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)

AX

Function

Mode

 

 

 

E800h

Get system ID

Real, 16-, & 32-bit Prot.

 

 

 

E813h

Get monitor data

Real, 16-, & 32-bit Prot.

 

 

 

E814h

Get system revision

Real, 16-, & 32-bit Prot.

 

 

 

E816h

Get temperature status

Real, 16-, & 32-bit Prot.

 

 

 

E817h

Get drive attribute

Real

 

 

 

E818h

Get drive off-line test

Real

 

 

 

E819h

Get chassis serial number

Real, 16-, & 32-bit Prot.

 

 

E820h [1] Get system memory map

Real

 

 

 

E81Ah

Write chassis serial number

Real

 

 

 

E81Bh

Get hard drive threshold

Real

 

 

 

E81Eh

Get hard drive ID

Real

 

 

 

E827h

DIMM EEPROM Access

Real, 16-, & 32-bit Prot.

 

 

 

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 following subsections provide a brief description of key Client Management functions.

8-16

361834-002

Technical Reference Guide