#: 19324 S12/OS9/68000 (OSK)
    14-Nov-93  14:47:19
Sb: #OS9, 3.0
Fm: Bob van der Poel 76510,2203
To: All

I thought some of you might be interested in this press release I found in
'Electronic Design', Oct 4/93....

Taking aim at hyper-embedded, hard real-time applications, version 3.0 of the
Microware's OS-9 operating system has a preemptible kernel, faster interrupt
response and context switching, and more efficient interprocess communication
mechanisms. The OS upgrade also has improved determinism, enhanced
memory-management facilities, and greater overall system call throughput.

For resource-limited embedded applications, Microware has the Atomic OS-9
runtime microkernel, 20% smaller and 15% faster than the standard v3.0 kernel,
yet upwardly compatible. The microkernel has a subset of the functions in the
OS-9 v.3 kernel, excluding development and debugging support...

Version 3.0 supports system-state preemption...

Microware to improve determinism [sic] has added system-state preemption to the
OS core I/O file managers. It also has a new "buddy" memory allocator,
assigning memory on a more predictable block size basis rather than on a
"first-fit" basis.

The v3.0 kernel's fast IRQ system call (F$FIRQ) .... cut the interrupt latency
in half--to 3.0us--by preforming partial register save...

[pricing info follows]...


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