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Re: A92: Re: TI-89 Screen size and FLASH memory
I believe he has it right. I am not assigned to the 89, but I
have seen the units, and that is what it seems to look like. In
a few weeks, I will be moving on to the NGI segment of the
business (non-graphing instructional, like the 36, 34, etc.),
so I may disappear from this list.
Shawn A. Prestridge
Texas Instruments, Inc.
Educational & Productivity Solutions
7800 Banner Drive MS 3908
Dallas, Texas 75251
(972) 917-1698
(972) 917-7103 FAX
"He's back... Kicking bottom or what?!?!" --Holly, Red Dwarf
diddy@apci.net on 03/15/98 06:54:45 AM
Please respond to assembly-92@lists.ticalc.org
To: assembly-92@lists.ticalc.org
cc: (bcc: Shawn Prestridge/TXN)
Subject: A92: Re: TI-89 Screen size and FLASH memory
>Hey Shawn,
>The Ti92 screen has 128x240 pixels
>The Ti89 will have only 100x160.
>How is this going to be resolved? What will happen if you write
>a program for the 92 and transfer it to the 89? what will it do if
>It tries to write off the screen? Nothing, I assume. It would be
>nice if you could have some way of making ALL 92 programs work
>on the 89 without much hassle.
>
> Another problem is writing ASM programs. I'm sure almost
>everyone who uses assembly would be very thankful if ASM
>programs written for the 89 would run flawlessly on the 92.
>This might be impossible, but it would be nice at least if you
>just had to recompile it. The main problem here (I think) would
>again be the screen size. My solution-- Reserve the same size
>memory block for the screen on the 89 as you do on the 92/92+.
>But only show part of it. Maybe this isn't feasable, but it sure
>would be nice.
>
>Another concern I have is about the flash memory. You said you
>had been working hard to make sure an errant ASM instruction
>couldn't wipe out the ROM. Are you going to allow a non-errant
>instruction to change it? Or will the only way to change it be
>through the link port? The main thing I'm concerned about is
>that I want to be able to update the ROM through my homemade
>link. TI doesn't have to support this in the graphlink software,
> but it would be nice if you could provide Information on how
>to write our own program that would do that, or at least make
>it easily hackable :)
>
> Daniel Plaisted
> -dsplaisted@bigfoot.com
>
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I'm not Shawn Prestidge but I may have an idea. Mayeb it will be like a
computer screen.. like how you get more screen room when you go from
640x480
to 800x600 but windows still looks the same... maybe it shrinks the pixels
down to the screen size, or the higher resolution is equal to that of the
92's. Just my two cents
ViRtUaL mAlFuNcTiOn