in the plated mounting holes. If using metallic screws, make sure the head of the screw fits completely inside the plated mounting holes. See the graphic on the following page. Cont’d Atlas PCI-II Motherboard User’s Guide...
If so, follow the wire to the switch or LED. All motherboard components are outlined by a white rectangular box with a broad arrow at one end. Pin 1 is at the arrow end: Cont’d Atlas PCI-II Motherboard User’s Guide...
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Step 5 Attach Cables, Continued J42 Green PC Monitor J42 is a 10-pin connector that can be used to attach your monitor to the motherboard to allow AMIBIOS to conserve monitor power. If the VGA card in your computer is not DPMS-aware (Display Power Management Services), this connector provides a way to conserve monitor power.
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After the timeout period specified in Power Management Setup expires, the motherboard drives the SYNC ENABLE, HSYNC, and VSYNC signals Low through open collector outputs. Monitors that support DPMS can turn power off after examining this condition, saving power. Cont’d Atlas PCI-II Motherboard User’s Guide...
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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 voltages and must be set (usually via a switch) to the proper range.
Step 5 Attach Cables, Continued P3 Pinout P3 provides 3.3V power. Description Ground (Black wire) Ground (Black wire) -5 Volts (White wire) 3.3V 3.3V 3.3V Keyboard Connector The keyboard connector (J5) is a six-pin DIN socket. The J5 pinout is shown below. The keyboard connector position is shown on page Assignments Keyboard clock...
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Connect Mouse Cable The mouse connector (J13) is a 10-pin berg. The mouse cable is the same as the serial cable in the Atlas PCI-II 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 following pinouts.
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AMIBIOS signals hardware problems through the speaker. Pin 1 on the motherboard is identified by the arrow on the white box around the berg. The Atlas PCI-II motherboard also has a built- in speaker mounted on the motherboard. Description Data Out Cont’d...
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 J34. Cont’d Atlas PCI-II Motherboard User’s Guide...
AMIBIOS minimize conflicts between onboard and offboard I/O devices. AMIBIOS automatically checks the adapter cards installed in the expansion slots on the Atlas PCI-II motherboard for a hard disk or floppy controller and serial or parallel ports. J3 SER1 J4 SER2 J3 and J4 are 10-pin connectors that provide an AT-compatible serial port interface.
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All parallel port settings can be configured through Peripheral Setup in WINBIOS Setup. Signal Signal Description Description STROBE# ACK# BUSY SLCT AUTOFD# ERROR# INIT# SLCTIN# Ground Ground Ground Ground Ground Ground Ground Ground Ground Cont’d Atlas PCI-II Motherboard User’s Guide...
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Step 5 Attach Cables, Continued J7 Floppy J7 is a 34-pin dual-inline berg. Connect the cable from the floppy drive to J7, 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 controller.
Floppy B to A Floppy B to A Floppy B to A Floppy B to A 10 to 16 12 to 14 14 to 12 16 to 10 11 to 15 13 to 13 15 to 11 Cont’d Atlas PCI-II Motherboard User’s Guide...
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. Sec ond ary Slave Dri v e Se co nd a ry M a ster Dri v e Secondary IDE Connector Primary IDE Connector Prim ary M aste r Drive...
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Disable the onboard IDE interface in Peripheral Setup to use an ISA ESDI, RLL, MFM, or SCSI hard disk drive controller. Install IDE Drivers American Megatrends provides IDE drivers for the onboard IDE controller. These drivers are unnecessary if running in DOS, but must be loaded for other operating systems.
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Step 5 Attach Cables, Continued J8 Pinout The J8 pinout is: -RESET DATA7 DATA8 DATA6 DATA9 DATA5 DATA10 DATA4 DATA11 DATA3 DATA12 DATA2 DATA13 DATA1 DATA14 DATA0 DATA15 KEY (N/C) -IOW -IOR IDERDY INT14 -IOCS16 -CS0 -CS1 -IDEACT J1 Secondary IDE Controller J1, the secondary IDE connector, is a 40-pin dual-inline berg that connects the secondary primary and slave IDE drives to the...
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, •...
New BIOS 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.
Return to the previous page <PgDn> Advance to the next page. <Home> Returns to the beginning of the text. <End> Advance to the end of the text. <Ctrl><Alt><+ Change to high speed > <Ctrl><Alt><-> Change to low speed. Atlas PCI-II Motherboard User’s Guide...
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 page.
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89 , has two icons that control AMIBIOS security features, and • Default, described in Section 4 beginning on page 93 , this section has three icons that permit you to select a group of settings for all AMIBIOS WINBIOS Setup options. Atlas PCI-II Motherboard User’s Guide...
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. The Standard Setup screen follows. Date/Time Select the Standard option. Select the Date and Time icon.
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). Cont’d Atlas PCI-II Motherboard User’s Guide...
PS/2-type mouse. Pins 1-2 of J38 on the motherboard must be shorted together to enable PS/2 mouse support. The settings are Enabled or Disabled. The Optimal default setting is Enabled. The Fail- Safe default setting is Disabled. Cont’d Atlas PCI-II Motherboard User’s Guide...
