Quote from: calcdude84se on September 20, 2010, 09:13:18 pm

Quote from: Quigibo on September 19, 2010, 05:54:16 pm

Well apparently the buffer where the input string is stored is not a temporary variable so a bcall to _CleanAll doesn't clear it.  I will have to find the name of that string.  The buffer for the input is named "-" and I've seen a "#" and "$" so I'm guessing it's something similar to that.

There isn't a way to fix the memory leaks since this is an OS call.

As you are probably aware, there is a leak-free (or less so) version of _GetKey, undocumented and called _GetKeyRetOff
I wonder if something similar exists for the input bcall...
Good luck making it work!

If it's undocumented, does it means it won't work on the Nspire, though? I think Quigibo is aiming for full Nspire compatibility with the exception of the Full command.

Nah, this is an undocumented OS call, which is different from an undocumented Z80 instruction. It should work just fine.

Ah ok, I was a bit worried.

Also,

1000->X
Pause X

crashes Kindermoumoute's calc. Could this be a bug on certain calc models or could it be his calc that is defect?

Just crash when X=0

Oh ok, well in that case it's because 0= a pause of 65535, 1000=999, etc. Basically, to do a Pause that lasts nothing, you would need to do Pause 1. 65535 causes your calc to freeze for almost one minute, I think.

This is correct.

Me too, but I decided to wait. It turned out to be a good idea.

DJ, to be technically correct, 0 is a pause of 65536, 1000 is a pause of 1000, and so on

Whoops yeah, that's technically right as it decrements first and then checks, still allowing all numbers to be the same except 0.   

Hm... let me try elaborating on what ztrumpet said.
"This code acts like Axe 'Pause ', taking X for the amount. However, 15, not 65535, is the upper bound.
Lbl S
X-1+16not(X->X
If not(X
Goto SSo, if X starts as, say, 2, the first line after "Lbl S" will set X to 1. Since X is not 0, it will go back to that line, and decrement it to 0. Since it is now 0, it does not "Goto S", finishing the routine. Note that it ran the loop 2 times. (decrement to 1, decrement to 0)
However, if X starts as 0, the line "X-1+16not(X->X" will set X to 15. 15 is not 0, so it will "Goto S" and proceed to loop 15 more times for a total of 16. Put a counter C, initialized to 0, in the loop and see for yourself, like this:
0->C
Lbl S
X-1+16not(X->X
C+1->C
If not(X
Goto S
Disp C

If you want to look at it that way, then sure . The main point is that it checks at the end of the loop, after it's already been decremented, and not at the beginning.