HP Vectra Technical Reference Manual page 384

C.3 Diagnostic Status Byte (CMOS Address OEH)
This byte is set by the POST routine to flag errors detected during power on. The contents of this
byte are detailed in table C.6.
Table C.6
CMOS_DIAGNOSTIC_STATUS (CMOS Address
OEH)
Bit
Data Definition
7 1
Power to RTC failed
6
1
Bad industry standard CMOS checksum
5
1
Configuration inconsistency
4
1 Memory size does not match
3 1 Hard disc failed initialization
2 1 Invalid CMOS
1-0
- -
Reserved
C.4 System Shutdown Byte (CMOS Address OFH)
This byte is used by the system power-on sequence to determine what action is to be taken upon
return from protected mode. The details of this byte are shown in table C.7.
CMOS Memory Layout and Real-Time Clock 375