Re: [rtl] Documentation !! WHERE ??

[Chris Albertson <chris@topdog.pas1.logicon.com>]

Brendan Simon wrote:
> 
> I clicked on the Documentation link on the web page but there is nothing
> there.  Where can I get the LATEST docs (ps,pdf,html) on RT-Linux ??

I am a user not one of the developers.  Here is what I think:
> 
> General Questions
> ~~~~~~~~~~~~~~~~~
> 
> Is RTL similar to LynxOS or other RTOS's ?
> 
> How stable is RT-Linux ?

I have a system that has run for about 48 days now with now
reboot.  However a programming error in an RT task can lock
up the system but that is a "user problem" not an "RTL 
problem"
> 
> Does RTL have similar features and objects as commercial RTOS's ?
> eg. Message Queues, Pipes, Events, Signals between RTL Tasks,
> Semaphores, Timers,

RTL is a "micro RT OS" that runs Linux as an RT task along side
user written RT tasks.  So RTL can be said to have every feature
that UNIX has but many features are not available to a real-time
task.  The way you solve a problem in RTL is to devide the job
between Linux processes which run in a feature ritch evironment
and RT Tasks which hav only basic services.
> 
> How does RTL differ from commercial RTOS's ?

See above.
> 
> Can one have only RTL Tasks running.  ie. remove the reset of the linux
> system ?  If so, can the IP stack be make a RTL Task ?  What about other
> services such as FTP, HTTP, ICMP, TFTP, SNMP, etc.

IP and FTP, HTTP, ICMP, TFTP, SNMP, etc are done by Linux.

The way I get RT data out of the box is:  An RT Task reads and
buffers real-time data then sends it to a Linux Process that
writes it our a UNIX socket.
> 
> Does RTL have remote debugging and probing of object info (tasks,
> queues, timers etc).  Like VxWorks, PSOS, etc.

You can always telnet into the Linux system from anywhere.
I wrote an RT task that reads debug and status from an RT fifo.
This becomes a "do it your self" remote debug
> 
> Can RTL be made to work on very low resource boards/processors.
> eg.  8, 16 bit processors, 32K, 64K, 128K ... RAM/ROM ?

It will run on whatever (Intel system) Linux runs on
> 
> Thanks heaps,
> BTW is there an FAQ that would answer these questions ?
> 
> Brendan Simon
> brendan@dgs.monash.edu.au
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-- 
--Chris Albertson

  chris@topdog.logicon.com                Voice:  626-351-0089  X127
  Logicon RDA, Pasadena California          Fax:  626-351-0699
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