Re: TI-H: On my cpu upgrade project
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Erik Buehler wrote:
>
> I have come across some new info. The 10mHz version of the 68000 executes
> around 3.3MIPS. The 68060@66mHz executes around 100MIPS. The two are
> instructionally compatible, but the 68060 uses 214(?) pins and the 68000
> uses 64 pins. I have located a picture of the design packaging. I have
> opened up my 92 to see the chip, and have determined that the chip
> packaging, # of pins, and pin placement are identical to the 68000 that is
> commercially available. The operating voltages of each, I'm not sure of,
> and I'm not sure whether the pin out is the same, but I'm looking into it.
> I have also learned that the 68000 and the 68060 (which is 33 time
> faster!!!) are instructionally identical. I am currently conceptualizing a
> way to interface the 68060 with the ti-92. The best way might be to
> disconnect the stock 68000, attach ribbon cabel to the surface leads, and
> run the cable out the side of the calculator. This would allow me to bread
> board the 68060 to determine what is required to interface the two. An
> easier option would be to remove the stock CPU and replace it with the 20mHz
> version. I am not sure, but I believe that there is a 25mHz and 33mHz
> version out there some where, but I'm not sure on pin compatibility. I'll
> keep y'all posted.
> Erik Buehler
> Email me at: erikb@ksu.ksu.edu
Maybe you try better with a 68020 !
It is much more like the 68000, very cheap and it will work !!
Of course it is not as fast as a 68060, but i think it should do ..
Just my 2 cents...
Nils
P.S. What about a memory Upgrade for the TI 92 ???
Does sombody get it to work ????
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Name: Nils Heidorn
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