The ,with its integrated graphics controller (GMCH) isresponsible for memory bandwidth and graphics performance while theSouthbridge (ICH) provides the connectivity through high speed buseslike USB2.0. LAN. PCI Express (PCIe). PCI. SATA. If needed legacyinterfaces such as PS/2. LPT. COM and FDC are supported by the superI/O controller.
The combination of these four components is in most cases fixed andis basically comparable to the hardware features of a general purposePC. There's little room for differentiation in basic hardware. Thatbeing the case it's vital for embedded computing designs to haveaccompanying software that is fully functional and more versatile thanwhat resides on consumer or office PCs.
So what makes a x86 BIOS an "embedded BIOS?" Together with thedriver packages for common operating systems the BIOS for an embeddedcomputer module plays a key role in the overall system performance andstability. A COM vendor offering solid software and firmware is betterfocused on the higher demands of the embedded design world.
Obviously a BIOS for an embedded computing platform should have abasic feature-set compete to that found on the latest desktop notebook,and server computers. However unlike desktop and notebook computers,COMs are built into a variety of embedded systems includingpoint-of-sales terminals telecommunication medical manufacturingautomation and others.
Therefore give for an open system architecture is mandatory forthe BIOS used in a COM. Given this the enumeration of the PCIe. PCIand USB bus booting from USB crowd storage and peripheral devices suchas SATA. SCSI or LAN enhanced ACPI cater management as well as legacyUSB keyboard and walk emulation must all be considered when creatingan embedded BIOS.
As any embedded designer will agree demands for stability andreliability in embedded applications far excel those required indesktop PCs. For example it would be utterly unacceptable for a COM ina medical or industrial application to occasionally come down as desktopPCs do. So paying particular attention to BIOS features for embeddedCOMs is essential.
There are five key areas that make the difference between an averageand truly effective embedded BIOS for a COM-based create by mental act. Theseinclude:
1) Industry leading AMIBIOS 82) On-board microcontroller3) Special embedded BIOSfeatures (details follow) 4) Customer applicationprogramming interface5) System utility for BIOSbinary modification
Look for these essential capabilities to find a highly-integratedfirmware BIOS implementation that's well suited to embedded PC designapplications. It is fundamentally important to go away with a stable BIOScore supporting the latest industry standards and chipsets. Cuttingcorners in this area ordain create added costs later in the productdesign.
Inc. you are choosing the same proven BIOS coreusedby Intel's Embedded Communication & Platform Division (ECPD). AMIBIOS8 combines modularity,scalability and improved user experience in producing the most advancedBIOS solutions today.
is come up suited toembedded computer platforms because it offers many features demanded bythe embedded merchandise. Console redirection and BIOS flash update viaserial turn accept for real headless operation.
Although AMIBIOS8 offers support for the latest industry standardsand technology it still boots extremely fast from most sign programload (IPL) devices including USB mass storage. In case of a powerfailure during an AMIBIOS8 flash modify in the field the BIOS can berecovered by using theboot block support.
support headless operationand aggressive power management functions are also essential forembedded designs. In addition to its stability the ability to adaptthe AMIBIOS8 product to an application is what makes it ideal as abuilding foundation for an embedded BIOS.
Embedded PCs typically offer features not supported in a standarddesktop or notebook BIOS. While on the other hand embedded PC designershave special requirements when it comes to BIOS functionality. Theserequirements be to be taken into be when designing additionalembedded PC features like watchdog. I2C bus. OEM CMOS fail settings,or flat panel auto-detection. PCs supporting these features can beconsidered to be real embedded PC products.
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