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EP-PT21

Motherboard for

Pentium MMX ™

User's Manual

Order Number 41010007
November, 1997

Содержание EP-PT21

Страница 1: ...EP PT21 Motherboard for Pentium MMX User s Manual Order Number 41010007 November 1997 ...

Страница 2: ...ON REGARDING THE ELECTROMAGNETIC COMPATIBILITY AND SAFETY THE FOLLOWING STANDARDS WERE APPLIED EN50081 1 1992 GENERIC EMISSION STANDARDS EN550022 1994 EMISSION EN60555 2 1987 HARMONICS EN60555 3 1987 VOLTAGE FLUCTUATIONS EN50082 1 1992 GENERIC IMMUNITY STANDARD IEC 801 2 1984 ELECTROSTATIC DISCHARGE IMMUNITY IEC 801 3 1984 RADIATED IMMUNITY IEC 801 4 1988 ELECTRICAL FAST TRANSIENT The manufacturer...

Страница 3: ...EP PT21 Motherboard for Compatible PC User Manual Rev 1 3 Related Motherboard EP PT21 P C B Rev 2 1 Date Nov 1997 EP PT21 User s Manual i ...

Страница 4: ...equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Re orient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment to an outlet on a circuit different from ...

Страница 5: ...6 2 5 1 PS 2 Keyboard Connector and USB Port 6 2 5 2 Parallel Printer Port CON2 25 pin Female 6 2 5 3 Serial Ports COM1 COM2 9 pin Male Connector 7 2 5 4 AT ATX Power Supply Connectors 7 2 5 5 Floppy Drive Connector J9 34 pin block 8 2 5 6 Primary Secondary IDE connectors J6 J7 40 pin blocks 8 2 5 7 IDE Activity LED J22 pins 2 4 9 2 5 8 Front Panel Connector 9 2 5 9 CPU Cooling Fan Connector J5 12...

Страница 6: ...pters Chapter 1 Introduction This chapter presents the features of the motherboard what components and accessories should be included with it and describes the specifications of this product including a diagram of the motherboard layout Chapter 2 Installation This chapter shows how to install the motherboard and how to configure its various features and functions EP PT21 User s Manual ii ...

Страница 7: ...ng components Motherboard x 1 40 pin IDE connector flat cable x 1 34 pin floppy disk drive flat cable x 1 User s manual x 1 Flash ROM utility Bus master IDE driver diskette Optional Rear panel shielding Optional IrDA module Optional EP PT21 User s Manual i ...

Страница 8: ...nd PC97 System Memory Four 72 pin SIMMs and two 168 pin DIMM Slots support up to 256MB The system supports mixed memory technologies Extended Data Out EDO RAM Fast Page FP DRAM and SDRAM Synchronous DRAM On board Multi I O 1 x FDD Port supports up to 2 88MB 1 x Parallel Port LPT support ECP EPP 2 x High Speed Serial 16550 UART Ports 2 x Universal Serial Bus USB Ports 1 x PS 2 Keyboard Port 1 x PS ...

Страница 9: ...M LS 120 FDD etc Ultra DMA 33 mode and HDD Auto Detect Expansion Slots 4 x 32 bit PCI Bus Master Slots 3 x 16 bit ISA Slots Options Infrared IrDA Wireless Interface Kit LM75 CPU Temperature Gauge LM78 Hardware Monitor Chip Dimensions 210mm x 305mm Form Factor ATX Form Factor EP PT21 User s Manual i ...

Страница 10: ...ets on the motherboard A cooling fan is strongly recommended when installing P54C P54CTB P55C K5 K6 6x86 or M2 CPU to avoid overheating The motherboard requires a minimum of 8MB of system memory and can support a maximum of 256MB The onboard L2 Cache comprises 256KB or 512KB of static RAM SRAM to increase system performance The motherboard supports standard Fast Page FP EDO Extended Data Out or SD...

Страница 11: ...168 pin DIMM sockets Four 72 pin SIMM sockets Rear IrDA port COM1 serial port Parallel port COM2 serial port PS 2 Keybd Mouse AT power connector ATX power connector USB serial port Front panel jumper Clear CMOS jumper DIMM voltage select FDD Connector Primary IDE Secondary IDE Three ISA slots External battery connector LM78 hardware monitor Super I O chipset Lithium battery Super I O Chipset Four ...

Страница 12: ...ory Modules of 4MB 8MB 16MB 32MB and or 64MB to form a memory size between 8MB to 256MB The DRAM can be either 60ns or 70ns Fast Page Mode FPM Asymmetric or Symmetric Extended Data Output EDO SIMMs must be installed in pairs so that each bank contains two of the same size memory modules Install memory in any or all of the banks at any combination as shown in the table below EP PT21 User s Manual 2...

