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- Path: sparky!uunet!meaddata!sdw
- From: sdw@meaddata.com (Stephen Williams)
- Newsgroups: comp.os.linux
- Subject: Re: Linux and OS/2
- Date: 1 Jan 1993 21:24:22 GMT
- Organization: Mead Data Central, Dayton OH
- Lines: 55
- Message-ID: <1i2cq6INNln7@meaddata.meaddata.com>
- References: <1992Dec31.075303.19996@samba.oit.unc.edu>
- NNTP-Posting-Host: bugatti.meaddata.com
- X-Newsreader: Tin 1.1 PL5
-
- Jonathan Magid (jem@sunSITE.unc.edu) wrote:
- : In article <1992Dec30.174352.4550@gallant.apple.com> erwin#m#_mike.ast_-_tac_mail_server@msgate.corp.apple.com (Mike Erwin) writes:
- : >
- : >You can't run another whole operating system inside of another
- :
- : Try telling this to the VM people down the hall!
- :
- : jem.
- :
- : --
- : Jonathan Magid jem@sunSITE.unc.edu sunSITE Administrator
- : Virtual pizza Delivery (tm)::faxed in 30 cycles or less or you get it
- : ----------------------------------------FREE!!!-----------------------
- Right...
- The correct statement is:
-
- "Current Intel 386/486 series cannot nest 'Ring 0' programs in
- hardware."
-
- Using other terms:
- This means that a 32-bit (Ring 0, priviledged) OS (like all full
- Unixes, OS/2, Windows NT, Windows in enhanced mode) cannot run
- underneath another with simple hardware modes.
-
- They could run unpriviliged and have the priviliged instructions
- emulated.
-
- VM (On IBM compatible Mainframes) does this nesting, either in
- hardware or software (I don't know...).
-
- What the world (at least the Unix world) needs right now is a 'virtual
- 386 mode', where the 386-8086 part is emulated in software. This
- would even allow a version of Unix to run under itself. This would be
- great for debugging (kernels, startup, etc.).
-
- Additionally, running Windows programs in a 32-bit environment under
- Unix and translating (optionally) the video calls (via a special
- Windows graphic device driver? which should get high-level commands)
- to X would be fantastic.
-
- All it takes is some hard work.
-
- Note that Soft-PC and Sun-PC both emulate at least a 286 in software,
- as that is what it takes to run Windows 3.1 (unlike 3.0 which would
- run on 8086).
-
- The Sun-PC 486 board even lets you run a full 32-bit application/os's with
- full vga mapped efficiently onto X windows.
-
- sdw
- --
- Stephen D. Williams Local Internet Gateway Co.; SDW Systems 513 496-5223APager
- LIG dev./sales Internet: sdw@world.std.com CIS 76244.210@compuserve.com
- OO R&D Source Dist. By Horse: 10028 Village Tree Ct., Miamisburg, OH 45342
- GNU Support ICBM: 39 34N 85 15W I love it when a plan comes together
-