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Extensible Firmware Interface Specification
E-58 12/01/02 Version 1.10
// The following configuration parameters are optional and must
// be zero to use the default values.
// The possible values for these parameters are defined below.
PXE_UINT8 DuplexMode;
PXE_UINT8 LoopBackMode;
} PXE_CPB_INITIALIZE;
#pragma pack()
#define PXE_DUPLEX_AUTO_DETECT 0x00
#define PXE_FORCE_FULL_DUPLEX 0x01
#define PXE_FORCE_HALF_DUPLEX 0x02
#define PXE_LOOPBACK_NORMAL 0
#define PXE_LOOPBACK_INTERNAL 1
#define PXE_LOOPBACK_EXTERNAL 2
E.4.7.2 Waiting for the Command to Execute
Monitor the upper two bits (14 & 15) in the CDB.StatFlags field. Until these bits change to
report PXE_STATFLAGS_COMMAND_COMPLETE or PXE_STATFLAGS_COMMAND_FAILED,
the command has not been executed by the UNDI.
StatFlags Reason
COMMAND_COMPLETE Command completed successfully. UNDI and network device is now
initialized. DB has been written.
COMMAND_FAILED Command failed. StatCode field contains error code.
COMMAND_QUEUED Command has been queued.
INITIALIZE Command has been not executed or queued.