12 Jan
2015
12 Jan
'15
6:57 p.m.
On 2015-01-12 19:48, Vincent Slyngstad wrote:
From: Johnny Billquist: Monday, January 12, 2015 10:42
AM
But anything running constantly with the interrupts off should not be
in the "competition". As it's hardly called latency when you just
ignore the signal.
What I've seen is systems that collect data with interrupts on, but do
have to turn interrupts off when calling OS/8 services, or OS/8 will crash.
AFAIK, all OS/8 services and drivers require this, even things like the
RK05 driver.
Right. But it's not that things will crash in OS/8, but you will get
interrupts as a result of OS/8 operations, which you most probably do
not want, and might not even know how to deal with. And stealing the
completion of an operation through an interrupt might mean OS/8 never
notice that an operation completes.
So you will get OS/8 hangs, and your interrupt system will get
interrupts you never expected.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
And of course, you also have things like OS/8, which
runs with
interrupts off at all times, to which the answer to the original
question would be "OS/8". :-)
Exactly :-)