MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X, GQ-3X, GQ-4X)
 ST 27C256B 15C1 PLCC-32
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rgarito

2 Posts

Posted - 03/25/2017 :  08:55:52  Show Profile  Reply with Quote
Hello. I am having difficulties reading this chip using the GQ-4x v4 Programmer with the ADP-062 adapter and 7.11 firmware/3.0 driver. I have tried all speeds and even the ID reads give different results every time (and none of the ID read attempts match 208d as the data sheet specifies).

This is a known-good EPROM out of a working device.

I have successfully used this reader to read other EPROMS in the past (but not of this type) without any issues.

Thoughts?

Edited by - rgarito on 03/25/2017 10:09:14
Reply #1

anniel

1996 Posts

Posted - 03/25/2017 :  10:36:25  Show Profile  Reply with Quote
Check your pin for good contact between chip-adapter-programmer.

You should be able to get a chip ID before doing something else.
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Reply #2

rgarito

2 Posts

Posted - 03/25/2017 :  10:42:17  Show Profile  Reply with Quote
quote:
Originally posted by anniel

Check your pin for good contact between chip-adapter-programmer.

You should be able to get a chip ID before doing something else.



Yep, I already verified that. The adapter is brand new, too (the programmer itself is about a year old, and works fine with other devices). I see another post further down where someone else is having problems with the Chip ID on the v4 box (different chip) and there was a post that there could be a new bug in the firmware/software?
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