Living dangerously with Nick's untested patch

Only for programmers and BIOS gurus with technical questions.
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bmholland
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Posts: 4
Joined: Sun May 04, 2003 8:09 am

So, you can patch Epox VP3 128 Kb BIOS: EP-58MVP3C-M, EP-51MVP3E-M, EP-51MVP3F-A, EP-58VP3A
EP-5BVP3A, P55-VP3
But, can you patch same way: Epox 100a9910.bin 128 KB (For 1MB BIOS EEPROM)
P2-100A, P2-100B, P2-100B2, P2-100Y, EP-V370B

For Apollo Pro AGP/PCIset
Chipset: VIA 82C691 rev 1
Superio: Winbond 877TF (use 87h) rev 0 found at port 3F0h
CPU: 0650/0652
String: 09/10/1999-691-586B-W877-2A6LFPA9C
Carefull not to loose "CPU Host Clock" there are no jumpers onboard for FSB
I'll flash it to backup chip and test the hell out of it.

bmholland@comcast.net :D
NickS
BIOS Bodhisattva
Posts: 3145
Joined: Fri May 03, 2002 10:34 am
Location: Thames Valley, UK

I didn't find that BIOS at http://www.epox.com.nl
For Epox EP-V370A/B I found the 2Mbit image. Can you give me a link

[edit]OK, found at http://www.epox.com, the US site.
NickS
BIOS Bodhisattva
Posts: 3145
Joined: Fri May 03, 2002 10:34 am
Location: Thames Valley, UK

Yes, it seems that is patchable. Is this really a "My hard disk isn't recognised" issue ?
bmholland
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Joined: Sun May 04, 2003 8:09 am

Yes.
System will hang on post, after memory test, during device detection, with Hard Drive greater than 34GB installed. System cannot detect the drive.
Other issue is limit UDMA ATA33.

Note:
Maxtor ships software with drive which will detect the drive. User then has 2-options:
1. Configure drive limit jumber which reports 32GB drive and limits drive to that capacity.
2. Load drive overlay software (EZ Bios) which reports 32GB and places special partition table on track 1 sector 63 allowing access to full drive capacity. Of course this software causes many problems. Maxtor recomends buing thier PIO card with onboard bios and reroute IDE drives through PCI Bus and claims to allow access to full RPM and ATA 66/100. I have not tried this type of card. Do you have any experience with them.

bmholland@comcast.net
NickS
BIOS Bodhisattva
Posts: 3145
Joined: Fri May 03, 2002 10:34 am
Location: Thames Valley, UK

I have no personal experience of the add-on cards, though some speak highly of them. A patched BIOS is at the link in my sig if you wish to try, but doesn't fix any UDMA recognition problem, though you should be able to get a mode setting utility from Maxtor to do that.
Tested patched BIOSes. Untested patched BIOSes.
Emails *will* be ignored unless the subject line starts "Wim's BIOS forum"
bmholland
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Posts: 4
Joined: Sun May 04, 2003 8:09 am

OK Nick. I'll Flash it to Backup Chip and Fire it UP

bmholland :twisted:
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