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From: wcs@ho95e.UUCP (Bill.Stewart.4K435.x0705)
Newsgroups: net.micro.att
Subject: Re: Can a 6300 use a 8087?
Message-ID: <167@ho95e.UUCP>
Date: Mon, 16-Sep-85 12:30:52 EDT
Article-I.D.: ho95e.167
Posted: Mon Sep 16 12:30:52 1985
Date-Received: Tue, 17-Sep-85 05:49:00 EDT
References: <122000001@trsvax>
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 32

> 
>      Does anybody know if the AT&T 6300 --8086 machine can use a 8087 chip.

You need an 8087-2 chip.  AT&T retails them; I assume other people do too.
>      Also, do IBM type boards really work in it's expansion slots. 
Yep.  You can put two types of things in the slots; stuff that uses
an 8-bit bus (i.e. standard IBM-compatible boards), or stuff that
uses a 16-bit bus, which can ship data twice as fast (most of these
are AT&T products, but I think there are some boards not made by us
or Olivetti.)  I think there's a limit (3?) to the number of 16-bit
slots available.

For memory, you can do 3 things:
	1) Use IBM-PC compatible memory.  This means using the 8-bit
		bus, which is slow & boring.
	2) Buy memory boards from AT&T, which use 64K chips.  This
		is ok, and is the way to go if you want between 256
		and 512K of memory, since it uses the 16-bit bus.
		(There are some application boards you can plug in
		that occupy part of the MS-DOS memory address space,
		and can't cope with 640K systems.)
	3) Buy the AT&T 6300 with 128K of memory.  This gives you a
	motherboard with 18 64K chips and 18 sockets.  Buy 18 256K
	150-ns memory chips and plug them in.  (We sell some nice
	chips, or you can buy them from lots of mail-order places.)
	Dredge up an article posted on this newsgroup a few months
	ago that has the switch settings.  Now you've got 640K,
	much cheaper than if you'd used 64K-based boards, and you
	haven't used up any slots.  It also uses less power and
	generates less heat.
-- 
## Bill Stewart, AT&T Bell Labs, Holmdel NJ 1-201-949-0705 ihnp4!ho95c!wcs