https://www.coreboot.org/index.php?title=Board:gigabyte/ma785gmt&feed=atom&action=history
Board:gigabyte/ma785gmt - Revision history
2024-03-28T19:55:57Z
Revision history for this page on the wiki
MediaWiki 1.40.0
https://www.coreboot.org/index.php?title=Board:gigabyte/ma785gmt&diff=17199&oldid=prev
Siro: point to Gigabyte_Dual_bios
2015-10-28T14:58:19Z
<p>point to Gigabyte_Dual_bios</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:58, 28 October 2015</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l7">Line 7:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Dual BIOS ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Dual BIOS ==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">This </del>board <del style="font-weight: bold; text-decoration: none;">has a dual </del>BIOS <del style="font-weight: bold; text-decoration: none;">chip. Both </del>chips <del style="font-weight: bold; text-decoration: none;">are 8Mbit; the main BIOS is called M_BIOS</del>, <del style="font-weight: bold; text-decoration: none;">the backup BIOS is called B_BIOS. GIGABYTE claims the backup BIOS can not be flashed by the user. It contains code that will overwrite M_BIOS if it determines that M_BIOS is corrupted</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The </ins>board <ins style="font-weight: bold; text-decoration: none;">ships with two </ins>BIOS chips, <ins style="font-weight: bold; text-decoration: none;">see [[Gigabyte_Dual_bios]] for details</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The M_BIOS chip is a [http://www.mct.net/download/macronix/mx25l8005.pdf Macronix MX25L8005].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The M_BIOS chip is a [http://www.mct.net/download/macronix/mx25l8005.pdf Macronix MX25L8005].</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">If you flash coreboot into M_BIOS and something goes wrong, you can force B_BIOS to boot and reflash M_BIOS by bridging pins 4 (GND) and 7 (#HOLD) on the M_BIOS chip, powering up the machine, and then releasing your bridge after a few seconds. The B_BIOS will take over at that point &mdash; you will hear a beep, and see the B_BIOS boot and forcibly re-flash M_BIOS.</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
</table>
Siro
https://www.coreboot.org/index.php?title=Board:gigabyte/ma785gmt&diff=12882&oldid=prev
Phcoder: Phcoder moved page GIGABYTE GA-MA785GMT-UD2H to Board:gigabyte/ma785gmt
2014-01-18T23:21:52Z
<p>Phcoder moved page <a href="/GIGABYTE_GA-MA785GMT-UD2H" class="mw-redirect" title="GIGABYTE GA-MA785GMT-UD2H">GIGABYTE GA-MA785GMT-UD2H</a> to <a href="/Board:gigabyte/ma785gmt" title="Board:gigabyte/ma785gmt">Board:gigabyte/ma785gmt</a></p>
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<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:21, 18 January 2014</td>
</tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div>
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Phcoder
https://www.coreboot.org/index.php?title=Board:gigabyte/ma785gmt&diff=10147&oldid=prev
Uwe at 17:31, 7 November 2010
2010-11-07T17:31:42Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:31, 7 November 2010</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td>
<td colspan="2" class="diff-lineno">Line 1:</td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">This page describes how to use coreboot on the [http://www.gigabyte.com/products/product-page.aspx?pid=3274 GIGABYTE GA-MA785GMT-UD2H] mainboard.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This board exists in 4 versions: v1.0, v1.1, v1.3 and v3.3.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This board exists in 4 versions: v1.0, v1.1, v1.3 and v3.3.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This documentation applies to [http://www.gigabyte.com/products/product-page.aspx?pid=3274 v1.1]. If you have a different version of the board, YMMV.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This documentation applies to [http://www.gigabyte.com/products/product-page.aspx?pid=3274 v1.1]. If you have a different version of the board, YMMV.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>==Dual BIOS==</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== Dual BIOS ==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This board has a dual <del style="font-weight: bold; text-decoration: none;">bios </del>chip. Both chips are 8Mbit; the main <del style="font-weight: bold; text-decoration: none;">bios </del>is called M_BIOS, the backup <del style="font-weight: bold; text-decoration: none;">bios </del>B_BIOS. <del style="font-weight: bold; text-decoration: none;">Gigabyte </del>claims the backup <del style="font-weight: bold; text-decoration: none;">bios </del>can not be flashed by the user. It contains code that will overwrite M_BIOS if it determines that M_BIOS is corrupted.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This board has a dual <ins style="font-weight: bold; text-decoration: none;">BIOS </ins>chip. Both chips are 8Mbit; the main <ins style="font-weight: bold; text-decoration: none;">BIOS </ins>is called M_BIOS, the backup <ins style="font-weight: bold; text-decoration: none;">BIOS is called </ins>B_BIOS. <ins style="font-weight: bold; text-decoration: none;">GIGABYTE </ins>claims the backup <ins style="font-weight: bold; text-decoration: none;">BIOS </ins>can not be flashed by the user. It contains code that will overwrite M_BIOS if it determines that M_BIOS is corrupted.