LCC for the Gigatron. Take two.

Using, learning, programming and modding the Gigatron and anything related.
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lb3361
Posts: 360
Joined: 17 Feb 2021, 23:07

Re: LCC for the Gigatron. Take two.

Post by lb3361 »

Releasing GLCC-RELEASE-1.1

This new version has a complete ANSI C 89 library with the trigonometrics and hyperbolic functions that were missing from 1.0.

It is available from the github page https://github.com/lb3361/gigatron-lcc.

Thanks to axelb, it now compiles under Windows using either cygwin or mingw64.

Linux and Mac users are simply encouraged to clone the directory and follow the instructions of the README.md file.

Todo: cmake...
Last edited by lb3361 on 01 Sep 2021, 21:42, edited 1 time in total.
lb3361
Posts: 360
Joined: 17 Feb 2021, 23:07

Re: LCC for the Gigatron. Take two.

Post by lb3361 »

Gigatron LCC for Windows

Porting GLCC to Windows has several aspects. Besides compiling the GLCC executables for Windows and ensuring that invoking the command `glcc` or `glink` finds the correct version of Python, we also need to consider which supporting commands are available to a programmer writing Gigatron programs with GLCC. Under Unix, a programmer can rely on a`make` command and on many standardized commands to manipulate and process files. Under Windows, similar facilities exists but are different or sometimes require installing other packages. One solution is simply to install Cygwin https://www.cygwin.org. Thanks to axelb, GLCC can be built, installed, and used under Cygwin just like one builds it, install it, or use it under Unix. The only problem is that what was built in Cygwin remains in Cygwin. For instance, there is no easy way to execute such a version of GLCC from the Windows command line. Everything has to happen from the Cygwin command line.

Many readers of this post have already installed Git for Windows (https://gitforwindows.org). It turns out that Git for Windows comes with a very stable and very well optimized suite of Unix-like tools, derived from MSYS2, and accessible through the "Git Bash" start menu item. Since they are already on your system, why not providing GLCC for Windows as an addon?

Prerequisites: Installation and usage:
  • Download the attached file `glcc-1.3.zip` and extract it somewhere, for instance in `c:\glcc`.
  • To use GLCC from the Windows command line, open a command window (cmd.exe), and add `c:\glcc\bin` to the search path with the following command. You can then invoke `glcc`, `glink`, and `gtsim` in this window.

    Code: Select all

    C> path c:\glcc\bin;%PATH%
    
  • To use GLCC from the Git Bash, open a Git Bash window and add `/c/glcc/bin` to the search path with the following command. You can then invoke `glcc`, `glink`, and `gtsim` directly. You can also use `git` or any of the many unix-like commands available in Git bash. You can even invoke `make` because /c/glcc/bin also contains a Mingw version GNU-Make (https://packages.msys2.org/package/ming ... po=mingw32).

    Code: Select all

    joe@machine MINGW32 /Users/joe
    $ PATH=/c/glcc/bin:$PATH
    $ alias glcc=glcc.cmd
    
    For instance you can directly compile versions of the horizon program by simply invoking the command `make`.
    No need to change anything.

    Code: Select all

    joe@machine MINGW32 /Users/joe
    $ cd /c/glcc/stuff/horizon
    
    joe@machine MINGW32 /c/glcc/stuff/horizon
    $ make
    glcc -map=32k,./horizon.ovl --no-runtime-bss-init -rom=v4 horizon.c -o horizon-v4.gt1
    glcc -map=32k,./horizon.ovl --no-runtime-bss-init -rom=v5a horizon.c -o horizon-v5a.gt1
    glcc -map=32k,./horizon.ovl --no-runtime-bss-init -rom=at67x horizon.c -o horizon-at67x.gt1
    
    joe@machine MINGW32 /c/glcc/stuff/horizon
    $ ls -l
    ...
    
The main issue is that compiling this version of GLCC for Windows can be involved. The simplest solution is in fact the install the 32 bits version of the Git for Windows SDK" which contains all that is needed and much more.

[Update] We now have a CMake version that makes it *theoretically* possible with any compiler including Microsoft's MSVC.

