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Параметры моего USBboot.cfg:


;---------------------------------------------------------------------------------------
; USB Boot Tool Configuration File. The tool will read the USBBoot.cfg
; to get the hardware configuration of your target board.
;
; This is an sample configuration file for the Jz4750d CETUS board.
; If you are using a different board, please rename USBBoot_BOARD.cfg to USBBoot.cfg.
; If you modify the hardware of your board, modify the values in this file accordingly.
;
; First of all, you should install the driver when you boots the device from USB
; for the first time.
;
; The line starting with ';' or contents followed by ';' of a line are comments only.
;---------------------------------------------------------------------------------------

[PLL]
EXTCLK         24         ;Define the external crystal in MHz
CPUSPEED      336         ;Define the PLL output frequency
PHMDIV         3         ;Define the frequency divider ratio of PLL=CCLK:PCLK=HCLK=MCLK
BOUDRATE      57600         ;Define the uart boudrate
USEUART         1         ;Use which uart, 0/1 for jz4740,0/1/2/3 for jz4750

[SDRAM]
BUSWIDTH      16         ;The bus width of the SDRAM in bits (16|32)
BANKS           4         ;The bank number (2|4)
ROWADDR           12         ;Row address width in bits (11-13)
COLADDR           9         ;Column address width in bits (8-12)
ISMOBILE        0         ;Define whether SDRAM is mobile SDRAM, this only valid for Jz4750 ,1:yes 0:no
ISBUSSHARE        1         ;Define whether SDRAM bus share with NAND 1:shared 0:unshared

[NAND]
BUSWIDTH      8         ;The width of the NAND flash chip in bits (8|16|32)
ROWCYCLES      3         ;The row address cycles (2|3)
PAGESIZE      4096         ;The page size of the NAND chip in bytes(512|2048|4096)
PAGEPERBLOCK      128          ;The page number per block
FORCEERASE      0         ;The force to erase flag (0|1)
OOBSIZE         128         ;oob size in byte
ECCPOS               24         ;Specify the ECC offset inside the oob data (0-[oobsize-1])
BADBLACKPOS        0         ;Specify the badblock flag offset inside the oob (0-[oobsize-1])
BADBLACKPAGE       127            ;Specify the page number of badblock flag inside a block(0-[PAGEPERBLOCK-1])
PLANENUM      1         ;The planes number of target nand flash
BCHBIT           8         ;Specify the hardware BCH algorithm for 4750 (4|8)
WPPIN         0         ;Specify the write protect pin number
BLOCKPERCHIP      0         ;Specify the block number per chip,0 means ignore

[END]

;The program will calculate the total SDRAM size by : size = 2^(ROWADDR + COLADDR) * BANKNUM * (SDRAMWIDTH / 4)
;The CPUSPEED has restriction as: ( CPUSPEED % EXTCLK == 0 ) && ( CPUSPEED % 12 == 0 )
;For jz4750, the program just init BANK0(DSC0).
;Beware all variables must be set correct!

Больше всего меня заинтересовала строка:
The program will calculate the total SDRAM size by : size = 2^(ROWADDR + COLADDR) * BANKNUM * (SDRAMWIDTH / 4)
Так как оперативка у книги 64 метра, то по идее правильный конфиг у gabo, т.к 2^(13+9)*4*16/4=64Mb

Вот мои параметры USBBoot.cfg

[PLL]
EXTCLK         24         ;Define the external crystal in MHz
CPUSPEED      336         ;Define the PLL output frequency
PHMDIV         3         ;Define the frequency divider ratio of PLL=CCLK:PCLK=HCLK=MCLK
BOUDRATE      57600         ;Define the uart boudrate
USEUART         1         ;Use which uart, 0/1 for jz4740,0/1/2/3 for jz4750

[SDRAM]
BUSWIDTH      16         ;The bus width of the SDRAM in bits (16|32)
BANKS           4         ;The bank number (2|4)
ROWADDR           12         ;Row address width in bits (11-13)
COLADDR           9         ;Column address width in bits (8-12)
ISMOBILE        0         ;Define whether SDRAM is mobile SDRAM, this only valid for Jz4750 ,1:yes 0:no
ISBUSSHARE        1         ;Define whether SDRAM bus share with NAND 1:shared 0:unshared

[NAND]
BUSWIDTH      8         ;The width of the NAND flash chip in bits (8|16|32)
ROWCYCLES      3         ;The row address cycles (2|3)
PAGESIZE      4096         ;The page size of the NAND chip in bytes(512|2048|4096)
PAGEPERBLOCK      128          ;The page number per block
FORCEERASE      0         ;The force to erase flag (0|1)
OOBSIZE         128         ;oob size in byte
ECCPOS               24         ;Specify the ECC offset inside the oob data (0-[oobsize-1])
BADBLACKPOS        0         ;Specify the badblock flag offset inside the oob (0-[oobsize-1])
BADBLACKPAGE       127            ;Specify the page number of badblock flag inside a block(0-[PAGEPERBLOCK-1])
PLANENUM      1         ;The planes number of target nand flash
BCHBIT           8         ;Specify the hardware BCH algorithm for 4750 (4|8)
WPPIN         0         ;Specify the write protect pin number
BLOCKPERCHIP      0         ;Specify the block number per chip,0 means ignore

[END]

У нас разные только ROWADDR и FORCEERASE.

Очищать память пробовал не помогает все равно черный экран

Попробовал поставить Bootloader с предыдущего поста, экран не включается остается черным.

Днес ми пристигна новата книга Сложил съм я да се зарежда и от утре почвам експериментите наново. Но първо ще направя пълен архив и след като DenGame потвърди, че работи ще се върна към старите си опити

--- По Руски -----
Сегодня пришла новая книга. Сейчас поставил ее на зарядке и завтра начинаю эксперименты снова. Но сначале сделаю полной архив и если DenGame потвердит, что все в порядке, вернусь к старым попытки