Texas Micro D486 User Manual (REL. 2)

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User’ s Manual

D486 Rel. II CPU Card

Page 2

Limited Warranty

(a)Texas Micro warrants that the goods sold by it hereunder will be free from defects in materials or workmanship, under normal use and service, for a period of one year from date of shipment. Said goods will meet the speciﬁcations in effect at the time of manufacture. T exas Micro’ s sole obligation under this w arranty shall be , at its option, to repair or replace, without charge, any defective component part of such product, within a reasonable time period.

(b)Texas Micro shall not be liable under this warranty for (i) the goods that Buyer alleges are defective and have been repaired or altered by someone other than Texas Micro’s designated personnel or authorized representative, unless such repair or alteration was effected pursuant to prior written approval of T exas Micro, or (ii) where the Buyer fails to notify Texas Micro of any alleged defect within the period of warranty, or (iii) where the Buyer fails to return defective item to Texas Micro, in Houston, Texas , freight prepaid or (iv) where equipment has been altered or damaged in any way which Texas Micro reasonably determines to personally affect the performance and reliability, or where the equipment has been subject to misuse, neglect or accident.The rights and remedies granted to Buyer under this paragraph constitute Buyer’s sole and exclusive remedy against Texas Micro, its ofﬁcers, agents and employees for negligence, inexcusable delay, breach of warranty, express or implied, or for any default whatsoever relating to the condition of the product or Texas Micro’s duties to eliminate any errors.

This warranty is in lieu of any other warranty, whether expressed, implied or statutory, including, but not limited to any warranty for ﬁtness of purpose, merchantability, or freedom from infringement or the like, and any warranty otherwise arising out of any proposal, speciﬁcations or sample. Texas Micro neither assumes nor authorizes any person to assume for it any other liability.

Every effort has been made to ensure that the information provided in this manual is complete and accurate. However, technical inaccuracies or typographical errors may be inadvertently included. Texas Micro assumes no responsibility for any errors that may be contained in this document. Texas Micro, Inc., makes no promise to update or keep current the information contained in this document. Information in this document, including product speciﬁcations, is subject to change without notice.

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IMPORTANT!

Always use caution when handling/operating your system. Only qualiﬁed, experienced, authorized electronics service personnel should access the unit’s interior. Use extreme caution when installing/removing components. If you have any

questions, please contact Texas Micro’s Technical Support department at 1-800-627-8700 or 1-713-541-8200 between 7 a.m. and 6 p.m., Central Time, USA. You will be prompted to press “3” to enter the Technical Support queue.

A LIRE IMPERATIVEMENT

Quand vous manipulez ou utilisez votre système, faites preuve en toutes circonstances de la plus grande prudence. Seuls des techniciens électroniciens qualiﬁés et expérimentés peuvent avoir accès à l’intérieur de votre système. Si vous désirez poser des questions complémentaires, n’hésitez pas à prendre contact avec le Département d’assistance technique de Texas Micro au (USA) 1-713-541-8200.

BITTE ZUERST LESEN

Seien Sie immer vorsichtig, wenn Sie mit Ihrem System umgehen oder es bedienen. Nur qualiﬁziertes, erfahrenes Personal fär Elektronik sollte am Inneren des Gerätes arbeiten. Für Ihre Sicherheit sind Hinweise zur V orsicht, Win Sie irgenwelche F ragen haben, setzen Sie sich bitte nit der Abteilung fr technische Unterstützung von Texas Micro unter der Rufnummer (USA) 1-713-541-8200 in Verbindung.

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FCC Notice

This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at the user’s own expense.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Changes or modiﬁcations not expressly approved by Texas Microsystems, Inc., could void the user’s authority to operate the equipment.

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Preface

Texas Micro’s Model D486 CPU Card is a 33-100 MHz single-board computer with multi-function I/O control, including IDE and ﬂoppy drive controllers plus serial and parallel ports. The D486 is functionally equivalent to the IBM/AT computer and can be inserted into a passive backplane conﬁgured in accordance with the IBM/AT Bus standard. It can be operated with all AT-compatible accessory cards, such as serial and parallel I/O cards, video and disk controllers, etc. Features of the D486 include:

• Supported processors include 33 and 50 MHz 486DX, 50 and 66 MHz 486DX2, and 100 MHz DX4

• Secondary write-back cache support with 128 KBytes of data RAM (expandable to 256 KBytes)

• Up to 64 MBytes of DRAM supported in 4 x 36 SIMM modules

• 128 KBytes of ﬂash memory for BIOS and user-application ﬁeld upgrades

• Auxiliary boot ROM (in instances of Flash programming error or failure)

• IDE hard drive interface, allowing control of high-speed, high-capacity disk drives

• 3.5” and 5.25” ﬂoppy disk drive controller

• Two (2) IBM PC/AT-compatible RS232 serial ports, each with internal baud rate generation

• One (1) parallel port with bi-directional transfer capability or unidirectional printer directed output

IBM is a registered trademark of International Business Machines Corporation. PC and AT are registered trademarks of International Business Machines Corporation.

Phoenix BIOS is a trademark of Phoenix Technologies, Inc. MS-DOS is a registered trademark of Microsoft Corporation. All other tradenames referenced are the service mark, trademark or registered trademark of the respective manufacturer.

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HOW TO USE THIS MANUAL

Thank you for purchasing Texas Micro’ s D486 CPU Card. Your D486 User’s Manual is designed to provide easy access to information you need to operate the D486 CPU Card. It’s also designed to accommodate all levels of users - from the novice to the experienced professional.

The D486 is conﬁgured for operation at the Texas Micro factory. When you receive your D486, it’s ready to be installed and used. This manual will guide you step-by-step through the procedures required to operate the D486.

INEXPERIENCED USERS

Computer novices should use this manual as a training and reference tool as well as an installation/operation guide. Begin by reading Chapter 1, Getting Started. This chapter will describe the D486 and its components. It will also provide information necessary to verify the D486’s hardware conﬁguration. Continue with Chapters 2, D486 Installation, and 3, Connecting Peripherals. By completing the steps outlined in Chapters 1, 2 and 3, you will have prepared the D486 for operation. Proceed with Chapter 4, Power-up.

Power-up will tell you what happens when power is introduced to the D486 and will guide you to Chapter 5, Using the Setup Utility, which will tell you how to verify the D486’s conﬁguration. After you complete this chapter, you will be ready to place the D486 into operation. Later, you may decide that you need extra memory. Chapter 6, Memory Conﬁguration, provides information.

Finally, Chapter 7, General Maintenance, provides guidelines for returning Texas Micro products for service or repair. If you have any questions, call our Technical Support Department at 1-800-627-8700 or 1-713-541-8200 between 7 a.m. and 6 p.m., Central Time. You will be prompted to press “3” to enter the Technical Support queue.

ADVANCED USERS

The D486 User’s Manual provides a “quickstart” path for advanced users. Read the QuickStart segment following Chapter 4.

The QuickStart segment will give a short outline of the installation and startup procedure. It will direct you to check switch and jumper settings as well as the D486 Setup Utility conﬁguration. Appropriate chapters will be referenced.

Once you’ve veriﬁed the hardware conﬁguration, installed the board, introduced power to the D486 and checked the Setup Utility, you can place the D486 into full operation. You can then use the manual as a reference guide.

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CHAPTER 1 Getting Started 10

1.1 D486 Components 12

1.2 Before You Install the D486 13

1.2.1 Checking the Dip Switch Settings 14

1.2.2 Checking the Jumper Block Settings 16

CHAPTER 2 D486 Installation 20

CHAPTER 3 Connecting Peripherals 22

3.1 Serial Ports 23

3.2 Parallel Port 27

3.3 Keyboard Cable Header/Connector 28

3.4 Hard Drive Header/Connector 30

3.5 Floppy Drive Header/Connector 32

CHAPTER 4 Power-up 34

4.1 BIOS 34

4.2 Diagnostics 35

4.3 Rebooting the D486 35

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CHAPTER 5 Using the Setup Utility 40

5.1 Basic Options Menu 43

5.1.1 Time and Date 44

5.1.2 Floppy Disks 45

5.1.3 Fixed Disks 49

5.1.4 Video Adapter 54

5.1.5 Keyboard 56

5.1.6 Shadow RAM 61

5.1.7 Boot Options 63

5.1.8 Password Options 67

5.1.9 Park Hard Drive 70

5.1.10 Flash It! 71

5.2 Advanced Options 71

5.2.1 Serial Ports 72

5.2.2 Parallel Ports 75

5.2.3 Cache 79

5.2.4 DRAM Speeds 84

5.2.5 Bus-DMA-I/O Speeds 85

5.2.6 Memory Remapping 94

5.2.7 Miscellaneous 95

5.3 Switch SW1-3 - Reload Default Setup Utility Values 96

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CHAPTER 6 Memory Conﬁguration 97

CHAPTER 7 General Maintenance 100

7.1 Lithium Battery 101

7.2 Return Procedure 102

7.3 Technical Support 102

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CHAPTER 1 Getting Started

This chapter is designed to provide you with enough information to verify the conﬁguration of the D486 and prepare the board for installation and operation. However , advanced users can skip to the Quickstart for Advanced Users segment immediately following Chapter 4.

Let’s begin by describing some of the D486’s main components. Figure 1 is an overall view of the D486.

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FIGURE 1 D486 CPU.

