CPU Diagnostics

Accessing the CPU Diagnostics

This section describes how to test the platform by using the diagnostic commands. To begin testing:

1. Insert the diagnostic diskette.
2. Boot the system.

The system displays the PC-Doctor Diagnostics Screen.

3. After choosing the appropriate test, use the following keystrokes to administer the test.
    
   

   Key	Function
   SPACE	Select the item to be diagnosed.
   CONTROL-G	Help
   CONTROL-O	Options
   CONTROL-T	Access a log of the diagnostics.
   CONTROL-Y	Unselect all items
   CONTROL-N	Run test in window
   CONTROL-R	Run all tests
   ENTER	Run test
   ESCAPE	Exit

Exiting the CPU Diagnostics

Use the ESCAPE key to abort or end an in-progress test. It may take one or more minutes for longer tests to end, because the system is returned to a reasonable state after the test is aborted.

Most tests can be aborted. However, do not abort the surface scan test because of its potentially destructive nature.

Performing CPU and Coprocessor Diagnostics

Tests are performed on the CPU and coprocessor. C&T, Cyrix, and IIT refer to integrated circuit manufacturers.

To perform CPU and coprocessor diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	CPU/Coprocessor

The system displays the CPU and Coprocessor Diagnostics Selection Screen.

3. Press ENTER.

The system displays the CPU and Coprocessor Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests.
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the CPU and Coprocessor Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Memory Diagnostics

Diagnostics are performed on base, extended, and expanded memory, and upper memory (UMB) blocks. Memory diagnostics are divided into three categories:

• Pattern–verifies memory locations
• Address–verifies chip select lines
• Bus throughput–verifies bus noise and timing

Pattern and address tests are available as fast, medium and heavy.

To perform memory diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	RAM Memory

The system displays the Memory Diagnostics Selection Screen.

3. Press ENTER.

The system displays the Memory Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests.
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the Memory Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing System Board Diagnostics

System board diagnostics are performed in the following areas:

• 80x86 central processing unit (CPU)–registers, except CS and IP (code segment and instruction pointer), arithmetics, logical operations, string operations, interrupts/exceptions, buffers/cache, C&T/Cyrix specific
• Floating point unit (math coprocessor)–registers, commands, arithmetics, transcendental, exceptions, Cyrix/IIT
• System board–system timer, BIOS timer, IRQ controller, DMA channels, RAM refresh, RTC clock, CMOS RAM, keyboard, external cache, PCI, PCMCIA
• Keyboard–keyboard keys, LEDs, repeat (checks the keyboard repeat function), 84-key AT-compatible keyboard or 101-key enhanced AT-style keyboard

To perform system board diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	System Board

The system displays the System Board Diagnostics Selection Screen.

3. Press ENTER.

The system displays the System Board Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests.
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the System Board Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Video Adapter Diagnostics

The video and monitor tests check the functionality of both the video adapter and the monitor. They operate with either a monochrome or a color system using popular monochrome, and VGA (video graphics array) and SVGA (super video graphics array) adapters, as well as monochrome and color analog, digital, and multiple scan frequency monitors. Tests include:

• Video memory
• Video pages
• VGA controller registers
• VGA color-DAC (digital to analog converter) register
• Character sets, color palettes, monitor quality, and VGA function

To perform video adapter diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	Video Adapter

The system displays the Video Adapter Diagnostics Selection Screen.

3. Press ENTER.

The system displays the Video Adapter Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests.
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the Video Adapter Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Serial Port Diagnostics

The serial port diagnostics check the internal functionality of the serial port controller chips, as well as the integrity of the drivers and connections to external serial devices. The RMB COM port is hidden for the platform diagnostics and cannot be tested. The diagnostics are performed on up to 4 adapters that have been identified by the BIOS. Tests include:

• Registers and interrupts–test and validate chip functions
• Internal loopback–done with serial adapters; does not require external loopback plugs
• External loopback–must connect the DB9 or DB25 loopback plug onto the platform serial ports
• FIFO buffers (16550A)–done with serial adapters; does not require external loopback plugs

To perform serial port diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	Serial Ports

The system displays the Serial Port Diagnostics Selection Screen.