Advanced Setup, Continued Above 1 MB Memory Test When this option is enabled, the BIOS memory test is performed on all system memory. When this option is disabled, the memory test is done only on the first 1 MB of system memory. The settings are Enabled or Disabled.
When this option is 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. Cont’d Atlas PCI-II Motherboard User’s Guide...
Advanced Setup, Continued Floppy Drive SwappingSet this opt ion to Enabled to permit drives A: and B: to be swapped. The settings are Enabled or Disabled. The Optimal and Fail-Safe default settings are Disabled. System Boot Up Sequence This option sets the sequence of boot drives (either floppy drive A: or hard disk drive C:) AMIBIOS attempts to boot from after AMIBIOS POST completes.
If a hard reset is generated, a PCI caching controller card cannot flush data from cache memory to a hard disk drive before the reset. Cont’d Atlas PCI-II Motherboard User’s Guide...
Advanced Setup, Continued Video ROM C000,32K This option controls the location of the contents of video ROM. The settings are: Setting Description Enabled The contents of the video ROM area (C0000h - C7FFFh) are written to the same address in RAM. Disable The video ROM is not copied to RAM.
I/O operations. The length of the delay is related to the CPU type and frequency. The settings are BCLK, 5 BCLK, 4 BCLK, or 3 BCLK. The Optimal default setting is 3 BCLK. The Fail-Safe default setting is 8 BCLK. Cont’d Atlas PCI-II Motherboard User’s Guide...
Chipset Setup, Continued 16 Bit I/O Recovery This option specifies the length of the delay that is added to the CPU cycle between consecutive 16- bit I/O operations. The length of the delay is related to the CPU type and frequency. The settings are BCLK, 4 BCLK, 3 BCLK, or 2 BCLK.
ISA memory block. The settings are Disabled (only if the ISA Memory Block Base option is set to Disabled), 8KB, 16KB, 32KB, or 64KB. The Optimal default setting is 8KB. The Fail- Safe default setting is Disabled. Cont’d Atlas PCI-II Motherboard User’s Guide...
Chipset Setup, Continued Non-Cacheable Block1 Non-Cacheable Block2 These options specify how non-cacheable memory blocks 1 and 2 are used. The settings are: Setting Description Disabled This block of memory is not used. DRAM This block of memory can be used for system memory.
Standby The video subsystem will power down when the computer enters Standby mode. Suspend The video subsystem will power down when the computer enters Suspend mode. The Optimal and Fail-Safe defaults are Disabled. Cont’d Atlas PCI-II Motherboard User’s Guide...
Power Management Setup, Continued Hard Disk Power Down Mode This option specifies the power management state in which the hard disk drive will be powered down. The settings are: Setting Description Disabled The hard disk drive does not power down when the computer enters a power saving mode.
Monitor. The system exits Suspend mode if any activity occurs on any IRQ set to Monitor. Each of these options can be set to Monitor or Ignore. The default setting for all options is Ignore. Atlas PCI-II Motherboard User’s Guide...
IDE drives. First, definitions for IDE terms are provided. Term Description Onboard The IDE controllers on the Atlas PCI-II motherboard. There is a primary and a secondary IDE controller on the motherboard. Each IDE controller supports up to two IDE devices. Offboard The IDE controllers on an IDE controller adapter card inserted in an ISA or PCI expansion slot.
IDE controller. Slave Enable IDE LBA mode for the slave drive attached to the primary IDE controller. Both Enable IDE LBA mode for both the Primary and Secondary IDE controller enabled. Atlas PCI-II Motherboard User’s Guide...
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Peripheral Setup Description Option IDE Block Mode IDE Block mode enables higher data transfer rates. Setting Description Disabled Do not enable IDE Block Mode (Default). Master Enable IDE Block Mode for the master IDE drive attached to the primary IDE controller.
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Primary and Secondary IDE controller Onboard Primary/ You can enable or disable posted writes to the Onboard specified IDE drive through these options. The Secondary settings are Enabled or Disabled. IDE Post Write Atlas PCI-II Motherboard User’s Guide...
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Peripheral Setup Description Option IDE Master/Slave Not available for Offboard Primary and Offboard Secondary IDE Controller. The IDE PIO (Programmed I/O) mode is a standard for information storage and retrieval. In general, higher modes provided better performance than lower modes. The PIO mode for all IDE drives is set at the factory and cannot be changed.
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Offboard Secondary IDE Controller. Use this option to specify the PCI interrupt used by the offboard PCI IDE controller (if installed). The settings are INTA, INTB, INTC, INTD, or Not Used. The default setting is INTA. Cont’d Atlas PCI-II Motherboard User’s Guide...
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Peripheral Setup, Continued Onboard Primary/Secondary Controllers The Peripheral Setup IDE options that become available depends on the onboard IDE controllers you enable: Controller Peripheral Setup IDE Options Only Set Onboard Primary/Secondary IDE to Primary Primary. The following options become available: Onboard Primary LBA Mode, Onboard Primary Block Mode, Onboard Primary 32-Bit Transfer,...
