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coreboot, formerly known as LinuxBIOS, [5] is a software project aimed at replacing proprietary firmware (BIOS or UEFI) found in most computers with a lightweight firmware designed to perform only the minimum number of tasks necessary to load and run a modern 32-bit or 64-bit operating system.
Phenom, [3] Athlon 64, Sempron ? No x16 + x8 SB600 AMD 580X chipset (originally CrossFire Xpress 3200) RD580 Oct 2006 x16 + x16 AMD 690V chipset RS690C Feb 2007 Athlon 64, Sempron 80 1000 (HT 2.0) Radeon X1200 (350MHz) No SB600 DirectX 9.0, AVIVO, HDMI/HDCP, no LVDS: AMD 690G chipset RS690 Phenom, Athlon 64, Sempron Radeon X1250 (400MHz)
Standard PC BIOS is limited to a 16-bit processor mode and 1 MB of addressable memory space, resulting from the design based on the IBM 5150 that used a 16-bit Intel 8088 processor. [8] [34] In comparison, the processor mode in a UEFI environment can be either 32-bit (IA-32, AArch32) or 64-bit (x86-64, Itanium, and AArch64).
The company started as a manufacturer of complete motherboards, positioning itself in the high-end segment. Its first customer was PC's, [4] later known as Dell. [6] As hardware activity moved progressively to Taiwan-based ODMs, [7] AMI continued to develop BIOS firmware for major motherboard manufacturers. [8]
In computing, BIOS (/ ˈ b aɪ ɒ s,-oʊ s /, BY-oss, -ohss; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is a type of firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). [1]
As a point of reference, a PCI-X (133 MHz 64-bit) device and a PCI Express 1.0 device using four lanes (x4) have roughly the same peak single-direction transfer rate of 1064 MB/s. The PCI Express bus has the potential to perform better than the PCI-X bus in cases where multiple devices are transferring data simultaneously, or if communication ...
Under the Hub Architecture, a motherboard would have a two piece chipset consisting of a northbridge chip and a southbridge chip. Over time, the speed of CPUs kept increasing but the bandwidth of the front-side bus (FSB) (connection between the CPU and the motherboard) did not, resulting in a performance bottleneck.
VESA BIOS Extensions (VBE) is a VESA standard, currently at version 3, that defines the interface that can be used by software to access compliant video boards at high resolutions and bit depths. This is opposed to the "traditional" INT 10h BIOS calls, which are limited to resolutions of 640×480 pixels with 16 colour (4-bit) depth or less.
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