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The M_BIOS chip is a [http://www.mct.net/download/macronix/mx25l8005.pdf Macronix MX25L8005].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The M_BIOS chip is a [http://www.mct.net/download/macronix/mx25l8005.pdf Macronix MX25L8005].</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>If you flash coreboot into M_BIOS and something goes wrong, you can force B_BIOS to boot and reflash M_BIOS by bridging pins 4 (GND) and 7 (#HOLD) on the M_BIOS chip, powering up the machine, and then releasing your bridge after a few seconds. The B_BIOS will take over at that point <del style="font-weight: bold; text-decoration: none;">- </del>you will hear a beep, and see the B_BIOS boot and forcibly re-flash M_BIOS.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>If you flash coreboot into M_BIOS and something goes wrong, you can force B_BIOS to boot and reflash M_BIOS by bridging pins 4 (GND) and 7 (#HOLD) on the M_BIOS chip, powering up the machine, and then releasing your bridge after a few seconds. The B_BIOS will take over at that point <ins style="font-weight: bold; text-decoration: none;">&mdash; </ins>you will hear a beep, and see the B_BIOS boot and forcibly re-flash M_BIOS.</div></td></tr>
</table>
Uwe
https://www.coreboot.org/index.php?title=Board:gigabyte/ma785gmt&diff=9870&oldid=prev
Ward at 20:40, 20 August 2010
2010-08-20T20:40:17Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:40, 20 August 2010</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l9">Line 9:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The M_BIOS chip is a [http://www.mct.net/download/macronix/mx25l8005.pdf Macronix MX25L8005].</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The M_BIOS chip is a [http://www.mct.net/download/macronix/mx25l8005.pdf Macronix MX25L8005].</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>If you flash coreboot into M_BIOS and something goes wrong, you can force B_BIOS to boot and reflash M_BIOS by bridging pins 4 (GND) and 7 (#HOLD) on the M_BIOS chip, powering up the machine, and then releasing your bridge. The B_BIOS will take over at that point - you will hear a beep, and see the B_BIOS boot and forcibly re-flash M_BIOS.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>If you flash coreboot into M_BIOS and something goes wrong, you can force B_BIOS to boot and reflash M_BIOS by bridging pins 4 (GND) and 7 (#HOLD) on the M_BIOS chip, powering up the machine, and then releasing your bridge <ins style="font-weight: bold; text-decoration: none;">after a few seconds</ins>. The B_BIOS will take over at that point - you will hear a beep, and see the B_BIOS boot and forcibly re-flash M_BIOS.</div></td></tr>
</table>
Ward
https://www.coreboot.org/index.php?title=Board:gigabyte/ma785gmt&diff=9869&oldid=prev
Ward at 20:14, 20 August 2010
2010-08-20T20:14:09Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:14, 20 August 2010</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l2">Line 2:</td>
<td colspan="2" class="diff-lineno">Line 2:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This documentation applies to [http://www.gigabyte.com/products/product-page.aspx?pid=3274 v1.1]. If you have a different version of the board, YMMV.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This documentation applies to [http://www.gigabyte.com/products/product-page.aspx?pid=3274 v1.1]. If you have a different version of the board, YMMV.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">==GA-MA785GMT-UD2H==</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Dual BIOS==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Dual BIOS==</div></td></tr>
</table>
Ward
https://www.coreboot.org/index.php?title=Board:gigabyte/ma785gmt&diff=9868&oldid=prev
Ward: Created page with "This board exists in 4 versions: v1.0, v1.1, v1.3 and v3.3. This documentation applies to [http://www.gigabyte.com/products/product-page.aspx?pid=3274 v1.1]. If you have a diffe..."
2010-08-20T20:13:42Z
<p>Created page with "This board exists in 4 versions: v1.0, v1.1, v1.3 and v3.3. This documentation applies to [http://www.gigabyte.com/products/product-page.aspx?pid=3274 v1.1]. If you have a diffe..."</p>
<p><b>New page</b></p><div>This board exists in 4 versions: v1.0, v1.1, v1.3 and v3.3.<br />
<br />
This documentation applies to [http://www.gigabyte.com/products/product-page.aspx?pid=3274 v1.1]. If you have a different version of the board, YMMV.<br />
<br />
==GA-MA785GMT-UD2H==<br />
<br />
==Dual BIOS==<br />
<br />
This board has a dual bios chip. Both chips are 8Mbit; the main bios is called M_BIOS, the backup bios B_BIOS. Gigabyte claims the backup bios can not be flashed by the user. It contains code that will overwrite M_BIOS if it determines that M_BIOS is corrupted.<br />
<br />
The M_BIOS chip is a [http://www.mct.net/download/macronix/mx25l8005.pdf Macronix MX25L8005].<br />
<br />
If you flash coreboot into M_BIOS and something goes wrong, you can force B_BIOS to boot and reflash M_BIOS by bridging pins 4 (GND) and 7 (#HOLD) on the M_BIOS chip, powering up the machine, and then releasing your bridge. The B_BIOS will take over at that point - you will hear a beep, and see the B_BIOS boot and forcibly re-flash M_BIOS.</div>
Ward