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None, 1 Drive , or 2 Drives . The following options become available: Onboard Secondary Drives Present, Onboard Secondary LBA Mode, Onboard Secondary Block Mode, Onboard Secondary 32-Bit Transfer, Onboard Secondary Prefetch, Onboard Secondary Master PIO, and Onboard Secondary Slave PIO. Atlas PCI-II Motherboard User’s Guide...
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Peripheral Setup, Continued Offboard Primary/Secondary Controllers The IDE op tions that become available depend on the enabled offboard IDE controllers. Set Onboard Primary/Secondary IDE to Disabled. Set Offboard PCI/ISA IDE • ISA if an ISA IDE card is installed in an ISA expansion slot.
Serial Port2 IRQ This option specifies the IRQ (Interrupt Request Line) used by serial port 1. The settings are IRQ 3 or Disabled. The Optimal default setting is IRQ 3. The Fail-Safe default setting is Disabled. Cont’d Atlas PCI-II Motherboard User’s Guide...
Peripheral Setup, Continued Serial Port2 Address This option specifies the base I/O port address of serial port 2. The settings are 2F8h, 2E8h, or Disabled. The Optimal default setting s 2F8h. The Fail-Safe default setting is N/A. Serial Port2 FIFO This option enables the FIFO buffer for the second serial port.
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Parallel Port DMA This option is only available if the setting for the Parallel Port Mode option is ECP. The settings are DMA CH (channel) 0, DMA CH 1, or DMA CH 3. The Optimal and Fail-Safe default setting is DMA Ch 0. Atlas PCI-II Motherboard User’s Guide...
Section 2 Utility The following icons appear in this section: Detect C: if drive C: is an IDE drive, the hard disk drive parameters for drive C: are automatically detected and reported to the Hard Disk Drive C: screen in Standard Setup, so you can easily configure drive C:.
Make sure you write it down. If you forget it, you must drain CMOS RAM and reconfigure. If You Do Not Want to Use a Password Just press <Enter> when the password prompt appears. Atlas PCI-II Motherboard User’s Guide...
Changing a Password Select the Password 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>.
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. Atlas PCI-II Motherboard User’s Guide...
Programming the Flash All versions of the Atlas PCI-II 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..
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BIOS code. American Megatrends will provide this file when the AMIBIOS for the Atlas PCI-II ISA motherboard must be updated. S727P.ROM must be present in the root directory of the floppy disk before the onboard Flash EPROM can be reprogrammed.
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 occur.
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. Atlas PCI-II Motherboard User’s Guide...
A Specifications Item Description Intel Pentium 75, 90, 100, 120, 133 MHz, or higher 3.3V CPU Expansion slots Four ISA expansion slots Four PCI expansion slots L1 internal The Intel Pentium has 8 KB data cache and 8 KB cache memory instruction cache.
Green PC LED, power management signal to Green PC-aware power supplies, automatic IDE and video power down, monitor blanking, SMI (System Management Interrupt) support, APM, and system stop clock. Speaker Standard four-pin speaker connection. Atlas PCI-II Motherboard User’s Guide...
If you need to install IDE drives in the computer and you are not using the onboard PCI IDE controller on the Atlas PCI-II motherboard, you must configure an offboard IDE controller. The following instructions have been tested with a TekRAM and BusLogic DC-690CD PIC IDE controller.
Index Connectors —1— Floppy disk, 31 16 Bit I/O Recovery, 53 IDE Activity Indicator, 28 IDE Hard Disk Drive, 34 —8— Keyboard, 25 8 Bit I/O Recovery, 52 Power supply, 24 Reset Switch, 27 —A— Serial ports, 29 Above 1 MB Memory Test, 47 SIMM, 14 Adaptor ROM D800, 16K, 51 Speaker, 27...
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Installing the Motherboard, 18 —L— Instant On Support, 56 Internal Cache, 49 Landing Zone, 44 IRQ 10, 51 —M— IRQ 11, 51 Max Burst Range in PCI IRQ 12, 51 Master, 53 IRQ 14, 51 Atlas PCI-II Motherboard User’s Guide...
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Memory Pinouts Reporting, 12 IDE Activity Indicator, 28 Memory Test Tick Sound, 47 Keyboard lock, 28 Monitor, 46 P1 Power Supply, 24 Motherboard P2 Power Supply, 24, 25 Dimensions, 2 Reset Switch, 27 Height restrictions, 2 Serial ports, 29 Mouse Support, 46 Turbo LED, 28 Power Management Setup, 56 —N—...
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WINBIOS Setup, 69 —V— VGA Memory Upgrading, 77 Video BIOS Cacheable, 50 Video Power Down Mode, 56 Video ROM C000,32K, 51 —W— Wait for F1 If Any Error, 48 WINBIOS Setup, 39 Write Precompensation, 44 Atlas PCI-II Motherboard User’s Guide...
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