WRT54G V8 Ram Upgrade from 8 to 32 mb w/pictures!

Post new topic   Reply to topic    DD-WRT Forum Index -> Broadcom SoC based Hardware
Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8  Next
View previous topic :: View next topic  
Author Message
Juggalo_X
DD-WRT Novice


Joined: 13 Dec 2007
Posts: 42
PostPosted: Sat Dec 15, 2007 20:19    Post subject: Reply with quote
Juggalo_X wrote:
here is the sticky

Click


PS> wrt54g -erase:nvram is correct
Back to top View user's profile Send private message
Sponsor
RolF
DD-WRT User


Joined: 28 Sep 2007
Posts: 349
Location: CCCP
PostPosted: Sat Dec 15, 2007 20:19    Post subject: Reply with quote
try tjtag in downloads -> others -> tornado
Back to top View user's profile Send private message Visit poster's website
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sat Dec 15, 2007 22:02    Post subject: Reply with quote
alright, just completed the tjtag as per the diagram in the file.

*edit* here are pictures!

Jtag Building:




im scared to plug it to my pc :P

also, what is the comand that i should run to clear the nvram?

Last edited by dragon-fly on Mon Dec 17, 2007 6:09; edited 1 time in total
Back to top View user's profile Send private message
RolF
DD-WRT User


Joined: 28 Sep 2007
Posts: 349
Location: CCCP
PostPosted: Sat Dec 15, 2007 22:23    Post subject: Reply with quote
tjtag -erase:nvram /noemw


R.
Back to top View user's profile Send private message Visit poster's website
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sat Dec 15, 2007 22:42    Post subject: Reply with quote
hmmm. i get an error that it couldnt access giveio device. what do i do?
Back to top View user's profile Send private message
RolF
DD-WRT User


Joined: 28 Sep 2007
Posts: 349
Location: CCCP
PostPosted: Sat Dec 15, 2007 22:47    Post subject: Reply with quote
copy giveio.sys to c:\windows\system32\drivers\ and use loaddrv.exe to start it :)

R.
Back to top View user's profile Send private message Visit poster's website
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sat Dec 15, 2007 23:00    Post subject: Reply with quote
cool, it works.

i ran the nvram erase comand

and the router works again!

now runing
nvram get sdram_init
give me 0x0002 as a result.

this makes sense when compared to the page here
http://wl500g.dyndns.org/sdram.html
8MB SDR 4 Meg x 16 0x0002
as what i originally had was indeed 8 mb of SDR from samsung, 4meg x16.
if that is correct, then i believe that a sdram init of 0x000a is the one i need for my new ram module. i just find letters wierd in these values. hehe.
Back to top View user's profile Send private message
RolF
DD-WRT User


Joined: 28 Sep 2007
Posts: 349
Location: CCCP
PostPosted: Sat Dec 15, 2007 23:03    Post subject: Reply with quote
now wrong value in sdram_init is not a problem when you have jtag :)

R.
Back to top View user's profile Send private message Visit poster's website
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sat Dec 15, 2007 23:04    Post subject: Reply with quote
RolF wrote:
now wrong value in sdram_init is not a problem when you have jtag :)

R.


i agree completely. Smile thats why i wanst mad at having to make a jtag.

one thing i just noticed. is it possible tat in the original set of comands there is a 0 missing?
Quote:
nvram set sdram_init=0x008
nvram set sdram_ncdl=0x000
nvram commit
reboot

as in the 0x008, is it not supposed to be 0x0008? (im referring to the ram page above)

in any case, i assume that i need to input

nvram set sdram_init=0x000a
nvram set sdram_ncdl=0x000
nvram commit
but again, before i input that, what is sdram_ncdl? and is ther a 0 missing?
Back to top View user's profile Send private message
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sat Dec 15, 2007 23:12    Post subject: Reply with quote
In any case, i was impatient. i figured i had a TJTAG anyways, so i executed the comands that i posted in the last post.

end result?

IT WORKS!!!! WOOHOOO!!!! 32 mb ram. totally awesome.

thus, to recap:

these are the comands to get a WRT 54 G v8 to recognize 32 mb of ram
dragon-fly wrote:
nvram set sdram_init=0x000a
nvram set sdram_ncdl=0x000
nvram commit
reboot


TJTAG really works (using the dumbed down versin included in the tjtag .rar - no need to connect all of the grounds as per here
Pin 54 (A12) is effectively routed to the cpu.
DD WRT is totally awesome.
and these guys are great.

i do want to know what sdram_ncdl is though

Last edited by dragon-fly on Tue Dec 18, 2007 18:24; edited 4 times in total
Back to top View user's profile Send private message
RolF
DD-WRT User


Joined: 28 Sep 2007
Posts: 349
Location: CCCP
PostPosted: Sat Dec 15, 2007 23:14    Post subject: Reply with quote
if you look in CFE (bootloader) there is sdram_ncdl=0x0 , this value is for first time start to recalculate ram timings, so i think no diference 0x0 or 0x0000 anyway its 0 :D

R.
Back to top View user's profile Send private message Visit poster's website
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sat Dec 15, 2007 23:14    Post subject: Reply with quote
RolF wrote:
if you look in CFE (bootloader) there is sdram_ncdl=0x0 , this value is for first time start to recalculate ram timings, so i think no diference 0x0 or 0x0000 anyway its 0 :D

R.


cool. thanks alot guys!

i'll be updating the first post with all the info for others to see Smile
Back to top View user's profile Send private message
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sun Dec 16, 2007 0:23    Post subject: Reply with quote
First post updated!
comments are welcome on how to improve this "pseudo-guide"
Back to top View user's profile Send private message
Juggalo_X
DD-WRT Novice


Joined: 13 Dec 2007
Posts: 42
PostPosted: Sun Dec 16, 2007 17:13    Post subject: Reply with quote
glad to see you got it all up and running. jtag is a great tool! i do feel bad for giving you the wrong commands but thankfully all was not lost!

im sure many others will b e doing your mod! good job!
Back to top View user's profile Send private message
dragon-fly
DD-WRT User


Joined: 15 Dec 2007
Posts: 65
PostPosted: Sun Dec 16, 2007 17:35    Post subject: Reply with quote
Juggalo_X wrote:
glad to see you got it all up and running. jtag is a great tool! i do feel bad for giving you the wrong commands but thankfully all was not lost!

im sure many others will b e doing your mod! good job!


No problem! you made me make a Jtag, which is good anyways. if in the future overclocking becomes supported or something, i will already have a JTAG. and i am also contemplating how to change the FLASH chip from 2 mb to some larger number. too bad my 8 mb SD card does not have the right type of flash chip (the pins were oriented in the wrong direction - very bad start. lol)

and besides, its also a good thing, because if somebody else messes up, atleast they will know how to make and use a jtag. Smile (maybe i should change that previous post where i wrote it was a serial cable - its a Parallel cable)
Back to top View user's profile Send private message
Goto page Previous  1, 2, 3, 4, 5, 6, 7, 8  Next Display posts from previous:    Page 2 of 8
Post new topic   Reply to topic    DD-WRT Forum Index -> Broadcom SoC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum