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)
 GQ-4X AT29C020 Top Boot Sector won't unprotect.

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

Screensize:
UserName:
Password:
Format Mode:
Format: BoldItalicizedUnderlineStrikethrough Align LeftCenteredAlign Right Horizontal Rule Insert HyperlinkInsert EmailInsert Image Insert CodeInsert QuoteInsert List Spell Checker
   
Message:

* HTML is OFF
* Forum Code is ON
Smilies
Smile [:)] Big Smile [:D] Cool [8D] Blush [:I]
Tongue [:P] Evil [):] Wink [;)] Clown [:o)]
Black Eye [B)] Eight Ball [8] Frown [:(] Shy [8)]
Shocked [:0] Angry [:(!] Dead [xx(] Sleepy [|)]
Kisses [:X] Approve [^] Disapprove [V] Question [?]

   Insert an Image File
 Check here to include your profile signature.
    

T O P I C    R E V I E W
petedcurtis Posted - 06/08/2013 : 02:40:48
Hi, Trying to re-program AT29C020. Get good ID. Do an Erase, still get not blank. In Unlock /Lock did a All sector read and it tells me the Top Boot sector is protected. Do an All sector unprotect, but it remains protected. Wrote FF but top sector is protected so no change. The Single sector commands are greyed out. How can I unprotect the top boot sector?
Peter C.
1   L A T E S T    R E P L I E S    (Newest First)
ZLM Posted - 06/09/2013 : 22:31:31
Try to slow down the speed. If it still not works, then you need to find another unprotected AT29C020.

MCUmall EPROM BIOS Chip Burner Forum © Copyright 2003 - 2009 Mcumall Electronics Inc. Go To Top Of Page
Generated in 0.05 sec. Snitz Forums 2000