 |
Service Forum
support board, PC repair, unlocking solutions
|
| View previous topic :: View next topic |
| Author |
Message |
FrozenAngel
Interesat
Joined: 25 Apr 2007
Posts: 14
|
 Posted: Wed May 16, 2007 8:17 am Post subject: 770X questions |
 |
|
does anyone know the location of the atmel on the 770x
under the memory cover there is a atmel 24c01 chip but not sure that is the one i have soldered and resoldered only to get eprom not available
the programer works fine (thanks again vic  ) |
|
| Back to top |
|
 |
victor
S.F. Boss
Joined: 07 Mar 2004
Posts: 2581
Location: Staff
|
| Posted: Wed May 16, 2007 1:23 pm Post subject: |
|
|
I hope you use R24C01.
It is possible that the chip to be set on other address, Open r24C01.ini and change "base_address=$AE" to "base_address=$00".
This will let the program search for the eeprom.
_________________
Victor Voinea
ALLservice HQ, Romania. |
|
| Back to top |
|
|
FrozenAngel
Interesat
Joined: 25 Apr 2007
Posts: 14
|
| Posted: Thu May 17, 2007 7:30 am Post subject: |
|
|
yes already tried that victor thanks
but I am thinking there is another chip somewhere inside was hoping someone else has done one or knows for sure that that is the atmel saving me trouble of taking this one appart it looks like its going to be harder to pull apart than the 600  |
|
| Back to top |
|
|
victor
S.F. Boss
Joined: 07 Mar 2004
Posts: 2581
Location: Staff
|
| Posted: Thu May 17, 2007 10:11 am Post subject: |
|
|
That's the one.
I figured out that you use the driven circuit, so make sure the batteries are brand new and you use the switches " /x /d /i" in the command line.
Else, I can't see other possible reason, are you sure you connect the SCL and SDA to the right pins?
_________________
Victor Voinea
ALLservice HQ, Romania. |
|
| Back to top |
|
|
FrozenAngel
Interesat
Joined: 25 Apr 2007
Posts: 14
|
| Posted: Tue May 22, 2007 3:40 am Post subject: |
|
|
ok got the connections now but problem is eprom read coming up all 00 nothing in it tried using patcher and even tried the r24rf08 as well as r24co1 both get 128 kb file but both are nothing but zeros
chip hatched ? |
|
| Back to top |
|
|
victor
S.F. Boss
Joined: 07 Mar 2004
Posts: 2581
Location: Staff
|
| Posted: Wed May 23, 2007 1:23 pm Post subject: |
|
|
| Quote: | sorry for new post but guess you missed my post in orginal victor
ok got the connections now but problem is eprom read coming up all 00 nothing in it tried using patcher and even tried the r24rf08 as well as r24co1 both get 128 kb file but both are nothing but zeros (no model or anything just blank file )
chip hatched ? |
Sorry for the delay.
Only R24C01 creates 128 bytes dumps, but do not use it to read 24RF08, or you'll damage the chip data!
On the other hand, R24RF08 makes 1K dumps all the time, or you're having some sort of malware on your PC.
100% your chip is in good condition but the circuit and/or connections to eeprom are to blame. The usual reason in this case is a bad GND connection to the locked laptop or the COM port.
[Edit]
Sorry, I see that you're trying to read a 24C01. So the things are quite opposite - do not use R24RF08, only R24C01
Besides R24RF08 must give you "eeprom not found" because the 24C01 phisical address is different, but you say that randomly it reads something. The conlcusion is only one : Your COM1 port is not acting-port address/IRQ settings wrong or hardware issue.
_________________
Victor Voinea
ALLservice HQ, Romania. |
|
| Back to top |
|
|
|
|
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
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
