David Fontaine wrote:
> 
> The 48 sounds pretty much the same as the 89.
> 
> The 89 has the old carbon contact buttons with the rubber sheet. Those wear
> out after many years, fixing an old-skool Nintendo controller the rubber
> sheet was practically shredded. Stuff like that.

It's a pity that they use this solution !

Some 8 years ago I had to buy several spare rubber 
sheets for my ZX Spectrum.

> 10Mhz Motorola 68000. :D

=)

Cool ! I like those.

This may be a good reason for me to have a closer look 
at the TI-89.

Maybe I could make some interesting electronic add-on-
gizmos for it.

Is it possible to access the uProcessor bus from the 
outside of the calculator ?


> The 89 does symbolic calculation, derivation and integration (symbolically),
> FLASH ROM for the upgradeable ROM and for the archive memory, where you can
> store variables and stuff that don't get edited, like most asm games. It's
> got 188k user-available RAM and 384k FLASHROM. Nice high-res display,
> 160x100. Everything is displayed as it would be written in a textbook. It has
> tons of functions, like complex zeroes, taylor series, limit, sigma including
> to infinity, product including to infinity, 3D graphing. The algebraic solver
> can take any number of entries compounded by 'and', like 'y=2x^4+5 and y=5x
> and x>2', and it can return expressions if the solution isn't a number. And
> of course differential equation graphing and all that. I don't think RAM is
> upgradeable, but there are 3rd party RAM expansions that use the link port.
> There is now a freeware 3rd party gcc compiler for it too. Woohoo!

Sounds promising !

Are there any emulators for it ?


Regards,

Tor Olav
-- 
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html

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