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Getting Started

1.1 D486 Components

The D486 contains the components normally found on a plug-in CPU card: a microprocessor, “headers” and “connectors,” a “dip switch” block, “jumper” blocks, “SIMM” sockets, etc. Figure 1 and other illustrations throughout the manual provide the location of these components.

The microprocessor is the “brain” of the D486, where basic arithmetic, logic and control functions are processed. The D486 supports a 33-50 MHz 486DX, a 50-66 MHz 486DX2, or a 100 MHz DX4 processor.

Headers (also called “header/connector”) are components used to connect peripherals (via connecting cables) to the D486. For example, locate the “IDE Hard Drive” header on the D486 (see Figure 1). This header serves as a hard drive controller; you would use an appropriate cable to connect an IDE hard drive to this header . Other headers located on the D486 include:

• a ﬂoppy drive header

• a serial port header (also called “UART 2”) used to connect

serial devices to the D486

• a keyboard header

Connectors are also used to connect external components to the D486, but, unlike headers, connectors are located on the I/O bracket at the end of the D486 board (which will make them accessible when you install the board, as we will discuss later). These include a serial port connector (“UART 1”) and a parallel port connector.

The D486 dip switch block, known as SW1, is located at the top of the board. It contains four (4) small dip switches, each of which controls a different function. These switches are discussed in detail in Section 1.2.1.

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Before You Install the D486

Jumper blocks are small electronic components that contain pins, or small electronic leads, some of which are connected via jumpers (or “shunts”), small conductors used to divert electrical current. These jumper blocks have certain functions, depending on their conﬁguration. We’ll also discuss jumper blocks in Section 1.2.2.

SIMM (Single Inline Memory Module) sockets are located on the left side of the D486 Board. SIMM’s are “sticks” of DRAM (Dynamic Random Access Memory) that can be inserted into these sockets, providing extra memory. SIMM’s are discussed in Chapter 6.

1.2 Before You Install the D486

Now that you’re familiar with some key D486 components, let’s discuss those components you’ll need to check before you install your D486.

First, it is important to protect yourself and your equipment before you perform any of the following procedures. Never touch the D486 while it is installed in the chassis and power is ON. You should check the D486 conﬁguration before you install the board. However, if the D486 is already installed in your system, remove power by turning all power switches OFF and disconnecting all power cords from their power sources. Follow all safety precautions outlined by the chassis manufacturer. Only qualiﬁed, experienced

electronics personnel should access the unit’s interior.

Also, do not touch the D486 unless you are wearing a staticdissipative device such as the grounding wrist strap provided with your D486 CPU. Static electricity can damage sensi-

tive D486 components. Before you install the D486, check the dip switch and jumper set-

tings outlined in Sections 1.2.1 and 1.2.2. Pay particular attention to the dip switch settings; the jumpers are preconﬁgured at the factory and are appropriate for most applications. Memory SIMM’s are also installed at the factory.

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Getting Started

1.2.1 Checking the Dip Switch Settings

Locate Switch Block SW1, the four-switch block positioned at the top of the D486 board. Note that these switches are numbered, from right to left, one (1) through four (4). Thus, the switch on the far right side of the block is SW1, position 1, or SW1-1.

CLOSED

OPEN

SW1-1 is used to set the default monitor type. When SW1-1 is CLOSED, the D486 is conﬁgured to run with acolor monitor. When it is OPEN, SW1-1 is set to the monochrome monitor position. The D486 is shipped with this switch CLOSED. If you’re using a color monitor, be sure that SW1-1 is CLOSED. If you’re using a monochrome monitor, OPEN this switch (of course, make sure that no power is being fed to the D486 before you touch the switch).

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1-4 1-3 1-2 1-1

SW1

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Before You Install the D486

SW1-2 controls the on-board ROM access. If you OPEN this switch, the Flash memory (special memory described in Appendix A at the back of this manual) is enabled and the auxiliary ROM is disabled. If this switch is CLOSED, the auxiliary ROM is enabled, and the Flash memory is disabled. The D486 is shipped with this switch

OPEN. SW1-3 is used in special cases when the CMOS RAM (Complemen-

tary Metallic Oxide Semiconductor Random Access Memory) becomes corrupted. This condition is usually accompanied by a “lock-up” of the system. The factory default values for D486 operation must then be reloaded into CMOS RAM. Under normal con- ditions, SW1-3 should remain in the OPEN position. However, when factory default values must be reloaded, see Chapter 5.3 for proper procedures.

SW1-4 is used to conﬁgure the on-board I/O port:

• SW1-4 closed: I/O address is 370h

• SW1-4 open: I/O address is 270h

The default setting is 270h.

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Getting Started

1.2.2 Checking the Jumper Block Settings

As discussed earlier, jumper blocks are small components containing electronic leads (called pins) sometimes connected by jumpers (small conductors). These blocks have speciﬁc functions that are affected by the presence and position of a jumper within the block. Locations of these blocks are shown in the ﬁgure below.

The following paragraphs provide more information about these jumper blocks. If, after reading the descriptions , you w ant to change the default jumper settings, do so with caution. Only experienced

electronics personnel should attempt to change these jumper settings. Make sure that no power is being fed to the D486 and that you are wearing a grounding wrist strap or other static-dissipative device. If you have questions, call Texas

Micro’s Technical Support Department (see page 3).

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Before You Install the D486

Jumper Blocks JP1, JP2, JP3, and JP14 are three-pin blocks that determine the installed processor type. The following table provides options and conﬁguration settings for these blocks.

...determines

This conﬁguration...

this processor

type

JP1 - Pin 1 jumpered to Pin 2

DX4 JP2 - Pin 2 jumpered to Pin 3 JP3 - Pin 1 jumpered to Pin 2 JP14 - PIn 1 jumpered to Pin 2

JP1 - Pin 1 jumpered to Pin 2

486DX, 486DX2 JP2 - Pin 2 jumpered to Pin 3 JP3 - Pin 1 jumpered to Pin 2 JP14 - PIn 2 jumpered to Pin 3

Jumper Block JP4 is a three-pin block that allows you to conﬁgure the system for compatibility with your processor’s speed. If you connect Pins 1 and 2 with a jumper, your system will run a 33100MHz DX, DX2 or DX4 processor (this is the default setting and should not be changed).

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Getting Started

Jumper Blocks JP5, JP6, JP7 and JP8 are three-pin blocks that determine the cache size conﬁguration. The following chart provides options and conﬁguration settings for these blocks.

This conﬁguration...

JP5 - Pin 1 jumpered to Pin 2

...determines

this cache size

64 KByte cache JP6 - Pin 1 jumpered to Pin 2 JP7 - Pin 1 jumpered to Pin 2 JP8 - No jumper

JP5 - Pin 2 jumpered to Pin 3 JP6 - Pin 1 jumpered to Pin 2

128 KByte cache

(default) JP7 - Pin 2 jumpered to Pin 3 JP8 - Pin 1 jumpered to Pin 2

JP5 - Pin 2 jumpered to Pin 3

256 KByte cache JP6 - Pin 2 jumpered to Pin 3 JP7 - Pin 1 jumpered to Pin 2 JP8 - Pin 2 jumpered to Pin 3

Jumper Block JP9, a four-pin single-row block, allows you to select the type of backup battery source employed by the D486. By connecting Pin 1 to Pin 2 via a jumper , you select the D486 on-board battery, which is capable of saving CMOS RAM contents and maintaining time of day for approximately 100,000 hours. If you choose to provide a separate battery, remove the jumper between Pins 1 and 2 (remember to remove all power and use a grounding device).

The factory default is Pin 1 jumpered to Pin 2, on-board battery enabled.

Note: Battery voltage should be between 3.0 and 3.5 volts, with a 7.5 uA current drain at 3.5 volts.

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Before You Install the D486

Jumper Block JP10 is a two-pin header that provides output for connecting a light-emitting diode (LED) to indicate hard drive activity. Pin 1 of this jumper is the anode (the positive electrode); Pin 2 is the cathode.

Jumper Block JP11 is a three-pin strip used to determine if the watchdog timer will be enabled or disabled. If Pin 1 is connected to Pin 2, the watchdog timer will reset the system in the absence of 80486 CPU activity. If Pin 2 is connected to Pin 3, the watchdog timer is disabled. The factory default for this block is Pin 2

jumpered to Pin 3. Jumper Block JP12 is a three-pin strip used to select the system

reset delay period upon a watchdog time out. With Pin 1 connected to Pin 2, the delay is 1.2 seconds. If Pin 2 is connected to Pin 3, the delay is 150 msec. When no pins are connected, the delay is 600 msec. The factory default is Pin 2 connected to Pin 3, 150

msec delay. Jumper Block JP13 is a three-pin strip used as a DX4 clock multi-

plier. If Pin 2 is connected to Pin 3, the DX4 processor will run at twice the oscillator frequency. If Pin 1 is connected to Pin 2, the DX4 processor will run at three times the oscillator frequency.

Remember, only experienced electronics personnel should attempt to change jumper settings. Make sure that no power is being fed to the D486 and that you are wearing a grounding wrist strap. If you have any questions, please contact our Technical Support department (see page 3).

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CHAPTER 2 D486 Installation

Once you have checked all switches and jumper blocks to ensure they match the desired conﬁguration, you’re ready to install the D486 into an AT-compatible chassis backplane. However, before installing the D486 Card, consult the documentation provided with the chassis. Installation instructions should be followed precisely.

CAUTION: Always remove power from the system before installing the D486. Follow all power-down procedures outlined in the chassis’ user’s manual. To ensure no injury occurs, disconnect the power cord from the power source. Only qualiﬁed, experienced electronics personnel should access the interior of a chassis.

