Re: A89: HW1, HW2, and HW3?
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Re: A89: HW1, HW2, and HW3?
It doens't make sense that TI would release a premature, modified version of
the TI-89 into the marketplace without testing it first.
Bryan
----- Original Message -----
From: "Olle Hedman" <oh@hem.passagen.se>
To: <assembly-89@lists.ticalc.org>
Sent: Sunday, December 12, 1999 11:29 PM
Subject: Re: A89: HW1, HW2, and HW3?
>
> I would say you have a HW1 calc with a different bootloader then the other
HW1
> calcs. Maybe TI tried to solve all their problems with HW1 with just
changeing
> the bootloader, and then, realized that they couldn't fix it all with just
that,
> and released another HW-version.
> I have still not seen a HW2 calc, and noone has yet wanted to send me a
scan of
> one, But my personal guess is that they don't differ much, and most of the
> difference is in the chip U8, wich is a chip with programmable logic, that
> handles flashprotection and stuff like that.
> about the free flash. The difference between 720884 and 1024*704 is only
12
> bytes. 704k is 11 pages.
> probably thoose 12 bytes is some kind of reserved bytes, or they are bad
bytes
> that you cant use.
> I think more of the first alternative. anyway, it isn't much to talk about
:)
>
> //Olle
>
> Scott Dial wrote:
> >
> > Would someone like to check my math for me here. On my memory screen I
> > have "Flash ROM free 720884".
> > Now check my math here... 720884 bytes / 1024 = 703.98828125k (which is
> > impossible since they are 64k pages which means it is actually 704k).
> > Btw, Bryan that means it 702k is highly unlikely they wanted flash apps
> > to line up with flash rom pages. Anyways, the question is this... name
> > my hardware version and guess with ams came on my calc? Anybody who
> > thinks they know is WRONG! My calculator is a "supposed" HW1 (explained
> > later) and it came with ams1.00. HW1 should have 384k I thought... go
> > figure, and grayscale works perfectly. Does anyone else have a HW1.5
> > like me??? There has to be a 3rd hardware version, with 1 inbetween what
> > we call HW1 and HW2. I believe this to be true because AU doesn't work
> > with my calc, and yet mine display characteristic of a HW1. To be more
> > specific with what exactly my calc's version is it came AMS1.00 and on
> > the flash upgrade screen it reports Boot 1.05 build 15. I believe this
> > version to be when they changed the chip to provide better security on
> > the flash rom, but hadn't changed anything further. If I am just stupid
> > please tell me so! This just doesn't make sense! If anyone thinks I am
> > full of shit then I will have to break out my digital camera and capture
> > some pics to prove it to you.
> >
> > --
> > Scott "_Wrath_" Dial
> > wrath@calc.org
> > ICQ#3608935
> > TimeCity AI Guy II - www.timecity.org
> > Member of TCPA - tcpa.calc.org
> > __________________________________________
> > NetZero - Defenders of the Free World
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>
>
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