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Date:      Sat, 26 Oct 1996 14:48:41 +0930 (CST)
From:      Michael Smith <msmith@atrad.adelaide.edu.au>
To:        nate@mt.sri.com (Nate Williams)
Cc:        terry@lambert.org, msmith@atrad.adelaide.edu.au, hackers@freebsd.org
Subject:   Re: DOS emulation (was Re: Networking in PCEMU (1/2))
Message-ID:  <199610260518.OAA22174@genesis.atrad.adelaide.edu.au>
In-Reply-To: <199610251901.NAA11438@rocky.mt.sri.com> from "Nate Williams" at Oct 25, 96 01:01:30 pm

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Nate Williams stands accused of saying:
>
> > Which only works on Intel platforms.  8-(.
> 
> Yep.  To expect more than that is foolishness.  Insignia software has
> spents *millions* of dollars on their x86 emulation software, and it
> still isn't very impressive.  Expecting that a single-individual or
> group of individuals could produce something that is even on par with
> their product is silly.

Actually, I get the impression that Insignia have spent most of their 
money chasing the Windows API, but I could be wrong there.

Nevertheless, it is worth observing that the Hedley emulator (186) was
written in less than a year by basically one person, and works more than
adequately well 8)

> You'd have better luck building 'translator' code that changes the x86
> opcodes into native instructions on each platform, which DEC and IBM
> have done.

ARDI do that too; I seem to recall they actually published a paper on
the topic.  Of course the 68000 is a much more rational processor to
emulate 8)

> Nate

-- 
]] Mike Smith, Software Engineer        msmith@gsoft.com.au.au          [[
]] Genesis Software                     genesis@gsoft.com.au            [[
]] High-speed data acquisition and      (GSM mobile)     0411-222-496   [[
]] realtime instrument control.         (ph)          +61-8-8267-3493   [[
]] Unix hardware collector.             "Where are your PEZ?" The Tick  [[



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