CAUTION: The components of the D486 Card are very sensitive to static discharge. Therefore, Texas Micro provides a grounding wrist strap to help remove all static electricity before touching the components. W hile out of the unit, D486 components should be placed on a static-dissipative surface or into a static-shielding bag.

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Before You Install the D486

The procedure for installing the D486 into a Texas Micro chassis is described below.

1. Remove power from the chassis and disconnect all power cords.

Follow all power-down procedures outlined in your chassis’ user’s guide.

2. Remove the chassis cover, then detach the circuit card hold-

down bracket. This bracket stretches across the tops of the circuit cards and holds them in place.

3. Locate the desired bus location for installation (user’s choice,

although it is suggested that a location providing maximum distance between boards is chosen to allow proper ventilation).

4. Remove the I/O bracket spacer from the rear of the chassis. This

spacer occupies the area where the card’s I/O bracket is accessed through the back of the chassis.

5. Attach the internal system keyboard connector cable to the

D486 keyboard connector (see Section 3.3).

6. Place the board ends into the appropriate card guide and card-

end slot in the chassis. Lower the D486 into position and carefully push the card-edge connector into the slot. Ensure that the I/O bracket is accessible through the back of the chassis.

7. Secure the card-edge I/O bracket to the hold-down lip.

8. Attach any required cables.

9. After installing the D486 and any other add-in cards desired,

secure all PC boards by appropriately positioning the card holddown bracket and securing it into place with the hardware provided for this purpose.

10. To install the D486 into a passive backplane not manufactured

by Texas Micro, follow the instructions provided in this manual and the installation information provided by the backplane manufacturer.

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CHAPTER 3 Connecting

P eripherals

The D486 provides several headers/connectors for attaching peripheral devices to the board:

• Two (2) serial ports

• One (1) parallel port

• A keyboard interface header/connector

• An IDE hard drive header/connector

• A ﬂoppy drive header/connector

This chapter supplies information and locations for each of these components. Pinouts of each connector are also included. A pinout identiﬁes the function of each pin of a connector. Please note that, while this information is valuable to electronics personnel, it is not crucial to the everyday operation of the D486. As long as the proper cable is used and the connecting plug is properly inserted, a supported peripheral should be operable when used with the D486.

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Serial Ports

Please note the following cautions when connecting peripherals to the D486 CPU.

CAUTION: Always remove power from the system before connecting peripherals to the D486. To ensure no personal injury occurs, disconnect the power cord from the power source. Only qualiﬁed, experi-

enced electronics personnel should access the interior of a chassis.

CAUTION: The components of the D486 Card are very sensitive to

static discharge. Therefore, Texas Micro provides a grounding wrist strap to help remove all static electricity before touching the components. W hile out of the unit, D486 components should be placed on a static-dissipative surface or into a static-shielding bag.

3.1 Serial Ports

Let’s begin with the two serial ports. Serial ports allow you to connect serial devices (a serial mouse, serial printers, etc.) to the D486 via appropriate serial cables. Serial ports are also known as COM ports or UART (Universal Asynchronous Receiver/Transmitter) ports. Note: These are 16450 UART’s.

Note that one serial port (UART 1), labeled “J4” in Figure 1, is located on the edge of the card (on the I/O bracket). This means that you can access UART 1 through the back of the chassis after the D486 is installed.

Note that one serial port (UART 2), labeled “J3,” is located on the card’s front surface (see Figure 2). If you’ve already installed your D486, you must remove the chassis cover to access this port. Consult your chassis documentation for procedures on removing the chassis cover, but remember to remove power from the system

and unplug the power cord before you access the interior of the chassis. Most importantly, only qualiﬁed, experienced electronics personnel should access the interior of a chassis.

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Connecting Peripherals

Be sure to use the proper cable when connecting a serial device to the D486 (9-pin DB9 interface connector - Part No. SCF1). More information about serial ports can be found in Section 5.2.1.

The graphic at the bottom of Figure 2 describes the proper pin assignments when wiring a 25-pin connector to a 9-pin connector. If you have any questions about this procedure, call Texas Micro (see page 3 for details).

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Serial Ports

FIGURE 2

Pin Description

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

To wire a 25-pin connector to a 9-pin connector, use the following table.

DB9 DB25 Description Pin Pin

1 8 DCD (Data Carrier Detect) 2 3 RXD (Receive Data) 3 2 TXD (Transmit Data) 4 20 DTR (Data Terminal Ready) 5 7 GND (Signal Ground) 6 6 DSR (Data Set Ready) 7 4 RTS (Request To Send) 8 5 CTS (Clear to Send) 9 22 RI (Ring Indicator)

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FIGURE 3

Connecting Peripherals

Pin Description

1 DCD (Data Carrier Detect) 2 DSR (Data Set Ready) 3 RX (Receive Data) 4 RTS (Request To Send) 5 TX (Transmit Data) 6 CTS (Clear To Send) 7 DTR (Data Terminal Ready) 8 RI (Ring Indicator) 9 GND (Signal Ground) 10 VCC +5 (Not Connected)

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FIGURE 4

Parallel Port

3.2 Parallel Port

The parallel port (Connector J6) is normally used for connecting a printer to the D486. This port is a 25-pin connector located on the right edge of the D486 (see Figure 4). Connect the printer cable to this port for printer operation (of course, onlyafter removing system power and disconnecting the power cord).

More information on parallel ports and their conﬁguration can be found in Section 5.2.2.

Pin Number Description

1 -Strobe 2 + Data Bit 0 3 + Data Bit 1 4 + Data Bit 2 5 + Data Bit 3 6 + Data Bit 4 7 + Data Bit 5 8 + Data Bit 6 9 + Data Bit 7 10 - Acknowledge 11 + Busy 12 + Paper End 13 + Select 14 - Auto Feed 15 - Error 16 - Init. Printer 17 - Select Input 18-25 Ground

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Connecting Peripherals

3.3 Keyboard Cable Header/Connector

The D486 provides a keyboard cable header/connector at the bottom edge of the card. This is an 8-pin header located at J5. See Figure 5 for the location and pinout of this header.

Note that some connector manufacturers use “reverse” pin numbers. For the D486, Pin 1 is on the left edge of the keyboard connector (when viewing the chip side of the board with the I/O bracket on the right).

The sockets on the Texas Micro keyboard connector cable are numbered in reverse order when compared to the pinout of the D486 keyboard cable connector. For example, Socket 8 of the connector cable corresponds with Pin 1 of the D486 keyboard cable connector, Socket 7 of the cable corresponds with Pin 2 of the connector, etc. Figure 5 provides proper connector procedures for the keyboard interface cable. Ensure that the pins on the keyboard connector correspond with the pins on the cable connector.

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Keyboard Cable Header/Connector

FIGURE 5 Keyboard connector.

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Connecting Peripherals

3.4 Hard Drive Header/Connector

Two (2) Integrated Device Electronics (IDE) hard disk drives can be attached to the D486 board via J1 and a 40-conductor cable of a maximum length of two (2) feet. The pinout of J2, a 40-pin connector, is provided in Figure 6.

Note: The “red stripe” on the 40-pin cable should be near Pins 1 and 2 on the 40-pin connector. The IDE hard drive(s) will not work correctly if the cable is plugged in backwards.

If the D486 has been installed, accessing this header requires removal of the chassis cover. Consult your chassis documentation for procedures on removing the chassis cover, but remember to

remove power from the system and unplug the power cord before you access the interior of the chassis. Only qualiﬁed, experienced electronics personnel should access the interior of a chassis.

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FIGURE 6

Hard Drive Header/Connector

Pin Number Description

1 Reset, output 3 + Data 7, input/output 5 + Data 6, input/output 7 + Data 5, input/output 9 + Data 4, input/output 11 + Data 3, input/output 13 + Data 2, input/output 15 + Data 1, input/output 17 + Data 0, input/output 19 Ground 21 No connection 23 -I/O Write, output 25 -I/O Read, output 27 No connection 29 No connection 31 +IRQ14, input 33 +ADDR1, output 35 +ADDR0, output 37 -CS0, output 39 Activity Light, output

Pin Number Description

2 Ground 4 + Data 8, input/output 6 + Data 9, input/output 8 + Data 10, input/output 10 + Data 11, input/output 12 + Data 12, input/output 14 + Data 13, input/output 16 + Data 14, input/output 18 + Data 15, input/output 20 No connection 22 Ground 24 Ground 26 Ground 28 +ALE, output 30 Ground 32 I/O CS16, output 34 No connection 36 +ADDR2, output 38 CS1, output 40 Ground

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Connecting Peripherals

3.5 Floppy Drive Header/Connector

Two ﬂoppy disk drives can be attached to the D486 at J2 with a 34conductor ﬂat cable no more than three (3) feet in length. Two connectors are spaced the desired distance at the drive end of the cable, with Conductors 10 through 16 separated from the remainder of the cable and twisted 180° between the two drive connectors.

Note: The “red stripe” on the 40-pin cable should be near Pins 1 and 2 on the 40-pin connector. The ﬂoppy drive(s) will not work correctly if the cable is plugged in backwards.

The two installed drives may be any combination of 360 KByte and

1.2 MByte 5.25” drives or 720 KByte and 1.44 MByte 3.5” drives. Both drives should be jumper-conﬁgured as Drive 1. DOS controls the ﬂoppy disk drives; therefore, consult the DOS manual for detailed information on disk operations. Consult Figure 7 for the J4 pinout.