[Update] I'll periodically update the Windows binary in this post to keep it current.
Attachments
glcc-2.2.49.zip
(1.66 MiB) Downloaded 8 times
glcc-1.5.zip
(1.47 MiB) Downloaded 118 times
glcc-1.4.zip
(1.44 MiB) Downloaded 141 times
glcc-1.3.zip
(1.43 MiB) Downloaded 222 times
Last edited by lb3361 on 02 Jan 2024, 13:14, edited 5 times in total.
veekoo
Posts: 121
Joined: 07 Jun 2021, 07:07

Re: LCC for the Gigatron. Take two.

Post by veekoo »

Now that GLCC is updated recently, how can I see the version of my installed files?
I am using virtual Ubuntu linux as enviroment.
lb3361
Posts: 360
Joined: 17 Feb 2021, 23:07

Re: LCC for the Gigatron. Take two.

Post by lb3361 »

veekoo wrote: 17 Sep 2021, 04:39 Now that GLCC is updated recently, how can I see the version of my installed files?
I am using virtual Ubuntu linux as enviroment.
Ooops. Good question. I should have a version string and a change log somewhere :-)

In the mean time you can try `glcc -v` to know when the code was compiled.

Code: Select all

$ glcc -v
/c/glcc/lib/gigatron-lib/lcc -v
lcc: (compiled on Sep 14 2021)
[Update] I've just added two things into the git repository:
  • A file `GLCC.log` describing the changes (https://github.com/lb3361/gigatron-lcc/ ... r/LOG.glcc)
  • A new option `-V` in glcc and glink to report the version.

    Code: Select all

    $ glcc -V
    GLCC_RELEASE_1.3-3-gf8c3d76
    
    The version is reported from command `git-describe --tags`. For instance the above version string means
    that the running version is 3 commit ahead of tag `GLCC_RELEASE_1.3` at commit `f8c3d76...`
lb3361
Posts: 360
Joined: 17 Feb 2021, 23:07

Re: LCC for the Gigatron. Take two.

Post by lb3361 »

Release 1.4 of the Gigatron C Compiler

This new release has lots of little changes and bug fixes.
  • A more compact and more customizable console code. The screen geometry can be changed by overriding the data structure console_info and the function _console_reset(). The recognized control characters can be changed by overriding _console_ctrl().
  • A slightly more compact code for formatted output (a.k.a. printf).
  • A new function cprintf() that prints formatted output to the console, bypassing stdio. Using this function costs about 2KB but saves 2KB over using printf and importing all the stdio machinery.
  • A new option --frags that shows how the program elements fit in the Gigatron memory.
  • A simplified _start which reduces the library overhead for simple programs.
  • Wrappers for more SYS_ functions.
  • Lots of bug fixes.
LInux and Mac users are invited to clone the main repository https://github.com/lb3361/gigatron-lcc.
Windows users can also use the attached pre-compiled binaries.

Note: the compiler can generate code for an earlier version of at67's ROM with new vCPU instruction. However the current version of this ROM has been substantially improved in partially incompatible ways. I will update the compiler once the ROM is released.
Attachments
glcc-1.4.zip
(1.44 MiB) Downloaded 185 times
veekoo
Posts: 121
Joined: 07 Jun 2021, 07:07

Re: LCC for the Gigatron. Take two.

Post by veekoo »

Question about compiler. I have this lotto simulation program and I tested it with GCC in Linux. Worked fine, but GLCC is unable to compile it. Anything to fix here? Some point there was too little memory for program.

Code: Select all

 ./build/glcc ../CODE/lottosimu.c -o ../CODE/lottosimu.gt1
cpp: ../CODE/lottosimu.c:7 Syntax error in #include
cpp: ../CODE/lottosimu.c:8 Syntax error in #include

