Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!mephisto!ncsuvx!ncsuvm!netoprbh
From: NETOPRBH@ncsuvm.ncsu.edu (Brandon Hill)
Newsgroups: comp.sys.amiga.tech
Subject: speeding up the amiga and hardware hacking
Message-ID: <90005.150000NETOPRBH@NCSUVM.BITNET>
Date: 5 Jan 90 19:59:59 GMT
Organization: North Carolina State University Computing Center
Lines: 29

I have a couple of questions regarding some hardware projects
I'm thinking of undertaking.

1)  Would it be possible to run the 68000 at a speed other than 7 mhz?
    It seems like it would be easy to get, say, a 14 mhz clock from the
    28 mhz master clock (dividing it in half) and a 16 mhz 68000 and
    more or less double the processing speed.

    There are many implications in doing this...i.e. the E clock might need
    to be slowed down, as the 8520 timers should stay at the old
    frequency.

    I'm just mainly wondering if the rest of system would still communicate
    with a faster processor (it must be possible, as the 020 and 030
    accelerators run [asynchronously] faster)


2)  If I wanted another 8520 type device for my personal use, (i.e.
    I want some fast bare hardware to mess with while still allowing
    the rest of the system to multitask without interference)
    where would be the best place in the memory map to place it?

    Configuring the device as a system wide resource isn't necessary,
    as only a single dedicated application will be using it.

    There's probably no supported way to add extra hardware, however
    I'm sure some schemes are safer than others.

                                                     BlH