AWWWW Crap!

[Adam Talbot]

OK, I have a bios chip that my flash ROM programmer cant program... The chip is a Amic A290021TL-70.  OK, I would like to buy a new chip from a different manufacture. What do I need to keep in mind when I buy a replacement chip?
Here is the data sheet from the off brand chip.
http://www.amictechnology.com/pdf/A29002.pdf
-Adam Talbot

[Ronald G. Minnich]

send me the output from flash_rom first, to make sure you are enabling 
flash write.

ron

[Adam Talbot]

No, I have a hardware programmer...
I am/was trying to find out if I could use a different chip on my
motherboard.  My programmer does not support the Amic bios chip that was on
the mother board.  I found a sst39sf020, its the same speed 70ns and took a
flash and works great. By any chance do you no what spec's I need to keep in
mind when replacing a bios chip??  I no better then to mix 5v and 3v chips,
what else is there??
-Adam Talbot

----- Original Message ----- 
From: "Ronald G. Minnich" 
To: "Adam Talbot" 
Cc: 
Sent: Wednesday, December 08, 2004 9:31 PM
Subject: Re: AWWWW Crap!
> send me the output from flash_rom first, to make sure you are enabling
> flash write.
>
> ron
>
> Linuxbios mailing list
> [e-mail]
> http://www.clustermatic.org/mailman/listinfo/linuxbios

[Bari Ari]

Adam Talbot wrote:

I found a sst39sf020, its the same speed 70ns and took a
> flash and works great. By any chance do you no what spec's I need to keep in
> mind when replacing a bios chip??  I no better then to mix 5v and 3v chips,
> what else is there??

How much time do you have? Take a look at a few flash vendors product 
sites for more info:

http://www.amd.com/us-en/FlashMemory/ProductInformation/0,,37_1447,00.html

http://developer.intel.com/design/flash/index.htm?iid=embnav1+flash&

http://www.sst.com/products/

http://sharp-world.com/products/device/lineup/ic/flashmemory/index.html

-Bari

[Ronald G. Minnich]

On Wed, 8 Dec 2004, Adam Talbot wrote:
> I am/was trying to find out if I could use a different chip on my
> motherboard.  My programmer does not support the Amic bios chip that was on
> the mother board.  I found a sst39sf020, its the same speed 70ns and took a
> flash and works great. By any chance do you no what spec's I need to keep in
> mind when replacing a bios chip??  I no better then to mix 5v and 3v chips,
> what else is there??

28, 39, and esp. 49 are very different, of course.

speed matters, we have found, which is not surprising.

ron