Message-ID: <19980406091532.27504@freebie.lemis.com>
Date: Mon, 6 Apr 1998 09:15:32 +0930
From: Greg Lehey <grog@lemis.com>
To: pete@dunnington.u-net.com, pups@minnie.cs.adfa.oz.au
Subject: Re: Bug in Bob Supnik's Emulator!
References: <199804030750.XAA10664@moe.2bsd.com> <19980403172621.30485@papillon.lemis.com> <grog@lemis.com> <9804031317.ZM14102@indy.dunnington.york.ac.uk>
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In-Reply-To: <9804031317.ZM14102@indy.dunnington.york.ac.uk>; from Pete Turnbull on Fri, Apr 03, 1998 at 12:17:19PM +0000
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On Fri,  3 April 1998 at 12:17:19 +0000, Pete Turnbull wrote:
> On Apr 3, 17:26, Greg Lehey wrote:
>> On 2 April 1998 at 23:50:23 -0800, Steven M. Schultz wrote:
>
>>> 	Not having any great need of an emulated PDP-11 I've not pursued
>>> 	the (suspected) bug in Bob Supnik's emulator.  Even on a PentiumPro
>>> 	an emulated 11 is slower than a real 11/73 (and a lot slower than an
>>> 	11/93 - which I should cease neglecting and stuff a SCSI card into
>>> 	some day as I did with the 11/73).
>>
>> Interesting.  I was running this on an AMD K6/233, which should be
>> slower than a PPro, and I had the impression it was faster.  Does
>> anybody have some benchmarks?
>
> I don't have numbers for anything running under the emulator, but I do have
> Dhrystone sources (and some figures for real PDP-11s of various sorts with
> various operating systems and compilers).  If anyone wants to try it, I can
> post the source.

I'd be interested.

Greg