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Integrate VIA VT6421A BIOS module (AMI BIOS) [SOLVED]

Posted: Fri Dec 05, 2008 1:08 pm
by jarlen
I have a Asus P5B-VM with AMI bios.

I'm trying to mod my bios with MMTOOL to integrate a bios for my SATA-PCI-CARD which is biosless (its a VIA VT6421A).

Can i remove the "0E OEM Logo" to make room for my additional "20 PCI Option ROM" module?

The biosfile is 1024kb and it seems that the logo uses 90kb?! The PCI-ROM modules is about 60kb.

If i remove the logo, i can fit in the PCI-ROM. But will this work to boot?
Or should i replace fullscreen logo with some smaller img (thinking an all black 640x480 jpg/bmp/pcx).

Please help me gurus, i dont wanna flash this and have it not booting up because the logo is missing.

Posted: Fri Dec 05, 2008 6:25 pm
by jarlen
For future readers and searchers. This is all thanks to BIOS guru cp!

I removed the "0E OEM Logo" and added in the 6421V431.ROM (available at VIA Arena for VT6421A). It got added as a "20 PCI Option ROM". (Using MMTOOL).

Now i can use my cheap-ass pci-sata/ide-raid card with the features it's supposed to have (RAID 0/1, JBOD).

It also showed up in BIOS under boot order settings and i can now also boot from this controller (which i cursed when i bought it).

I'm glad this worked because the sucky JMicron JMB363 RAID controller on my mobo (Asus P5B-VM) that will only work on the sata ports (one SATA and one eSATA port). It cant create RAID from the drives on the IDE-interface that it controls (wierd huh?).

Posted: Fri Dec 05, 2008 8:57 pm
by RebelsHaven
Could you post a link to that ROM file. I can't find it at VIA Arena. Thanks!

Posted: Fri Dec 05, 2008 9:51 pm
by mcvd

(page is in russian, but you have to click again on the link with the .zip on the page).

Posted: Sat Dec 06, 2008 12:28 am
by RebelsHaven
Thanks, my friend!

The file is a PCI ROM file with vendor ID of 1106h and device ID of 3249h that corrosponds to the card. Neat!

Posted: Sat Dec 06, 2008 5:55 pm
by Denniss
Could this file be used for VIA motherboards using the VT8237 Southbridge? AFAIK this southbridge has the VT6421 SATA-controller integrated.

Posted: Wed Sep 23, 2009 2:51 pm
by babak
Hi , i have same problem but I do not know how add rom file to bios , i read the tutorial for vt6410 but amibcp can't open my bios file.

Please tell me how I'd do it with cbrom ...

MSI P4MAM2-V : http:// www. myttnet .com /bios/W7095VMS.130
VT6421 :http:// www. myttnet .com /bios/via6421.rom
CBROM : http:// www. myttnet .com /bios/CBROM32_195.exe

remove spaces from links !!!


Re: Integrate VIA VT6421A BIOS module (AMI BIOS) [SOLVED]

Posted: Fri Nov 12, 2010 10:27 am
by geri
Thanx for the help.

I have a Asus P5q with an AMI bios, v2208.

I wanted to integrate a module for my PCI sata controller - VIA VT6421A . Added in the 6421V431.ROM to Asus bios with MMTOOL,
(this was listed as a 20 PCI module) and flashed the new file with Asus EZ. My card is now detected correctly during boot. Yeeha !

Re: Integrate VIA VT6421A BIOS module (AMI BIOS) [SOLVED]

Posted: Sun Jan 01, 2012 4:25 pm
by adklv
Please Let you sggest further information because I get many error from MMTOOL It says: the ROM pace is not enough to copy the PCI option rom from 6421A rom

Re: Integrate VIA VT6421A BIOS module (AMI BIOS) [SOLVED]

Posted: Mon Jan 02, 2012 2:32 pm
by edwin
What board is this? make/model? What bios version? What 6421A rom version? What version of MMTOOL?