Client Management Functions - HP Compaq d330 DT Technical Reference Manual

Chapter 8 BIOS ROM
8.5

CLIENT MANAGEMENT FUNCTIONS

Table 8-4 provides a partial list of the client management BIOS functions supported by the
systems covered in this guide. These functions, designed to support intelligent manageability
applications, are Compaq-specific unless otherwise indicated.
Table 8-4. Client Management Functions (INT15)
Client Management Functions (INT15)
AX Function
E800h Get system ID
E813h Get monitor data
E814h Get system revision
E816h Get temperature status
E817h Get drive attribute
E818h Get drive off-line test
E819h Get chassis serial number
E820h [1] Get system memory map
E81Ah Write chassis serial number
E81Bh Get hard drive threshold
E81Eh Get hard drive ID
E827h DIMM EEPROM Access
NOTE:
[1] Industry standard function.
All 32-bit protected-mode functions are accessed by using the industry-standard BIOS32 Service
Directory. Using the service directory involves three steps:
1. Locating the service directory.
2. Using the service directory to obtain the entry point for the client management functions.
3. Calling the client management service to perform the desired function.
The BIOS32 Service Directory is a 16-byte block that begins on a 16-byte boundary between the
physical address range of 0E0000h-0FFFFFh. The format is as follows:
Offset
00h
04h
08h
09h
0Ah
0Bh
8-12 hp compaq d330 and d530 Series of Personal Computers
Featuring the Intel Pentium 4 Processor
Table 8-4.
No. Bytes Description
4 Service identifier (four ASCII characters)
4 Entry point for the BIOS32 Service Directory
1 Revision level
1 Length of data structure (no. of 16-byte units)
1 Checksum (should add up to 00h)
5 Reserved (all 0s)
First Edition - June 2003
Mode
Real, 16-, & 32-bit Prot.
Real, 16-, & 32-bit Prot.
Real, 16-, & 32-bit Prot.
Real, 16-, & 32-bit Prot.
Real
Real
Real, 16-, & 32-bit Prot.
Real
Real
Real
Real
Real, 16-, & 32-bit Prot.