Service Forum

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

I've built and connected the circuit to an external pc, managed to get the bin file successfully.

trying to get the password from that file with ibmpass 2.1 lite, but can't get anything usefull out of it, if someone can check it for me plz.

thx.

A link to the bin file:

http://uploaded.to/?id=uvdwpj

victor · S.F. Boss Joined: 07 Mar 2004 Posts: 2581 Location: Staff

I guess I replied to you via email already.

The binary is not good, only garbage in there.
SIPROG works like a charm with T30, check the circuit and connections.
Use itester to test the interface and try again only when you are pretty sure the circuit is good.

And what's the most important: Do it with calm and patience...
_________________
Victor Voinea
ALLservice HQ, Romania.

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

bob · Posted: Mon Mar 26, 2007 2:41 pm Post subject:

If the circuit is fine, then the only problem could be with the serial port.
SIPROG needs a stronger COM port, one that is used by older machines for example.

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

victor · S.F. Boss Joined: 07 Mar 2004 Posts: 2581 Location: Staff

Hm, The itester shows it's OK. Anyway, see the SDA SCL voltage.

I guess the problem is with the port or the timer are not started with a proper value or the processor changes speed. Are you running any applications in background?
If you use a laptop as tech PC, plug the AC or switch to a stable power scheme. It is very important that the processor frequency to be stable, because the switching periods could be altered.

But, my guess is that you have a port issue. Use a PC with a native port or at least a serial adapter based on UART chips. For example USB2COMs are not good to work with those programmers.

Finally, if your port curent is too low, you have to build the driven programmer to eliminate this issue.
_________________
Victor Voinea
ALLservice HQ, Romania.

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

I'm not connecting it to a laptop, just a regualr pc, I have Gigabyte k8ms motherboard, nothing running in the back.

U said check the voltage on the SDA and SLC, what's the normal value?

And just to make sure i'll run it tomorrow or the day after that on my brother pc, think he has ABIT motherboard.

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

Victor, i've rebuilt my circuit now and i've chcked the voltage on the sdl and scl and i'm getting this values:

sda 1 -0.73
0 4.8

scl 1 -3.86
0 6.6

are those values normal?

Cuz I keep getting the same dump file which is full of nothing in it...

victor · S.F. Boss Joined: 07 Mar 2004 Posts: 2581 Location: Staff

No, the values are totally wrong. See the itester help...
_________________
Victor Voinea
ALLservice HQ, Romania.

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

victor · S.F. Boss Joined: 07 Mar 2004 Posts: 2581 Location: Staff

Are you saying you switched the diodes polarity?
The SCL voltage indicates that the zener is not doing its job.

We can talk about this all day long. I suggest you to check your resistors and diodes. Make sure the diodes are 5.1Volts Zener or you will burn the board for good!

A helpfull hand from a more skilled friend or relative is sometimes necessary, I mean in general for those with little experience in this area.
_________________
Victor Voinea
ALLservice HQ, Romania.