Code: Select all

/*----------------------------------------------------------------------+
 |                                                                      |
 |     lottosimu.c -- demonstrate lotto number simulation               |
 |                    / quick and dirty Eurojackpot                     |
 |                                                                      |
 +----------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>

void main() 
{ 
  int b0[5],bb[5],i,ii,total,game,cash,sw,saldo,jp,it;
  int bt0[2],bbt[2];
  int totalbt,eit,egame;
  int sil; //printout silence mode
  int cup; //cupoung silence mode  
 
  printf("\nEurojackpot simulation: "); 
  printf("\nEnter number of iterations 1-100000: ");
  scanf("%d",&eit); 
  printf("\nEnter number of game rounds 1-3380: ");
  scanf("%d",&egame); 
  printf("\nPrintout silence mode 0/1: ");
  scanf("%d",&sil); 
  printf("\nCupoung silence mode 0/1: "); 
  scanf("%d",&cup);

  for(it=0;it<eit;it++) //iterations 1-100000
  {
    cash=0;

    for(game=0;game<egame;game++) //game rounds how many weeks 1-3380   
    {

/*----------------------------------------------------------------------+
 |                                                                      |
 |                                                                      |
 |                Eurojackpot - input rows                              |
 |                                                                      |
 +----------------------------------------------------------------------*/ 
 
/*----------------------------------------------------------------------+
 |                                                                      |
 |                                                                      |
 |                Eurojackpot - input row 1                             |
 |                                                                      |
 +----------------------------------------------------------------------*/  
  
      sw=0;
      //printf("\nEnter eurojackpot numbers 5pcs 1-50 R1: "); 
      for(i=0;i<5;i++) 
      { 
        b0[i]=rand() % 50 +1;  
        for(ii=0;ii<5;ii++) 
        {   
          if(b0[ii] == b0[i] && (ii != i)) sw=1;
        }
        if(sw==1){ 
          i--;
          sw=0;
        }
      }
      sw=0;
      //printf("\nEnter eurojackpot starnumbers 2pcs 1-10 R1: "); 
      for(i=0;i<2;i++) 
      {
        bt0[i]=rand() % 10 +1;
        for(ii=0;ii<2;ii++) 
        {  
          if(bt0[ii] == bt0[i] && (ii != i)) sw=1;
        }
        if(sw==1){ 
          i--;
          sw=0;
        }
      }
  
      if(cup != 1) printf("\nEurojackpot R1:\t\t\t %d + %d + %d + %d + %d * %d + %d\n",b0[0],b0[1],b0[2],b0[3],b0[4],bt0[0],bt0[1]);
   
/*----------------------------------------------------------------------+
 |                                                                      |
 |                                                                      |
 |                Eurojackpot - input right row                         |
 |                                                                      |
 +----------------------------------------------------------------------*/  
      sw=0;
      //printf("\nEnter winning eurojackpot numbers 5pcs 1-50: "); 
      for(i=0;i<5;i++) 
      { 
        bb[i]=rand() % 50 +1;
        for(ii=0;ii<5;ii++) 
        {     
          if(bb[ii] == bb[i] && (ii != i)) sw=1;
        }
        if(sw==1){ 
          i--;
          sw=0;
        }
      }
      sw=0;
      //printf("\nEnter winning eurojackpot starnumbers 2pcs 1-10: ");
      for(i=0;i<2;i++) 
      {
        bbt[i]=rand() % 10 +1;
        for(ii=0;ii<2;ii++) 
        {  
          if(bbt[ii] == bbt[i] && (ii != i)) sw=1;
        }
        if(sw==1){ 
          i--;
          sw=0;
        }
      }
  
      if(cup != 1) printf("\nEurojackpot winning row:\t\t\t %d + %d + %d + %d + %d * %d + %d\n",bb[0],bb[1],bb[2],bb[3],bb[4],bbt[0],bbt[1]);

/*----------------------------------------------------------------------+
 |                                                                      |
 |                                                                      |
 |                Eurojackpot - output results                          |
 |                                                                      |
 +----------------------------------------------------------------------*/

      jp=rand() % 80000000 + 10000000; //jackpot 10-90 milj. euro

/*----------------------------------------------------------------------+
 |                                                                      |
 |                                                                      |
 |                Eurojackpot - output row 1                            |
 |                                                                      |
 +----------------------------------------------------------------------*/

      total=0;  
      for(i=0;i<5;i++) 
      { 
        for(ii=0;ii<5;ii++) 
        { 
          if(bb[i]==b0[ii])
          { 
            total++;
          }
        }  
      }
      totalbt=0;
      for(i=0;i<2;i++) 
      { 
        for(ii=0;ii<2;ii++) 
        { 
          if(bbt[i]==bt0[ii])
          { 
            totalbt++;
          }
        }  
      }   
      
