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| About site: Software/Operating Systems/Realtime - JMI Software Systems, Inc. |
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| About site: http://www.jmi.com/ |
Title: Software/Operating Systems/Realtime - JMI Software Systems, Inc. Makes C EXECUTIVE and PSX multitasking, ROMable kernels for embedded systems. C EXECUTIVE runs on 8/16/32 bit CISC CPUs, many RISC CPUs, DSPs, over 20 so far: fast context switching, compact. Options:
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This is websites2007.org cache of m/ as retrieved on 2008.10.10 websites2007.org's cache is the snapshot that we took of the page as we crawled the web. The page may have changed since that time.
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JMI SOFTWARE SYSTEMS, INC. HOME PAGE
The Software Products of
JMI SOFTWARE SYSTEMS, INC.
Looking for "Real-time Linux"? See JMI's
PSX.
C EXECUTIVE® and PSXtm Real-time
Kernels (RTOS)
C EXECUTIVE is a real-time,
multi-tasking, ROMable kernel for embedded systems,
and is available for 8-, 16- and 32-bit CISC processors, a wide variety
of RISC processors, and DSP. It provides fast context switching, small
kernel size, and support for over 20 processors. Optional DOS-compatible file system , TCP/IP , and SNMP
are available. PSX provides an optional
subset of POSIX.1 system calls.
PSX versus Linux
PSX provides a single-user, single-group subset of
POSIX.1 system calls, and is about ONE TENTH the size of Linux, not to
mention the much smaller interrupt latency. PSX does not have the
overhead of fork/exec, MMU management and
multi-user capability. Up to 32,000 processes and POSIX threads can be
created. PSX is based on the C EXECUTIVE real-time kernel.
If a Linux-like resident and a DOS-compatible file
system meet your needs, PSX may be the
solution.
Scalability
Both C EXECUTIVE and PSX are inherently scalable,
since the system calls are linked in from a
library during a system build. Only those system calls
which are used by the application are linked
into the system executable image. In addition, the
kernel can be configured with or without timeslicing, clock support, signals, etc., allowing a highly optimized
system configuration for small target systems.
Designing a System with C EXECUTIVE and PSX
JMI Software Systems is a strong proponent of data flow
design. Please reference a description of our system
design method.
i960 Reverse State Use - an example of optimization
JMI Software Systems is also a strong proponent of
portable, reusable code (read "reliable"). JMI also pays special
attention to optimizing the assembly language portions of our kernels,
especially interrupt handling and context switching. Please see a
description of JMI's Reverse State Use invention.
Customer Applications
JMI's real-time kernels are used in hundreds of embedded applications , including laser
printers, electronic cash registers, medical instruments, communication
devices, military and aerospace applications
, and many other time critical systems. Pictures
and descriptions of some customers' products are available in our
product photo gallery.
Example Customer Products
A recent example of a customer product using C
EXECUTIVE is the Paknet radio data network
of Vodafone Data Network Ltd. This network provides radio data packet
service throughout the UK,
using C EXECUTIVE running on 386 and 486 processors.
If you are interested in space missions using C
EXECUTIVE, you may wish to refer to the
TERRIERS web site
of Boston University, the GPS/MET web site
maintained by the University Corporation for Atmospheric Research, or
to an overview of OrbView-1 at the GPS
Space Missions web site maintained by the University of New
Brunswick. GPS/MET was built using a modified
Allen Osborne GPS receiver, which uses the 29000
version of C EXECUTIVE.
Another example of a customer product using C
EXECUTIVE is the LogicDart from Hewlett-Packard. You may note that this
product was featured on the cover of Embedded Systems Programming's
1998 Buyer's Guide, the de facto reference document for the embedded
systems industry. This advanced logic probe uses the 80186 version of C
EXECUTIVE to provide a powerful
hand-held instrument for testing new microprocessor boards and other
digital
logic. This product won the Test Product of the Year award
for 1998 as a "clear winner". You can also read about the LogicDart
in the cover story of the March, 1998, issue of PennWell's Portable Design magazine. To get the full
details on this product, check out Hewlett-Packard's LogicDart
announcement.
Another example of a customer product using C
EXECUTIVE is Padcom's SmartPath router. To learn more about this
device, using C EXECUTIVE and CE-TCP on a 386EX, please refer to Padcom's web site .
Please come back to see more interesting JMI customers' products, including everything
from cash registers to space satellites.
Pricing
C EXECUTIVE and PSX are sold either on a one-time fee
with no royalties, or, for small projects, on a sliding scale of per
copy prices. Contact JMI for the pricing plan that meets your needs.
Training Course
JMI Software Systems, Inc. offers a standard training course for C EXECUTIVE and PSX.
Consulting Services
JMI Software Systems, Inc. offers consulting services
for custom drivers and product extensions for C EXECUTIVE and PSX, as
well as complete applications systems. Additional major consulting
services
are available through associated companies .
Contact Information
Corporate matters: The
products of the former JMI Software Systems, Inc.,
are now owned by DLR Ventures, LLC,
Email: infotwo at jmi.com
Copyright © 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
2005, 2006
JMI
Software Systems, Inc., 2008 DLR Ventures, LLC
Web site last updated January 1, 2008.
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Makes | C | EXECUTIVE | and | PSX | multitasking, | ROMable | kernels | for | embedded | systems. | C | EXECUTIVE | runs | on | 8/16/32 | bit | CISC | CPUs, | many | RISC | CPUs, | DSPs, | over | 20 | so | far: | fast | context | switching, | compact. | Options: |
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Makes C EXECUTIVE and PSX multitasking, ROMable kernels for embedded systems. C EXECUTIVE runs on 8/16/32 bit CISC CPUs, many RISC CPUs, DSPs, over 20 so far: fast context switching, compact. Options:
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