Green Hills Software Announces Additional High Assurance Software Components for Its Certified and Field-Proven

SAN DIEGO, CA, Jun 01 (MARKET WIRE) --
AVIONICS USA, Booth 507 -- Green Hills Software, Inc., the world leader
in safe and secure operating systems, today announced the availability of
three new high assurance software components for its INTEGRITY(R)-178B
real-time operating system (RTOS): an RTCA/DO-178B Level A-compliant
Partitioning Journaling File System called PJFS-178B, an RTCA/DO-178B
Level A-compliant network stack, called IPFLITE, and an ARINC 615A
dataloader.

The Journaling File System provides multiple INTEGRITY-178B partitions
with concurrent power-fail safe access to an underlying file system.
IPFLITE's client/server architecture allows multiple applications to
access the underlying network stack that resides in a virtual
INTEGRITY-178B partition. PJFS-178B, IPFLITE and the ARINC 615A
dataloader are available as optional components for Green Hills
Software's industry-leading INTEGRITY-178B operating system.

With the introduction of these additional high assurance components for
INTEGRITY-178B, Green Hills Software continues to widen its lead over the
second tier RTOS suppliers. This announcement also follows the U.S.
Government's recent announcement that INTEGRITY-178B has been certified to
the highest security assurance level required by the U.S. Government for
operating systems -- EAL6+/High Robustness. This EAL6+ certification is
the first of its kind, the highest Common Criteria security level ever
achieved for an operating system. Only an EAL6+ High Robustness operating
system is certified to protect classified information and other high
value resources from attack by hostile and well-funded attackers. This is
secure by anyone's definition. The highest security standard to which any
other operating system is certified only protects against "inadvertent or
casual attempts to breach the system security." That is not even close to
secure by anyone's definition.

With the new PJFS-178B file system, IPFLITE network stack and ARINC 615A
dataloader, Green Hills Software now offers system developers and
integrators a single-source solution for their high assurance operating
system and related software components without relying on third party
software products or certification services. In contrast, alternative RTOS
products, unable to offer a single-source high assurance operating system
solution, can only suggest that a customer's required DO-178B Level
A-compliant software components be obtained from their "partner
ecosystem." The facts are simple. A single-source solution from an RTOS
vendor, such as Green Hills Software, that does not rely on third party
products or certification services significantly reduces risk over a
"partner ecosystem" solution. RTOS vendors recommending a file system
from a third party supplier, cannot adequately assure the successful
integration and certification of all components on the customer's flight
hardware, nor can they guarantee the correct operation and intended
behavior of the separately acquired components throughout the life cycle
of the customer's airborne equipment.

Industry Perspective

As the first commercial, partitioned operating system to be certified to
the FAA's and EASA's highest safety-critical level (RTCA/DO-178B Level A)
back in 2002, Green Hills Software has reliably continued to evolve its
INTEGRITY-178B technology by delivering a DO-178B Level A-compliant RTOS
for twenty-five different microprocessors, more than all other major RTOS
suppliers combined. Green Hills Software has continued to meet customer's
critical deadlines reliably by providing them with a true DO-178B Level
A-compliant RTOS that is ready to run on custom flight hardware with
hardware specific certification evidence that the customer can take full
credit for, right out of the box. Other RTOS vendors, claiming for years
their ability to provide "certifiable" partitioned operating systems, have
failed to deliver their end product.

Driven by the increasing demand for software suppliers to comply with
government and industry-accepted safety and information assurance
standards, other RTOS suppliers are constantly announcing new and
different high assurance operating systems, whereas Green Hills Software
has continued to maintain and improve its hallmark operating system
technology that was first delivered in 1997. This approach has proven to
strengthen the Green Hills Software 12-year pedigree of its safe and
secure operating system technology for the high assurance computing
marketplace.

About PJFS-178B

The PJFS-178B Client provides a standards-based interface that allows a
safety- or security-critical application to access the underlying file
system. The PJFS-178B Server handles PJFS-178B Client API requests,
manages access to the underlying storage device(s), and provides
interfaces to configure the file system as well as format and mount
disks. The PJFS-178B Server operates in one partition and communicates
with one or more PJFS-178B Clients. The PJFS-178B Client and PJFS-178B
Server can reside in the kernel or any virtual partition. The combined
strength and sophistication of INTEGRITY-178B and PJFS-178B allows the
DO-178B Level A-compliant host PJFS-178B file system to service multiple
file system clients at different safety levels in an ARINC 653
environment.

