R TX97 Pentium Motherboard USER'S MANUAL
USER'S NOTICE No part of this manual, including the products and softwares described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
ASUS CONTACT INFORMATION ASUSTeK COMPUTER INC. Marketing Info Address: Telephone: Fax: Email: 150 Li-Te Road, Peitou, Taipei, Taiwan 112, ROC +886-2-894-3447 +886-2-894-3449 info@asus.com.tw Technical Support Fax: BBS: Email: WWW: Gopher: FTP: +886-2-895-9254 +886-2-896-4667 tsd@asus.com.tw www.asus.com.tw gopher.asus.com.tw ftp.asus.com.
CONTENTS I. INTRODUCTION ........................................................................... How this manual is organized .......................................................... Item Checklist .................................................................................. II. FEATURES .................................................................................... Features of the ASUS TX97 Motherboard ...................................... Introduction to ASUS TX97 Series of motherboards .
CONTENTS PNP and PCI Setup .................................................................... Details of PNP and PCI Setup .............................................. Load BIOS Defaults ................................................................... Load Setup Defaults ................................................................... Supervisor Password and User Password .................................. IDE HDD Auto Detection ..........................................................
FCC & DOC COMPLIANCE Federal Communications Commission Statement This device complies with FCC Rules Part 15. Operation is subject to the following two conditions: • • This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
I. INTRODUCTION I. INTRODUCTION (Manual / Checklist) How this manual is organized This manual is divided into the following sections: I. II. III. IV. V. VI.
II. FEATURES Features of the ASUS TX97 Motherboard II. FEATURES (Features) The ASUS TX97 is carefully designed for the demanding PC user who wants many intelligent features in a small package. This motherboard: • Intel Chipset: Features Intel's 430TX PCIset with I/O subsystems. • Multi-Processor/Multi-Speed Support: Intel Pentium® 75-200MHz (P55C-MMX™, P54C/P54CS), Cyrix® P166+ (Rev 2.7 & later), AMD-K5™ (PR75-133MHz).
II. FEATURES Introduction to ASUS TX97 Series of motherboards II. FEATURES (TX97 Series) Performance: • SDRAM Optimized Performance - ASUS TX97 series of motherboards support the new generation memory - Synchronous Dynamic Random Access Memory (SDRAM) which increases the data transfer rate from 264MB/s max using EDO memory to 528MB/s max.
II. FEATURES • • II. FEATURES (TX97 Series) • • • • • • 10 Voltage Monitoring and Alert - System voltage levels are monitored to ensure stable current to critical motherboard components. Voltage specifications are more critical for future processors, so monitoring is necessary to ensure proper system configuration and management.
II. FEATURES Parts of the ASUS TX97 Motherboard PS/2 Mouse, USB, IrDA Parallel & Serial Ports II.
III.
III. INSTALLATION Jumpers 1) 2) 3) 4) 5) 6) SIO BBLKW RTCLR VID0, VID1, VID2 FS0, FS1, FS2 BF0, BF1 p. 15 p. 15 p. 16 p. 17 p. 18 p. 18 Multi-I/O Selection (Enable/Disable) Flash ROM Boot Block Program (Disable/Enable) Real Time Clock RAM (Operation/Clear Data) CPU Voltage Selection CPU External Clock (BUS) Frequency Selection CPU:BUS Frequency Ratio p. 19 p. 21 p. 22 p.
III. INSTALLATION Installation Steps Before using your computer, you must complete the following steps: 1. 2. 3. 4. 5. 6. Set Jumpers on the Motherboard Install DRAM Modules Install the Central Processing Unit (CPU) Install Expansion Cards Connect Ribbon Cables, Cabinet Wires, and Power Supply Setup the BIOS Software 1. Jumpers III. INSTALLATION (Jumpers) Several hardware settings are made through the use of jumper caps to connect jumper pins (JP) on the motherboard.
