MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 Write failure on M27C1000 in GQ-4X

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T O P I C    R E V I E W
Murray Posted - 08/22/2009 : 06:14:28
I have two M27C1000 chips that I'm trying to program with my GQ-4X. When I select the device, the message "This chip needs a wire jumper from Address header A23 to ZIF Pin24" is displayed.

The GQ-4X doesn't have an address header so I tried programming them with no jumper wire connected. Both fail at exactly the same address at 51% complete.

What can I do to get these working? Where is the equivalent of A23 on this programmer?
2   L A T E S T    R E P L I E S    (Newest First)
Murray Posted - 08/25/2009 : 07:57:30
Great, thank you!

Edit: Written and verified ok. Problem solved. :)
ZLM Posted - 08/24/2009 : 22:09:52
pin 2 of ZIF socket
or
use http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4288

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