Re: TI-H: What's wrong with hw2?
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Re: TI-H: What's wrong with hw2?
Does anyone know, are there any advantages or beneficial changes in HW2?
-Noah
On Thu, 16 Dec 1999 03:51:16 +0100 Olle Hedman <oh@hem.passagen.se>
writes:
>
> hehe.. And how would they change the assembly syntax?
> It isn't ti who made that up you know, it is how the cpu in it
> works, and that
> is made by motorola and has been the same since 1984.
> What has changed is certain things in the peripherial circuits in
> the ti89. The
> chips that handle rom-protection and lcd updateing for example.
> The big problem with grayscale is that in hw1 you could have the
> screen-ram at
> any memoryposition (almost, a stepping by 8), but in hw2 you can
> only have it at
> certain memorypositions. (I don't remember the exact ones now) and
> they have
> also changed how the updateing of the screen works, makeing it quite
> a lot
> slower.
> Have you btw any idea at all how things like grayscale work on the
> calcs? Do you
> even know how a microprocessorsystem like the ti89 works? It doesn't
> sound like
> that on you guessings. Or maybe I just misunderstand what you are
> saying.
>
> //Olle
>
> Jefferson Chang wrote:
> >
> > Hi,
> >
> > I heard that most of the people complain about hw2 for not being
> able to
> > run
> > most of the games. Hmmm.... I'm wondering maybe TI has modified
> the
> > implemenation of the assembly coding for TI-89 (hw2) instead of
> disable
> > some of
> > the great features that the hw1 had (like grayscale?). If think
> about
> > it, why do
> > they need to disable those features in hw2? It brings no benefit
> for
> > them don't
> > you think so? Maybe the assembly syntax coding for hw2 is slightly
> > different in
> > order to make those missing features work (grayscale for example).
> Just
> > my
> > opinion ^_^
> >
> > Thanks.
>
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