Date:	Tue, 12 Sep 1995 16:23:46 +1000
To:	djgpp AT sun DOT soe DOT clarkson DOT edu
From:	digisoft AT eis DOT net DOT au (Paul)
Subject:	Re: interrupt stops being invoked

>Brendan Simon (brendan AT rdt DOT monash DOT edu DOT au) wrote:
>: >From: Sam Vincent <svincent AT zippy DOT sonoma DOT edu>
>: >You must use djgpp version 2.0 and lock the memory touched by the interrupt
>: >routine in order to grab a hardware interrupt.. otherwise the paging
>: >mechanism (due to virtual memory) could end up triggering a page fault
>: >in the middle of a hardware interrupt..  (not good.. a machine lockup)
>: >
>: >-Sam

I've got a question on this subject also.

How can you get the size of a piece of "C" code that services the interrupt
so that it can be locked.  Up till now I just lock it all to be safe.

+===================================================================+
Paul Coward               Whenever you find that you are on the side
digisoft AT eis DOT net DOT au       of the majority, it is time to reform.
                                                          Mark Twain

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