[Arm-netbook] parallax open cpu
Luke Kenneth Casson Leighton
lkcl at lkcl.net
Fri Aug 8 07:53:58 BST 2014
On Thu, Aug 7, 2014 at 11:12 PM, Christopher Havel
<laserhawk64 at gmail.com> wrote:
> Yeeeeeeaaaaaaaaaaaaaah no interrupts.
no interrupt HANDLERs. read the wiki page. they have a far more
superior way of dealing with interrupts: instead of "oh let's save the
context, jump the instructions and oh wait yeah we have to restore it
afterwards" resulting in unpredictable latency they dedicate an ENTIRE
CORE to handling the event, which waits idle and INSTANTLY responds to
the GPIO event.
so it is a far, far superior architecture for dealing with real-time
processing because it is quite literally zero latency.
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