Re: A89: Re: Re: ROM v1.0
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Re: A89: Re: Re: ROM v1.0
It is my understanding that:
1) The displays are the same on each calc, except that the TI-89's is physically
smaller and has fewer pixels. The display file size is the same on both for
compatability (3840 bytes), with parts unused for the TI-89.
2) The keyboards are very likely to be layed out differently electronically to
reflect the different physical layouts..
3) The TI-92 and plus use 2M*16 flash, while the TI-89 uses only 1M*16 flash.
This would account for the presence of more built-in functions in the TI-92 plus
(like geometry apps.) and more archive memory in the TI-89.
4) Besides all of this, the systems should be identical because they both use
the exact same CPU chip.
Kaus wrote:
> it does mean a dang thing, cause the ti-89 and ti-92+ are completely
> different systems. it would be like puting your hard drive from a pc into a
> mac. isnt going to work.
>
> the ti-89 has different keypad and screen, and so the rom code to handle
> these is different. if you tried to install the rom from a ti-89 into a
> ti-92+, first of all, it wouldnt let you, because it knows the difference
> between a ti-89 and a ti-92+ rom, and 2nd of all, your screen would be
> completely messed up and you wouldnt be able to type anything. in effect,
> _don't do it!_
>
> --kaus
>
> ----- Original Message -----
> From: <ZeromusMog@aol.com>
> To: <assembly-89@lists.ticalc.org>
> Sent: Friday, August 06, 1999 2:08 PM
> Subject: Re: A89: Re: Re: ROM v1.0
>
> >
> > In a message dated 8/6/99 10:36:51 AM Pacific Daylight Time,
> > zach@operamail.com writes:
> >
> > > They couldn't use each other's ROMs because the 92+ has the geometry
> > software,
> > >
> > > which is part of the ROM, but the 89 doesn't.
> > That doesn't mean a dang thing. ^_^
> > Just because my computer isn't running Adobe Photoshop and some other
> guy's
> > isn't doesn't mean that his hard drive wouldn't work on my computer. :)
> >
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