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2. The Mainboard

The mainboard is the large circuit board located at the bottom
of the system unit case. It is the heart of your computer system.
This board contains the central processing unit (CPU),
secondary cache subsystem, expansion slots, ports and
connectors for other computer components, and the system main
memory or RAM.

Your mainboard includes:

Intel Pentium (TM) Processor running at 60Mhz, 66Mhz, or 90 Mhz

Small Computer System Interface (SCSI) host adapter socket

Optional 256K or 512K secondary system cache

Integrated Windows compatible Business Audio that supports
ADPCM compression

Integrated floppy drive controller

Two local bus IDE hard drive interface ports supporting up to 4 IDE
devices

Enhanced Parallel Port

Two full-function, RS232, 16550-compatible serial ports

High-speed system memory; expandable from 2MB to 192MB

Flash BIOS; relocatable to 32-bit high-speed RAM for faster
performance

Five 16-bit ISA expansion slots

Three 32-bit PCI, local bus, high-speed expansion slots

Clock/calendar with on-board battery backup

Mainboard Features

Chapter 2 - The Mainboard

Summary of Contents for PANTERA

Page 1: ...R User s Guide The COMPLETE GUIDE TO HIGH PERFORMANCE COMPUTING WITH YOUR PANTERA COMPUTER...

Page 2: ...tation of incidental or consequential damages for consumer products and some states do not allow limitations on how long an implied warranty lasts so the above limitations or exclusions may not apply...

Page 3: ...al shipping charges Returned products must be in as new condition in original packing complete with all warranty cards manuals cables and other materials as originally shipped not modified or damaged...

Page 4: ...customer provided that the defective product or part is returned shipment prepaid to ZEOS All replaced products and parts become the property of ZEOS Replacement parts shall be similar new or service...

Page 5: ...this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment on and off the user is encouraged to try to correct the interference b...

Page 6: ...6...

Page 7: ...h Speed Expansion Slots 23 Secondary Cache Subsystem 23 Keyboard Selectable Speed 23 Serial Port 24 On Board Peripherals 24 Parallel Port 25 SCSI Port 25 Business Audio Ports 25 Mainboard Connectors 2...

Page 8: ...mory Regions 39 Boot Sequence Menu 40 Keyboard Auto repeat Rate 40 Keyboard Auto repeat Delay 40 Key Click 40 Numlock 40 Summary screen 40 Floppy Check 41 Floppy Swap 41 Boot Sequence 41 SETUP prompt...

Page 9: ...ow to Add System Cache Memory 56 8 How to Install an Optional SCSI Controller Chip 58 Hardware 58 Software 61 9 Special Notes on the Pantera 90 62 Mainboard Specifications 65 Mainboard Environmental S...

Page 10: ...tem unit case Chapter 2 The Mainboard gives detailed information about your mainboard Chapter 3 Using SETUP explains how to use the built in SETUP features of your BIOS to configure your system Chapte...

Page 11: ...the mainboard Chapter 9 Special Notes on the Pantera 90 describes special features of the 90 MHz Pantera system Mainboard Specifications lists technical details about your mainboard The Handy Cheat S...

Page 12: ...he Big Picture Reset Button Power LED Brightness Contrast Hard Disk HDD LED System Unit Power Switch the ON button Drive bays with CD ROM drive and 3 5 Floppy Drive Monitor Power Switch Turbo LED not...

Page 13: ...er 1 The Big Picture Cooling Fan Parallel Printer Port Connector LPT1 AC Power Cable Secondary Serial Port 25 pin COM2 Keyboard Connector Video Connector AC Power Cable Mouse Cable Connector 9 pin Ser...

Page 14: ...The Big Picture Reset Button Drive bays with CD ROM drive and 3 5 Floppy Drive Turbo LED not used Hard Disk HDD LED Power LED Turbo Button not used System Unit Power Switch the ON button Keyboard Lock...

Page 15: ...er 1 The Big Picture AC Power Cable Mouse Cable Connector 9 pin Serial COM1 Cooling Fan Secondary Serial Port 25 pin COM2 Keyboard Connector AC Power Cable Video Connector Parallel Printer Port Connec...

