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- Xref: sparky comp.unix.pc-clone.32bit:1380 comp.unix.sys5.r3:450 comp.unix.sysv386:17934
- Path: sparky!uunet!ferkel.ucsb.edu!taco!gatech!asuvax!ncar!noao!arizona!optima.UUCP
- From: dsiegel@optima.UUCP (Dave Siegel)
- Newsgroups: comp.unix.pc-clone.32bit,comp.unix.sys5.r3,comp.unix.sysv386
- Subject: Re: PC Unix/Xenix vendors
- Message-ID: <30564@optima.cs.arizona.edu>
- Date: 26 Jan 93 22:05:33 GMT
- References: <1993Jan26.153926.19840@texhrc.uucp>
- Sender: news@cs.arizona.edu
- Followup-To: comp.unix.pc-clone.32bit
- Lines: 46
-
- From article <1993Jan26.153926.19840@texhrc.uucp>, by pyeatt@Texaco.com (Larry D. Pyeatt):
-
-
- > |> As DEC was able to build a binary compiler VAX executables to alpha,
- > |> same should be possible for a less complex architecture like 386.
- > ^^^^^^^^^^^^^^^^^^^^^^^^^
- > Have you actually written assembly code for both the VAX and the
- > 8088 family? The 80486 is not a less complex architecture than the VAX.
- > Less powerful? debatable. Less complex? no. The 80486 instruction set
- > is ridiculous.
-
- He's not talking about VAX architecture, but AXP (Alpha) architecture. Also
- I think that it should be pointed out that the program "VEST" is a >>>VMS<<<
- program, that converts >>>VMS<<< executable into (guess) >>>OpenVMS<<<
- executables.
-
- in otherwords, it don't work for unix, and it don't work for DOS. if you can
- get VMS running on a 386, be my guest.
-
- The AXP will also run OSF/1, but the unix programs need to be re-compiled in
- order to use them--no two ways about it.
-
-
- > |> How about jsut to compile your 386-Windows-3.1 excutables into
- > |> R4000-IRIX-X-executables? Impossible? ...would not bet !
-
- > It is definitely possible. But there are a lot of potential problems.
- > You probably would end up with pretty inefficient code. I guess that
- > if you really worked at it, you could do some reasonable optimizations,
- > but it wouldn't be easy.
-
- It certainly is possible, but as if different architectures at the hardware
- level wasn't bad enough, different Operating Systems makes this even more
- challenging. At least in the case of DEC they designed OpenVMS to be as close
- to VMS 5.4 (note: not VMS 5.5, though it's got some 5.5 stuff in it) as
- possible so the process of writing a binary converter was a little simpler
- than it might have otherwise been.
-
- my two cents worth.
-
- -dave
-
- Dave Siegel
- Comp Engr, UofA
- Unix Systems, BioTec
- President, RTD Systems and Networking, Inc.
-