MCUmall EPROM BIOS Chip Burner Forum
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 Using The Enhanced/Dual power Willem Programmer
 *Help* error message when i program/verify
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4 Posts

Posted - 07/02/2009 :  13:39:30  Show Profile  Reply with Quote
I just bought my dual power Willem programmer and using it for the first time. I'm using SST49FL020 LPC chip and it erases/reads and shows me the electronic ID as 0x25 0x42 [....], however when I try to verify or program i get "ERROR at 0x000001 Chip x 42 buffer= 0x8C"

The hardware is present and I am powering via 12V DC, and my DIP switches are configured like the image. Can anyone please help me?

The PCB version is 5.0C, but I am using 97.ja and I have the jumper set to PCB3.0

I have a feeling the ID is incorrect and my chip is damaged..can anyone confirm?

Edited by - ryry310 on 07/02/2009 14:00:24
Reply #1


2942 Posts

Posted - 07/03/2009 :  16:01:08  Show Profile  Reply with Quote
The ID is incorrect.

Try to use software 0.98D6.
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Reply #2


4 Posts

Posted - 07/09/2009 :  09:32:17  Show Profile  Reply with Quote
Thanks, but can you tell me where I can download the software 0.98D6?

It's not the one that came with my cd.
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Reply #3


4 Posts

Posted - 07/09/2009 :  10:25:03  Show Profile  Reply with Quote
I've tried .97ja and .98D5 still ID is wrong.. (I get [.....] Is there something wrong with my bios chip?
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Reply #4


United Kingdom
79 Posts

Posted - 07/15/2009 :  02:09:04  Show Profile  Reply with Quote
perhaps you need other than 5 or 5.6v vcc to flash it
check the datasheet i cant find it
often these eeproms need a higher vcc or they wont program

just a thought...??? not sure myself i never did this or needed to

for eproms you need 6.25v {5v5.6v jumper removed}
with your 5.0c
i have the same ?? revision

you also need to use pcb5.0c jumpers and use v5.0 98D8 or D10
its more reliable

machine toshiba equium laptop usb only type
p5b asus main machine
thinking of adding dual lpt pci card
both used for top and lpt via usb where i can

old p2 programming grumbling tank with xp sp3 for true serial and lpt

all machines bios set to enable bios plug and play aware o/s and lpt spollers services and drivers removed
legacy detection enabled

Edited by - simeon on 07/15/2009 02:14:18
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