HP dx7300 HP Compaq dx7300 and dc7700 Business PC Technical Reference Guide, 1 - Page 150
System ID and ROM Type, 8.5.2 Temperature Status, 8.5.3 Drive Fault Prediction
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BIOS ROM 8.5.1 System ID and ROM Type Diagnostic applications can use the INT 15, AX=E800h BIOS function to identify the type of system. This function will return the system ID in the BX register. Systems have the following IDs and ROM family types: Table 8-4 System ID Numbers System (Form Factor) Subsystem System ID Device ID USDT 0A5Ch 2803h SFF/ST: 0A54h 2801h MT: 0A50h 2800h CMT: 0A58h 2802h NOTE: For all systems, BIOS ROM Family = 786E1, PnP ID = CPQ0968, and Subsystem vendor ID = 103Ch. The ROM family and version numbers can be verified with the Setup utility or the Compaq Insight Manager or Diagnostics applications. 8.5.2 Temperature Status The BIOS includes a function (INT15, AX=E816h) to retrieve the status of a system's interior temperature. This function allows an application to check whether the temperature situation is at a Normal, Caution, or Critical condition. 8.5.3 Drive Fault Prediction The BIOS directly supports Drive Fault Prediction for IDE (ATA)-type hard drives. This feature is provided through two Client Management BIOS calls. Function INT 15, AX=E817h is used to retrieve a 512-byte block of drive attribute data while the INT 15, AX=E81Bh is used to retrieve the drive's warranty threshold data. If data is returned indicating possible failure then the following message is displayed: 1720-SMART Hard Drive detects imminent failure 8-16 www.hp.com Technical Reference Guide