If the D486 has been installed, accessing this header requires removal of the chassis cover. Consult your chassis documentation for procedures on removing the chassis cover, but remember to

remove power from the system and unplug the power cord before you access the interior of the chassis. Only qualiﬁed, experienced electronics personnel should access the interior of a chassis.

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FIGURE 7

Floppy Drive Header/Connector

Pin Description

1 Ground 3 Ground 5 Ground 7 Ground 9 Ground 11 Ground 13 Ground 15 Ground 17 Ground 19 Ground 21 Ground 23 Ground 25 Ground 27 Ground 29 Ground 31 Ground 33 Ground

Pin Description

2 Disk speed change, output 4 No connection 6 No connection 8 Index detect, input, active low 10 Motor enable Drive A, output, active low 12 Select Drive B, output, active low 14 Select Drive A, output, active low 16 Motor enable Drive B, output, active low 18 Head step pulse, output, active low 20 Head step pulse, output, active low 22 Write data, output, active low 24 Write gate, output active low 26 Track 0 detect, input, active low 28 Write protect sense, input, active low 30 Read data, input, active high 32 Head select, output 34 Diskette change detect, input, active low

D486 CPU Card User’s Manual 33

Page 34

CHAPTER 4 P ower-up

After all jumpers and switches have been checked, the D486 has been installed and all desired peripheral devices have been connected to the board, the D486 is ready for power-up.

To power -up the D486, simply connect all required power cables and turn the system on. Consult your chassis documentation for more information on power cable connection. However, before you powerup your system, ensure that the operating system you will be using is available on either Drive C or a diskette in Drive A.

4.1 BIOS

When you power the system up, the D486 BIOS (Basic Input Output System) will perform checks and diagnostics, then search for an operating system. The BIOS will not search for an operating system on drives other than C or A. Also, if a diskette that does not contain the operating system is engaged in Drive A, an error message will be displayed. Remove the diskette and strike any key to “boot” (restart) the system.

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Diagnostics

4.2 Diagnostics

Upon power-up, the BIOS performs initialization routines, calculating memory size and conﬁguration data to load into CMOS (Complimentary Metallic Oxide Semiconductor) memory. The BIOS then performs internal diagnostics to compare the D486’s current physical conﬁguration with the conﬁguration information recorded in CMOS memory during setup. If inconsistencies exist, BIOS error messages are displayed.

Some errors noted during power-up may be quickly corrected by verifying the setup information (see Chapter 5). Errors of greater complexity or a more technical nature may require the aid of trained technical personnel. Contact Texas Micro’s Technical Support Department for assistance (see page 3). Upon completion of the power-on diagnostics tests, the D486 loads the operating system from disk or other mass-storage device. However, if CMOS RAM contents are incorrect, the D486 will prompt you to invoke the Setup Utility (see Chapter 5).

4.3 Rebooting the D486

If you wish to reboot the D486, three (3) methods are acceptable:

1. Cycle power off and on.

2. Press and hold the CTRL, ALT and DEL keys.

3. Depress the system’s reset switch.

Using any of these methods to reboot the D486 will result in system memory data loss. Therefore, it is suggested that, where possible, all processing be completed before reboot.

Next, you need to check all the conﬁguration settings for the board before you begin using it. Turn to Chapter 5 for information on the D486 Setup Utility.

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Page 36

QuickStart for Advanced Users

This segment of the manual provides a “quickstart” feature for advanced computer users. Included are procedures for:

• checking dip switch default settings

• checking jumper block default settings

• installing the D486

• connecting peripherals to the D486

• powering the system up

• accessing the Setup Utility

To conﬁgure the D486 Board, perform the following:

1. Check dip switch settings.

Locate Switch Block SW1. The following are default settings.

• SW1-1 CLOSED - color monitor

• SW1-2 OPEN - ﬂash ROM access

• SW1-3 OPEN - board uses setup conﬁguration you pro-

vide through the Setup Utility (see Chapter 5)

• SW1-4 OPEN - I/O address is 270h

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Rebooting the D486

Check jumper defaults. Locate the D486 jumper blocks. The defaults for these blocks

are as follows: JP1, JP2, JP3, JP13, JP14 - 486DX or 486DX2 processor

installed.

JP1 - Pins 1 and 2 connected JP2 - Pins 2 and 3 connected JP3 - Pins 1 and 2 connected JP13 - Pins 1 and 2 connected JP14 - Pins 2 and 3 connected

JP4 - 33-66 MHz DX or DX2 operation - Pins 1 and 2

connected.

JP5, JP6, JP7 and JP8 - 128 KByte cache operation.

JP5 - Pins 2 and 3 connected JP6 - Pins 1 and 2 connected JP7 - Pins 2 and 3 connected

JP8 - Pins 1 and 2 connected JP9 - On-board battery enabled - Pins 1 and 2 connected. JP11 - Watchdog timer responds to clock - Pins 2 and 3

connected. JP12 - 150 msec reset delay - Pins 2 and 3 connected.

D486 CPU Card User’s Manual 37

Page 38

Power-up

Install the D486. To install the D486:

• Remove power from the system by turning all power

switches OFF and disconnecting the power cord from the power source. Only qualiﬁed, experienced electronics personnel should access the interior of a chassis.

• Remove static electricity by wearing a static-dissipative

device (such as a grounding wrist strap). Place the board on static-dissipative surfaces ONLY.

• Remove the I/O bracket spacer from the rear of the

chassis.

• Connect the internal keyboard cable to the D486 keyboard

connector (see Section 3.3).

• Carefully lower and push the board into a card slot.

Ensure that the I/O bracket is accessible through the back of the chassis.

• Secure the card-edge I/O bracket to the hold-down lip.

• Connect any additional cables.

4. Connect peripherals to the D486.

Before you connect any peripherals to the D486, make sure that no power is being applied to the D486 Board and the peripherals.

CAUTION: Always remove power from the system and peripherals before connecting the peripherals. To ensure no injury occurs, disconnect all power cords from their power sources. Only qualiﬁed, experienced electronics personnel should access the interior of a chassis.

CAUTION: The components of the D486 Card are very sensitive to static discharge. Therefore, Texas Micro provides a grounding wrist strap to help remove all static electricity before touching the components. While out of the unit, the components should be placed on a static-dissipative surface or into a static-shielding bag.

Consult Chapter 3 for connector locations and pinouts.

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Rebooting the D486

Power the system up. The BIOS will perform power-on checks, operate diagnostics

and invoke the internal setup routine. It will then direct the media device to search for and load the operating system.

During the memory test, press <S> to enter the on-board Setup Utility. After the memory test, the Setup Utility will be displayed. V erify the settings in the Setup Utility to conﬁgure your board properly. Turn to Chapter 5 for procedures. After completing this step, you can begin using your system.

D486 CPU Card User’s Manual 39

Page 40

CHAPTER 5 Using the Setup

Utility

After all switches and jumpers have been checked, the D486 has been installed, peripherals have been connected and power has been turned on, you are ready to access the D486 Setup Utility.

The D486 Setup Utility is a special set of commands residing in EPROM and used to set the computer time, date and conﬁguration data. The Setup Utility can be accessed in two (2) ways:

• By pressing <S> during memory tests, or

• By pressing F2 when prompted by the BIOS during the

power-up operation. This occurs if the BIOS encounters errors when trying to use the Setup Utility information (if desired, the user may press the F1 key to instruct the BIOS to continue its diagnostics checks and attempt to load the operating system).

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Page 41

The D486 Setup Utility begins by displaying the screen pictured in Figure 8. This screen is comprised of three (3) components:

• Options Menu

• Summary information

• Hot key descriptions

The Options Menu is located on the left side of the screen. This menu contains a list of system parameters you can modify to meet your system requirements. Use the UP/DOWN ARROW keys to move the cursor up and down the list. When the cursor is on the desired item, press the <ENTER> key to modify settings for that speciﬁc topic.

The “summary information” area displays current system settings and is located to the right of the Options Menu.

“Hot key” descriptions appear at the bottom of the screen. Press any of these keys to perform its assigned function.

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FIGURE 8

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................10:18:28

Date................................................. Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A............................................. 3

/2Inch, 1.44 MB

Drive B............................................. Not Installed

Hard Disk 1...................................... Type 2 is 20 MB

Hard Disk 2...................................... Not Installed

Video Adapter..................................VGA/EGA

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Operational

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Floppy:....................... On

Video:......................... On

↑ (previous) ↓ (next) F5 (color on/off) Esc (save/reboot) Enter (execute)

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Page 43

Basic Options Menu

5.1 Basic Options Menu

Locate the “Basic Options” menu. This list outlines all the parameters you can change through the Setup Utility. This menu is pictured below.

Basic Options

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Note the “Advanced Options” item. Choosing this item will cause a new menu of options to be displayed. We’ll discuss this menu later in this manual. For now, let’s concentrate on each of the Basic Options menu items. Remember, use the UP/DOWN ARROW keys to highlight an item, then the <ENTER> key to select that item.

D486 CPU Card User’s Manual 43

Page 44

FIGURE 9

Using the Setup Utility

5.1.1 Time and Date

This option allows you to set the time and date in the batterybacked clock/calendar, which is used to set the DOS time and date before the operating system is loaded.