III. INSTALLATION Jumper Settings 1. Onboard Multi-I/O Selection (SIO) You can selectively disable each onboard Multi-I/O item (floppy, serial, parallel, and IrDA) through Chipset Features Setup of BIOS SOFTWARE or disable all Multi-I/O items at once with the following jumper in order to use your own Multi-I/O card. Multi-I/O SIO Enable [1-2] (Default) Disable [2-3] Enable (Default) SIO 1 2 3 III. INSTALLATION (Jumpers) SIO 1 2 3 Disabled R Super Multi I/O Setting (Enable / Disable) 2.
III. INSTALLATION 3. Real Time Clock (RTC) RAM (RTCLR) The CMOS RAM is powered by the onboard button cell battery. To clear the RTC data: (1) Turn off your computer, (2) Move this jumper to “Clear Data,” (3) Move the jumper back to “Operation,” (4) Turn on your computer, (5) Hold down during bootup and enter BIOS setup to re-enter user preferences. Battery Test Jumper (RTCLR) You can test the battery’s current by removing this jumper and attaching a current meter to pins 2&3.
III. INSTALLATION Compatible Cyrix CPU Identification The only Cyrix CPU that is supported on this motherboard is labeled Cyrix 6x86 PR166+ but must be Revision 2.7 or later. Look on the underside of the CPU for the serial number. The number should read G8DC6620A or later. Pentium MMX (P55C) Intel Pentium (P54C) AMD-K6 (150MHz-233MHz) (75MHz-200MHz) (PR166 and faster) AMD-K5 (PR75-PR133) III. INSTALLATION (Jumpers) 5.
III. INSTALLATION 5. CPU External (BUS) Frequency Selection (FS0, FS1, FS2) These jumpers tell the clock generator what frequency to send to the CPU. These allow the selection of the CPU’s External frequency (or BUS Clock). The BUS Clock times the BUS Ratio equals the CPU's Internal frequency (the advertised CPU speed). 6. CPU to BUS Frequency Ratio (BF0, BF1) These jumpers set the frequency ratio between the Internal frequency of the CPU and the External frequency (called the BUS Clock) within the CPU.
III. INSTALLATION 2. System Memory (DIMM) This motherboard has three sockets to support 3.3Volt (power level) Unbuffered Synchronous DRAMs (SDRAM) DIMMs of either 8, 16, or 32, 64, or 128MB. Maximum memory of DIMMs must be 256MB or less. IMPORTANT: Memory speed setup is required through "Auto Configuration" in BIOS Chipset Setup of the BIOS SOFTWARE.
III. INSTALLATION DIMM Memory Installation Procedures: Insert the module as shown. Because the number of pins are different on either side of the breaks, the module will only fit in the orientation as shown. DRAM SIMM modules have the same pin contact on both sides. SDRAM DIMM modules have different pint contact on each side and therefore have a higher pin density. 20 Pins 60 Pins R 88 Pins III.
III. INSTALLATION 3. Central Processing Unit (CPU) The motherboard provides a 321-pin ZIF Socket 7 that is backwards compatible with ZIF Socket 5 processors. The CPU that came with the motherboard should have a fan attached to it to prevent overheating. If this is not the case then purchase a fan before you turn on your system. Apply thermal jelly to the CPU top and then install the fan onto the CPU.
III. INSTALLATION 4. Expansion Cards WARNING: Make sure that you unplug your power supply when adding or removing expansion cards or other system components. Failure to do so may cause severe damage to both your motherboard and expansion cards. First read your expansion card documentation on any hardware and software settings that may be required to setup your specific card.
III. INSTALLATION Both ISA and PCI expansion cards may need to use IRQs. System IRQs are available to cards installed in the ISA expansion bus first, and any remaining IRQs are then used by PCI cards. Currently, there are two types of ISA cards. The original ISA expansion card design, now referred to as “Legacy” ISA cards, requires that you configure the card’s jumpers manually and then install it in any available slot on the ISA bus. You may use Microsoft's Diagnostic (MSD.
