Article View: comp.sys.intel
Article #1560POPF still broken in 286?
From: Don Deal
Date: Mon, 17 Nov 1986 02:07
Date: Mon, 17 Nov 1986 02:07
18 lines
1393 bytes
1393 bytes
IBM put a warning in the AT Technical Reference, and I can remember
several people complaining about a problem with the POPF instruction that
allowed interrupts to be processed even when interrupts had been disabled.
Was this problem fixed in subsequent masks for the 286, or does it still
exist?
That a problem like this could occur (and has with vendors other than
Intel) makes me wonder what kind of testing goes on before products are
released to market. Given that increasingly complicated architectures
are showing up in most microprocessor families, it would seem that additional
testing is in order. Is anyone familiar with the testing cycles that go
on for microprocessors?
--
D.L. Deal, Office of Computing Services, Georgia Tech, Atlanta GA, 30332-0275
Phone: (404) 894-4660 ARPA: don@pyr.ocs.gatech.edu BITNET: cc100dd@gitvm1
uucp: ...!{akgua,allegra,amd,hplabs,ihnp4,masscomp,ut-ngp}!gatech!gitpyr!don
Technical Details
Message-ID:
<2646@gitpyr.gatech.EDU>Path:
arc1-ca.pugleaf.net!utzoo!mnetor!seismo!gatech!gitpyr!donShow Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!gatech!gitpyr!don From: don@gitpyr.gatech.EDU (Don Deal) Newsgroups: comp.sys.intel Subject: POPF still broken in 286? Message-ID: <2646@gitpyr.gatech.EDU> Date: Sun, 16-Nov-86 21:07:10 EST Article-I.D.: gitpyr.2646 Posted: Sun Nov 16 21:07:10 1986 Date-Received: Mon, 17-Nov-86 07:04:35 EST Organization: Georgia Institute of Technology Lines: 18