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

↑(previous) ↓ (next) Spacebar (change) Enter (execute)

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Weekday..........................................Monday

Drive A............................................. 3

Drive B............................................. Not Installed

Time: 09:43:02

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Date: Aug 30, 1993

Video Adapter..................................VGA/EGA

Weekday: Monday

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Set Time and Date

Floppy:....................... On

Video:......................... On

/2Inch, 1.44 MB

44 D486 CPU Card User’s Manual

Page 45

5.1.2 Floppy Disks

FIGURE 10 - A

Basic Options Menu

This feature allows you to conﬁgure the ﬂoppy drive subsystem. The ﬁrst menu asks if you want to enable the D486 on-board controller. In addition, the Setup Utility will request the drive types for ﬂoppy drives A: and B:. Finally, you will be asked if you want to enable or disable ﬂoppy drive conﬁguration errors. If disabled, this option directs the system to ignore errors it detects in the ﬂoppy disk conﬁguration during power-up operation.

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Weekday..........................................Monday

Onboard Floppy Controller

Drive A............................................. 3

Drive B............................................. Not Installed

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Video Adapter..................................VGA/EGA

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Off On

Floppy:....................... On

Video:......................... On

/2Inch, 1.44 MB

D486 CPU Card User’s Manual 45

Page 46

FIGURE 10 - B

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Select Drive A: Type

Drive A............................................. 3

Drive B............................................. Not Installed

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Video Adapter..................................VGA/EGA

Not Installed

Inch, 360 KB

Inch, 1.2 MB

Inch, 720 KB

Inch, 1.44 MB

/2Inch, 1.44 MB

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Floppy:....................... On

Video:......................... On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

46 D486 CPU Card User’s Manual

Page 47

FIGURE 10 - C

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Select Drive B: Type

Drive A .............................................3

Drive B .............................................Not Installed

Hard Disk 1 ......................................SCSI Installed

Hard Disk 2 ......................................Not Installed

Video Adapter..................................VGA/EGA

Not Installed

Inch, 360 KB

Inch, 1.2 MB

Inch, 720 KB

Inch, 1.44 MB

/2Inch, 1.44 MB

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Boot Errors: Keyboard: ...................On

Floppy:........................On

Video: .........................On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

D486 CPU Card User’s Manual 47

Page 48

FIGURE 10 - D

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................10:18:28

Date.................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A............................................. 3

Floppy Conﬁguration Errors

Drive B............................................. Not Installed

Hard Disk 1...................................... SCSI Installed

Off On

/2Inch, 1.44 MB

Hard Disk 2...................................... Not Installed

Video Adapter..................................VGA/EGA

Base Memory ..................................640K

Extended Memory ...........................3072K

Floating Point Unit...........................Not Present

Fast Boot......................................... No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................None

Boot Errors: Keyboard:................... On

Floppy:.......................On

Video:......................... On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

48 D486 CPU Card User’s Manual

Page 49

Basic Options Menu

5.1.3 Fixed Disks

This option allows the user to conﬁgure the ﬁxed (hard) disk subsystem. When you select this ﬁeld, you will be asked whether you want to turn the D486 IDE controller on or off. In addition, the Setup Utility will request the drive type for hard disk 1 (drive C:) and hard disk 2 (drive D:).

An “Auto ID” feature is invoked if you press F2 while the “Hard Disk 1 Type” or “Hard Disk 2 Type” menu is displayed. This option will analyze your hard drive and provide a drive type ID, gleaned from the standard hard drive parameter table (HDPT), that most closely matches the characteristics of your hard drive.

To accept this drive type ID, press ENTER. Pressing the PgUp key will invoke a search through the HDPT for the next closest match.

If you continue to press the PgUp key, the menu will eventually display the user-conﬁgurable types “46” and “47.” Types 46 and/or 47 will also be offered if no HDPT match is found when the “Auto ID” feature is invoked. These types allow you to set the hard disk conﬁguration ﬁelds to match the particular characteristics of your hard disks.

If you want to change any of the ﬁelds offered by type 46 or 47, press ENTER to accept the values shown. Again, invoke the “Fixed Disks” option from the “Basic Options” menu, then re-enter the “Set Hard Drive” menu. You may now set the ﬁelds of this menu to the desired values.

D486 CPU Card User’s Manual 49

Page 50

FIGURE 11 - A

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A .............................................3

Drive B .............................................Not Installed

Hard Disk 1 ......................................SCSI Installed

Onboard IDE Interface

Off On

/2Inch, 1.44 MB

Hard Disk 2 ......................................Not Installed

Video Adapter..................................VGA/EGA

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Boot Errors: Keyboard: ...................On

Floppy:........................On

Video: .........................On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

50 D486 CPU Card User’s Manual

Page 51

FIGURE 11 - B

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A .............................................3

Drive B .............................................Not Installed

Hard Disk 1 ......................................SCSI Installed

Hard Disk 2 ......................................Not Installed

Video Adapter..................................VGA/EGA

Set Hard Disk 1 Type

Type...............................44

Cylinders.....................820

Heads.............................. 6

Landing Zone..............820

/2Inch, 1.44 MB

Write Precomp ...............-1

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Sectors..........................17

Size...............................40

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Boot Errors: Keyboard: ...................On

Floppy:........................On

Video: .........................On

Pg Up (next) Pg Down (previous) F2 (Auto ID) Enter (execute)

D486 CPU Card User’s Manual 51

Page 52

FIGURE 11 - C

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A .............................................3

Drive B .............................................Not Installed

Hard Disk 1 ......................................SCSI Installed

Hard Disk 2 ......................................Not Installed

Video Adapter..................................VGA/EGA

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Drive Reports:

Cylinders ................1024

Set Hard Disk 1 Type

Heads...........................2

Sectors.......................40

Type ..............................47

Drive Table Match:

Cylinders..................... 699

Type............................17

Heads.............................. 7

Cylinders ..................977

Landing Zone.............. 700

Heads...........................5

Landing Zone: ..........977

Write Precomp............256

Write Precomp..........300

Sectors.......................... 17

Sectors.......................17

Size............................... 40

Size ............................40

USER CONFIGURABLE PARAMETERS

Auto ID

/2Inch, 1.44 MB

Boot Errors: Keyboard: ...................On

Floppy:........................On

Video: .........................On

Pg Up (Next match) ESC (Exit) ENTER (Accept)

52 D486 CPU Card User’s Manual

Page 53

FIGURE 11 - D

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time................................................ 10:18:28

Date ................................................ Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday......................................... Monday

Auto ID

Drive A ............................................ 3

Drive B ............................................ Not Installed

Hard Disk 1 ..................................... SCSI Installed

Hard Disk 2 ..................................... Not Installed

Video Adapter ................................. VGA/EGA

Drive Reports:

Cylinders.................1024

Heads ...........................2

Sectors........................40

Optional user conﬁgurable:

/2Inch, 1.44 MB

Type ............................47

Base Memory.................................. 640K

Extended Memory........................... 3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Cylinders.................1053

Heads ...........................2

Landing Zone:.........1053

Write Precomp............ -1

Sectors........................40

Size.............................41

Password Protection ....................... None

Boot Errors: Keyboard: .................. On

Floppy:....................... On

Video: ........................ On

Pg-Up (type=47) ENTER (Accept) ESC (Exit)

D486 CPU Card User’s Manual 53

Page 54

5.1.4 Video Adapter

FIGURE 12 - A

Using the Setup Utility

This feature allows you to specify the type of video adapter installed in your system. In addition, video conﬁguration errors can be disabled, allowing you to run your system without a video adapter.

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Weekday..........................................Monday

Drive A............................................. 3

Drive B............................................. Not Installed

Hard Disk 1......................................SCSI Installed

Hard Disk 2......................................Not Installed

Video Adapter..................................VGA/EGA

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Select Video Adapter Type

VGA/EGA CGA 40 x 25 CGA 80 x 25 Monochrome

Floppy:....................... On

Video:......................... On

/2Inch, 1.44 MB

54 D486 CPU Card User’s Manual

Page 55

FIGURE 12 - B

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A.............................................3

Drive B.............................................Not Installed

Hard Disk 1......................................SCSI Installed

Video Conﬁguration Errors

Off On

/2Inch, 1.44 MB

Hard Disk 2......................................Not Installed

Video Adapter..................................VGA/EGA

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock ..................Off‘

Password Protection........................None

Boot Errors: Keyboard:...................On

Floppy:........................On

Video:.........................On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

D486 CPU Card User’s Manual 55

Page 56

Using the Setup Utility

5.1.5 Keyboard

This option provides several functions. The ﬁrst menu allows you to enable or disable keyboard conﬁguration errors. If you choose to disable this option, the system will ignore errors it detects in the keyboard conﬁguration during the power-up operation.

The next three menus offer you the ability to set the “Typematic” delay and rate. “Typematic delay” refers to the period that elapses between the time a key is held down until it begins to repeat. “Typematic rate” refers to the rate at which the character will repeat.

Note: Occasionally, .exe programs and TSR’s that set the Typematic functions are run from the autoexec.bat ﬁle. If used, these programs have precedence over the Setup Utility’s “Typematic” functions.

56 D486 CPU Card User’s Manual

Page 57

FIGURE 13 - A

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Keyboard Conﬁguration Errors

Drive A............................................. 3

Drive B............................................. Not Installed

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Off On

/2Inch, 1.44 MB

Video Adapter .................................VGA/EGA

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Floppy:....................... On

Video:......................... On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

D486 CPU Card User’s Manual 57

Page 58

FIGURE 13 - B

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Set Keyboard Typematic Rates?