III. INSTALLATION 5. External Connectors WARNING: Some pins are used for connectors or power sources. These are clearly separated from jumpers in "Map of the ASUS Motherboard." Placing jumper caps over these will cause damage to your motherboard. IMPORTANT: Ribbon cables should always be connected with the red stripe on the Pin 1 side of the connector. The four corners of the connectors are labeled on the motherboard. Pin 1 is the side closest to the power connector on hard drives and floppy drives.
III. INSTALLATION 3. Parallel Printer Connector (26 Pin Block) Connection for the included parallel port ribbon cable with mounting bracket. Connect the ribbon cable to this connection and mount the bracket to the case on an open slot. It will then be available for a parallel printer cable. You can enable the parallel port and choose the IRQ through "Onboard Parallel Port" in Chipset Features of the BIOS SOFTWARE.
III. INSTALLATION 5. CPU Cooling Fan Connector (FAN) This connector supports a 3-pin CPU cooling fan of 500mAMP (6WATT) or less with a minimum of 3,500RPM. Depending on the fan manufacturer, the wiring and plug may be different. The red wire should be Positive, the black should be Ground, and the yellow wire should be Rotation signal. WARNING: The CPU and/or motherboard will overheat if there is no airflow across the CPU and onboard heatsinks.
III. INSTALLATION 7. Primary / Secondary IDE connectors (Two 40-pin Block) These connectors support the provided IDE hard disk ribbon cable. After connecting the single end to the board, connect the two plugs at the other end to your hard disk(s). If you install two hard disks, you must configure the second drive to Slave mode by setting its jumper accordingly. Please refer to the documentation of your hard disk for the jumper settings.
III. INSTALLATION +5V GND +12V PG ORG RED YLW BLU BLK BLK BLK BLK WHT RED RED RED 9. AT Power Connector (12-pin block) This connector connects to a standard 5 Volt power supply. To connect the leads from the power supply, ensure first that the power supply is not plugged. Most power supplies provide two plugs (P8 and P9), each containing six wires, two of which are black. Orient the connectors so that the black wires are together.
III. INSTALLATION R Message LED SMI Lead ATX Power Switch* Reset SW +5V GND GND GND GND +5V NC GND LOCK GND +5V GND GND SPKR III. INSTALLATION (Connectors) 10. Message LED Lead (PANEL) This indicates whether a message has been received from a fax/modem. The LED will remain lit when there is no signal and blink when there is data transfer or waiting in the inbox). 11.
III. INSTALLATION 16. PS/2 Mouse, USB, Infrared Connector (18-pin block) If you are using a PS/2 mouse, USB, or Infrared devices, you must purchase an optional external connector set. The external connector set connects to the 18 pin block and mounts to an open slot on your computer's chssis. The system will direct IRQ12 to the PS/2 mouse if one is detected. If not detected, expansion cards can use IRQ12.
III. INSTALLATION Power Connection Procedures 1. After all jumpers and connections are made, close the system case cover. 2. Be sure that all switches are off (in some systems, marked with ). 3. Connect the power supply cord into the power supply located on the back of your system case according to your system user’s manual. 4. Connect the power cord into a power outlet that is equipped with a surge protector. III. INSTALLATION (Power Connections) 5.
IV. BIOS SOFTWARE Support Software FILELIST.TXT - View this file to see the files included in the support software. PFLASH.EXE - This is the Flash Memory Writer utility that updates the BIOS by uploading a new BIOS file to the programmable flash ROM chip on the motherboard. To determine the BIOS version, check the last four numbers of the code displayed on the upper left-hand corner of your screen during bootup. Larger numbers represent a newer BIOS file.
IV. BIOS SOFTWARE Main Menu 1. Save Current BIOS To File This option allows you to copy the contents of the flash memory onto a floppy disk. This gives you a backup copy of the original motherboard BIOS in case you need to reinstall it. Create a bootable DOS diskette without AUTOEXEC.BAT and CONFIG.SYS and save both PFLASH.EXE and the BIOS file(s) to it. Note: BIOS FEATURES SETUP Boot Sequence needs to be set to A first in order to boot from your disk drive A. 2.
