Search found 18 matches

by gabiz_ro
Wed Aug 31, 2011 7:58 pm
Forum: Notebook BIOS and other problems
Topic: BIOS not recognizing 4GB
Replies: 13
Views: 7603

Re: BIOS not recognizing 4GB

Intel 945 chipset support max 4GB of RAM but usable are less sometime,depends of system manufacturer ~3.25GB usable
From 3.25GB to 4GB are system resources.
by gabiz_ro
Fri Dec 17, 2010 8:53 pm
Forum: Notebook BIOS and other problems
Topic: Compaq Presario 2190US slow boot + garbled BIOS setup info
Replies: 6
Views: 1721

Re: Compaq Presario 2190US slow boot + garbled BIOS setup in

Most batteries are so called smart battery.
Communication is done through SMBUS.
In event of defective one that must somehow to short circuit smbus signals or garbled communications.
by gabiz_ro
Wed Sep 15, 2010 12:06 am
Forum: My hard drive isn't recognized
Topic: Option ROM loaded but no boot device
Replies: 7
Views: 11843

Re: Option ROM loaded but no boot device

Almost done. Still BIOS can't boot native from disks. Main problem was: -BIOS doesn't make a call to BCV (after initialization OROM resize itself but also clear any configuration,that is make so when calling BCV, OROM get his disk BIOS assigned number. -trying to make later a far call to this BCV sh...
by gabiz_ro
Sun Aug 22, 2010 6:37 pm
Forum: My hard drive isn't recognized
Topic: Option ROM loaded but no boot device
Replies: 7
Views: 11843

Re: Option ROM loaded but no boot device

According to what I read in PnPBIOS datasheet BIOS must make a FAR CALL to a location pointed by PnP header. BIOS will pass the following parameters when calling the Boot Connection Vector. AX 04h (which vector to hook,in may case INT13) ES:DI Pointer to System BIOS PnP Instalation check structure B...
by gabiz_ro
Sat Aug 21, 2010 4:11 am
Forum: My hard drive isn't recognized
Topic: Option ROM loaded but no boot device
Replies: 7
Views: 11843

Re: Option ROM loaded but no boot device

After more testing and comparing between two cases on Intel and Dell I see some differences somewhere after PCI data structure into initialized option ROM In Intel case Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F 00000040 50 43 49 52 95 10 32 31 00 00 18 00 00 00 04 01 PCIR•.21........ 00000050 6C 00 01 ...
by gabiz_ro
Sun Aug 15, 2010 11:21 pm
Forum: My hard drive isn't recognized
Topic: Option ROM loaded but no boot device
Replies: 7
Views: 11843

Re: Option ROM loaded but no boot device

I have a similar card into one Intel D945GCL On both card is in same PCIe port,under 8086:27D6 Comparing RAM dumps from both I see OROM is the same after loading (after initialization). On both cases,Dell and Intel I have this (but in other range address on Intel 2ED0h-300Fh ) And using same HDD Thi...
by gabiz_ro
Sun Aug 01, 2010 4:47 pm
Forum: My hard drive isn't recognized
Topic: Option ROM loaded but no boot device
Replies: 7
Views: 11843

Re: Option ROM loaded but no boot device

Thanks for answering. I don't disassembled it because is beyond my knowledge. I have read PnP BIOS Boot Specifications but is not clear when Boot Connection Vector is used.Making a FAR CALL to addres pointed by BCV is done at Option ROM initialization or at moment when BIOS try to boot from device? ...
by gabiz_ro
Fri Jul 30, 2010 11:05 am
Forum: My hard drive isn't recognized
Topic: Option ROM loaded but no boot device
Replies: 7
Views: 11843

Re: Option ROM loaded but no boot device

I found this on lower RAM area in Option ROM shadowed in RAM Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F 00000000 24 50 6E 50 01 02 00 00 00 94 95 10 32 31 06 00 $PnP.....”•.21.. 00000010 EA 15 01 01 80 E4 91 33 00 00 00 00 00 00 00 00 ê...€ä‘3........ 00000020 24 50 6E 50 01 02 00 00 00 5C 95 10 32 31 0...
by gabiz_ro
Fri Jul 30, 2010 2:28 am
Forum: My hard drive isn't recognized
Topic: Option ROM loaded but no boot device
Replies: 7
Views: 11843

Option ROM loaded but no boot device

As far as I read expresscard port is just one PCI express slot with removable capabilities. So I take one 2x sata expresscard based on SIL3132, offcourse was just a simple card,just SIL3132 controller. Search in my junkyard for a flash and found one of 256k solder it to PCB and program with SIL BIOS...
by gabiz_ro
Sun Apr 04, 2010 9:26 am
Forum: Notebook BIOS and other problems
Topic: how to extract content of Dell exe bios file
Replies: 5
Views: 34208

Re: how to extract content of Dell exe bios file

seems I can't reproduce positive result,same make rom error now everytime. but believe me once worked. http://www.4shared.com/file/256568199/6 ... 5_A08.html here is uploaded rom when /writeromfile was working for me,try it.
by gabiz_ro
Fri Apr 02, 2010 1:31 am
Forum: Notebook BIOS and other problems
Topic: how to extract content of Dell exe bios file
Replies: 5
Views: 34208

Re: how to extract content of Dell exe bios file

tested and works.
use /writeromfile
pay attention is not like older -writeromfile.
1555_A08.exe /writeromfile
After that you have 1555_A08.ROM in same folder.
by gabiz_ro
Wed Mar 03, 2010 5:11 am
Forum: My hard drive isn't recognized
Topic: Dell Inspiron AHCI can't detect hdd
Replies: 2
Views: 10320

Dell Inspiron AHCI can't detect hdd

I've managed to build a custom pci option rom for my Dell inspiron 9400 to switch ICH7 controler from compatible to sata ahci mode. PCI registers looks ok but at boot time bios report my hdd as is was detected in legacy mode and now controller is switched to ahci so all programs can't access my hdd....
by gabiz_ro
Wed Feb 10, 2010 5:06 am
Forum: In-depth High-tech BIOS section
Topic: One guru of bioses take a look at this
Replies: 1
Views: 1432

One guru of bioses take a look at this

I really need some help with this,
Main request is to enable ahci and adding hpet function.
Chipset is I945PM - 82801GHM ICH7-M
Decompressed bios modules is here Uncompressed
by gabiz_ro
Fri Feb 05, 2010 8:35 pm
Forum: BIOS Utilities & Flash Programs
Topic: delldeco
Replies: 10
Views: 5889

Re: delldeco

Good news on mydigitallife split and unpack,repack modules.
by gabiz_ro
Sat Dec 12, 2009 6:54 am
Forum: Notebook BIOS and other problems
Topic: Dell bios
Replies: 1
Views: 2065

Dell bios

Is there anybody with knowledge in intel 8051? Some dell notebook family use a embedded controller based on 8051 cpu. I don't know anything about software and reverse engineering but maybe some others can decipher what firmware inside controller do with hardware and with bios rom (which is somehow e...