Re: [MiNT] Interrupt in kernel functions

To: Miro Kropáček <miro.kropacek@gmail.com>

Subject: Re: [MiNT] Interrupt in kernel functions

From: Adam Klobukowski <adamklobukowski@gmail.com>

Date: Thu, 31 Jan 2013 09:06:56 +0100

Cc: MiNT Mailing List <mint@lists.fishpool.fi>

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IMO, you are wrong. Kernel is singlethreaded (meaning that only one thread runs in kernel, but multiple may wait, for example for IO), but not uniterruptable - it would harm mouse cursor animation ;)

AdamK

2013/1/31 Miro Kropáček <miro.kropacek@gmail.com>

Hi,

just verifying -- do I understand it right that if CPU is in a kernel function (most likely because an user program used trap #n), all interrupts (autovectors -- MFP, VBL etc) are ignored as they got lower priority than trap #n exception? and vice versa, if a LineF exception occurs (think of 060 SP), kernel functions *are* interrupted?

--
MiKRO / Mystic Bytes
http://mikro.atari.org

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Semper Fidelis

Adam Klobukowski
adamklobukowski@gmail.com

References:

[MiNT] Interrupt in kernel functions
- From: Miro Kropáček <miro.kropacek@gmail.com>