HP dc73 Technical Reference Guide: HP Compaq dc7800 Series Business Desktop Co - Page 98
System ID and ROM Type, 4.2 Temperature Status, 4.3 Drive Fault Prediction
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SYSTEM BIOS 8.4.1 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 8-3 System ID Numbers System (Form Factor) Subsystem System ID Device ID USDT 0AA4h 281Ah SFF 0AA8h 2818h CMT: 0AACh 2819h NOTE: For all systems, BIOS ROM Family = 786F1, PnP ID = CPQ0968, and Subsystem vendor ID = 103Ch. The ROM family and version numbers can be verified with the Setup utility or the System Insight Manager or Diagnostics applications. 8.4.2 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. 8.4.3 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 8-6 www.hp.com Technical Reference Guide