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SubjectRe: faux RT and periodicity for multimedia
On Wed, Nov 11, 1998 at 06:38:10PM -0500, Rick Hohensee wrote:

> What is possible in terms of periodic fast services?
>
> What I have seen in this regard is AmigaDos, which had a
> handful of fast services every video horizontal sync, and then
> was single-user multi-tasking for the balance of the period.
> This isn't true RT, but periodic stuff ( like feeding the
> native audio DACs) appeared to be right quick.

The odd bus cycles reserved in the Amiga's bus timing for feeding audio
only are used exclusively by the audio DMA, a hardware only thing so don't
really fit into the RT topic.

Nevertheless AmigaDOS was doing quite nicely for many soft realtime apps
for example due to it's simple, fast scheduler.

Ralf

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