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- Path: sparky!uunet!mcsun!sunic!chalmers.se!dtek.chalmers.se!d1gunnar
- From: d1gunnar@dtek.chalmers.se (Gunnar Andersson)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: 68010 SWITCH !!!
- Message-ID: <13422@chalmers.se>
- Date: 15 Aug 92 13:44:30 GMT
- References: <Zapper.0ivw@qube.OCUnix.On.Ca>
- Sender: news@chalmers.se
- Organization: Chalmers University of Technology, Gothenburg Sweden
- Lines: 26
-
- Zapper@qube.OCUnix.On.Ca (Zapper) writes:
-
- >> ...I am thinking about piggy-backing a 68010 with my 68000 and
- >> installing a switch to switch between chips, so I get the best
- >> of both worlds... Has anyone tried this or does
- >> anyone have any suggestions or warnings about this idea...??
-
- > Have you actually tried a 68010 by any chance? I can't imagine going
- >throught the trouble of building a huge tri-state array to switch between
- >CPUs just for a measly single digit percentage in speed increase...
-
- Well actually, it may not have to be that difficult. If I remember correctly,
- a lot of the pins go into high-impedance state when the _HALT pin is
- grounded. I don't think it is really worth the trouble, either, but it
- should be possible. Get a hold of some data-sheet for the 68000/010 and
- see what pins (if not all) become "high-impedance" when halted. If it's
- true it may just be a case of piggy-backing and halting the chip which isn't
- in use. Beware, though I think it was only some of the pins that had this
- feature.
-
- *----------------------------------------------------------------------------*
- | Gunnar Andersson -- d1gunnar@dtek.chalmers.se |
- | Chalmers University of Technology, Sweden |
- *----------------------------------------------------------------------------*
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