PBIOS (PQURE BIOS) is backward compatible with legacy BIOS and can be used with any operating system.

Fast boot

PBIOS is designed to achieve the shortest boot time possible whilst complying with relevant BIOS standards.

When starting up, PBIOS performs the standard POST (Power On Self Test) process and optimized hardware initializations in less than a second. Only a subset of POST processing is executed during a soft reset.

The BIOS disk API supports reliable transfers of up to 255 sectors on any media, reducing the number of calls required to load an image.  


PBIOS complies with the ACPI (Advanced Configuration and Power Interface) 2.0 standard.


PBIOS supports SMBIOS (System Management BIOS) and VBIOS (VGA BIOS) specifications.


PBIOS support of power state C0-C6, makes it capable of optimizing power and performance according to the demands of the system.

USB support

PBIOS supports UHCI, OHCI, EHCI and XHCI host controller standards.

Boot drive emulation

PBIOS is very compact, leaving most of the flash memory space available for a file system. The file system is copied to ram and used as an emulated drive if no other bootable device is present.

We use the drive emulation to integrate our PDOS OS for BIOS management purposes. 

You'll be able to use it for any purpose. You can add custom PDOS applications to our file system, use another OS on our file system or another file system. It's all up to you.

A simple reboot will remove any malware infection as the original file system is fixed in read only memory.



PBIOS setup and core functionality are customized for the platform. Most BIOS options are not part of the setup as these are normally automatically configured by PBIOS at run time.

Core BIOS customization for your product is available on request. You'll also be able to customize by your self as described below.

PBIOS flash image consist of the following distinct parts.

  1. Flash image descriptor (TXE systems only).
  2. Core BIOS.
  3. OEM hooks.
  4. Bootable file system with PDOS, drivers and applications.

On request you'll be able to split the BIOS image into its parts and recombine them again after modification. 

The OEM hooks is an externally binary module that is enabled by us on request. PBIOS will call your selected hooks during POST.

The core BIOS can be used with different products using the same chipset, where the differences are handled by OEM hook code.

With OEM hooks enabled, any problem is within your code and you will be able to fix it without modifying your trusted core BIOS.

The bootable file system image can be mounted as a drive in most operating systems. You can add your custom PDOS drivers and applications.

One option is to replace the file system image part with another OS and/or file system. PBIOS will not mind.


Industri Standard Compliant

  • ACPI 2.0 support.
  • UHCI, OHCI, EHCI and XHCI support.
  • SMBIOS and VBIOS support
  • C-states (C0-C6) support.

Standard feature support

  • Up to 4 IDE channels supporting up to 8 devices.
  • 2 legacy floppy drives (360K, 720K, 1.2M, 1.44M or 2.88M).
  • Emulated floppy drive in flash memory (sizes as above).
  • Emulated drive on optical media (El Torito CD-ROM boot standard).
  • Emulated hard drive on USB, eMMC and SD card.
  • VGA graphics on ISA or PCI bus.
  • Keyboard and/or display emulation on VT100 compatible terminal.
  • Keyboard (PS2 or USB).
  • Mouse (PS2 or USB).

Special features

  • Subsecond boot.
  • Boot drive emulation.
  • Native boot support.
  • Easy user customization.
  • PDOS integrated.
  • BIOS for user hardware customization on request.

Boot devices

  • Flash memory (emulated floppy or hard drive).
  • CDROM (emulated floppy, hard drive or direct boot with no hard drive emulation).
  • DVD or Blueray (same configuration as CDROM).
  • Legacy and USB floppy drive (360K, 720K, 1.2M, 1.44M or 2.88M).
  • ATA and USB hard drive.
  • USB thumb drive.
  • eMMC or SD card.
  • Expansion ROM.




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