Re: A83: Inside the TI-83

To: assembly-83@lists.ticalc.org
Subject: Re: A83: Inside the TI-83
From: mhlandry <mhlandry@bellsouth.net>
Date: Sun, 25 Jul 1999 15:04:35 -0500
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-83@lists.ticalc.org
References: <000101bed664$b25a7960$9540fea9@celery300.earthlink.net> <379B497A.7169@bellsouth.net> <379B5AB4.54293485@hem.passagen.se>
Reply-To: assembly-83@lists.ticalc.org


What about the TI chip olle?
	- Matt

Olle Hedman wrote:
> 
> The lcd-driver is a toshiba T6A04. The pdf for it can be found at
> ftp://alh.dhs.org/calculator/ti83/tech/t6a04.pdf
> It seems like toshiba has stopped having this pdf on their site..
> maybe they have putted it up again, or maybe they have moved it, I don't know.
> You can find it above anyway.
> 
> //Olle
> 
> mhlandry wrote:
> >
> > Well, a friend of mine has already identified the part number of the
> > epson chip as the rom.  And he also thinks the toshiba chip to be the
> > lcd driver, so....
> >         - Matt
> >
> > CrASH_Man wrote:
> > >
> > > >From what I know, the TOSHIBA chip is actually the z80-clone chip (there's
> > > no actual zilog chip) and the TI chip is the ROM.  The other chip is
> > > probably the RAM.  That's the way it is inside the TI-82.
> > >
> > > it would probably help if someone can identify any part numbers on the
> > > chips.
> > >
> > > The Z80 is supposed to have 40 pins, but I'm not sure about this TOSHIBA
> > > clone (though I would assume it should be the same)
> > >
> > > -crashman
> > >
> > > > Hey Linus, I figured you would be the one, if any, to reply.  First
> > > > off, I have a rom version 1.07, and could only find three distinct ic's,
> > > > while my friend with a rom version 1.06 had four ic's.  Now, I have a
> > > > toshiba ic, which I think is the lcd driver, an epson ic, which I think
> > > > is the rom, and a TI ic (it says (C) 1996 TI, which I cannot find out
> > > > what it is.  I am wondering if this is the z80, because I cant find
> > > > anything that resembles the z80, which is suposed to have forty pins
> > > > right, (44 maybe?).  The three ic's that I see are 28,32, and 80 pins.
> > > > My main question is where is my z80 chip.  And the other question is,
> > > > what is the "TI" ic?
> > > >       I sent TI an email but they replied with something stupid,
> > > > although the
> > > > guy was nice about it.
> > > >       - Matt
> > > >
> > > > Linus Akesson wrote:
> > > > >
> > > > > In accordance with the prophecy, mhlandry uttered:
> > > > >
> > > > > > Anyone on this list ever open up their 83?  If so I have some
> > > > > > questions, thanks.
> > > > > >     - Matt
> > > > >
> > > > > Sure did, what are the questions?
> > > > >
> > > > > Linus
> > > > >
> > > > > - --- Linus Akesson ------------------------
> > > http://linusworld.cjb.net --- -
> > > >
> > > >               IBM & M$ are trademarks; Amiga is a philosophy.

References:

RE: A83: Inside the TI-83

From: "CrASH_Man" <crashman@crashware.lfx.org>

Re: A83: Inside the TI-83

From: mhlandry <mhlandry@bellsouth.net>

Re: A83: Inside the TI-83

From: Olle Hedman <oh@hem.passagen.se>