Drive A............................................. 3

Drive B............................................. Not Installed

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Yes No

/2Inch, 1.44 MB

Video Adapter .................................VGA/EGA

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Floppy:....................... On

Video:......................... On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

58 D486 CPU Card User’s Manual

Page 59

FIGURE 13 - C

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A............................................. 3

Drive B............................................. Not Installed

Keyboard Typematic Delay

250 msec

/2Inch, 1.44 MB

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Video Adapter .................................VGA/EGA

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Floppy:....................... On

Video:......................... On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

D486 CPU Card User’s Manual 59

Page 60

FIGURE 13 - D

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A............................................. 3

Drive B............................................. Not Installed

Keyboard Typematic Rate

2.1 chars/sec

/2Inch, 1.44 MB

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Video Adapter .................................VGA/EGA

Base Memory..................................640K

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Floppy:....................... On

Video:......................... On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

60 D486 CPU Card User’s Manual

Page 61

Basic Options Menu

5.1.6 Shadow RAM

This option requires you to specify where optional ROM-BIOS code is to be located and whether it is cacheable or not. When you select this option, a memory map that displays memory in 16 KByte blocks is displayed. If a ROM is found within that 16 KByte location, the Setup Utility will display the word “ROM,” “SHADOW,” or “SHADOW + CACHED,” where:

• ROM - the system will execute code directly from the

EPROM on the option card, or

• SHADOW - the system will copy the code from the

EPROM into DRAM at the same address, allowing code to run from the DRAM on the CPU card (dramatically improving the performance of the system).

• SHADOW + CACHED - in addition to begin shadowed,

the code is eligible for memory caching (further improving the performance of the system).

A window will also appear to the right of the map. This window displays the following for each option ROM found in the system:

• Starting address of the option ROM

• Length of the option ROM

• Current status (ROM, SHADOW or SHADOW + CACHE)

This window allows you to toggle between running the option ROM from the EPROM in which it resides (by selecting ROM), directing the system to copy it into shadow RAM at power-up (by selecting SHADOW) and allowing that RAM space to be cached (by selecting SHADOW + CACHED).

D486 CPU Card User’s Manual 61

Page 62

FIGURE 14

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Spacebar (change) Enter (execute)

SHADOW +

CACHED

ROM

Shadow RAM Deﬁnitions

F000-FFFF (CPU BIOS)

E000-EFFF

DC00 D800 D400

Address: C000:0 D000 CC00

C800 C400 C000

Shadow Select

Length: 32K

Status: SHADOW

62 D486 CPU Card User’s Manual

Page 63

Basic Options Menu

5.1.7 Boot Options

This function is a series of windows that allows you to set the following items:

• Boot Drive Sequence - you can specify the sequence in

which drives are accessed (useful when attempting to load an operating system).

• Enable the “FAST BOOT” option. FASTBOOT will bypass

memory tests and other conﬁguration steps to speed up the system power-up operation.

• Set status of NumLock key at boot - if a 101-key keyboard

is installed, this option directs the BIOS to enable or disable the NumLock key before booting.

D486 CPU Card User’s Manual 63

Page 64

FIGURE 15 - A

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A.............................................3

Drive B.............................................Not Installed

Hard Disk 1......................................SCSI Installed

Hard Disk 2......................................Not Installed

Video Adapter..................................VGA/EGA

Set Boot Drive Sequence

Drive A: then C: Drive C: then A: Drive A: Only Drive C: Only

/2Inch, 1.44 MB

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Boot Errors: Keyboard: ...................On

Floppy:........................On

Video: .........................On

↑(Previous) ↓ (Next) Enter (execute) Esc (quit/save)

64 D486 CPU Card User’s Manual

Page 65

FIGURE 15 - B

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

↑(Previous) ↓ (Next) Enter (execute) Esc (quit/save)

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Weekday..........................................Monday

Drive A.............................................3

Drive B.............................................Not Installed

Hard Disk 1......................................SCSI Installed

Hard Disk 2......................................Not Installed

Video Adapter..................................VGA/EGA

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Boot Errors: Keyboard: ...................On

Do you want Fast Booting?

No Yes

Floppy:........................On

Video: .........................On

/2Inch, 1.44 MB

WARNING: If you enable “Fast Boot,” you must turn it off before making any changes to your CMOS settings (or add RAM memory). Otherwise, your changes will not be saved.

D486 CPU Card User’s Manual 65

Page 66

FIGURE 15 - C

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time ................................................ 10:18:28

Date................................................. Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

101-Key Keyboard NumLock at Bootup

Drive A............................................. 3

Drive B............................................. Not Installed

Hard Disk 1...................................... SCSI Installed

Hard Disk 2...................................... Not Installed

Video Adapter .................................VGA/EGA

Base Memory..................................640K

Off On

Set Boot Drive Access

Drive A: then C: Drive C: then A: Drive A: Only Drive C: Only

/2Inch, 1.44 MB

Extended Memory...........................3072K

Floating Point Unit........................... Not Present

Fast Boot......................................... No

Boot Drive Sequence ...................... Drive A: then C:

101-Keyboard NumLock.................. Off‘

Password Protection........................ None

Boot Errors: Keyboard:................... On

Floppy:....................... On

Video:......................... On

↑(Previous) ↓ (Next) Enter (execute) Esc (quit/save)

66 D486 CPU Card User’s Manual

Page 67

Basic Options Menu

5.1.8 Password Options

This feature allows you the option of having no password protection, requiring a password to enter the Setup Utility, or requiring a password to enter Setup and boot. The password is entered from this menu, and you are prompted to enter it again for veriﬁcation. The password may consist of from one to 12 characters. Letters A to Z (case-sensitive) and numbers 0 to 9 are accepted. If a password is already entered, you must know the password in order to change it.

WARNING: Setting Switch SW1-3 to ON will delete all password protection. In addition, you will force the CPU to load “default” CMOS settings, which may not match your system’s conﬁguration. Use the “Flash It!” option (described in Section 5.1.10) to designate your setup conﬁguration as the system default values.

D486 CPU Card User’s Manual 67

Page 68

FIGURE 16 - A

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Password Protect Options

Drive A.............................................3

Drive B.............................................Not Installed

Hard Disk 1......................................SCSI Installed

Hard Disk 2......................................Not Installed

None Setup Only Setup and System Boot

/2Inch, 1.44 MB

Video Adapter..................................VGA/EGA

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Boot Errors: Keyboard: ...................On

Floppy:........................On

Video: .........................On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

68 D486 CPU Card User’s Manual

Page 69

FIGURE 16 - B

Basic Options Menu

Model D486 100 MHz BIOS Version 4.0.1.0

Basic Options

Time.................................................10:18:28

Date .................................................Aug 30, 1993

Time and Date Floppy Disks Fixed Disks Video Adapter Keyboard Shadow RAM Boot Options Password Options Password Edit Advanced Options Park Hard Drive Flash It!

Weekday..........................................Monday

Drive A.............................................3

Password Edit

/2Inch, 1.44 MB

Drive B.............................................Not Installed

New Password

Hard Disk 1......................................SCSI Installed

................... *****

Hard Disk 2......................................Not Installed

Video Adapter..................................VGA/EGA

Base Memory...................................640K

Extended Memory............................3072K

Floating Point Unit............................Not Present

Fast Boot..........................................No

Boot Drive Sequence.......................Drive A: then C:

101-Keyboard NumLock...................Off‘

Password Protection ........................None

Boot Errors: Keyboard: ...................On

Floppy:........................On

Video: .........................On

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

D486 CPU Card User’s Manual 69

Page 70

Using the Setup Utility

5.1.9 Park Hard Drive

When used, this feature allows you to park the heads on each hard drive and protect the drives whenever it is necessary to move or transport the computer. The menu will display a “Continue Park?” prompt. Press “Y es” to park the hard drives , “No” to discontinue this feature.

Hard Disk Head Parking Utility

Before moving your system, it is recommended that you park the heads on each hard drive.

NOTICE: Power off the system when done. Continue Park? Yes No

70 D486 CPU Card User’s Manual

Page 71

Advanced Options

5.1.10 Flash It!

“Flash It!” permits all selections to be programmed permanently into BIOS memory. That is, in the event of a CMOS power failure or when switch 1-3 is closed, the selections that were current when the “Flash It!” option was selected will be the new “default” values that the system will “load.”

IMPORTANT! While the system is “ﬂashing” BIOS memory, it is imperative that the reset switch not be pressed and power is not turned off until the “Flash It!” operation has completed. In the event that the ﬂash operation is interrupted, switch 1-2 must be closed to invoke the auxiliary BIOS in order for the system to operate. It will then be necessary to perform another ﬂash operation which, when successful, will enable switch 1-2 to be opened and control to be returned to the ﬂashed BIOS.

5.2 Advanced Options

Choosing the “Advanced Options” item from the “Basic Options” menu will cause a new menu of options to be displayed. We’ll discuss these options in the following sections. The Advanced Options menu is displayed below.

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

D486 CPU Card User’s Manual 71

Page 72

Using the Setup Utility

5.2.1 Serial Ports

You can select the port addresses for Serial Port 1 (UART1) and Serial Port 2 (UART2) using this option. The choices are as follows:

• 3F8

• 2F8

• 3E8

• 2E8

• Disabled

Note: 3F8 and 3E8 must use IRQ4, and 2F8 and 2E8 must use

IRQ3. These items are not user-selectable. If Serial Ports 1 and 2 are given the same base port address,

a window will prompt you to make a choice that will resolve the conﬂict. You cannot further conﬁgure the system until the serial ports no longer share the same address.

