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
7 Memory 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 and Evo Personal Computers
Featuring Intel Celeron and Pentium III Processors
Fifth Edition - March 2002
4-31
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