MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
 Password:
Save Password
Forgot your Password?

 All Forums
 MCUmall Forums
 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 Help with 87c257		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Kutche.net

USA
6 Posts
Posted - 02/07/2012 :  15:10:18  Show Profile  Reply with Quote
I need help desperately.
I am trying to copy and burn SUCCESSIVELY ST M87C257's

They appear to read ok, and write and verify the new chips.. Yet the new chips do not work only the original..

What am I doing wrong or did I waste $100. I see a lot of other posts about problems with 87c257's

I bought and expected this to work based on the comparability list.

I wanted something that would work when I needed not after spending days trying to get help...

Now I am out of time and need your help... I have 36 hours to complete this task.

Thanks javascript:insertsmilie('')
Jerry Kutche
Reply #1

ZLM

2937 Posts
Posted - 02/15/2012 :  00:06:11  Show Profile  Reply with Quote
If the chip can be verified, then the problem is not the programmer. It may be wrong data file, or something else.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
MCUmall EPROM BIOS Chip Burner Forum © Copyright 2003 - 2009 Mcumall Electronics Inc. Go To Top Of Page
Generated in 0.09 sec. Snitz Forums 2000