3. Press ENTER.

The system displays the Serial Port Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests.
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the Serial Port Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Parallel Port Diagnostics

Parallel port diagnostics verify the ability of the parallel ports to control a printer properly. The tests send various patterns of signals out of the port. The diagnostics are performed on up to 4 adapters that have been identified by the BIOS. diagnostics include:

• Command and data port pattern–test the respective registers
• External loopback and IRQ
• Verify the port input and output capabilities and the IRQ line
• Connect the DB25 parallel loopback plug onto the platform parallel ports.

To perform parallel port diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	Parallel Ports

The system displays the Parallel Port Diagnostics Selection Screen

3. Press ENTER.

The system displays the Parallel Port Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests..
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the Parallel Port Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Fixed Disk Diagnostics

Diagnostics performed on the hard drive include a surface scan for surface defects and the following:

• Controller–performed at least 4 times on the controller chip, then resets
• Hi-low seek–drive heads are moved from the lowest to the highest tracks and then returned to the lowest; test is repeated
• Funnel seek–drive heads are moved from track X to track Y and back where X is 0 and increased by 1 with each seek operation until Y is 0
• Track-to-track seek–drive heads are moved from track 0 to the maximum one track at a time
• Random seek–drive heads are moved randomly
• Linear verify–reads all tracks on the disk; displays track number if errors
• Random verify–reads random tracks

To perform fixed disk diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	Fixed Disks

The system displays the Fixed Disk Diagnostics Selection Screen.

3. Press ENTER.

The system displays the Fixed Disk Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests..
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the Fixed Disk Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Diskette Drive Diagnostics

These diagnostics verify that the floppy controller and drive function properly. They require the tester to insert a scratch diskette (DOS or UNIX formatted) prior to testing. Diagnostics include:

• Hi-low seek
• Funnel seek
• Track-to-track seek
• Random seek
• Linear verify
• Random verify
• Linear write and read–this test overwrites any data on the diskette
• Linear write–this test overwrites any data on the diskette
• Random read

To perform diskette drive diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	Diskette Drives

The system displays the Diskette Drive Diagnostics Selection Screen.

3. Press ENTER.

The system displays the Diskette Drive Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests..
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the Diskette Drive Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Other Drive Diagnostics

These diagnostics verify that the other SCSI drives function properly.

To perform other drive diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Diagnostics
	Diskette Drives

The system displays the Other Drive Diagnostics Selection Screen.

3. Press ENTER.

The system displays the Other Drive Diagnostics Screen.

4. Use the UP arrow and the DOWN arrow keys to highlight the individual tests..
5. Use the SPACE bar to select a test.
    
   

   Note: A > next to a test means it has been selected and it will be performed.

6. Press CONTROL + N.

The system displays the Other Drive Diagnostics Results Screen.

7. Press ESCAPE.

The system displays the PC-Doctor Diagnostics Screen.

Performing Video Adapter Character Sets Tests

To perform video adapter character sets tests:

1. Access the diagnostics.
2. Place the cursor on:

Interactive Tests
	Video
		Character Sets

The system displays the Video Adapter Character Sets Tests Screen.

3. Use the UP arrow and the DOWN arrow keys to highlight the individual test.
4. Press ENTER to start the test.
5. Press ESCAPE to exit the test.

The system displays the Video Adapter Tests Screen.

Performing Video Adapter Color Palettes Tests

To perform video adapter color palettes tests:

1. Access the diagnostics.
2. Place the cursor on:

Interactive Tests
	Video
		Color Palettes

The system displays the Video Adapter Color Palettes Tests Screen.

3. Use the UP arrow and the DOWN arrow keys to highlight the individual test.
4. Press ENTER to start the test.
5. Press ESCAPE to exit the test.

The system displays the Video Adapter Tests Screen.

Performing Video Adapter Monitor Quality Tests

To perform video adapter monitor quality tests:

1. Access the diagnostics.
2. Place the cursor on:

Interactive Tests
	Video
		Monitor Quality

The system displays the Video Adapter Monitor Quality Tests Screen.

3. Use the UP arrow and the DOWN arrow keys to highlight the individual test.
4. Press ENTER to start the test.
5. Press ESCAPE to exit the test.

The system displays the Video Adapter Tests Screen.

Performing Video Adapter VGA Functions Tests

To perform video adapter VGA functions tests:

1. Access the diagnostics.
2. Place the cursor on:

Interactive Tests
	Video
		VGA Functions

The system displays the Video Adapter VGA Functions Tests Screen.

