jmarsh wrote on 2020-10-07, 23:40:
x86 SBCs are nothing new, there are literally dozens of them around (mostly based on the same crappy z8350). Just don't expect them to be around the same price as a pi (and you're going to need 4gb for win10...).
digger wrote on 2020-10-07, 23:16:
Also, does it have legacy BIOS compatibility (also called CSM)? If it supports booting via UEFI only, you won't be able to run DOS or older Windows versions on it, at least not on bare metal.
"The ROCK Pi X BIOS is based on the AMI(American Megatrends, Inc) AptioV BIOS with UEFI and 64bit OS support, providing a user friendly interfaces
to manage the OS booting/installing and it has a built in UEFI shell, which is convenient for developers to debug."
Source: https://wiki.radxa.com/RockpiX/bios/update
"Aptio® V represents the "next generation" of UEFI BIOS Firmware, featuring support for the latest UEFI specifications and the security,
fast boot and touch support that today's platforms require."
[..]
"AMIBIOS8 was AMI's final legacy BIOS, which served all segments of the computing market: desktop, mobile, server and embedded systems."
Source: https://ami.com/en/products/bios-uefi-firmware/aptio-v/
"Aptio™ Compatibility Support Module (CSM)"
[..]
"CSM FOR SEAMLESS BACKWARD COMPATIBILITY WITH LEGACY BIOS
The Compatibility Support Module (CSM) is designed to extend BIOS
compatibility into UEFI solutions, supporting legacy Option ROM binaries
and operating systems requiring a legacy BIOS runtime interface. AMI
CSM is based on AMIBIOS®8, with validation on multiple platforms
and chipsets. AMI CSM meets the goals established in the Framework:
common compatibility, platform neutrality and common components
across all market segments. This simple design allows the CSM to be
easily integrated into AMI Aptio™ projects.
LEVERAGING THE CSM DESIGN IN APTIO
CSM emerged from the Intel Platform Innovation Framework for EFI
(“the Framework”), predating the UEFI specification. The Framework
architecture breaks CSM functionality into two distinct sections: EFI
Compatibility and CSM16. AMI CSM implements CSM16 as a drop-in
binary component. EFI Compatibility is defined by drivers that implement
“legacy BIOS” interface functions in C code, so platform porting related
to the CSM is performed without using assembly code."
Sources:
https://ami.com/en/resources/resource-library … type=datasheets
https://ami.com/ami_downloads/Aptio_Compatibi … _Data_Sheet.pdf
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