Compaq 850 manual Configuration Byte 2Eh, 2Fh, Checksum

Technical Reference Guide

Configuration Byte 2Dh, Additional Flags

Default Value = 00h

Bit	Function
7..5	Reserved
4	Memory Test
	0	= Test memory on power up only
	1	= Test memory on warm boot
3	POST Error Handling (BIOS Defined)
	0	= Display “Press F1 to Continue” on error
	1	= Skip F1 message
2..0	Reserved

Configuration Byte 2Eh, 2Fh, Checksum

These bytes hold the checksum of bytes 10h to 2Dh.

Configuration Byte 30h, 31h, Total Extended Memory Tested

This location holds the amount of system memory that checked good during the POST.

Configuration Byte 32h, Century

This location holds the Century value in a binary coded decimal (BCD) format.

Configuration Byte 33h, Miscellaneous Flags

Default Value = 80h

Bit Function

7Memory Above 640 KB 0 = No, 1 = Yes

6	Reserved
5	Weitek Numeric Coprocessor Present:
	0 = Not installed,	1 = Installed
4	Standard Numeric Coprocessor Present:
	0 = Not installed,	1 = Installed
3..0	Reserved

Configuration Byte 34h, International Language Support

Default Value = 00h

Compaq Deskpro EXS and Workstation 300 Personal Computers 4-29

Featuring the Intel Pentium 4 Processor

First Edition - December 2000