Newsgroups: comp.arch
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: parity
Message-ID: <1989Sep8.155950.17521@utzoo.uucp>
Organization: U of Toronto Zoology
References: <21936@cup.portal.com> <7851@cbmvax.UUCP>
Date: Fri, 8 Sep 89 15:59:50 GMT

In article <7851@cbmvax.UUCP> daveh@cbmvax.UUCP (Dave Haynie) writes:
>Most PCs use partity checked memory, which lets them detect a memory error...

If they notice it.  Most PC applications either disable parity-error traps
or ignore them.  And at least one manufacturer was a little bit horrified
to discover that his parity checker didn't work and had never worked, and
nobody had noticed.  (The standard hardware does not provide any way to
*test* the parity subsystem.)
-- 
V7 /bin/mail source: 554 lines.|     Henry Spencer at U of Toronto Zoology
1989 X.400 specs: 2200+ pages. | uunet!attcan!utzoo!henry henry@zoo.toronto.edu