BIOS Updates forum

Anyone looking for a fast embedded BIOS/Firmware that runs the Linux Kernel from a 1MB BIOS, then please check out www.aexorsystems.com. I checked out their demo too, and its really cool. Instead of booting to a BIOS setup menu, you can boot into Linux and control everything from there.

The very first instruction at the CPUs reset vector is a jump instruction that points to some real code. My suspicion is that when you are modifying the original file that jump instruction is not lining up or not being placed at the reset vector. I can't remember for sure, but the opcode on x86 for ...

The above statement is correct and the checksum is stored in 2e,2f, and 3e, 3f for non-EFI BIOS. EFI based BIOS store everything to flash. So to help you, you need to understand the checksum method your BIOS uses and which locations are used to compute the checksum. This can vary from one BIOS to an...

you should be okay in leaving it alone unless you are using a PCI (not PCIExpress) card. With PCI with internal and external graphics are typically enabled.

With PCIExpress or AGP, the video gets a dedicated controller and all chipsets will disable the internal graphics.

what is the info on your northbridge? What kind is it? Might be able to help you find the register.

Also, does your board have an AGP/PCIExpress Video slot?

with PCI, the bios will enable both internal and external graphics, leaving the internal as secondary.

That is correct. Look for that BIOS option. I know that Intel chipsets support this feature (since like 1999) and it is up to the BIOS vendor ro implement it. What is the chipset you are using? Motherboard?