72 D486 CPU Card User’s Manual

Page 73

FIGURE 17 - A

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface.................... On

AT Bus Speed ................................. CPU Osc Freq ÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States.......................... 2 wait states

I/O Recovery Time.......................... 2 bus clocks

CT206 Read/Write Wait States....... 2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States................... 2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time ................ 2-3 CPU clocks

Serial Port 1 Address...................... 03F8h, IRQ4

Serial Port 2 Address...................... 02F8h, IRQ3

Parallel Port Address ...................... 03BCh

Parallel Port IRQ ............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache .......... Enabled

Select Serial Port 1 Address

03F8h, IRQ4 02F8h, IRQ3 03E8h, IRQ4 02E8h, IRQ3 Disabled

D486 CPU Card User’s Manual 73

Page 74

FIGURE 17 - B

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller...............On

Onboard IDE Interface.....................On

AT Bus Speed..................................CPU Osc Freq ÷ 4

DMA Speed .....................................1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time...........................2 bus clocks

CT206 Read/Write Wait States........2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay...................1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address.......................03F8h, IRQ4

Serial Port 2 Address.......................02F8h, IRQ3

Parallel Port Address .......................03BCh

Parallel Port IRQ..............................IRQ5

Parallel Port Mode ...........................Bidirectional

Flash I/O Port Address ....................0270H

Internal 486 Cache ..........................Enabled

External 128K DRAM Cache...........Enabled

Select Serial Port 2 Address

03F8h, IRQ4 02F8h, IRQ3 03E8h, IRQ4 02E8h, IRQ3 Disabled

74 D486 CPU Card User’s Manual

Page 75

Advanced Options

5.2.2 Parallel Ports

Use this feature to select an address for the on-board parallel port. Standard addresses include:

• 3BC

• 378

• 278

• Disabled

Once you enable a port address, you may choose between IRQ5, IRQ7 and NO IRQ. The parallel port can also be conﬁgured as standard AT-compatible or bi-directional.

D486 CPU Card User’s Manual 75

Page 76

FIGURE 18 - A

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface.....................On

AT Bus Speed..................................CPU Osc Freq ÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time ..........................2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ......................03F8h, IRQ4

Serial Port 2 Address ......................02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode...........................Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

Select Parallel Port Address

Disabled 03BCh 0378h 0278h

76 D486 CPU Card User’s Manual

Page 77

FIGURE 18 - B

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller...............On

Onboard IDE Interface.....................On

AT Bus Speed ..................................CPU Osc Freq ÷ 4

DMA Speed......................................1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time...........................2 bus clocks

CT206 Read/Write Wait States........2 wait states

8 Bit DMA Wait States......................2 wait states

16 Bit DMA Wait States....................2 wait states

DMA CAS Timing Delay...................1 CPU clock

DMA Address Hold Time .................2-3 CPU clocks

Serial Port 1 Address.......................03F8h, IRQ4

Serial Port 2 Address.......................02F8h, IRQ3

Parallel Port Address .......................03BCh

Parallel Port IRQ ..............................IRQ5

Parallel Port Mode............................Bidirectional

Flash I/O Port Address.....................0270H

Internal 486 Cache...........................Enabled

External 128K DRAM Cache ...........Enabled

Select Parallel Port IRQ

Select Parallel Port Address

No IRQ IRQ5 IRQ7

D486 CPU Card User’s Manual 77

Page 78

FIGURE 18 - C

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

Set Parallel Port Mode

Select Parallel Port IRQ

Bidirectional Compatible

78 D486 CPU Card User’s Manual

Page 79

Advanced Options

5.2.3 Cache

The D486 contains a secondary DRAM cache as well as internal 8 KByte (16 KByte with DX4 CPU) cache. This option allows you to enable both caches; however, the internal cache must be enabled

before the secondary cache can be used.

The Setup Utility also allows you to deﬁne two non-cacheable blocks. After the cache enable options are conﬁgured, the “NonCacheable Memory Block 1” window appears, followed by the “NonCacheable Memory Block 2” window. In each window, the “Block Size” column is highlighted. To increment the block size, press the Page Up key; press the P age Down key to decrement. The block size options for block #1 are 4K, 8K, 16K, 32K, 64K, 128K, 256K, 512K and 1M. For block #2, the size may be 64K, 128K, 256K, 512K, 1M, 2M and 4M.

Once the block size is selected, press the right arrow key to highlight the “Start Addr” column. This column is used to select the start address for the non-cacheable memory block. As with the “Block Size” column, press the Page Up key to increment, Page Down to decrement. The increment unit is the block size selected earlier.

D486 CPU Card User’s Manual 79

Page 80

FIGURE 19 - A

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller..............On

Onboard IDE Interface.....................On

AT Bus Speed..................................CPU Osc Freq ÷ 4

DMA Speed.....................................1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time...........................2 bus clocks

CT206 Read/Write Wait States........2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay..................1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address.......................03F8h, IRQ4

Serial Port 2 Address.......................02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ..............................IRQ5

Parallel Port Mode ...........................Bidirectional

Flash I/O Port Address....................0270H

Internal 486 Cache..........................Enabled

External 128K DRAM Cache...........Enabled

Internal 486 Cache

Disable Enable

80 D486 CPU Card User’s Manual

Page 81

FIGURE 19 - B

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller...............On

Onboard IDE Interface.....................On

AT Bus Speed ..................................CPU Osc Freq ÷ 4

DMA Speed......................................1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time...........................2 bus clocks

CT206 Read/Write Wait States........2 wait states

8 Bit DMA Wait States......................2 wait states

16 Bit DMA Wait States....................2 wait states

DMA CAS Timing Delay...................1 CPU clock

DMA Address Hold Time .................2-3 CPU clocks

Serial Port 1 Address.......................03F8h, IRQ4

Serial Port 2 Address.......................02F8h, IRQ3

Parallel Port Address .......................03BCh

Parallel Port IRQ ..............................IRQ5

Parallel Port Mode............................Bidirectional

Flash I/O Port Address.....................0270H

Internal 486 Cache...........................Enabled

External 128K DRAM Cache ...........Enabled

External DRAM Cache

Disable Enable

D486 CPU Card User’s Manual 81

Page 82

FIGURE 19 - C

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Pg Up (incr) Pg Down (decr) Enter (execute)

Onboard Floppy Controller...............On

Onboard IDE Interface.....................On

AT Bus Speed..................................CPU Osc Freq ÷ 4

DMA Speed .....................................1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time...........................2 bus clocks

CT206 Read/Write Wait States........2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay...................1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address.......................03F8h, IRQ4

Serial Port 2 Address.......................02F8h, IRQ3

Parallel Port Address .......................03BCh

Parallel Port IRQ..............................IRQ5

Parallel Port Mode ...........................Bidirectional

Flash I/O Port Address ....................0270H

Internal 486 Cache ..........................Enabled

External 128K DRAM Cache...........Enabled

Non-Cacheable Memory Block 1

Block Size Start Addr End Addr

16K 00004000 00007FFF

82 D486 CPU Card User’s Manual

Page 83

FIGURE 19 - D

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq ÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

Non-Cacheable Memory Block 2

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States.....................2 wait states

Block Size Start Addr End Addr

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

2M 00200000 003FFFFF

D486 CPU Card User’s Manual 83

Page 84

FIGURE 20

Using the Setup Utility

5.2.4 DRAM Speeds

DRAM wait states may be set to 0, 1, 2 or 3. The Setup Utility, however, will limit the selections offered depending on the CPU oscillator frequency and other hardware present on the CPU board.

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

Select DRAM Wait States

0 wait states 1 wait state 2 wait states 3 wait states

84 D486 CPU Card User’s Manual

Page 85

Advanced Options

5.2.5 Bus-DMA-I/O Speeds

This selection will present several menus:

• AT Bus Speed

• DMA Speed

• 8 and 16 bit DMA Wait States

• DMA CAS Timing Delay

• DMA Address Hold Time

• CT206 Read/Write Wait States

• I/O Command Recovery Time

It is not within the scope of this manual to elaborate on the meaning of each of these items or the impact of any particular selection on each menu. Modiﬁcation of any of these items should be done under the supervision of a Texas Microsystems Technical Support Specialist or other qualiﬁed person familiar with these options.

Note: AT Bus speeds exceeding 8 MHz are not recommended, and the DMA speed should be set at 1/2 the bus speed.

D486 CPU Card User’s Manual 85

Page 86

FIGURE 21 - A

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

CPU Osc Freq ÷ 6 (4.16 Mhz) CPU Osc Freq ÷ 5 (5.00 MHz) CPU Osc Freq ÷ 4 (6.25 MHz) CPU Osc Freq ÷ 3 (8.33 MHz) CPU Osc Freq ÷ 2 (12.50 MHz) CPU Osc Freq ÷ 8 (3.12 MHz)

Bus Speed

86 D486 CPU Card User’s Manual

Page 87

FIGURE 21 - B

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq ÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

DMA Speed

1/2 Bus Speed (4.16 MHz) Bus Speed (8.33 MHz)

Note: The speeds displayed in this menu are based on the bus speed you selected in the previous menu. DMA speeds greater than 8 MHz or faster than 1/2 the bus speed can cause ﬂoppy drive access problems and miscellaneous problems with other plug-in cards.

