Re: interrupt chaining

Article View: comp.sys.ibm.pc.programmer

Article #397

Back to comp.sys.ibm.pc.programmer Previous Next

#397

From: Tom Boutell
Date: Fri, 04 May 1990 20:22

15 lines
1323 bytes

I suspect that reenabling interrupts becomes "safe," in the words of the
infamous references, when it is no longer possible for *that specific*
interrupt to be generated *again.* For instance, if you need to have an
especially long- duration serial driver, you would need to block interrupts
from that source specifically before reenabling interrupts generally,
then reallow interrupts from that source when finally done.

Of course, if your code manages to be reentrant, these worries don't
apply. (-:

--
CRANBERRIES! ALBUQUERQUE! This is the start of the end of the beginning of
the middle of the last day of the first part of your life! NEWSPRINT GALORE!
Disclaimer: Datclaimer. Elvis is alive and doing my laundry. Turn down
your air guitar, I can't see the band! I lied, he's dead. Have a #$&$( day.

Technical Details

Message-ID: <18562@nigel.udel.EDU>

Path:

arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!usc!wuarchive!udel!freezer!boutell

References: <481@wjh12.harvard.edu>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!usc!wuarchive!udel!freezer!boutell
From: boutell@freezer.it.udel.edu (Tom Boutell)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: Re: interrupt chaining
Message-ID: <18562@nigel.udel.EDU>
Date: 4 May 90 20:22:54 GMT
References: <481@wjh12.harvard.edu>
Sender: usenet@udel.EDU
Reply-To: boutell@freezer.it.udel.edu (Tom Boutell)
Distribution: na
Organization: University of Delaware -- 040 Smith Sun Lab
Lines: 15

Reply to Parent Message