HP Dc7900 Technical Reference Guide: HP Compaq dc7900 Series Business Desktop - Page 96
System ID and ROM Type, 8.4.2 Temperature Status, Table 8-3, System ID Numbers
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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 3033h 3036h SFF 3031h 3034h CMT: 3032h 3035h NOTE: For all systems, BIOS ROM Family = 786G1, 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. 8-6 www.hp.com Technical Reference Guide