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curamrdan
Czech Republic
3 Posts |
 Posted - 08/01/2009 : 06:56:41
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Hello,
i just purchaged GQ-3X programmer. I read/write succesfully M27C256B.
M27128A i can only read, when i try to write, bar stay on 1% and than give me an error on adress 0x000000, 0xAA, 0xAE .
Eprom is erased by china UV eraser, blank test is OK.
I tried lower speed and adding vcc=6.2V string in devices.txt on correct ID. Doesnt have sense.
Maybe eprom is death, i doesnt have another yet..
img132.imageshack.us/img132/6076/erorzapis.jpg
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Mrdat prdele |
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| Reply #1
curamrdan
Czech Republic
3 Posts |
Posted - 08/01/2009 : 16:21:54
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| Now i tried it with external DC 12V supply. No change, still same error :-( |
Mrdat prdele |
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| Reply #2
ZLM
2945 Posts |
Posted - 08/02/2009 : 07:09:16
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check you EPROM pins are clean and contact good with the programmer ZIF.
Also, try another 27C128 chip. |
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| Reply #3
curamrdan
Czech Republic
3 Posts |
Posted - 08/02/2009 : 14:11:03
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| Success! I try to downgrade programer software on my dektop PC from 4.02 to 3.03, but it doesnt work due installed USB 2.01 driver. So i take my notebook, first i install 3.03 software with USB 1.0 (1.3.0 shows during instalation). But it shows initializon error when i connect programmer. Than i installed newest 4.03 software and leave old USB 1.0 driver. Now i flashed M27128A without problem. No external power supply. :-) |
Mrdat prdele |
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Topic |
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Cant write M27128A
