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" <rminnich(a)lanl.gov&gt;
To: "Adam Talbot" <talbotx(a)comcast.net&gt;
Cc: <Linuxbios(a)clustermatic.org&gt;
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

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[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