Страница 13: ...o prevent overheating If the CPU did not come with a fan 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 NOTE Without a fan the CPU can overheat and cause damage to both the CPU and the motherboard 2 4 1 Installing the CPU To install a CPU locate the ZIF socket and open it by first pulling the lever sideways away from the ...

Страница 14: ...cap over the appropriate pins on block J24 Pins 17 18 set 75MHz and pins 19 20 set 83 3MHz Finally set the CPU speed as a multiple of the bus speed on J24 Note that there are two captions next to each pair of pins in J24 The first one is a multiplication factor such as 2 0 and the second is a CPU speed based on the default bus speed of 66MHz Thus if you set a bus speed other than the default you s...

Страница 15: ...3 0 1 0 0 X 8 3 3 X 7 5 This would give you a bus speed of 75MHz and a CPU speed of 150MHz Note although the caption next to the jumper in this example reads x2 0 133 the actual speed is 75MHz X 2 0 or 150MHz EP PT21 User s Manual i Sets CPU type to P54C Selects 75MHz bus Sets CPU speed to 2 0X bus speed ...

Страница 16: ...nector pin blocks can cause damage to your motherboard 2 5 1 PS 2 Keyboard Mouse Connector and USB Port J17 2x 6 pin Female and J16 6 pin Female 2 5 2 Parallel Printer Port J14 25 pin Female You can enable or disable the parallel port LPT1 and choose its IRQ number in the BIOS setup 2 5 3 EP PT21 User s Manual 6 J16 USB Connector J17 Keyboard Mouse Connector J14 Parallel Port Support Standard USB ...

Страница 17: ...to configure 2 5 5 AT ATX Power Supply Connectors J23 is a standard 12 pin AT type or PS 2 type socket Be sure to attach the two connectors with the four black wires next to each other at the centre J12 is a standard ATX type power connector The ATX power connector can only be inserted the correct way EP PT21 User s Manual i COM1 Port J23 AT Power Connector J12 ATX Power Connector Keyhold COM2 Por...

Страница 18: ...ed IDE hard disk ribbon cable After connecting the single end to the board connect the plug s at the other end to your hard disk drive s If you install two hard disks you must configure the second drive to slave mode by setting its jumper accordingly Please refer to your hard disk documentation for the jumper settings The BIOS now supports SCSI device or IDE CD ROM boot up see Boot Sequence in the...

Страница 19: ...2 Installation 2 5 8 EP PT21 User s Manual i ...

Страница 20: ... indicator light on the system cabinet 2 5 10 Front Panel Connector 2 5 10 1 System Power LED J22 pins 9 11 13 This 2 pin connector lights the system power LED when the motherboard has power EP PT21 User s Manual 10 J22 J22 HDD LED pins 2 4 pins 11 13 for 2 pin connector pins 9 13 for 3 pin connector ...

Страница 21: ...m into a suspend mode often called green mode where system activity will be instantly decreased to save electricity and prolong the life of certain components when the system is not in use In this case the user must press and hold the Power Switch for a preset delay period to turn the system power off completely The delay and other Power Management parameters are determined in BIOS Setup This conn...

Страница 22: ...witch Lead J22 pins 18 20 This 2 pin connector connects to the case mounted reset switch for rebooting your computer without having to turn off power switch This method of cold booting is preferred in order to prolong the life of the system s power supply EP PT21 User s Manual 12 J22 J22 pins 6 8 Turbo LED RESET pins 18 20 ...

Страница 23: ...on the fan manufacturer the wiring and plug maybe different The red wire should be positive while the black should be ground Connect the fan s plug to the board taking into consideration the polarity of the connector NOTE The CPU and or motherboard will overheat if there is no airflow across the CPU and onboard heatsinks Damage may occur to the motherboard and or the CPU if these pins are incorrec...

Страница 24: ...cted for use with COM2 or IrDA When IrDA is selected in BIOS COM2 will be disabled Use the six pins as shown on the Back View and connect a ribbon cable from the module to the motherboard to the pin definitions 2 5 13 External Battery Connector J1 When using the external battery connector be very careful of the polarity positive and negative poles Also be sure to use only batteries rated at 4 5 6 ...

Страница 25: ...emporarily placing a jumper across pins 1 2 of this pin block will erase all user defined BIOS setting Be certain that system power is OFF before using this feature Default fix to Normal EP PT21 User s Manual i J4 CLEAR CMOS Pin 1 Normal Clear CMOS ...

Страница 26: ...EP PT21 User s Manual 100 POST CONSUMER RECYCLED PAPER ...

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