Re: Math coprocessor for PC Transporter?

[steve@dosius.zzn.com (Dosius)]

Yves McDonald <""yves.mcdonald\"@NO SPAM sympatico.ca> wrote in message news:<h_1v9.1857$h_4.225519@news20.bellglobal.com>...
> I don't know much about the 80287-10 but I know it's designed for the 
> 80286 but according to AE doc, the empty socket was for a 8087-2 math 
> co-processor.  The Transporter itself is powered by a V-30 (8086 
> compatible) at 7.14 MHz: twice as fast as the original IBM PC :)  The 
> 8087 coprocessor was a popular upgrade for CAD users.
> 
> Herbert Fung wrote:
> 
> > Since I don't know much about older PC hardware I wanted to ask if anyone
> > knew what chips are compatible for the math co-processor socket on a PC. I
> > understand that an 8087 is intended, but I'm wondering what else would work.
> > 
> > I manged to find a D80287-10 and it's pin compatible, but I wanted to see if
> > anyone knew if it was safe to use.
> > 
> > 
> >

Not quite twice (4.77*2=9.54) :)  btw, V-30 could emulate an 8080 and
run CP/M, theoretically...