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| #####    Boot for Nor Flash Main Menu   ##### #####     EmbedSky USB download mode     #####
 
 [1] Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash
 [2] Download Eboot (eboot.nb0) to Nand Flash
 [3] Download Linux Kernel (zImage.bin) to Nand Flash
 [5] Download CRAMFS image to Nand Flash
 [6] Download YAFFS image (root.bin) to Nand Flash
 [7] Download Program (uCOS-II or TQ2440_Test) to SDRAM and Run it
 [8] Boot the system
 [9] Format the Nand Flash
 [0] Set the boot parameters
 [a] Download User Program (eg: uCOS-II or TQ2440_Test)
 Download LOGO Picture (.bin) to Nand  Flash
 [l] Set LCD Parameters
 [n] Enter TFTP download mode menu
 [o] Download u-boot to Nor Flash
 [r] Reboot u-boot
 [t] Test Linux Image (zImage)
 [q] quit from menu
 Enter your selection: 1;烧写uboot
 USB host is connected. Waiting a download.
 
 Now, Downloading [ADDRESS:30000000h,TOTAL:231066]
 RECEIVED FILE SIZE:  231066 (225KB/S, 1S)
 
 NAND erase: device 0 offset 0x0, size 0x40000
 Erasing at 0x20000 -- 100% complete.
 OK
 
 
 NAND write: device 0 offset 0x0, size 0x38690
 
 
 Writing data at 0x38000 -- 100% complete.
 231056 bytes written: OK
 ////////////////////////////////////////////////////////////////////
 问题 :
 我对红字的理解是,先从0x20000开始,擦除ox40000大小的空间到0x60000,再从0x38000处开始烧写,因为文件大小是0x38690,所以少些这么多单元,
 可是 这都到达0x70690了呀,这超出了前面擦除的范围啊,在下刚学请指教。
 
 
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