IV. BIOS SOFTWARE Managing & Updating your Motherboard's BIOS Upon first use of the computer system: 1. Create a bootable system floppy diskette by typing [FORMAT A:/S] from the DOS prompt without creating "AUTOEXEC.BAT" and "CONFIG.SYS" files. 2. Copy PFLASH.EXE to your new diskette. 3. Run PFLASH.EXE from your new diskette and select option 1 "Save Current BIOS to File." Enter the "Current BIOS Revision:" for the file name.
IV. BIOS SOFTWARE 6. BIOS Setup The motherboard supports two programmable Flash ROM chips: 5 Volt and 12 Volt. Either of these memory chips can be updated when BIOS upgrades are released. Use the Flash Memory Writer utility to download the new BIOS file into the ROM chip as described in detail in this section. All computer motherboards provide a Setup utility program for specifying the system configuration and settings.
IV. BIOS SOFTWARE Load Defaults The Load BIOS Defaults option loads the minimum settings for troubleshooting. Load Setup Defaults, on the other hand, is for loading optimized defaults for regular use. Choosing defaults at this level will modify all applicable settings. A section at the bottom of the preceding screen displays the control keys for this screen. Take note of these keys and their respective uses.
IV. BIOS SOFTWARE Time To set the time, highlight the “Time” field and then press either / or <+>/<–> to set the current time. Follow the hour, minute and second format. Valid values for hour, minute and second are: (Hour: (00 to 23), Minute: (00 to 59), Second: (00 to 59). If you do not want to modify the current time, press three times to go to Hard Disks. NOTE: You can bypass the date and time prompts by creating an AUTOEXEC.BAT file.
IV. BIOS SOFTWARE Auto detection of hard disks on bootup For each field: Primary Master, Primary Slave, Secondary Master, and Secondary Slave, you can select Auto under the TYPE and MODE fields. This will enable auto detection of your IDE hard disk during bootup. This will allow you to change your hard disks (with the power off) and then power on without having to reconfigure your hard disk type.
IV. BIOS SOFTWARE BIOS Features Setup BIOS Features Setup consists of configuration entries that allow you to improve your system performance, or let you set up some system features according to your preference. Some entries are required by the motherboard’s design to remain in their default settings. IV. BIOS (Standard CMOS) A section at the lower right of the screen displays the control keys you can use. Take note of these keys and their respective uses.
IV. BIOS SOFTWARE HDD Sequence SCSI/IDE First (IDE) When using both SCSI and IDE hard disk drives, IDE is always the boot disk using drive letter C (default setting of IDE). This new feature allows a SCSI hard disk drive to be the boot disk when set to SCSI. This allows multiple operating systems to be used on both IDE and SCSI drives or the primary operating system to boot using a SCSI hard disk drive. Boot Sequence (C,A) This field determines where the system looks first for an operating system.
IV. BIOS SOFTWARE Video ROM BIOS Shadow (Enabled) This field allows you to change the video BIOS location from ROM to RAM. Relocating to RAM enhances system performance, as information access is faster than the ROM. C8000 - CBFFF Shadow to DC000 - DFFFF Shadow (Disabled) These fields are used for shadowing other expansion card ROMs. If you install other expansion cards with ROMs on them, you will need to know which addresses the ROMs use to shadow them specifically.
IV. BIOS SOFTWARE Chipset Features Setup This “Chipset Features Setup” option controls the configuration of the board’s chipset. Control keys for this screen are the same as in the BIOS Features Setup screen. NOTE: SETUP Defaults are noted in parenthesis next to each function heading. Details of Chipset Features Setup IV. BIOS (Chipset Features) Auto Configuration (60ns DRAM) The default setting of 60ns DRAM sets the optimal timings for items 2 through 9 for 60ns DRAM modules.
IV. BIOS SOFTWARE 8-bit I/O Recovery Time (1 BUSCLK) Timing for 8-bit ISA cards. Video BIOS Cacheable (Enabled) Allows the Video BIOS to be cached to allow faster execution. Leave on default setting of Enabled for better performance, otherwise Disabled. Memory Hole At Address (None) This features reserves either 14MB-16MB or 15MB-16MB memory address space to ISA expansion cards that specifically require this setting.
