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5.075 bytes |
Service Hints & Tips |
Document ID: GSMH-39GBS6 |
IBM ValuePoint - 12902 POST error with Pentium Overdrive (P24T) upgrade
Applicable to: World-Wide
Service Information:
Intel has released a 25MHz Pentium P24-T processor upgrade that is supported in the following ValuePoint models:
6382/S 25MHz F00, F30, F50, F51, FY1, FZ0, FZ
6384/D 25MHz F00, F30, F50, F51, G00, G40, G41, G50, G53
6384/D 25/50MHz V00, V50, V51, V70, V73
6387/T 25/50MHz V00, V50, V81, V83
This option requires flash BIOS level 68 or higher.
Installing the Pentium P24-T option on systems with a flash BIOS level lower than 68 will result in POST disabling the level 1 cache and displaying error code 12902 (level 1 cache error). Level 1 cache cannot be re-enabled on a system using a P24-T processor with BIOS level lower than 68. With the P24-T on the system board, use the following procedure to install flash BIOS.
Install the flash diskette in drive A and turn the system on. After the 12902 error is displayed, press Escape to bypass the Configuration Utility and system will boot from the flash diskette. Follow the displayed messages to update the flash BIOS. Instructions for installing flash updates are also in a README file on the diskette.
Until flash level 68 (or higher) can be installed, the 12902 error can also be bypassed by depressing "ESC" after the error is displayed. This will allow the system to operate with the P24-T installed with down level flash BIOS, but will result in substantially reduced performance and is not recommended.
P24-T DIAGNOSTICS:
IBM Advanced Diagnostics were written to test the 80486 family of microprocessors and will return a false error during the system board test with the P24-T installed. Advanced Diagnostics can be used to test video, memory, and I/O with the P24-T installed. To test the system board interfaces to the processor, it will be necessary to reinstall the 80486 before running diagnostics.
If a replacement P24-T is required, the customer should be referred to the place of purchase or Intel.
OBTAINING FLASH UPGRADES:
The FLASH EEPROM revision level can be viewed on page 1 of the configuration utility. The fifth and sixth positions of the FLASH EEPROM level represent the level of the code; for example LDJT68AUS is code level 68.
Important:
Flash updates are customer installable.
Update diskettes may be downloaded by Double-Clicking here :-
Note:
Intel and Pentium are trademarks of Intel Corporation.
SAS KEYWORDS:
PSY2 6384 PSVP VALUE POINT
PS/VALUEPOINT PS/VP D/T6382 6382
P24T PSY2ERR PSVPERR PSY2DIAG
PSVPNLGO PSY2MLGO PSVPBRD PSY2BRD
PSVPDIAG
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Hint Category |
Error Messages, Processors, Retain | |
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Date Created |
26-07-95 | |
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Last Updated |
25-01-99 | |
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Revision Date |
19-05-99 | |
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Brand |
IBM PC | |
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Product Family |
ValuePoint | |
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Machine Type |
6382, 6384, 6387 | |
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Model |
various | |
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TypeModel |
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Retain Tip (if applicable) |
H126683 | |
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Reverse Doclinks |