TIGCC Programming

Tilemap Question

feeds@yuku.com (antiderivative) — Fri, 27 Nov 2009 20:58:14 GMT

Recently I've been trying to make a basic typical 2D side scroller game (like mario) using tilemap. The problem I've been having is speed. I have the program set so at every move the entire screen is redrawn. This is done for uniformity of speed for whenever or not the screen is scrolling. Drawing the Screen doesn't slow down the program too much, it's tilemap's DrawPlane function which is used to render the virtual screen according (x,y) coordinates into a pointer...

Grayscale Question

feeds@yuku.com (hotwheelharry) — Sun, 22 Nov 2009 07:09:28 GMT

Hello,

I was messing around with grayscale graphics and was wondering...
If I want to write directly to the LightPlane and then the DarkPlane by using pointers, do I have to call GraySetAMSPlane for each one when I write to it, or can I just do

char* Lp = GrayGetPlane(LIGHT_PLANE);
char* Dp = GrayGetPlane(DARK_PLANE);
Lp[ 0 ] = 0b01010101;
Dp[ 0 ] = 0b01010101;

Thanks

Keyboard Protected Memory Violation Error?

feeds@yuku.com (hotwheelharry) — Tue, 17 Nov 2009 05:15:09 GMT

I have a little pong program and everything works fine... except when I press the arrow keys.

I started the program by writing the part to handle the keys, and it worked fine. It worked fine until I finished the darn thing and then on the final build, I started to randomly get the protected memory violation error and the calculator crashes.

When I run the game, it works great and then as soon as I touch an arrow key, it explodes.
Strangely enough, it explodes when I...

where did I fail ?

feeds@yuku.com (jokerman) — Sun, 15 Nov 2009 21:40:26 GMT

Hi again pros.

Finally got the code on my TI, but there I type prgram() and the result is: "Done"..

Do I need to add anything special so that it is compile properly ? Like TIGCC headers ?

This is the code, just a simple to test funcionality:

#include

int main (void) {
int volume, l, b, h;
printf("calculating volume\n");
printf("length: ");
scanf("%i",&l);
...

Beginners question on Dynamic Memory Allocation

feeds@yuku.com (jeff22) — Tue, 10 Nov 2009 11:25:24 GMT

I understand the principle of using DMA at runtime, when a user inputs data.

What I'm struggling with is if a program needs an array of data to run, is...

The Amazing Coin Flipper!

feeds@yuku.com (zonedabone) — Tue, 10 Nov 2009 03:32:28 GMT

Here's the newest code!

#include 
#include 
void _main(void) {
    randomize();
    OSEnableBreak();
    int long unsigned heads = 0, count, loop;
    count = GetIntArg (top_estack);
    for (loop = 0; loop < count; loop++) {
        heads += random(2);
        if(OSCheckBreak()) {
            exit(180);
        }
    }
    clrscr();
    printf("Flipped: %ld\n", loop);
    printf("Heads:   %ld\n", heads);...

Battery checker bits?

feeds@yuku.com (Fred Foobar) — Sat, 07 Nov 2009 20:09:06 GMT

Which address is used to set the battery checker bits on HW2? j89hw.txt says it's at $70001D:

$70001D RW ($06)

    :7    Toggles every FS (every time the LCD restarts at line 0)
    :6-4    -
    :3    Battery checker bit B (? ???)
    :2    ? (set)
    :1    Screen enable (clear this bit to shut down LCD)
    :0    Battery checker bit A (? enable $600000:2)
    (AMS:) The battery checker bits must both be set (AB=11) prior to
    checking the voltage level with $600000:2....

Size of inodes?

feeds@yuku.com (Fred Foobar) — Thu, 29 Oct 2009 22:22:54 GMT

I have a design decision to make in Punix. I'm still writing the filesystem code, and at this point I'm trying to decide how big to make an inode as stored on FlashROM. For those who are not familiar with inodes, they are the file header that contains at least the following information in Un*x:

mode and type of file (2 bytes)
number of links to file (1 byte)
file size (number of bytes in file) (3 bytes)
owner's user id (2...

Screen Size Question

feeds@yuku.com (jeff22) — Mon, 26 Oct 2009 13:59:03 GMT

At the moment I'm reading up on Graphics and Display in the TIGCC Documentation and have this question.

File I/O on Titanium

feeds@yuku.com (Kirk Stapler) — Tue, 20 Oct 2009 22:24:00 GMT

I have TIGCC 0.95 and TIEMU 3.02, TI89Titanium_OS.img TI 89t 3.10
I have a TI-89 Titanium with the same O/S image loaded on it.

I have some programs that do an ordinary fopen and some rather ordinary reads from a data file that is in the "Third Party Data" variable format.

No problems in the emulator, with or without hw3patch.

