Re: LF: on my ti-92 cpu upgrade project
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I have one question- Why the heck do you need to even *Think* about
upgrading your 92 to an 060? Do the 6 fargo programs out there go to )Slow( for you??? If not, then why the heck waste your time? The 92 is fine the way it is, no need to go RippinG it apart just to perform a silly
upgrade that isn't neccessary.
On Tue, 19 Nov 1996 07:10:20 -0600 (CST) Erik Buehler <erikb@ksu.edu>
writes:
>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
>
>
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