      if(cup != 1) printf("\nEurojackpot numbers correct R1:\t\t\t %d * %d\n",total,totalbt);
      if(total==5 && totalbt==2) {
      cash=cash+jp;
      if(sil != 1) printf("\nEurojackpot\t\t\t %d euro win\n",jp);
      }
      if(total==5 && totalbt==1) {
      cash=cash+500000;
      if(sil != 1) printf("\nEurojackpot 500 000 euro win\n");
      }
      if(total==5 && totalbt==0) {
      cash=cash+100000;
      if(sil != 1) printf("\nEurojackpot 100 000 euro win\n");
      }
      if(total==4 && totalbt==2) {
      cash=cash+4200;
      if(sil != 1) printf("\nEurojackpot 4200 euro win\n");
      }
      if(total==4 && totalbt==1) {
      cash=cash+240;
      if(sil != 1) printf("\nEurojackpot 240 euro win\n");
      }
      if(total==4 && totalbt==0) {
      cash=cash+100;
      if(sil != 1) printf("\nEurojackpot 100 euro win\n");
      }
      if(total==3 && totalbt==2) {
      cash=cash+60;
      if(sil != 1) printf("\nEurojackpot 60 euro win\n");
      }
      if(total==2 && totalbt==2) {
      cash=cash+20;
      if(sil != 1) printf("\nEurojackpot 20 euro win\n");
      }
      if(total==3 && totalbt==1) {
      cash=cash+18;
      if(sil != 1) printf("\nEurojackpot 18 euro win\n");
      }
      if(total==1 && totalbt==2) {
      cash=cash+10;
      if(sil != 1) printf("\nEurojackpot 10 euro win\n");
      }
      if(total==2 && totalbt==1) {
      cash=cash+8;
      if(sil != 1) printf("\nEurojackpot 8 euro win\n");
      }
  
/*----------------------------------------------------------------------+
 |                                                                      |
 |                                                                      |
 |                Eurojackpot - reports                                 |
 |                                                                      |
 +----------------------------------------------------------------------*/
 
      saldo = cash - game * 2 -2;

      if(sil != 1 && saldo > 1) printf("\nEurojackpot game round, win, 1 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 10) printf("\nEurojackpot game round, win, 10 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 100) printf("\nEurojackpot game round, win, 100 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 1000) printf("\nEurojackpot game round, win, 1 000 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 10000) printf("\nEurojackpot game round, win, 10 000 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 100000) printf("\nEurojackpot game round, win, 100 000 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 1000000) printf("\nEurojackpot game round, win, 1 000 000 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 10000000) printf("\nEurojackpot game round, win, 10 000 000 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
      if(sil != 1 && saldo > 100000000) printf("\nEurojackpot game round, win, 100 000 000 euro saldo:\t\t\t %d+%d+%d\n",game,cash,saldo);
    }
 
    //if(saldo > 1000000) 
    printf("\nEurojackpot iteration, game round, win, saldo:\t\t\t %d + %d + %d + %d\n",it,game,cash,saldo);
  }
}  
veekoo
Posts: 121
Joined: 07 Jun 2021, 07:07

Re: LCC for the Gigatron. Take two.

Post by veekoo »

Seems there was some invisble chracter in text. Cleaned everything with nano editor and got off syntax errors.
Now it seems using printf and maybe scanf eats too much memory.
I made one version without any output printf and was able to compile it to romv5a, but it didn\t compile to romv4.
There was some notes in github/lb3361 about doing this low level to save memory.
I tried some of console functions. Pretty clear how to output strings or chars, but what about numbers...lets say 1234?

