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From: joeloda@aicchi.UUCP (Joseph D. Loda)
Newsgroups: net.micro.apple
Subject: News on alternative Apple processors
Message-ID: <404@aicchi.UUCP>
Date: Sat, 16-Mar-85 15:10:41 EST
Article-I.D.: aicchi.404
Posted: Sat Mar 16 15:10:41 1985
Date-Received: Sun, 17-Mar-85 02:42:12 EST
Distribution: net
Organization: Analysts International Corp; Chicago Branch
Lines: 37


    Awhile back, I posted a request for information on the use of a 65C02
in an Apple ][+.  Thankfully, several good responses were posted.  

    In the latest (March 1985, V8 #3) issue of Call-APPLE, the Apple Doctor
column (written by Bruce Field) contained a small article of "other" processors
for the ][+.  Here are some of the "high points" of the article:

    - The 65C02 is pin compatible with the 6502, and has 27 additional
      instructions.

    - Chips manufactured by different manufacturers are not all the same.
      For instance, the Rockwell chip has four more instructions dealing
      with bit manipulation.

    - A given 65C02 may or may not work in an Apple ][ or ][+.

    - Two new chips have recently appeared, a 65802 and 65816.  These are
      CMOS chips with 16 bit registers and contain 6502 emulators.

    - The 65802 is pin compatible with the 6502, and can be used in any
      Apple.  The author notes that hew was told that this chip will
      work in a //e, but does not know if it will work in the older
      ][ or ][+ models.  (I suspect that this will probably be the
      same old **** as with the 65C02 for us ][ owners.  Wouldn't it be
      nice if Apple INC. would offer processor upgrade kits?)

   - The 65816 is not 6502 pin compatible.

   - The author notes that most of his information came from "Apple Assembly
     Line", published by S-C Software, PO Box 280300, Dallas, Tx 75228.
     (BTW, any comments on this newsletter?)
-- 
Joe Loda
Analysts International (Chicago Branch)
(312) 882-4673
..!ihnp4!aicchi!joeloda