I think BuckeyeDude should examine those file formats, because it might be good that his emu supports this format.

And I did so. It appears that the flag and version fields were switched in the header. Basically if you take the file from the archive of your calc, one byte (the 69th one) is $80. The very next byte is the version. Your files had these bytes switched, so basically if you removed them from your calc archived, the calc wouldn't accept them because they believed that they were from a way newer version of the OS. Thus if they were taken from ram, (which just has the byte as 0) they work fine. I'll let lionel know, so he can check it.

Also dj thanks, but its definitely not my emu, i'm really only a maintainer. I dont want to steal jim and spencers credit

darl, what kind of game would you might be implementing it into?

Thanks!
I've tried to add a pause menu, but it's very glitchy and afterwards caused the screen to flash and do all this weird stuff.
As for the kind of game, I was thinking of making a sort of papijump clone in which the platforms disappear or something.
In the meantime, and in response to a few "how does this work" questions (mostly from school), I wrote this commented and working source that's only the actual movement engine.  I was thinking parts of it might be useful for an axe pinball game???

Come to think of it, I'll put up JETSRC3 anyway.  MATH is the problematic menu.  'Options' doesn't do anything.  'Quit' is what you should avoid.
CLEAR is still the quit key, or the "emergency exit" key if you tried the Pause→Quit action.
[^]now inverts the screen and does a wave effect from the "Wave Simulator-Sort of" thread
If you leave the program running without pressing any keys for about a minute, it will ask "You Still There?" and count down from 10, quitting on 0.
Also in V3 are minor bug and sprite fixes as usual

Edit..
I know a papijump thing wouldn't really need TI-OS picvars, but I'm still curious.
How can I do it?

[irrelevant]does anybody know where the sub( or th enew ref( rref( tokens are? or are they only in the Catalog?
[/irrelevant]

sub( is in the catalog, and is best accessed by going up from 'T'
ref( and rref( are in the matrix menu under math.

yeah pixel test is hard when you don't fall at one pixel rate. I got lot of troubles in my ball game

Also I tried your two programs and nice physics, but I had troubles exiting the new jet thing, also the menu cursor moved in opposite direction

Oh I did use Clear and it still happened

Darl181, "return" is the statement that does two things. it a) exits the subroutine it's currently in or b) if not in a subroutine, exits the program.

so if you have an If statement that jumps to a subroutine at the end of the program and expect the program to end, it won't, because they program is in a subroutine. so after the If statement becomes true, the program will jump to the subroutine (lbl E in this case) and then notice it's at the end of the program, so it'll assume "Return" has been placed there. from there, it will exit the subroutine, not the program. just the subroutine. so if you want to exit the program on an If statement, try this.

ReturnIf (EXP)

so if you wanted to exit the program when a user presses clear you could use
ReturnIf getKey(15)