HP LH4r HP Netserver DiagTools v2.0 User Guide - Page 75

FDD Flexible Disk Drive or Floppy Tests, KBD Keyboard Tests

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Appendix B Test Descriptions Random Memory Test This test uses a pseudo-random number generator to generate random addresses spread over the whole memory area, and then writes random data to the location, reads it back and compares the data read with the data written. Address Test The address test writes a value in one location of memory and then scans the entire memory to find out a reflection of that value. Refresh Test This test makes sure the refresh circuitry is functioning and measures the refresh interval. An error is reported if this interval is not within +/- 5 percent of the standard refresh interval of 15 microseconds. Data Bus Test This test will check the data bus for a short. Cache Memory Test If DiagTools detects cache memory in the system, it will display the external cache size and test all of it. Pentium II L2 Cache Test The Pentium II processor provides a cache configuration mechanism for accessing the L2 cache controller and data RAM. Supported L2 Commands may be initiated on the cache bus via this mechanism and Tag, state, data, and ECC bits may be written to the L2 and read back. If DiagTools detects Pentium II processor in the system and the L2 cache is enabled, it performs several tests to verify that the cache configuration mechanism, cache controller, TagRAM, data RAM and the L2 commands are performing as expected. FDD (Flexible Disk Drive or Floppy) Tests Flexible Disk Drives are tested for rotational speed, read/write ability (both random and sequential), elevator, and seek channel. Drive Speed Test This test determines the rotational speed of the floppy drive. Random R/W Test This test checks the random seek, read, and write capability of the floppy drive. The diskette used in this test must be formatted. Sequential R/W Test This test checks the sequential seek, read, and write capability of the floppy drive. The diskette used in this test must be formatted. Elevator seek Test This test verifies the track-to-track seeking capability of the floppy drive. This test is sometimes called a butterfly test. Disk Change Line Test This test verifies the change line capability of the floppy drive. KBD (Keyboard) Tests The KBD Test Menu includes testing the keyboard controller, scanning, LEDs, clock line, and data line for proper functionality. 71

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Appendix B
Test Descriptions
71
Random Memory Test
This test uses a pseudo-random number generator to generate random addresses spread over the whole
memory area, and then writes random data to the location, reads it back and compares the data read with
the data written.
Address Test
The address test writes a value in one location of memory and then scans the entire memory to find out a
reflection of that value.
Refresh Test
This test makes sure the refresh circuitry is functioning and measures the refresh interval. An error is
reported if this interval is not within +/- 5 percent of the standard refresh interval of 15 microseconds.
Data Bus Test
This test will check the data bus for a short.
Cache Memory Test
If DiagTools detects cache memory in the system, it will display the external cache size and test all of it.
Pentium II L2 Cache Test
The Pentium II processor provides a cache configuration mechanism for accessing the L2 cache controller
and data RAM. Supported L2 Commands may be initiated on the cache bus via this mechanism and Tag,
state, data, and ECC bits may be written to the L2 and read back.
If DiagTools detects Pentium II processor in the system and the L2 cache is enabled, it performs several
tests to verify that the cache configuration mechanism, cache controller, TagRAM, data RAM and the L2
commands are performing as expected.
FDD (Flexible Disk Drive or Floppy) Tests
Flexible Disk Drives are tested for rotational speed, read/write ability (both random and sequential),
elevator, and seek channel.
Drive Speed Test
This test determines the rotational speed of the floppy drive.
Random R/W Test
This test checks the random seek, read, and write capability of the floppy drive. The diskette used in this
test must be formatted.
Sequential R/W Test
This test checks the sequential seek, read, and write capability of the floppy drive. The diskette used in this
test must be formatted.
Elevator seek Test
This test verifies the track-to-track seeking capability of the floppy drive. This test is sometimes called a
butterfly test.
Disk Change Line Test
This test verifies the change line capability of the floppy drive.
KBD (Keyboard) Tests
The KBD Test Menu includes testing the keyboard controller, scanning, LEDs, clock line, and data line for
proper functionality.