Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!cbmvax!daveh
From: daveh@cbmvax.commodore.com (Dave Haynie)
Newsgroups: sci.electronics
Subject: Re: Nintendo
Message-ID: <22138@cbmvax.commodore.com>
Date: 4 Jun 91 01:03:58 GMT
References: <1991Jun3.100758.14310@ncsu.edu>
Reply-To: daveh@cbmvax.commodore.com (Dave Haynie)
Organization: Commodore, West Chester, PA
Lines: 19
Keywords: Games, etc......

In article <1991Jun3.100758.14310@ncsu.edu> tscorbit@eos.ncsu.edu (THOMAS SAVAGE CORBITT) writes:
>I was wondering if anyone had any information about the chips
>or programming for a Nintendo????
>I have heard that it is a souped up 6502 chip with 
>extra registers and/or larger data bus etc....

It's actually kind of a souped-down 6502.  No extra registers or larger data
bus.  They redesigned portions of it to get around MOS Technology patents, 
which apparently made a few bits go slower.

The new Nintendo gizmo supposedly used a 65C816, which is a slightly souped
up 6502 -- it has 24 bit addressing, 8 bit data bus, a segmentation register,
16 bit accumulator, and a few 16 bit functions (no multiply though).


-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
	"This is my mistake.  Let me make it good." -R.E.M.