Code: Select all

#include <stdio.h>
#include <stdlib.h>
#include <gigatron/console.h>

void main()
{
  int b0[5],bb[5],i,ii,total,game,cash,sw,saldo,jp,it;
  int bt0[2],bbt[2];
  int totalbt,eit,egame;
  int sil; //printout silence mode
  int cup; //cupoung silence mode

  console_state.cx = 0;
  console_state.cy = 0;
  console_state.fgbg = (((48-48)*6+1) & 0x3f) << 8;
  console_print("Eurojackpot simu:", 17);
  
  console_state.cx = 0;
  console_state.cy = 1;
  console_state.fgbg = (((48-48)*6+1) & 0x3f) << 8;
  console_print("Nbr of iterations:", 20);

  scanf("%d",&eit);
 
  console_state.cx = 0;
  console_state.cy = 2;
  console_state.fgbg = (((48-48)*6+1) & 0x3f) << 8;
  console_print("Nbr of games:", 20);
  
  scanf("%d",&egame);
  
  console_state.cx = 0;
  console_state.cy = 3;
  console_state.fgbg = (((48-48)*6+1) & 0x3f) << 8;
  console_print("Printout silence 0/1:", 21);  
  
  scanf("%d",&sil);
  
  console_state.cx = 0;
  console_state.cy = 4;
  console_state.fgbg = (((48-48)*6+1) & 0x3f) << 8;
  console_print("Cupoung silence 0/1:", 20);
  
  scanf("%d",&cup);

  for(it=0;it<eit;it++) //iterations 1-100000
  {
    cash=0;

    for(game=0;game<egame;game++) //game rounds how many weeks 1-3380
    {
      sw=0;

      for(i=0;i<5;i++)
      {
        b0[i]=rand() % 50 +1;
        for(ii=0;ii<5;ii++)
        {
          if(b0[ii] == b0[i] && (ii != i)) sw=1;
        }
        if(sw==1){
          i--;
          sw=0;
        }
      }
      sw=0;

      for(i=0;i<2;i++)
      {
        bt0[i]=rand() % 10 +1;
        for(ii=0;ii<2;ii++)
        {
          if(bt0[ii] == bt0[i] && (ii != i)) sw=1;
        }
        if(sw==1){
          i--;
          sw=0;
        }
      }

      //if(cup != 1) printf("\nRow1:%d+%d+%d+%d+%d*%d+%d\n",b0[0],b0[1],b0[2],b0[3],b0[4],bt0[0],bt0[1]);
      sw=0;

      for(i=0;i<5;i++)
      {
        bb[i]=rand() % 50 +1;
        for(ii=0;ii<5;ii++)
        {
          if(bb[ii] == bb[i] && (ii != i)) sw=1;
        }
        if(sw==1){
          i--;
          sw=0;
        }
      }
      sw=0;

      for(i=0;i<2;i++)
      {
        bbt[i]=rand() % 10 +1;
        for(ii=0;ii<2;ii++)
        {
          if(bbt[ii] == bbt[i] && (ii != i)) sw=1;
        }
        if(sw==1){
          i--;
          sw=0;
        }
      }

      //if(cup != 1) printf("\nWinning row:%d+%d+%d+%d+%d*%d+%d\n",bb[0],bb[1],bb[2],bb[3],bb[4],bbt[0],bbt[1]);

      jp=rand() % 80000000 + 10000000; //jackpot 10-90 milj. euro
      total=0;

      for(i=0;i<5;i++)
      {
        for(ii=0;ii<5;ii++)
        {
          if(bb[i]==b0[ii])
          {
            total++;
          }
        }
      }
      totalbt=0;

      for(i=0;i<2;i++)
      {
        for(ii=0;ii<2;ii++)
        {
          if(bbt[i]==bt0[ii])
          {
            totalbt++;
          }
        }
      }

      //if(cup != 1) printf("\nNumbers correct Row1:%d*%d\n",total,totalbt);