Page 16: ...c wrist strap attached to cabinet ground To open a desktop case 1 Turn off the monitor and system unit power Unplug the AC power cables and disconnect any other cables attached to the back of the syst...

Page 17: ...17 Chapter 1 The Big Picture Cover Chassis Plastic Bezel Mounting Screws...

Page 18: ...ground Opening a vertical case is almost identical to opening a desktop case To open a vertical case 1 Turn off the monitor and system unit power Unplug the AC power cables and disconnect any other ca...

Page 19: ...19 Plastic Bezel Cover Chassis Mounting Screws Chapter 1 The Big Picture...

Page 20: ...Drive Power Supply Expansion Boards Mainboard Expansion Slots The mainboard is the large circuit board at the bottom of the system unit case It is the heart of your system All of the other components...

Page 21: ...Tape Backup Units Chapter 1 The Big Picture Vertical systems have all the same components as desktop systems The figure shows the mainboard and common components inside a vertical system unit case Har...

Page 22: ...ace SCSI host adapter socket Optional 256K or 512K secondary system cache Integrated Windows compatible Business Audio that supports ADPCM compression Integrated floppy drive controller Two local bus...

Page 23: ...hances the performance of the CPU The integrated cache controller and a cache memory SIMMs provide the secondary cache subsystem for the system Either one 256K Cache SIMM or one 512K cache SIMM provid...

Page 24: ...nd microphone input jack Serial Port Your mainboard has two RS232C asynchronous serial ports which are generally referred to as COM1 9 pin and COM2 25 pin ports The serial ports are used to attach mic...

Page 25: ...t and control up to seven peripheral devices such as SCSI compatible disk drives tape backup units communications devices and CD ROM drives The SCSI port is a parallel multitasking interface which sup...

Page 26: ...Power supply input J2 Parallel Parallel printer port J3 COM2 Communications port B DB25 COM 2 J4 COM1 Communications port A DB9 COM 1 J5 Floppy drive Floppy disk drive connector J6 Primary hard drive...

Page 27: ...rd disk LED header CPU fan power connector Speaker output jack Audio board cable connector Mic Input Audio board cable connector PAL sound chip Primary IDE HDD header J6 Secondary IDE HDD header J7 SC...

Page 28: ...Pantera mainboard uses the SETUP program and the FLASH programming utility instead making upgrades and changes fast and easy FLASH1 The FLASH1 jumper allows or disallows re programming of the FLASH B...

Page 29: ...29 Mainboard Jumpers Diagram Chapter 2 The Mainboard...

Page 30: ...30...

Page 31: ...hrough the Extended BIOS software using the cursor keys and several function keys You can also load the original factory default settings from ROM load the current settings from battery backed CMOS or...

Page 32: ...e your system s hardware configuration such as installing a different hard drive or if the on board battery fails The SETUP Main Menu allows you to change Time and date Video System System memory conf...

Page 33: ...current date After completing the power up sequence the operating system updates the current date Diskette Drive A Specifies the size and capacity of the floppy disk drive installed as drive A Option...

Page 34: ...total amount of memory not used as System Memory and for Shadow RAM 384K is allocated for Shadow RAM For example a system with 2MB 2048KB installed BIOS shadowed will indicate 1024KB of extended memo...

Page 35: ...default is 16 Older hard drives and even some newer drives will not work properly if the number of sectors is set too high LBA Mode Control Enables or disables Logical Block Addressing allowing you to...

Page 36: ...change their settings to a different IRQ The SCSI I O port default address is 340h primary The alternate address is 140h but is not supported by the system BIOS at this time Synchronous This paramete...

Page 37: ...roller Parity is supported by most SCSI devices If this option is disabled the SCSI controller still generates parity but no interrupt will be generated on parity errors Disconnect Enables a SCSI devi...

Page 38: ...Enabling this option could improve video performance The default is enabled Note Not implemented on all systems Idt 7MP6157 256K Module or Motorola MCM67A618 512K Selects Dual Write Enable Mode for t...

