I have the enhanced willer burner... not the dual willem
so this is the burner i'm talking about



i'm using it since 2 year now, i always burned atmel 29c256 with no problem, now i'm using sst27sf512 and i have some problem...

when the chip is virgin, i can burn my program (using 0x8000 offset), and its working fine. But i know these chips need to be erase before burning a new bin. So, my problem is i can't erase them, i have 2 chips and both do the same: i set the jumper 1,2,4,6,10,11,12 off and 3,5,7,8,9 on, i remove the safety jumper, i click on the button beside the zif socket to put the led in front of w27c, i have my software set to pcb3 and chip selected to 27sf512... don't work.

i'm so frustrated right

 

do what i did buy a moates. Sorry for the lack of help

 

+1

 

mmckay...


let say i want to keep the burner i have right now... any idea? i tried at least 4 hours.

 

when my willem took a ---- i spent HOURS testing and tracing ----. Ended up throwing it out. Probably 1 bad component.

 

Never give up... that's what i have done... i found a way to make them work! I can't believe i spent more than 8 hours doing everything to make it works.

Here is "my" procedure to erase sst27sf512 on the Enhanced willem burner, not the dual.

-be sure to have the latest software .97ja
-make sure the safety jumper is remove
-start the prog and make sure your burner led are both on normal
-push the buton(chip selection) until the led comes to "w27c"
-put the chip in
-read the chip
-clear the cache
-push the buton again until the led comes to normal
-click erase

want to erase another one?

repeat these steps
-push the buton until the led comes to "w27c"
-put the chip in
-read the chip
-clear the cache
-push the buton again until the led comes to normal
-click erase
-----------------------------------------------------------------

let the voltage on normal
to put the chip selector on w27c, i must pres the voltage and chipselector a couple of time to make it work, don't know if you have the same issue.

for me its the only way to make it work, i have try over 100 différend procedure and it fail, so i dunno if it will work for you.

-Labatt50

 

Cool, congrats on making it work, I don't think I'd have the patience for that.

 

How have you been setting up your enhanced burner to burn those AT29C256 chips? I am having the hardest time figuring it out.
i have the jumper in from 3-31 but other than that i am completely lost, i would appreciate it if you would give me a hand here, maybe a pic with it setup for burning and then erasing AT29C256 chips if that is what you have been using. thank you

 

to burn atmel 29c256 with the enhanced willem... you don't need to jump 3-31...

set your burner this way



and set your software this way.

 

Thank you, my laptop does not have a 25 pin serial port, only a 9 pin so I went to radio shack and bought an adapter to plug into the 9 pin in my computer and then the 25 pin cable that came with the burner. It still says check power and connection so i will go and get a serial cable that just plugs into my usb. how do you set it up for erasing?

THANK YOU!!!!!