HP LH4r HP Netserver DiagTools v1.0x User Guide - Page 78

Address Test, Refresh Test, Data Bus Test, Cache Memory Test, Pentium II L2 Cache Test, Drive Speed

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Appendix B Test Descriptions 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. 74

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Appendix B
Test Descriptions
74
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.