Post your ideas for new miscellaneous programs here, or build on ideas posted by other visitors.

I was Wondering if anybody here had a robotics class:
cause i need a couple programs that can add vectors using trig..
thanx
<tweaker>

oh yeah does any body here play outwar on the .net?
if you do goto my web page and please click on the thug builder it will help

If you're using an '86, you can specify vectors as [x,y] or [x(angle symbol)y], and then add them like normal numbers. For example: [1,5]+[3,2]=[4,7]

I don't know why you would use vectors or calcs for robotics, but adding vectors is eazy:

Take the highths of the vectors and add them. Then take the widths of the vectors and add them. If the vector starts at the origin, hight=Y and width=X. If not, subtract the starting point of the vector from the end point.

Why would you want to use trigonometry for this? If you are working with polar vectors, just convert to coordinate. That uses some trig and the pythagorean theorem.

Let's make a port or clone of PedroM for the TI-83+ so that more people can use it. (Correction: You make a port. I don't know ASM.)

First order of buisness: Break the OS update signing system.

A version of VTI that can boot off a flopy on a PC would be nice. That way, people could take VTI to places where the computer administrators are parinoid about hacking. It could use the DOS system that anyone with windows can make, and then copy the VTI files onto. It could use an open operating system, such as Linux or Open DOS. It could have it's own Kernel.
I've noticed the VTI web site has been non-existant for a long time now.

Boot off a floppy? Couldn't you just copy it from the floppy to the PC, then run it?

Not if your school's tech people are parinoid and stupid.

You mean they won't allow you to copy TEMPORARY files to the hard drive for ~30 seconds? :-O

In most high schools it is official policy to not allow people to put data on C:\.

So VTI won't run directly from the floppy?

If there was enough space on the floppy to create system files and allocate space, and if that floppy had the other miscellaneous Windows resources that it needs, and if you were allowed to install it on the computer (the computer doesnt care what drive it is, it won't install a program-a hacker could simply partition their HDD), then VTI might work off of a floppy.

I've had run VTI off of a floppy several times. Although you need to watch the free space on the floppy, it'll work. There is enough space on a floppy for VTI and ONE set of ROM images and save states with the matching skin.

hey does anyone have any ideas how to do a chat program using the cord??

thanks

i may just be very out of the loop...

but does VTI offer ROMS via the USB type of ti computer cable? all of the options are for com ports or something.. i may just be clueless which happends alot too. is there a prog out there to make this work????

The last version made by Rusty doesn't feature a USB connectivity because the program was released before the cable. However, someone did release a new VTI. I can't say if this has it or not since it refuses to run on my computers.

do you have a link for the new VTI??? and what os are you using on your comp that it wont work??

-Tony

also, does any one know if there is there an updated ti graph-link software version that supports USB as well??

TI Connect. See link.

It is featured in the "Programs of the Year" article, just find it there.

As for my OS, it is XP with service pack 1.

What I want to know is this: how do you assembly programmers know
what memory to use for data/variables? Is there a way to see
what is available at one time? Or is there a way to have the
calc worry about it. HOW DO YOU ASM PROGRAMMERS KEEP TRACK OF
OR USE DYNAMIC DATA/VARIABLES?

One way is just to assign a dedicated hunk of memory to whatever you need, knowing that is will not be used. For example, one could use the leftover LCD memory (on the TI89) to store the variables.

I'd also probably give them nice names. Like this:

variable1 equ $5000

main:
...code here...
lea variable1,a0 ;now you can refer to variable1 with (a0)
...more code...

That's the way I use most often.

<Vx>

Wow. You could tell I just woke up by that first sentence. Let me rephrase it:

One way is just to assign an area of memory for whatever you need to a place that you know will not be used by other programs/AMS functions.

<Vx>

First, for knowing where to put variables, you can use certain areas which are unused by the OS or you can overwrite without damaging anything, like $ca00 on the '86. OR, THE EASIEST but least efficient way, you can insert a "(label): .db 0" into your code, and then you can store values to the address at (label) and retrieve them easily as with any normal memory location. You can put a second, or even third ".db 0" if you need more than 1 byte, or ".dw 0" if you want to reserve 2 bytes with one statement.

As for dynamic variables, we just make sure that there's enough space for the maximum length it could be (I assume you mean dynamic in LENGTH....).