PPC7A Product Manual
General Description
2-9
1
st
Edition
VxWorks/Tornado
Wind River Systems’ VxWorks/Tornado distributed real-time operating system includes integrated
networking facilities and a complete software development environment for UNIX hosts. It features a
fast, multitasking kernel with pre-emptive scheduling, inter-task communications, multiprocessor
support, symbolic and source-level debugging, performance monitoring and an I/O file system.
The full range of facilities are supported by BSPs for all Radstone CPU types, which have been validated
by both Radstone and Wind River for the greatest confidence and ease of use. To complement the BSPs,
many of Radstone’s I/O and graphics products are also supported by libraries and drivers.
LynxOS
Created by LynuxWorks, LynxOS is compatible with UNIX V.3. It is POSIX compliant and supports
X.11 (X-Windows), Motif, NFS and TCP/IP. Unlike conventional UNIX, it is fully pre-emptive to
ensure that application tasks can be rescheduled if a higher priority task is ready.
BSPs and ESPs
Board Support Packages provide ‘standard’ support for the above operating systems, as defined by the
operating system vendors. Radstone also provide Enhanced Support Packages for comprehensive
hardware support in addition to that defined by the operating system vendors. This approach allows
users to implement a verifiable BSP standard and yet not be locked out of using valuable extra features,
which will adapt the BSP but shorten development times. ESP features may be added or removed as
desired during development.
Typical features include VME DMA for VxWorks (not included in WindRiver’s BSP definition) and
VME enhancements like dynamic windowing and interrupt generation for LynxOS (not included in
LynuxWorks’ BSP definition. BCS is also part of the ESP.
Build Styles
The PPC7A is available in five electrically compatible build styles. These have two basic mechanical
configurations: convection-cooled in accordance with ANSI/VITA 1-1994 spec., and conduction-cooled
in accordance with IEEE Std 1101.2-1992.
Convection-cooled boards include:
•
Level 1
•
Level 2
•
Level 3
Conduction-cooled boards include:
•
Level 4
•
Level 5
A brief description of each build style follows:
Level 1
Intended for use in benign environments, Level 1 also provides the ideal cost effective method of
omplete system development. The Level 1 assembly comprises a double-Eurocard size printed wiring
board with high quality commercial (plastic encapsulated) components. As software compatibility
throughout the build styles is absolute, a system intended for final implementation in a severe tactical
environment can be developed and debugged at low cost, switching over to target style only in the final
stages of system integration.
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