Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!mit-eddie!uw-beaver!zephyr.ens.tek.com!orca.wv.tek.com!frip!andrew
From: andrew@frip.WV.TEK.COM (Andrew Klossner)
Newsgroups: comp.sys.m88k
Subject: Re: Emulating other computers on 88K's
Message-ID: <9298@orca.wv.tek.com>
Date: 8 Oct 90 20:26:56 GMT
References: <1990Oct3.095041.9295@canterbury.ac.nz> <47041@mcdchg.chg.mcd.mot.com>
Sender: andrew@orca.wv.tek.com
Reply-To: andrew@frip.wv.tek.com
Organization: Tektronix, Wilsonville, Oregon
Lines: 17

[]

	"On a dedicated system, performance is acceptable.  However,
	such emulations are resource hogs ..."

Yes.  In the case of Insignia's Soft PC product, the process never goes
to sleep except when doing I/O.  When the emulated MSDOS program
sleeps, and MSDOS enters its idle loop, Soft PC keeps the pedal to the
metal emulating that idle loop.

The operator can suspend Soft PC, freezing the simulated machine, when
some other Unix process needs to get some work done.  (In the Tektronix
implementation, this is done by mouse-clicking on the ON/OFF button on
the simulated front panel.)

  -=- Andrew Klossner   (uunet!tektronix!frip.WV.TEK!andrew)    [UUCP]
                        (andrew%frip.wv.tek.com@relay.cs.net)   [ARPA]