IV. BIOS SOFTWARE UART2 Use Infrared (Disabled) When enabled, this field activates the onboard infrared feature and sets the second serial UART to support the infrared module connector on the motherboard. If your system already has a second serial port connected to the onboard COM2 connector, it will no longer work if you enable the infrared feature. By default, this field is set to Disabled, which leaves the second serial port UART to support the COM2 serial port connector.
IV. BIOS SOFTWARE Power Management Setup IV. BIOS (Chipset Features) This “Power Management Setup” option allows you to reduce power consumption. This feature turns off the video display and shuts down the hard disk after a period of inactivity. NOTE: SETUP Defaults are noted in parenthesis next to each function heading. Details of Power Management Setup IV. BIOS (Power Management) Power Management (User Define) This field acts as the master control for the power management modes.
IV. BIOS SOFTWARE Video Off Method (DPMS OFF) This field defines the video off features. These options are available: DPMS OFF, DPMS Reduce ON, Blank Screen, V/H SYNC+Blank, DPMS Standby, and DPMS Suspend. The DPMS (Display Power Management System) features allow the BIOS to control the video display card if it supports the DPMS feature. Blank Screen only blanks the screen (or monitors without power management or “green” features).
IV. BIOS SOFTWARE PWR Up On Modem Act (Enabled) This field allows either settings of Enabled (default) or Disabled for powering up the computer (turns the ATX power supply on) when the modem begins receiving or transmitting data while the computer is off. AC PWR Loss Restart (Disabled) This field allows you to set whether you want your system to boot up after the power has been interrupted. Disabled leaves your system off after reapplying power and Enabled boots up your system after replying power.
IV. BIOS SOFTWARE PNP and PCI Setup This “PNP and PCI Setup” option configures the PCI bus slots. All PCI bus slots on the system use INTA#, thus all installed PCI cards must be set to this value. NOTE: SETUP Defaults are noted in parenthesis next to each function heading. Details of PNP and PCI Setup IV. BIOS (PnP and PCI) PNP OS Installed (No) This field allows you to use a Plug-and-Play (PnP) operating system to configure the PCI bus slots instead of using the BIOS.
IV. BIOS SOFTWARE DMA x Used By ISA (No/ICU) These fields indicate whether or not the displayed DMA channel for each field is being used by a legacy (non-PnP) ISA card. Available options include: No/ICU and Yes. The first option, the default setting, indicates either that the displayed DMA channel is not used or an ICU is being used to determine if an ISA card is using that channel.
IV. BIOS SOFTWARE Load BIOS Defaults This “Load BIOS Defaults” option allows you to load the troubleshooting default values permanently stored in the BIOS ROM. These default settings are non-optimal and disable all high performance features. To load these default settings, highlight “Load BIOS Defaults” on the main screen and then press . The system displays a confirmation message on the screen. Press and then to confirm. Press and then to abort.
IV. BIOS SOFTWARE Supervisor Password and User Password IV. BIOS (Passwords) These two options set the system passwords. “Supervisor Password” sets a password that will be used to protect the system and the Setup utility; “User Password” sets a password that will be used exclusively on the system. By default, the system comes without any passwords. To specify a password, highlight the type you want and then press . A password prompt appears on the screen.
IV. BIOS SOFTWARE IDE HDD Auto Detection This “IDE HDD Auto Detection” option detects the parameters of an IDE hard disk drive, and automatically enters them into the Standard CMOS Setup screen. IV. BIOS (Hard Drive Detect) Up to four IDE drives can be detected, with parameters for each listed inside the box. To accept the optimal entries, press or else select from the numbers displayed under the OPTIONS field (2, 1, 3 in this case); to skip to the next drive, press .
IV. BIOS SOFTWARE IMPORTANT: If your hard disk was already formatted on an older previous system, incorrect parameters may be detected. You will need to enter the correct parameters manually or use low-level format if you do not need the data stored on the hard disk. If the parameters listed differ from the ones used when the disk was formatted, the disk will not be readable. If the auto-detected parameters do not match the ones that should be used for your disk, do not accept them.
