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From: sentinel@killer.UUCP
Newsgroups: comp.lang.forth
Subject: Re: TIL design topics
Message-ID: <345@killer.UUCP>
Date: Sun, 23-Nov-86 02:52:48 EST
Article-I.D.: killer.345
Posted: Sun Nov 23 02:52:48 1986
Date-Received: Mon, 24-Nov-86 01:05:44 EST
References: <1001@usl.UUCP> <754@argon.idec.stc.co.uk>
Organization: The Unix(tm) Connection, Dallas, Texas
Lines: 20
Keywords: Roll Your Own Language

In article <754@argon.idec.stc.co.uk>, howellg@idec.stc.co.uk (Gareth Howell) writes:
> Have you considered swapping your 6502 for a Western Digital 65802
> processor.  [etc]

    I would like to point out that this mod is most likely impossible on a
128.  The processor in the C-128 is actually an 8502, which is yet another
custom Commodore derivative.  The 8502 is apparently a 2 Mhz version of the
6510, which was used in the 64.
    Therein lies the problem.  The 6510 (and the 8502) has an 8-bit I/O
port built in, which are located at addresses $0000-$0001.  And needless to
say, the C-128 and C-64 use this port (for hardware configuration and tape
I/O).
    If there was a 65802 with the proper I/O port on board, it should be
possible to replace the 8502 with it, but otherwise this modification
is not feasible.

    By the way, if this has been done, you may ignore me.
----
Rob Tillotson
...ihnp4!killer!sentinel