nt.bin超过32M，eboot不能正常下载启动的问题

我用的是smdk6400的开发板，内存128mbyte,flash6
4mbyte,wince6.0
当然选择的组件比较多时生成的nk.bin会超过
32mbyte,eboot不能下载。
修改了以下几个地方：
编译的时候IMGRAM64选项是选中的
我的config.bib文件修改如下：
IF WINCEDEBUG = retail
#define NKNAME NK
#define NKSTART 80100000
#define NKLEN 04000000 ; 41 MB

#define RAMNAME RAM
#define RAMSTART 82A00000
#define RAMLEN 01f00000 ; 70 MB
ELSE
#define NKNAME NK
#define NKSTART 80100000
#define NKLEN 03700000 ; 55 MB

#define RAMNAME RAM
#define RAMSTART 83800000
#define RAMLEN 03800000 ; 56 MB
ENDIF
image_cfg.h文件修改的部分如下：

#define EBOOT_FILE_CACHE_OFFSET (0x00100000)
#define EBOOT_FILE_CACHE_PA_START (DRAM_BASE_PA_START+EBOOT_FILE_CACHE_OFFSET)
#define EBOOT_FILE_CACHE_CA_START (DRAM_BASE_CA_START+EBOOT_FILE_CACHE_OFFSET)
#define EBOOT_FILE_CACHE_UA_START (DRAM_BASE_UA_START+EBOOT_FILE_CACHE_OFFSET)
#define EBOOT_FILE_CACHE_SIZE (0x03000000)

#define EBOOT_USB_BUFFER_OFFSET (0x03100000)
#define EBOOT_USB_BUFFER_PA_START (DRAM_BASE_PA_START+EBOOT_USB_BUFFER_OFFSET)
#define EBOOT_USB_BUFFER_CA_START (DRAM_BASE_CA_START+EBOOT_USB_BUFFER_OFFSET)
#define EBOOT_USB_BUFFER_UA_START (DRAM_BASE_UA_START+EBOOT_USB_BUFFER_OFFSET)
#define EBOOT_USB_BUFFER_SIZE (0x03000000)

//------------------------------------------------------------------------------

// NK Area
#define IMAGE_NK_OFFSET (0x00100000)
#define IMAGE_NK_PA_START (DRAM_BASE_PA_START+IMAGE_NK_OFFSET)
#define IMAGE_NK_CA_START (DRAM_BASE_CA_START+IMAGE_NK_OFFSET)
#define IMAGE_NK_UA_START (DRAM_BASE_UA_START+IMAGE_NK_OFFSET)
#define IMAGE_NK_SIZE (0x4000000)
image_cfg.inc文件修改部分如下：
EBOOT_FILE_CACHE_OFFSET EQU (0x00100000)
EBOOT_FILE_CACHE_PA_START EQU (DRAM_BASE_PA_START+EBOOT_FILE_CACHE_OFFSET)
EBOOT_FILE_CACHE_CA_START EQU (DRAM_BASE_CA_START+EBOOT_FILE_CACHE_OFFSET)
EBOOT_FILE_CACHE_UA_START EQU (DRAM_BASE_UA_START+EBOOT_FILE_CACHE_OFFSET)
EBOOT_FILE_CACHE_SIZE EQU (0x03000000)

EBOOT_USB_BUFFER_OFFSET EQU (0x03100000)
EBOOT_USB_BUFFER_PA_START EQU (DRAM_BASE_PA_START+EBOOT_USB_BUFFER_OFFSET)
EBOOT_USB_BUFFER_CA_START EQU (DRAM_BASE_CA_START+EBOOT_USB_BUFFER_OFFSET)
EBOOT_USB_BUFFER_UA_START EQU (DRAM_BASE_UA_START+EBOOT_USB_BUFFER_OFFSET)
EBOOT_USB_BUFFER_SIZE EQU (0x03000000)

;//------------------------------------------------------------------------------

;// NK Area
IMAGE_NK_OFFSET EQU (0x00100000)
IMAGE_NK_PA_START EQU (DRAM_BASE_PA_START+IMAGE_NK_OFFSET)
IMAGE_NK_CA_START EQU (DRAM_BASE_CA_START+IMAGE_NK_OFFSET)
IMAGE_NK_UA_START EQU (DRAM_BASE_UA_START+IMAGE_NK_OFFSET)
IMAGE_NK_SIZE EQU (0x04000000)
eboot.bib文件修改如下：
FLSCACHE 80100000 03000000 RESERVED
USB_BUF 83100000 03000000 RESERVED

每次下载到如下如下位置就不动了，死掉了，不知是什么原因，
不知道大家的nk.bin超过32m以后是怎么处理的。

看看eboot下载程序那部分的缓冲地址