V. SUPPORT SOFTWARE ASUS TX97 Motherboard Series Support CD Run INSTALL.EXE in the root directory of this CD for the following options: LDCM Local Setup: Installs software to monitor the local system. The LANDesk Client Manager must be installed in order to use the hardware manager features. LDCM Administrator Setup: Installs software to monitor PC systems on the network within the same bridge address with the Local software installed. The administrator should install both Local and Administrator Software.
V. SUPPORT SOFTWARE • Custom Setup: (For Experienced Users) 1. Choose File | New from the pull-down menu of the “Untitled” screen. Type in a system name. 2. Make the appropriate settings on the right-hand side. Note following: - I2C and Network should not be modified - Currently only ATI Video cards can be monitored by LDCM, do not select Video ATI if you are using other video cards. 3. Choose LM78 from the pull-down menu.
V. SUPPORT SOFTWARE Desktop Management Interface (DMI) Introducing the ASUS DMI Configuration Utility This motherboard supports DMI within the BIOS level and provides a DMI Configuration Utility to maintain the Management Information Format Database (MIFD). DMI is able to auto-detect and record information pertinent to a computer’s system such as the CPU type, CPU speed, and internal/external frequencies, and memory size.
V. SUPPORT SOFTWARE Using the ASUS DMI Configuration Utility Edit DMI (or delete) Use the ←→ (left-right) cursors to move the top menu items and the ↑↓ (up-down) cursor to move between the left hand menu items. The bottom of the screen will show the available keys for each screen. Press enter at the menu item to enter the right hand screen for editing. “Edit component” appears on top. The reversed color field is the current cursor position and the blue text are available for editing.
V. SUPPORT SOFTWARE Save MIFD You can save the MIFD (normally only saved to flash ROM) to a file by entering the drive and path here. If you want to cancel save, you may press ESC and a message “Bad File Name” appears here to show it was not saved. Load MIFD You can load the disk file to memory by entering a drive and path and file name here. Load BIOS Defaults V. SOFTWARE (Using DMI Utility) You can load the BIOS defaults from a MIFD file and can clear all user modified and added data.
VI. ASUS PCI SCSI Cards VI. ASUS SCSI Cards (SCSI BIOS) Symbios SCSI BIOS and Drivers Aside from the system BIOS, the Flash memory chip on the motherboard also contains the Symbios SCSI BIOS. This Symbios SCSI BIOS works in conjunction with the optional ASUS PCI-SC200 controller card to provide Fast SCSI-2 interface when using compatible SCSI devices or the ASUS PCI-SC860 SCSI controller cards to provide Ultra-Fast SCSI-2 interface when using Ultra-Fast SCSI-2 devices.
VI. ASUS PCI SCSI Cards VI. ASUS SCSI Cards (Setup) Setting Up the ASUS PCI-SC200 & PCI-SC860 There are two jumper settings you may need to make on the ASUS PCI-SC200 to set it up. One setting assigns the PCI INT interrupt, the other sets the card’s termination. The ASUS PCI-SC860 has no jumper settings but you should read the “Terminator Requirements.” Setting the INT Assignment for the ASUS PCI-SC200 You must use PCI INT A setting in order to properly assign the ASUS PCI-SC200’s interrupt.
VI. ASUS PCI SCSI Cards VI. ASUS SCSI Cards (Jumpers) Terminator Settings for the ASUS PCI-SC860 Many SCSI devices including the ASUS PCI-SC860 use a set of onboard active resistors to terminate the devices at the ends automatically. Automatic termination requires that the SCSI devices be connected in a straight linear connection or “chain.” Connect SCSI devices to one or two of the SCSI connectors in a linear “chain” for auto termination of the ASUS PCI-SC860 to be effective.
VI. ASUS PCI SCSI Cards VI.
(This page was intentionally left blank) ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
(This page was intentionally left blank) 64 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
