HP Vectra Technical Reference Manual page 26

Table 2.3
EX-BIOS Return Status Codes
Return Status
Code Indication
RS_SUCCESSFU L
OOOH
The requested function executed correctly.
RS_UNSUPPORTED
002H
The requested function or subfunction is
not implemented or is unsupported.
RS_FAlL
OFEH (-02H)
The driver failed the operation in an error
state.
RS_BAD_PARAMETER
OFAH (-06H)
The driver received a bad parameter.
RS_BUSY
OF8H (-08H)
The requested driver is busy.
RS_NO_VECTOR
OF6H (-OAH)
EX-BIOS Vector table is out of RAM or
room for more drivers.
RS_OFFLINE
OF4H (-OCH)
Device is offline.
RS_OUT_OF_PAPER
OF2H (-OEH)
Device is out of paper.
If additional drivers are installed in the system, they should conform to the defined statuses
wherever possible. However, to maintain coding efficiency and/or functional accuracy, a driver
may create a return status other than those listed in Table 2.3.
Note
Return status conditions are always multiples of two. Negative return status codes
indicate error conditions, while positive status codes indicate exceptional conditions
to the caller. For example, the status code RS_UNSUPPORTED indicates the driver
does not support a function which mayor may not be an error, while RS_OUT_
OF_PAPER requires some kind of response by the caller.
ROM BIOS Overview 17