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Top HAT an alternative to Dual Bios.
editI have top hat and was looking for some info. None here though.
Anyone know of this subject please give us your two cents. http://www.wimsbios.com/phpBB2/viewtopic.php?t=7385&
IBMBIO.COM
editWhen I click on the link "IBMBIO.COM", I get this:
- High security alert!!!
- You are not permitted to download the file "IBMBIO.COM".
- URL = http://en.wikipedia.org/wiki/IBMBIO.COM
Eh?
- why would you need that? http://www.freedos.org
UEFI
editSee UEFI. It says A common misconception is that UEFI is a replacement for BIOS and explains that UEFI-based motherboards come with BIOS ROMs. I saw elsewhere a page in the Intel website stating that a UEFI is an interface between the operating system and the system firmware and I am nearly certain that firmware is the BIOS, but I closed that page. Sam Tomato (talk) 02:47, 4 February 2022 (UTC)
Okay, see Unified Extensible Firmware Interface. It says the UEFI defines an interface between an operating system and platform firmware. There are many possible references saying that firmware is BIOS. Sam Tomato (talk) 02:51, 4 February 2022 (UTC)
The Alternatives and successors section says that Intel announced that it would remove legacy BIOS support without any authority for that. I have provided an authority from them indicating that systems still have BIOSs. Sam Tomato (talk) 03:34, 4 February 2022 (UTC)
That osdev.org article uses dodgy terminoloy. See Barlop's answer here that mentions that article. https://superuser.com/questions/1450261/does-uefi-run-on-top-of-bios — Preceding unsigned comment added by 86.1.49.43 (talk) 03:57, 21 September 2023 (UTC)
- I've added a reference for Intel's announcement that they will end legacy BIOS support by 2020. Guy Harris (talk) 06:48, 6 September 2024 (UTC)
It says the UEFI defines an interface between an operating system and platform firmware
In that context, "the UEFI" doesn't refer to the UEFI firmware installed on the machine, it refers to the interface (programming interface, etc.) between the software using platform firmware services and the platform firmware. There are several implementations of UEFI firmware, just as there are several implementations of BIOS firmware.There are many possible references saying that firmware is BIOS.
Any reference that says that firmware, in the general sense, or even in the boot-firmware sense, is BIOS, in the PC-specific sense, is wrong. Plenty of machines have boot firmware that isn't compatible with a BIOS; EFI was originally developed for Itanium-based systems, for example, and both later PowerPC-based Macs and later SPARC machines from Sun used Open Firmware. Guy Harris (talk) 07:08, 6 September 2024 (UTC)
BIOS reverse engineering
edit"The BIOS originally proprietary to the IBM PC has been reverse engineered by some companies (such as Phoenix Technologies) looking to create compatible systems."
There is a complete assembly listing of the original IBM PC/AT BIOS in IBM's PC/AT Technical Reference Manual. This means that no reverse engineering was required. 106.69.154.248 (talk) 23:02, 30 January 2024 (UTC)