LynxOS RTOS 5.0 Feature List The world's most powerful, open-standards embedded RTOS

In addition to the features listed here, LynxOS® supports 324 RFCs.

1. LynxOS RTOS: the RTOS
2. Linux compatibility and POSIX conformance
3. Choice of development environments and tools
4. Real-time network and enhanced TCP/IP stack
5. MMU support
6. >>LynxOS 5.0 features

• LynxOS RTOS PDF brochure (271 kB)
• Understand POSIX Process-Based Operating Systems vs. Partitioning Operating Systems

Enhanced LynxOS features in version 5.0

• Increased RAM support—up to 2 GB
• Symmetric MultiProcessing (SMP)
• New GNU toolchain—based on gcc 3.4.3 and GDB 6.5
• ELF file format
• Ada support
• New POSIX—POSIX 1003.1-2003 PSE 53/54
• Updated Linux Application Binary Interface (ABI) compatibility—Linux 2.6-based
• USB 2.0
• NFS v2 support
• Serial ATA support

Kernel features

• Hard real-time determinism
• Multitasking and multithreaded RTOS
• Unlimited number of tasks
• Extensive support for multi-threaded application
• Complete MMU-based protected address spaces for tasks
• Page-level memory mapping for efficient memory management
• 256 priority levels
• Priority inheritance semaphore support
• Kernel threads and priority tracking support (LynuxWorks patented)
• Four scheduling policies (FIFO, Priority Quantum, Round-Robin, Non-preemptive)
• Deterministic context switching through real-time scheduling
• Low interrupt and task response times through efficient interrupt handling
• Demand-paged virtual memory support
• Comprehensive inter-task communication facilities
  • Message queues, semaphores, shared memory, sockets, signals, pipes, mutexes, condition variables (POSIX®)
• Comprehensive POSIX API conformance: POSIX 1003.1-2003 PSE 53/54
• MMAP support for regular files and shared memory
• Extremely fast boot times
• Configurable tick timer resolution
• Configurable time quantum for priority levels
• Dynamic loading of device driver modules
• MIB style visibility into kernel variables
• Efficient floating-point context management
• Support for static and dynamically linked libraries
• ELF file format support for all user applications
• SVR4-style ELF shared library support
• Modular design for flexible footprint management
• Kernel downloadable image (KDI) for diskless environments (LynuxWorks patented)
• POSIX real-time timer and clock support
• Kernel crash analysis
• Kernel level event logging of system events
• Up to 2GB of system-managed RAM
• Debug version of kernel for profiling and watchpoint support
• Dynamic device drivers

Networking support

• Full state-of-the-art TCP/IP stack derived from FreeBSD 4.11 and enhanced for reentrancy, determinism and performance
• IPv4 and IPv6 support
• IPSec/IKE/VPN
• Quality of Service (QoS)
• Protocols: TCP, UDP, ICMP, IGMP, ARP, RARP, DHCP, NAT, RPC, NTPv3
• Divert Sockets, PF Packet, Raw Ethernet support
• Routing Protocols: RIP, RIPv2
• Network Booting
  • PXE Netboot, TFTP boot
• Network Security
  • Secure DNS dynamic update
  • IPSEC AH, IPSEC ESP
  • PPP Password Authentication, PPP Challenge Handshake AP
  • Firewall support: ipfw, ip6fw
• Network Management
  • SNMP v1, v2 and v3
  • BIND: dns services, named
• Network Device Support
  • Gigabit Ethernet
  • 100baseT interfaces
• Network Daemons
  • IPv4: inetd, routed, rlogind, telnetd, dhcpd, tftpd, etc.
  • IPv6: faithd, pim6sd, pim6dd, rtsold, route6d, etc.

Linux application support

• Linux application binary interface (ABI) personality
• Linux binaries run unchanged
• Compatible with Linux v2.6 and glibc v2.3.3
• Debugger support for Linux binaries

File system support

• Lynx Fast File system
• Network File System (NFS)
• RAM disk file system

I/O device support

• IDE and EIDE with DMA support
• SCSI support: Adaptec 19160, 29160, 29160N; Symbios 53c895/896
• Flash support: M-systems TrueFFS, Flash interface chips
• PCMCIA support
• UART, PTY (pseudo TTY support)
• DRM device abstraction layer for portability of drivers
• USB 2.0
• Serial ATA

Libraries and utilities

• Over 100 libraries and over 2500 utility routines

Development environment

• Multiple interactive shells: bash, csh, ash, dlsh
• Cross Development: Windows XP/Pro, Linux RH Enterprise 4
• GNU tool chain: GCC, G++ 3.4.3, and GDB 6.5
• Ada support
• Full support for multithreaded ANSI C development
• Full support for multithreaded C++ development
• Static, dynamic, multithreaded versions of system libraries
• ELF Dynamic linking loader
• C/C++ language Altivec support
• Symbolic debugging of multithreaded and Altivec applications
• Watchpoint support for application and kernel debuggers
• Configurable core file support
  • Selective core file contents (Stack plus data, BSS, heap, and/or shared memory)
  • Post-mortem debugging of configurable core files
• X11R6, Motif, PosixDesk product support
• Full suite of tools

Architecture support and reference boards

• Visit our board-support area for the latest updates

Custom board support

• Modular architecture for rapid OS porting
• Improved Porting Guide documentation
• Boot loader support for firmware-less configurations
• Pre-configured "Demo" KDIs (Kernel Downloadable Image)
• Reference library of device drivers for porting ease