Page 39: ...ly improves system performance System Shadow System shadow is always enabled Video Shadow Enables or disables copying of the video BIOS into RAM Shadowing the video BIOS may improve your video respons...

Page 40: ...key is pressed Numlock This option defines how the Num Lock key should work on power up The Num Lock key is used to determine whether the cursor keys or the numeric keys are active on the keypad Norm...

Page 41: ...nstalled hard drive Disk drive boot sequence determines which drive is checked first The default is A then C meaning the system will check floppy drive A first then if no operating system is present i...

Page 42: ...llows you to set the addresses interrupts and DMA channels for your serial parallel and audio ports Com Port A When either Com Port 1 or Com Port 2 is set to Auto the system will automatically set the...

Page 43: ...rd SCSI controller will automatically use IRQ11 If you use both the SCSI controller and the audio port be sure the audio port is set to IRQ9 PCI Devices The PCI Devices sub menu allows you to set spec...

Page 44: ...ill have to completely clear the CMOS memory and re enter your entire system configuration Write down your password and store it in a safe place The following security items are available Set Supervis...

Page 45: ...g of information The default is Supervisor Fixed disk boot sector When enabled write protects the boot sector on your hard drive to protect against viruses System Backup Reminder When enabled displays...

Page 46: ...card To add an expansion board 1 Turn off the monitor and system unit power and unplug the AC power cords from the wall outlet 2 Open the system unit case see How to Open a Desktop Case earlier 3 Fin...

Page 47: ...any internal cables to the expansion card 9 Close the system unit case and turn on the power Many expansion boards require you to run diagnostic or installation software before the new board will wor...

Page 48: ...disk Hard or fixed disks are permanently mounted inside your system unit case They are very fast hold a lot of files and are not removable without dissassembling your system Compact disks fit into CD...

Page 49: ...hey often share the same ribbon cable The data cable also has a red stripe Whenever connecting or disconnecting the ribbon cable be sure to attach the cable connectors so the red stripe is pointing to...

Page 50: ...the back of the drive and connects to the IDE controller port J6 or J7 on the mainboard Whenever connecting or disconnecting the ribbon cable be sure to attach the data cable so the red stripe points...

Page 51: ...r on floppy drives and hard disk drives It accepts DC power from the computer s internal power supply The data cable is a flat ribbon cable that connects the drive with some type of controller Some dr...

Page 52: ...uch faster and more efficiently when more RAM is available You add RAM by adding single in line memory modules SIMMs into SIMM sockets on the mainboard Your system mainboard will hold up to six SIMMs...

Page 53: ...16MB 4MB 4MB 4MB 4MB 16MB 4MB 4MB 2MB 2MB 2MB 2MB 24MB 4MB 4MB 4MB 4MB 4MB 4MB 32MB 16MB 16MB 32MB 8MB 8MB 8MB 8MB 32MB 8MB 8MB 4MB 4MB 4MB 4MB 64MB 32MB 32MB 64MB 16MB 16MB 16MB 16MB 64MB 16MB 16MB 8...

Page 54: ...commend using an anti static wrist strap attached to cabinet ground To Install SIMMs 1 Remove system cover see How to Open a Desktop Case earlier 2 Determine memory SIMM configuration refer to Table 2...

Page 55: ...he top edge toward the retainer clips until the clips snap into place 8 Reinstall system cover After completing the installation your ROM BIOS will determine the amount of memory installed however you...

Page 56: ...ory is easy and straightforward a few simple precautions will ease the installation Before you begin make note of your system s current SETUP parameters You can access the SETUP screen by pressing F2...

Page 57: ...to electrostatic discharge which can permanently damage your equipment Use an anti static wrist strap attached to cabinet ground Be sure to ground yourself by touching the system cabinet before beginn...

Page 58: ...g the AC power source and disconnect all peripherals and the monitor 2 Remove system cover see How to Open a Desktop Case earlier Caution Electrostatic Discharge can result in permanent damage to the...

Page 59: ...et on the mainboard and identify the pin 1 beveled corner of the socket If you need help finding the SCSI host adapter socket see the figure above Caution Make absolutely sure the SCSI host adapter ch...

