Based on intel 82802ab/82802ac datasheet. There is Top Block Lock. TBL# pin disables writing of highest addressable block when it is low.
When #TBL pin was desoldered and connected to Vcc (Is it right way to put it high?) Flashing with flashrom was succesful. Verify was ok.
It wasn't possible to write that chip with flashrom or uniflash before that.
There is also WP# pin to enable or disable writing other blocks.
Datasheet is http://download.intel.com/design/chipsets/datashts/29065804.pdf
Hello,
Soldering #TBL to Vcc seems aceptable to me. i always use a resistor of 1k..10k in series but that is just to be on the extrem safe side...
next step is finding out to what the original #TBL pad is connected .. if #WP is comming from some chip #TBL might be near it on that chip....
greetings, todthgie
----- Original Message ----- From: Jouni Mettälä To: linuxbios@linuxbios.org Sent: Friday, July 06, 2007 22:40 Subject: [LinuxBIOS] ticket 7 (flashing ICH-x mainboard)
Based on intel 82802ab/82802ac datasheet. There is Top Block Lock. TBL# pin disables writing of highest addressable block when it is low.
When #TBL pin was desoldered and connected to Vcc (Is it right way to put it high?) Flashing with flashrom was succesful. Verify was ok.
It wasn't possible to write that chip with flashrom or uniflash before that.
There is also WP# pin to enable or disable writing other blocks.
Datasheet is http://download.intel.com/design/chipsets/datashts/29065804.pdf
On Fri, Jul 06, 2007 at 11:40:54PM +0300, Jouni Mettälä wrote:
Based on intel 82802ab/82802ac datasheet. There is Top Block Lock. TBL# pin disables writing of highest addressable block when it is low.
When #TBL pin was desoldered and connected to Vcc (Is it right way to put it high?) Flashing with flashrom was succesful. Verify was ok.
Yeah, Vcc is fine. If you want to be super safe put a 10k resistor but it's not strictly needed.
If the soldering is needed or not depends on the mainboard design. Which mainboard was this?
//Peter
-
Jouni Mettälä -
Peter Stuge -
todthgie