3. Use the UP arrow and the DOWN arrow keys to highlight the individual test.
4. Press ENTER to start the test.
5. Press ESCAPE to exit the test.

The system displays the Video Adapter Tests Screen.

Performing an Internal Speaker Test

To perform an internal speaker test:

1. Access the diagnostics.
2. Place the cursor on:

Interactive Tests
	Internal Speaker

The system displays the Internal Speaker Test Screen.

3. Use the UP arrow and the DOWN arrow keys to change the frequency of the test.
4. Press ESCAPE to exit the speaker test.

The system displays the PC-Doctor Diagnostics Screen.

Performing Diskette Tests

To perform diskette tests:

1. Access the diagnostics.
2. Place the cursor on:

Interactive Tests
	Diskette

The system displays the Diskette Tests Screen.

3. Use the UP arrow and the DOWN arrow keys to highlight the individual test.
4. Press ENTER to start the test.
5. Press ESCAPE to exit the test.

The system displays the PC-Doctor Diagnostics Screen.

Viewing System Configuration via CPU Diagnostics

To view system configuration via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	System Configuration

The system displays the several screens detailing the system configuration.

3. Press ESCAPE to exit the system configuration screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing Memory Contents via CPU Diagnostics

To view memory contents via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	Memory Contents

The system displays the several screens detailing:

• Memory type
• Base RAM allocation
• Expansion ROM
• BIOS ROM
• Environment
3. Press ESCAPE to exit the memory contents screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing IRQ and DMA Use via CPU Diagnostics

To view IRQ and DMA use via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	IRQ and DMA Use

The system displays the several screens detailing:

• IRQ number
• IRQ mask
• Stray IRQ
• Interrupt vector
• Detected devices
3. Press ESCAPE to exit the IRQ and DMA use screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing Device Drivers via CPU Diagnostics

To view device drivers via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	Device Drivers

The system displays the several screens listing the device drivers used.

3. Press ESCAPE to exit the device drivers screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing COM and LPT Ports via CPU Diagnostics

To view COM and LPT ports via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	COM and LPT Ports

The system displays the several screens detailing:

• BIOS Type
• Base Address
• Port Type
• Chip ID
• Current Settings
3. Press ESCAPE to exit the COM and LPT port screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing Physical Disk Drives via CPU Diagnostics

To view physical disk drives via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	Physical Disk Drives

The system displays the several screens detailing the physical disk drives configuration.
 


Note: This information might be incorrect in a RAID system.

3. Press ESCAPE to exit the physical disk drives screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing Logical Disk Drives via CPU Diagnostics

 

This option should not be used. It displays incorrect information.

Viewing VGA Information via CPU Diagnostics

To view VGA information via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	VGA Information

The system displays the several screens detailing the video circuit card information.

3. Press ESCAPE to exit the VGA information screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing Software Interrupts via CPU Diagnostics

To view system configuration via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	Software Interrupts

The system displays the several screens detailing the software interrupts used.

3. Press ESCAPE to exit the software interrupt screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing I/O Use via CPU Diagnostics

To view I/O use via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	I/O Use

The system displays the several screens detailing the system I/O use.

3. Press ESCAPE to exit the I/O use screens.

The system displays the PC-Doctor Diagnostics Screen.

Viewing PCI Information via CPU Diagnostics

To view PCI information via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Hardware Info
	PCI Information

The system displays the several screens detailing:

• PCI BIOS version
• PCI circuit card information
3. Press ESCAPE to exit the PCI information screens.

The system displays the PC-Doctor Diagnostics Screen.

Accessing the DOS Shell via CPU Diagnostics

To access the DOS shell via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Utility
	DOS Shell

The system displays the A:> prompt.

3. Enter exit to exit the DOS shell.

The system displays the PC-Doctor Diagnostics Screen.

Performing a Surface Scan of a Hard Disk Drive via CPU Diagnostics

To perform a surface scan of a hard disk drive via CPU diagnostics:

1. Access the diagnostics.
2. Place the cursor on:

Utility
	Surface Scan Hard Disk Drive

The system displays the Surface Scan Hard Disk Tests Screen.

3. Use the UP arrow and the DOWN arrow keys to highlight the individual test.
4. Press ENTER to start the test.
5. Press ESCAPE to exit the test.

The system displays the PC-Doctor Diagnostics Screen.

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