Additional Options for PJFS-178B

-- Support for the ARINC 653 Part 2 File System Interface
This specification was developed by an ARINC-sponsored committee consisting
of avionic equipment vendors and operating system suppliers. The
specification defines a general-purpose file system interface that provides
support for file and directory services.

-- Wear-Leveling Flash
The DO-178B Level A-compliant Wear-Leveling Flash (WLF) device is an
INTEGRITY-178B device that provides an interface to a physical hardware
storage device used to preserve data in a non-volatile storage medium. The
WLF architecture provides user access to sectors of flash memory without
requiring any knowledge of the physical layout of flash memory. It reduces
the wear on individual physical flash blocks by distributing writes to
flash memory across all available flash blocks. The WLF includes bad block
management and supports both NAND and NOR flash devices.

-- PJFS-178B can interface with the underlying storage device RAM disk or
an I/O device.

About IPFLITE

The IPFLITE Client/Server architecture is based on RFC 791 and 768. The
IPFLITE Client provides a BSD-style interface that can be used to access
IPFLITE's network services. The IPFLITE Server includes a Socket Server
and an UDP/IP network stack. IPFLITE also contains a Trivial File Transfer
Protocol (TFTP) library that is based on RFC 1350, 2347, and 2348, and is
compatible with both the IPFLITE network stack and the PJFS-178B file
system.

About the Green Hills ARINC 615A Dataloader

Green Hills Software's dataloader protocol (DLP) library implements the
protocols specified in ARINC 615A-2 used to perform uploads and downloads
of data files. ARINC 615A-2 is an industry standard based on TFTP and is
widely used in avionics systems. The DLP library provides the target side
for interfacing to host-based ARINC 615A-2 dataloaders such as TechSat's
NetLoader as well as other host-based systems.

INTEGRITY: Proven, Deployed Technology

The INTEGRITY operating system includes a service history dating back to
1997, when it was first adopted by critical U.S. defense systems and
commercial avionics that required absolute security and total reliability.

-- Designed into dozens of aircraft including Boeing's 787, C-17, B-1B, B-
52; Airbus' A380 and A400M; Lockheed Martin's F-16, F-22, F-35, C-130J, P-3
and Orion Crew Exploration Vehicle; Sikorsky's S-92; Northrop Grumman's B-
2;
-- Secured military and intelligence computers, network routers, mobile
devices, and radios;
-- Received widespread adoption in medical, industrial control,
automotive, and telecommunications.

The Ultimate Open Platform

With its open standards, POSIX-conformant interface, and ability to host
arbitrary general purpose operating systems in virtual machines, such as
Windows and Linux, INTEGRITY can run more application software than any
other operating platform, while maintaining the absolute highest level of
security for critical components, algorithms, applications, and
subsystems. INTEGRITY enables solutions to many of the world's
long-standing computer security problems, including safe Internet
browsing on corporate PCs; protection of critical enterprise servers;
unhackable digital rights management (DRM); and multi-level security for
government laptops, desktops, PDAs, and servers.

About Green Hills Software

Founded in 1982, Green Hills Software, Inc. is the technology leader in
device software optimization (DSO) and real-time operating systems (RTOS)
for 32- and 64-bit embedded systems. In 2008, the Green Hills
INTEGRITY-178B RTOS was the first and only operating system to be
certified by the NSA to EAL6+ High Robustness, the highest level of
security ever achieved. Our INTEGRITY(R) and velOSity(TM) real-time
operating systems, u-velOSity(TM) microkernel, compilers, IPv6-ready
TCP/IP networking stacks, GateD(R) Layer 2 switching and Layer 3 routing,
MULTI(R) and AdaMULTI(TM) integrated development environments,
DoubleCheck(TM) integrated static analyzer and TimeMachine(TM) tool suite
offer a complete development solution that addresses both deeply embedded
and high-reliability applications. Green Hills Software is headquartered
in Santa Barbara, CA, with European headquarters in the United Kingdom.
Visit Green Hills Software at www.ghs.com.

Green Hills, the Green Hills logo, MULTI, INTEGRITY, velOSity, u-velOSity,
AdaMULTI, DoubleCheck and TimeMachine are trademarks or registered
trademarks of Green Hills Software, Inc. in the U.S. and/or
internationally. All other trademarks are the property of their respective
owners.

Contact:
Green Hills Software, Inc.
Barbel French
805-965-6044
bfrench@ghs.com

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