Article View: comp.sys.amiga.tech
Article #13357speeding up the amiga and hardware hacking
From: Brandon Hill
Date: Fri, 05 Jan 1990 19:59
Date: Fri, 05 Jan 1990 19:59
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1680 bytes
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
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Path: arc1-ca.pugleaf.net!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