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Difficulties to read a 300 ZX chip

 
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Randall Raines



Joined: 16 Feb 2008
Posts: 15

PostPosted: Fri Apr 18, 2008 6:29 am    Post subject: Difficulties to read a 300 ZX chip Reply with quote

Sorry to post this here, I supppose this is not the place of this topic, but I don't find any other else.

I want to read a 300 ZX stock chip to find the fuel Map and the timing Map to compare with a Ash.bin file but when I read the chip in my eprom reader I have a strange file like this :

00 00 00 00 00 00 ...
00 00 00 00 00 00...
00 00 00 00 00 00...

And like that on all the table from 0000 to 7FFF I don't understand ...

This strange file occure when I tried to read a 180 SX stock file, from 0000 to 3FFF there is a file like this :

04 16 04 16 04 16 04 ...
04 16 04 16 04 16 04 ...

and from 4000 to 7FFF it's a hex file. This make me a little embarrsed because I can't read the K value and the Fuel map...

I precise I have a Willem Eprom programmer, and I think I don't have enough voltage to read the eprom that's why I have a strange file like that. I ask you if you have any other solution ?

Thank you for reading to me ! Wink
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TXQ45



Joined: 09 Dec 2003
Posts: 23
Location: DFW

PostPosted: Thu Jul 24, 2008 2:14 pm    Post subject: Re: Difficulties to read a 300 ZX chip Reply with quote

Randall Raines wrote:
Sorry to post this here, I supppose this is not the place of this topic, but I don't find any other else.

I want to read a 300 ZX stock chip to find the fuel Map and the timing Map to compare with a Ash.bin file but when I read the chip in my eprom reader I have a strange file like this :

00 00 00 00 00 00 ...
00 00 00 00 00 00...
00 00 00 00 00 00...

And like that on all the table from 0000 to 7FFF I don't understand ...

This strange file occure when I tried to read a 180 SX stock file, from 0000 to 3FFF there is a file like this :

04 16 04 16 04 16 04 ...
04 16 04 16 04 16 04 ...

and from 4000 to 7FFF it's a hex file. This make me a little embarrsed because I can't read the K value and the Fuel map...

I precise I have a Willem Eprom programmer, and I think I don't have enough voltage to read the eprom that's why I have a strange file like that. I ask you if you have any other solution ?

Thank you for reading to me ! Wink


Assuming you have the programmer set for the right chip??
You can use Romeditor or Zcontrol to read valves not in hex
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