君正4750的开发板烧录wince，按照提供的手册先后烧入boot.nb0和nk.nb0。
重启后，启动信息如下，一直停在DHCP那里进不了系统，请高手看一下是什么问题，谢谢！
MicrosoftWindowsCEEthernetBootloaderCommonLibraryVersion1.1BuiltJan12
201013:41:00
IngenicBootloaderv2.0forJZ4750(BuildonJan132010,at17:23:39)
DeviceDRACORunat:384MHz
Devicev1=63451222
Devicev2=63451222
SystenPowerA_GPIO_PXPE:0x30218000,UDC_DETECT_PIN:0xf,UDC_DETECT_PIN=0x4f.
+jz_nand_init
NANDFlash:0xECD5isfound
NANDFlash:3th=0x14
NANDFlash:4th=0xb6
NANDFlash:5th=0x74
LCDWidexHeight=480x272
GetLCDRegisters,LCDCFG[0x00000980],LCDCTRL[0x2000000d]
PWM:RequiredPWMfreq=50000Hz,Actualfreq=49180
SkipBatteryCheck
Getbinsourceerrorortoolarge!flag=0xffffffff,size=0xffffffff
Thereisnothissource
Systemready!
Preparingfordownload...
BootConfigureisnotfound,usingdefaults
Preparetosavesettings...
dwSectorAddr=128
Thesettingissavedatthe1thblock,0thsectorsuccessfully
CurrentsettingshavebeensavedNANDFlash
Start...
LowLevelFormat...
FormatBlockFrom257thTo4095th
Complete:100%
FormatBlockFinish
BP_OpenPartition
IsValidMBR:MBRsector=0x0
OpenPartition:InvalidMBR.Formattingflash.
EnterLowLevelFormat[0x0,0xe9a].
WriteMBR:MBRblock=0x0.
Done.
OpenPartition:PartitionExists=0x0forpart0x0.
CreatePartition:EnterCreatePartitionfor0x4.
LastLogSector:Lastlogsectoris:0x74d7f.
CreatePartition:Start=0x80,Num=0x20000.
WriteMBR:MBRblock=0x0.
IsValidMBR:MBRsector=0x0
jz_nand_read_page:UncorrectECCErrorinBlock[257]Sector[0],j=0
OpenPartition:PartitionExists=0x0forpart0x0.
CreatePartition:EnterCreatePartitionfor0xb.
CreatePartition:Start=0x1,Num=0x748ff.
WriteMBR:MBRblock=0x0.
jz_nand_read_page:UncorrectECCErrorinBlock[257]Sector[0],j=0
jz_nand_read_page:UncorrectECCErrorinBlock[257]Sector[4],j=0
OEMPredownload...
SDcardisinserted,pinlevelis0x0
dwSdClk=0.
InitMasterBootRecord
SDcardisinserted,pinlevelis0x0
dwSdClk=0.
InitMasterBootRecord
SDcardisinserted,pinlevelis0x0
dwSdClk=0.
InitMasterBootRecord
CS8900:MACAddress:ac000000
CS8900:MACAddress:0:ff:ff:ff:ff:6
INFO:Probe:CS8900isdetected.
INFO:Init:CS8900_InitOK.
DeviceMACis00:ff:ff:ff:ff:06
DeviceNameisDRACO65286
InitDHCP()::CallingProcessDHCP()
ProcessDHCP()::DHCP_INIT
EbootDHCPRetransmit()::ErrorOnSendUDP()Call
EbootDHCPRetransmit()::ErrorOnSendUDP()Call
InitDHCP()::CallingProcessDHCP()
ProcessDHCP()::DHCP_INIT
EbootDHCPRetransmit()::ErrorOnSendUDP()Call
SendDHCP()::ErrorOnDHCPRetransmit()Call
ProcessDHCP()::DHCP_INIT::SendDHCP(DHCP_DISCOVER)Error
InitDHCP()Error-FirstDHCPOptionisn'tthemessagetype
EbootDHCPRetransmit()::ErrorOnSendUDP()Call
EbootDHCPRetransmit()::ErrorOnSendUDP()Call
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