Thank you. I didn't know you could use argv.
Well I think I'll just play around now and stop annoying you.
I'll come back if I have other questions or if I program anything worthwhile (not quite sure what I want to do for now).

I'm back...

* Use Wine to run nspire_emu on Linux

I followed the tutorial on hackspire (prefacing all comands with "wine"), the program starts but when I press I to load the os image it hangs. The same binaries work fine on Windows.

Apart from that I managed to use the real time clock and to write on the screen using a buffer (i made square that moves every second and bounces on the edges of the screen while fading away and then back, impressing isn't it ?). I think the crashes I got were caused by a memory leak (I accidentally deleted the code...).

I still have questions concerning time handling : if I program a slow paced game (board game or something like that) or a menu I understand I should call the idle function in the main loop to save power, is that the use of it ? Hackspire says "Changing the timer frequency have effects on the latency of this function. " : which timer is that, 0x900D0000 ?
I'd like to use one of the other timers as a more precise real-time clock (I don't care if it loops back to 0 at some point, the purpose is to handle framerate and keypad input with a more precise unit than "iterations").
I gather from hackspire I should : set 0x900D0014 to 0b11111, 0x900D0010 to 31, and read volatile uint16s from 0x900D000C. Does that work ?
Besides, it's written on hackspire that the timer is set to 100Hz but 10 ticks of 32kHz is 3200Hz, is the number false or didn't I understand something ?

Finally, are there any text drawing routines available ? Or should I just use a few dozen sprites ?
Also, does ti nspire computer link modify files or can a program read them just like it works on a pc ? (not that I plan to use it right now but it's worth knowing)

That's it, and thank you for all the answers which I don't doubt will come.

Hello, I've just started programming on TI-Nspire and I'd like to ask a few questions. I know there's documentation on hackspire but it's not always clear (such as, does this particular piece of information refer to ndless 1,2 or 3 etc), besides I don't know much about hardware and direct access to memory (I usually program in OCaml ).
So, here are my questions (for some of them I could just check the source code, I know):

• os.h seems to be the only necessary file to include. Is there anything else I might want to use or is the whole of libndls and the stdlib in os.h? A lot of programs have an "utils.h" include directive, but it isn't in the sdk - is it replaced by something else?
• Do you need to do something particular when entering/exiting the program (saving and restoring the screen, disabling some os function...)? All my test programs trigger a reboot in nspire_emu at exit...
• When should I use TCT_Local_Control_Interrupts (or anything related to interrupts)?
• Is there any graphics library available? or some project I could contribute to?
• (if the answer to last question is no) How to actually write on the screen? I suppose it is something like that (adding an extra pointer and a memcpy for double buffering):
  unsigned char * scr = (unsigned char*)SCREEN_BASE_ADDRESS;
  *(scr + /*some operation with ints x and y*/) = (unsigned char) color; //how are color coded, by the way?
• How do you get the time? I gather that you can get the time in seconds with:
  int time = *((volatile int*)0x90090000); //not sure about the types though
  Can you get a more precise value?
• Are ints 32 or 16 bits?
• Is there anything to do to have float support? I tried to compile a program with floats using yagarto and I got "undefined reference to __arm__addf" or something like that (I'm on Linux right now I can't check).
• Unimportant: Did anyone get nspire_emu or ncubate working on 64bits Linux? It crashes when you press I to load the os for me (but i have a dual boot, I don't really need it. Btw, the nspire-gcc script doesn't work out of the box on Ubuntu because packaged versions of gcc have a version number: the script looks for arm-linux-gnueabi-gcc (or ld etc) but it's arm-linux-gnueabi-gcc-4.5 (or 4.6), you've got to edit it manually.).
• Really unimportant: how do you change your profile with this forum?

That's about it, I know those are quite noobish questions but being noobish is my nature, I can't help it.