Message-Id: <m0wU9U0-000S1zC@natacha.inti.edu.ar>
Comments: Authenticated sender is <salvador AT natacha DOT inti DOT edu DOT ar>
From: "Salvador Eduardo Tropea (SET)" <salvador AT inti DOT edu DOT ar>
Organization: INTI
To: Esa A E Peuha <peuha AT cc DOT helsinki DOT fi>, djgpp AT delorie DOT com
Date: Wed, 21 May 1997 14:40:35 +0000
MIME-Version: 1.0
Content-type: text/plain; charset=US-ASCII
Content-transfer-encoding: 7BIT
Subject: Re: help! FPU emulation worries... (RHIDE?)
Precedence: bulk

Esa A E Peuha <peuha AT cc DOT helsinki DOT fi> wrote:
> Calvin French <frenchc AT cadvision DOT com> wrote:
> : But I heard 
> : that 487s are just 486DXs with the main processor turned off, so getting a 
> : 487 seems a bit of a waste.
> 
> Another version of this rumor is that a 486SX is a 486DX with FP
> operations disabled, 
More than a rumor, seems that Intel cut the FP unit to reduce the power 
consumption and be able to use a plastic package reducing the cost of the chip 
and having a new product on the market to beat AMD that was producing 386DX 
40MHz chips thanks to the better degree of integration achieved by AMD.

> and a 487 is a complete 486DX. 487, when installed, will
> just disable the 486SX.
The connection seems to show that, so I guess that's more than a rumor.

SET 
------------------------------------ 0 --------------------------------
Visit my home page: http://www.geocities.com/SiliconValley/Vista/6552/
Salvador Eduardo Tropea (SET). (Electronics Engineer)
Address: Curapaligue 2124, Caseros, 3 de Febrero
Buenos Aires, (1678), ARGENTINA
TE: +(541) 759 0013