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From: wte@sauron.Columbia.NCR.COM (Bill Eason)
Newsgroups: sci.electronics
Subject: Re: math co-processor??
Message-ID: <2172@sauron.Columbia.NCR.COM>
Date: 5 Jun 90 13:22:08 GMT
References: <3002@crash.cts.com>
Reply-To: wte@sauron.UUCP (Bill Eason)
Organization: E&M-Columbia, NCR Corp, W Columbia, SC
Lines: 26

In article <3002@crash.cts.com> sazerb@pnet01.cts.com (S Zerbe) writes:
>I was digging around inside my xt-clone tonight and was trying to find the
>locations of the various chips.  I Know that the microprocessor is the 8088-2
>but there was a chip next to it with the following on it:
>            NEC 8643w5 V20
>            D70108c-8
>            '84 NEC
>Steven Zerbe   KA4YND
>UUCP: {nosc ucsd hplabs!hp-sdd}!crash!pnet01!sazerb

Did you ever locate the 8088 in your system?  My guess is that you
didn't.  The NEC V20 is a pin-compatible replacement for the 8088,
but with reduced execution times for several instructions, and with
a few added instructions.  They're very near the same price as the
Intel part, and can enhance the throughput of your PC.

BTW, the V30 is the same deal for the 8086.  Check this in the 
back of BYTE or the like, but I think they claim 20-30% increase 
in speed.

- Bill

-- 
Bill Eason   (803) 791-6348	...bill.eason@ncrcae.Columbia.NCR.COM
NCR Corporation
E&M Columbia     3325 Platt Springs Road     West Columbia, SC 29169