高人，请问如何修改uboot，让720n识别128m内存

scola

请问怎样修改uboot，让720n 识别 128m 内存。。 我想在720n上面跑python，所以要大内存。。请问如何在修改uboot

请不要胡乱输入以及粘贴、复制等方式灌水

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scola

顶一下

scola

再顶，再顶，顶顶

网络旺旺

我记得AR9331最大支持DDR 400 64M....

scola

网络旺旺 发表于 2013-8-5 19:58
我记得AR9331最大支持DDR 400 64M....

对，好像是，我的ddr 超频到 425

kyd12345

scola 发表于 2013-8-5 20:55
对，好像是，我的ddr 超频到 425

AR9331最大支持64M lz不要挣扎了

comeon010

LZ不工挣扎了。

OpenWrt 官网原话（当然这是用来描述703的，不过720在硬件上和703相同）：

64MB RAM ModThe Device uses a DDR1 16Mbit x 16bit (16Mibit*16=256 mebibit. 256 mebibit/8=32MiByte) 400MHz chip Zentel A3S56D40FTP. Replace it with any 32Mbit x 16bit chip. 333MHz instead of 400MHz also works fine. It's quite hard to find these chips. One of the ways to get them is to have a look at DDR SO-DIMM (because SO-DIMM modules are shipped with x16 chips). Since there are no 64Mbit x 16bit DDR1 Chips available → no 128 MB mod!
The most easy approach is to seek for a 4-chip DDR 256 MB module. These all have x16 chips too. Chips only on one side (not to be confused with double-sided 256 MB modules with 4 chips on each side) and only 4 of them - that's the best chance to get some. They represent a small percent among usual 8-chip modules but this is equalized with the amount and "cheap as dirt" price of such DDR 256 MB modules.
Working chips:

• Hynix HY5DU121622DTP-D43 (From Mustang DDR SO-DIMM 512 MB)
  
• Hynix HY5DU121622CTP-D43 (From Hynix  DDR SO-DIMM PC2700S-25330 512MB DDR 333MHz CL 2.5, chips are 400Mhz compatible due to "D43" marking.)
  
• Infineon HYB25D512160BE (From Infineon DDR SO-DIMM 512 MB)
  
• Elpida EDD5116ADTA-6B-E (From Elpida DDR SO-DIMM 512 MB)