Page 60: ...y press the chip into the socket Be careful not to bend the pins 7 Connect SCSI ribbon cable from SCSI port mainboard connector J8 to SCSI device Make sure the red stripe is toward pin 1 8 Replace cov...

Page 61: ...ttached devices are using IRQ11 change their settings to a different IRQ setting The SCSI I O port default address is 340h primary The alternate address is 140h but is not currently supported by the s...

Page 62: ...dule The Pantera 90 module plugs into the ZIF Zero Insertion Force socket on the mainboard In essence the daughterboard replaces the mainboard CPU The Intel Pentium 90 CPU plugs into the ZIF socket on...

Page 63: ...63 Chapter 9 Special Notes on the Pantera 90 ISA Expansion Slots Standoff screw spaces Pantera 90 Module ZIF arm on mainboard CPU socket Pentium 90 CPU with heat sink...

Page 64: ...64...

Page 65: ...y Cache Mapping Direct Secondary Cache Write policy Write back Secondary Cache Capacity 0KB 256KB or 512KB Cache SIMM Type 256KB or 512KB Cache SIMM Cache Speed 7ns 9ns Memory Type 1 2 4 8 16 32MB SIM...

Page 66: ...r J3 Header Pin Number DB25 Connector Pin Number 9 Pin Serial Port J4 Pin Assignment J4 Header Pin Number DB9 Connector Pin Number Signal 25 Pin Serial Port J3 Pin Assignment Signal 1 1 DCD Data Carri...

Page 67: ...ifications 1 DCD Data Carrier Detect 2 RXD Receive Data 4 DTR Data Terminal Ready 3 TXD Transmit Data 5 GND Ground 6 DSR Data Set Ready 7 RTS Request to Send 8 CTS Clear To Send 9 RI Ring Indicator 8...

Page 68: ...D7 Data Bit 7 19 10 ACK Acknowledge 21 11 Busy Busy 23 12 PE Paper Empty 25 13 SLCT Select 2 14 AFD Auto Feed 4 15 ERR Error 6 16 INIT Initialize 8 17 SLIN Select Input 10 18 GND Ground 12 19 GND Grou...

Page 69: ...ut 18 GND Ground 19 GND Ground 20 GND Ground 21 GND Ground 22 GND Ground 23 GND Ground 24 GND Ground 25 GND Ground 1 STB Strobe 2 PD0 Data Bit 0 3 PD1 Data Bit 1 4 PD2 Data Bit 2 5 PD3 Data Bit 3 6 PD...

Page 70: ...12 12 SCD5 Data Bit 5 14 14 SCD6 Data Bit 6 16 16 SCD7 Data Bit 7 18 18 SCDP Parity 25 25 Open not used 26 26 TER_PWR Termination Power 1 3 5 7 9 11 13 Same pin number GND Ground 15 17 19 24 27 31 as...

Page 71: ...files in a certain drive and directory DEL filename deletes a file MD newdirectory makes a new directory RD directoryname removes and erases an empty old directory RENAME oldfilename newfilename rena...

Page 72: ...valid numbers letters or symbols in a file name The asterisk represents any number of other characters For example BAK would represent any file with the extension BAK GONOW would represent all files...

Page 73: ...l component of a computer system such as a monitor printer keyboard or CPU Address Physical A specific location in memory where a unit record or sector of data is stored Application Program Computer p...

Page 74: ...r that depends on the computer for its operation Port A physical input output socket on a computer where you can connect a peripheral RAM Random Access Memory The part of memory that a computer can bo...

Page 75: ...Access 45 Diskette Drive A in SETUP 33 Diskette Drive B in SETUP 33 DRAM speed 38 Dual Write Enable Mode 38 E Enhanced Parallel Port 37 Expansion Board how to install 46 Extended Memory in SETUP 34 Ex...

Page 76: ...errors 41 R RAM how to add 52 RFI Suppression 6 S SCSI BIOS Enabled 36 SCSI Controller how to add 58 SCSI Port features 25 Secondary Cache Subsystem 23 Security 44 Serial Port features 24 Set Supervis...

Page 77: ...Late Changes The following changes arrived too late for printing There are no corrections at this time...

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