The fopen causes an "Address Error" on the physical Titanium, with or without hw3patch.

Do I need one...

Modularity and the TI Platform

feeds@yuku.com (Pixel) — Wed, 07 Oct 2009 08:52:55 GMT

Modularity is of course a very important computer design philosophy. It allows for code reuse and organization, as well as being typically more efficient and less buggy. But sometimes the implementation of modularity on the TI platform can be awkward, as it is an environment where every byte counts.

My programs use an uncommon way of error handling. At any point of the program, if it encounters a fatal error it will set my error message global variable to something useful and then...

Maths Question

feeds@yuku.com (jeff22) — Tue, 06 Oct 2009 10:13:26 GMT

The following code, I beleive, should calculate the square root of 25
as equal to 5.
However variable a is displayed as 1.58105 ....
and variable b is displayed as 25

(As displayed using TiEmu emulator)

I expect there is an obvious reason

Thanks
Jeff

#include
#include

void _main(void) {
float m,a,b;

m = 25;
...

where is the memory leak?

feeds@yuku.com (dieter s) — Sun, 04 Oct 2009 09:38:41 GMT

Hi everyone!
I have written a kbdprgm1( ) which problematic code can reduced as follows:

void _main(void)
{
TRY
TRY
ER_throw(SYNTAX_ERROR ); //

FINALLY
;
ENDFINAL
;
ONERR
;
PASS;

ENDTRY
}

Calling this kbdprgm1( ) by pressing the Diamond-key and it's number, will lead to a memory-difference of 24 "RAM free"-bytes. The mem-difference is the difference...

Can functions pass arrays?

feeds@yuku.com (jeff22) — Tue, 29 Sep 2009 14:40:26 GMT

A real newbie question, hope it make sense
I've tried the following code but it does'nt work.

void fuction1(void) { 
  double array[4]; 
 
  array = fuction2 (void);
 
} 
 
 
 
double fuction2 (void) { 
  double array 4];
       
  array [0] = 50;
  array [1] = 50;
  array [2] = 80;
  array [3] = 50;
 
  return array[4];
 
}

I'm thinking if arrays cannot be passed by functions, I use need to use pointers, but really not sure

[EDIT by...

Beginners Question

feeds@yuku.com (jeff22) — Mon, 28 Sep 2009 12:49:36 GMT

New to this forum, hello to all

Just trying to get with C Programming, and have done a few tests using TiEmu emulator

What I wanted to know was are their header files containing matrix calculation functions similar to those in TI Basic, like mRow, mRowAdd, or do you need to write you own functions for matrix calculation.

Thanks
Jeff

HomeExecute

feeds@yuku.com (Kirk Stapler) — Sun, 27 Sep 2009 12:31:16 GMT

I have a set of programs that are too big for 64k.
They don't need to know about each other, so I made
a menu program that runs the others using HomeExecute,
passing just one parameter..

sprintf(cmdstring, "%s(%u)", progname, menu_request);
len_of_cmd = strlen(cmdstring);
ClrScr();
HomeExecute(cmdstring, len_of_cmd);
TestLabel02:
ClrScr();

This works fine, for a while. Sooner or later, sooner if...

Not grabbing data from struct array.

feeds@yuku.com (atarijedi) — Fri, 24 Jul 2009 05:35:56 GMT

My program is for the Voyage 200 and I am using TiEmu and the OS image from Ti.

Ok so I am trying to build a periodic table program. I have built a typedef struct that will hold element data, as well as position data for each cell. I only have 2 elements in it so far, Hydrogen and Helium, however when I try and draw the cell for Helium (index 1), nothing happens, Hydrogen (index 0) works fine though.

I can't seem to figure out what is wrong. Here is a copy of my code...

Reference to TI variable as argument

feeds@yuku.com (Zochor) — Mon, 29 Jun 2009 09:32:35 GMT

Could anyone tell me if it is possible for a C program to accept a reference to a TI variable as an argument rather than its value when called from TI-Basic?
The same as TI's InputStr and StoPic, or are those just special cases?

AI1 Frequency

feeds@yuku.com (lachprog) — Mon, 22 Jun 2009 20:20:26 GMT

Hello, world! I've read somewhere that AUTO_INT_1 runs at 256 Hz on ALL HW / AMS versions, is that correct?

How do I use the cmd_circle command in TIGCC?

feeds@yuku.com (bert) — Fri, 12 Jun 2009 01:48:19 GMT

Hi,

Can't get the following to work (get error message "unresolved referrence to cmd_circle"). Can you steer me in the right direction?

#define SAVE_SCREEN
#define USE_TI89
#include
#include

void _main(void)
{
clrscr();
cmd_circle(30,30,20,1);
ngetchx (); // wait for a keypress
}

Regards,

Bert van den Berg...