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Re: A92: Re: TI-89 Screen size and FLASH memory
Because of different screen size, pie charts, lack of geometry funcions, etc, as
well as physical differences, I surmise that ti-89 will be significantly different
from ti-92+ in the way of rom/ram adresses, etc. I therefore don't believe that
the same program would run on both calcs unless an emulator of sorts is used.
Also, because of the way video memory works, adopting a program from 92 to 89 would
be rough since when it tries all those pixels that aren't there it will simply
corrupt memory. Anyway, everything will be garbled because the memory is linear,
not in "rows and columns".
Ritchie Argue wrote:
> >I think Daniel's point was that that wouldn't work. If everyone used 800x600
> >screens, and all of a sudden you wanted to fit everything from an 800x600
> >screen on a 640x480 screen, it wouldn't work. If it did, 800x600 and 640x480
> >would be the same. I was actually wondering the same thing when I read TI's
> >page, because I immediately wondered how it was all gonna work with a
> >different screen size. If you want to see what I mean, take a screenshot of
> >your desktop with some programs running at 800x600. Be sure to save it as a
> >bitmap to preserve the quality completely. Then use an image editor to shrink
> >it to 640x480, again as a bitmap. Then view it on your computer in 640x480
> >mode. If my reasoning is right, it won't look as good as it did under
> >800x600. Since the pixels on the 92/89 are much larger than those of a
> >computer monitor and those screens are pure black and white instead of color
> >or grayscale, this effect would be much more prominent, leading me to believe
> >that assembly programming across platform would be impossible because of
> >graphics reasons.
>
> I don't think that asm progs will be impossible, it'll just be like
> programming for a multisync, or different resolution screens on a computer
> - there'll be a global or 2 somewhere that you can read that'll tell you
> whether or not you're on a 92/92+, or what size the screen is. Then you
> just have to make 2 sets of graphics. Include an installer that works the
> same way as an installer for ppc/68k, and it can automatically choose the
> right graphics. The development time shouldn't be much longer, if you
> develop the images for the highest resolution possible and sample down, the
> touchup shouldn't be too hard. The only problem that I can see with a
> smaller screen is a smaller menu, but I imagine that it'll be handled in
> the same way as a long custom menu on the 92.
>
> Ritchie
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