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- Newsgroups: comp.os.os2.misc
- Path: sparky!uunet!wupost!csus.edu!netcom.com!feustel
- From: feustel@netcom.com (David Feustel)
- Subject: Re: Port I/O for 32 Bit Apps
- Message-ID: <1992Nov19.231947.16673@netcom.com>
- Organization: DAFCO: OS/2 Software Support & Consulting
- References: <722157399.F00004@tdkt.kksys.com>
- Date: Thu, 19 Nov 1992 23:19:47 GMT
- Lines: 20
-
- Bertram.Moshier@f115.n282.z1.tdkt.kksys.com (Bertram Moshier) writes:
-
- >David:
-
- >Actually, this question is best put on comp.os.os2.programmer. To
- >answer your question, though, what you say is true. A 32 bit OS/2
- >application can get to I/O devices. You should look at IOPL. This
- >interface allows a ring three application to perform selected ring two
- >operations (namely I/O).
-
- Could you give a simple example? My impression is that IBM doesn't
- currently use this hardware feature to permit ring 3 i/o for os2
- applications.
- --
- Dave Feustel N9MYI <feustel@netcom.com>
-
- GE knew there was lots of money to be made in the diagnostic medical
- machine field since it was only a matter of time before people started
- getting sick from the effects of all of GE's toxic and radioactive
- waste dumping. I expect GE to get into the Mortuary business next.
-