      if(total==5 && totalbt==2) {
      cash=cash+jp;
      //if(sil != 1) printf("\n%d euro win\n",jp);
      }
      if(total==5 && totalbt==1) {
      cash=cash+500000;
      //if(sil != 1) printf("\n500 000 euro win\n");
      }
      if(total==5 && totalbt==0) {
      cash=cash+100000;
      //if(sil != 1) printf("\n100 000 euro win\n");
      }
      if(total==4 && totalbt==2) {
      cash=cash+4200;
      //if(sil != 1) printf("\n4200 euro win\n");
      }
      if(total==4 && totalbt==1) {
      cash=cash+240;
      //if(sil != 1) printf("\n240 euro win\n");
      }
      if(total==4 && totalbt==0) {
      cash=cash+100;
      //if(sil != 1) printf("\n100 euro win\n");
      }
      if(total==3 && totalbt==2) {
      cash=cash+60;
      //if(sil != 1) printf("\n60 euro win\n");
      }
      if(total==2 && totalbt==2) {
      cash=cash+20;
      //if(sil != 1) printf("\n20 euro win\n");
      }
      if(total==3 && totalbt==1) {
      cash=cash+18;
      //if(sil != 1) printf("\n18 euro win\n");
      }
      if(total==1 && totalbt==2) {
      cash=cash+10;
      //if(sil != 1) printf("\n10 euro win\n");
      }
      if(total==2 && totalbt==1) {
      cash=cash+8;
      //if(sil != 1) printf("\n8 euro win\n");
      }

      saldo = cash - game * 2 -2;

      //if(sil != 1 && saldo > 100) printf("\nGame,win,100 euro saldo:%d+%d+%d\n",game,cash,saldo);
      //if(sil != 1 && saldo > 1000) printf("\nGame,win,1000 euro saldo:%d+%d+%d\n",game,cash,saldo);
      //if(sil != 1 && saldo > 10000) printf("\nGame,win,10000 euro saldo:%d+%d+%d\n",game,cash,saldo);
      //if(sil != 1 && saldo > 100000) printf("\nGame,win,100000 euro saldo:%d+%d+%d\n",game,cash,saldo);
      //if(sil != 1 && saldo > 1000000) printf("\nGame,win,1000000 euro saldo:%d+%d+%d\n",game,cash,saldo);
      //if(sil != 1 && saldo > 10000000) printf("\nGame,win,10000000 euro saldo:%d+%d+%d\n",game,cash,saldo);
    }
      
    console_state.cx = 0;
    console_state.cy = 10;
    console_state.fgbg = (((48-48)*6+1) & 0x3f) << 8;
    console_print("Iteration,game,win,saldo:", 25);
    //printf("\n%d+%d+%d+%d\n",it,game,cash,saldo);
  }
}
Last edited by veekoo on 01 Feb 2022, 11:25, edited 1 time in total.
lb3361
Posts: 360
Joined: 17 Feb 2021, 23:07

Re: LCC for the Gigatron. Take two.

Post by lb3361 »

Recent compiler versions have "cprintf" in "console.h", which is far better than "printf". It bypasses stdio like "console_print" but can print numbers, etc. However, if you use scanf, you still bring stdio in your program. To read an integer, you can instead write a small routine that uses "console_readline" and "atoi" or "strtol".

Something like:

Code: Select all

...
#include <gigatron/console.h>
...
int readint(const char *prompt)
{
	char buffer[32];
	cprintf(prompt, strlen(prompt));
	console_readline(buffer, sizeof(buffer));
	return atoi(buffer);
}

void main() 
{ 
...
  cprintf("\nEurojackpot simulation: "); 
  elt = readint("\nEnter number of iterations 1-100000: "); 
...
You can also use option '-Wl-d' or '--frags' to see what's being compiled in.

Finally you can also use '-map=conx' to steal memory from the video buffer (just like msbasic). This doubles the usable memory on a 32k gigatron.
veekoo
Posts: 121
Joined: 07 Jun 2021, 07:07

Re: LCC for the Gigatron. Take two.

Post by veekoo »

Spot on advices! With minimal change to previous version I was able to fit it normal size. I compiled it to both romv4 and romv5a. The sizes were 11987 bytes vs 9542 bytes. Minor changes with layout might be in place otherwise it work same way as in LinuxPC
lb3361
Posts: 360
Joined: 17 Feb 2021, 23:07

Re: LCC for the Gigatron. Take two.

Post by lb3361 »

Two more remarks:
  • I believe that it would be better to consolidate the cprintf calls that are very similar. Otherwise you need to code many strings that are almost identical.
  • GLCC ints are only 16 bits long, that is 0 to 65535. To represent a 500000 jackpot you need to use "long int". The bad news is that using long ints substantially increases the code size.
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