D486 CPU Card User’s Manual 87

Page 88

FIGURE 21 - C

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

8 Bit DMA Wait States

1 wait state 2 wait states 3 wait states 4 wait states

88 D486 CPU Card User’s Manual

Page 89

FIGURE 21 - D

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq ÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

16 Bit DMA Wait States

1 wait state 2 wait states 3 wait states 4 wait states

D486 CPU Card User’s Manual 89

Page 90

FIGURE 21 - E

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

DMA CAS Timing Delay

1/2 CPU Clock 1 CPU Clock

90 D486 CPU Card User’s Manual

Page 91

FIGURE 21 - F

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq ÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

DMA Address Hold Time

1-2 CPU Clocks 2-3 CPU Clocks

D486 CPU Card User’s Manual 91

Page 92

FIGURE 21 - G

Using the Setup Utility

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

CT206 Read/Write Wait States

1 wait state 2 wait states 3 wait states 4 wait states

92 D486 CPU Card User’s Manual

Page 93

FIGURE 21 - H

Advanced Options

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq ÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States.....................2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

I/O Command Recovery Time

2 Bus Clocks 4 Bus Clocks 8 Bus Clocks 12 Bus Clocks

D486 CPU Card User’s Manual 93

Page 94

FIGURE 22

Using the Setup Utility

5.2.6 Memory Remapping

The D486 memory remapping feature, when enabled, removes DRAM from optional ROM BIOS address space at A0000-BFFFF and D0000-EFFFF and appends this 256K to the end (or top) of DRAM. Therefore, enabling the remapping feature disables shadowing of option ROM’s in those address spaces.

Model D486 100 MHz BIOS Version 4.0.1.0

Advanced Options

Serial Ports Parallel Ports Cache DRAM Speeds Bus-DMA-I/O Speeds Memory Options Miscellaneous Basic Options

↑(Previous) ↓ (Next) Esc (quit/save) Enter (execute)

Onboard Floppy Controller.............. On

Onboard IDE Interface .................... On

AT Bus Speed.................................. CPU Osc Freq÷ 4

DMA Speed..................................... 1/2 Bus Speed

DRAM Wait States...........................2 wait states

I/O Recovery Time .......................... 2 bus clocks

CT206 Read/Write Wait States.......2 wait states

8 Bit DMA Wait States..................... 2 wait states

16 Bit DMA Wait States...................2 wait states

DMA CAS Timing Delay.................. 1 CPU clock

DMA Address Hold Time.................2-3 CPU clocks

Serial Port 1 Address ...................... 03F8h, IRQ4

Serial Port 2 Address ...................... 02F8h, IRQ3

Parallel Port Address.......................03BCh

Parallel Port IRQ.............................. IRQ5

Parallel Port Mode........................... Bidirectional

Flash I/O Port Address.................... 0270H

Internal 486 Cache.......................... Enabled

External 128K DRAM Cache...........Enabled

Memory Remapping

Disabled Enabled

94 D486 CPU Card User’s Manual

Page 95

Advanced Options

5.2.7 Miscellaneous

This selection will offer additional option menus only if certain nonstandard “BIOS extensions” have been installed in BIOS memory. One such extension is the Serial Redirection BIOS. When this extension is installed, the Miscellaneous selection will permit selection of a serial port, baud rate and other options pertaining to the BIOS extension.

Any installed BIOS extension will be accompanied with documentation explaining options available under the Miscellaneous selection.

D486 CPU Card User’s Manual 95

Page 96

Using the Setup Utility

5.3 Switch SW1-3 - Reload Default Setup Utility Values

Occasionally, you may encounter a situation when the CMOS RAM (Complementary Metallic Oxide Semiconductor Random Access Memory) becomes corrupted. This condition is usually accompanied by a “lock-up” of the system. The factory default Setup Utility values for D486 operation must then be reloaded into CMOS RAM.

Under normal conditions, SW1-3 should remain in the “OPEN” position. However, when factory default values must be

reloaded, follow these procedures:

1. Remove power from the system and place SW1-3 in the

“CLOSED” position.

2. Restore power to the system. The message “System Switch 3 is

ON - Default System Conﬁguration Loaded” will appear on the screen.

3. After waiting a few seconds, remove power from the system,

place SW1-3 in the OPEN position and restore power.

Depending on the speciﬁcs of the system, the D486 may boot. If it does, you can modify the setup after pressing the “S” key during memory tests. If the D486 cannot boot, the messages “Invalid Conﬁguration Information” and “Please Run Setup Program” and the prompts “Strike F1 to continue” and “Strike F2 for Setup” will appear on the screen. Strike the F2 key to recall the Setup Utility and reset the parameters as needed. Press the ESC key to save the setup parameter values and reboot the system.

96 D486 CPU Card User’s Manual

Page 97

CHAPTER 6 Memory

Conﬁguration

The D486 supports up to 64 MBytes of on-board memory in various conﬁgurations. Memory can be added to the D486 through the installation of SIMM’s (Single Inline Memory Modules).

Three SIMM types (256 KByte, 1 MByte and 4 MByte) are supported by the D486. These 4x36 SIMM’s can be installed in Backs 0, 1, 2 and 3, designated as S1, S2, S3 and S4 in Figure 23. Table 1 summarizes the supported memory conﬁgurations.

CAUTION: Before installing SIMM’ s, remove power from the system by disconnecting the power cord from the power source. After power has been removed, remove the D486 from the chassis. Onl y qualiﬁed, experienced electronics personnel should access the interior of a chassis.

CAUTION: The components of the D486 Card are very sensitive to static discharge. A grounding wrist strap is provided with your D486 to help remove static electricity. While out of the unit, D486 components should be placed on a static-dissipative surface or into a staticshielding bag.

D486 CPU Card User’s Manual 97

Page 98

FIGURE 23

Memory Conﬁguration

Table 1: Supported DRAM Conﬁgurations

S1 S2 S3 S4 T otal Memory

256K 0 0 0 1 MByte 256K 256K 0 0 2 MByte 256K 256K 256K 0 3 MByte 256K 256K 256K 256K 4 MByte 256K 1M 0 0 5 MByte 256K 256K 1M 0 6 MByte 256K 1M 1M 0 9 MByte 256K 256K 1M 1M 10 MByte

1M 0 0 0 4 MByte 1M 1M 0 0 8 MByte

98 D486 CPU Card User’s Manual

Page 99

Memory Conﬁguration

Table 1: Supported DRAM Conﬁgurations

S1 S2 S3 S4 T otal Memory

1M 1M 1M 0 12 MByte 1M 1M 1M 1M 16 MByte 1M 4M 0 0 20 MByte 1M 1M 4M 0 24 MByte 1M 4M 4M 0 36 MByte 1M 1M 4M 4M 40 MByte 4M 0 0 0 16 MByte 4M 4M 0 0 32 MByte 4M 4M 4M 0 48 MByte 4M 4M 4M 4M 64 MByte

D486 CPU Card User’s Manual 99

Page 100

CHAPTER 7 General

Maintenance

As with any electronic hardware, an adequate maintenance program will enhance the D486’s ability to provide dependable performance. In general terms, maintenance includes periodic inspection of the D486 to ensure that it is clean and free from signs of dirt, dust, wear and stress. However, the D486 should be cleaned by a Texas Micro Service Representative.

Caution: Always remove power from the system before inspecting the D486 Card. Disconnect the power cord from the power source. Only experienced electronics personnel should access the interior of a computer chassis.

Warning: Do not allow moisture or condensation to contact D486 components; damage to sensitive components may occur.

Inspect all cables and connectors to verify that they are securely fastened to their connecting components. Replace worn or stressed cables and connectors.

All peripheral equipment used with the D486 should be properly maintained. Malfunctioning equipment should be immediately replaced to prevent damage to the D486 CPU.

100 D486 CPU Card User’s Manual

Texas Micro D486 User Manual (REL. 2)

User’ s Manual

D486 Rel. II CPU Card

Table of Contents

Table of Contents

Table of Contents

CHAPTER 1 Getting Started

FIGURE 1 D486 CPU.

1.1 D486 Components

1.2 Before You Install the D486

1.2.1 Checking the Dip Switch Settings

1.2.2 Checking the Jumper Block Settings

CHAPTER 2 D486 Installation

8. Attach any required cables.

3.1 Serial Ports

FIGURE 2

3.2 Parallel Port

3.3 Keyboard Cable Header/Connector

FIGURE 5 Keyboard connector.

3.4 Hard Drive Header/Connector

FIGURE 6

3.5 Floppy Drive Header/Connector

FIGURE 7

CHAPTER 4 P ower-up

4.1 BIOS

4.2 Diagnostics

4.3 Rebooting the D486

1. Cycle power off and on.

2. Press and hold the CTRL, ALT and DEL keys.

3. Depress the system’s reset switch.

1. Check dip switch settings.

4. Connect peripherals to the D486.

FIGURE 8

5.1 Basic Options Menu

5.1.1 Time and Date

5.1.2 Floppy Disks

5.1.3 Fixed Disks

5.1.4 Video Adapter

5.1.5 Keyboard

5.1.6 Shadow RAM

5.1.7 Boot Options

5.1.8 Password Options

5.1.9 Park Hard Drive

5.1.10 Flash It!

5.2 Advanced Options

5.2.1 Serial Ports

5.2.2 Parallel Ports

5.2.3 Cache

5.2.4 DRAM Speeds

5.2.5 Bus-DMA-I/O Speeds

5.2.6 Memory Remapping

5.2.7 Miscellaneous

FIGURE 23