Fusion_C and HTIMI

Yes, sure.

I've changed because I don't think H.TIMI is a good choice for an example / library code for interrupts, let's say someone has an interface and want to create a C program that works with that interface interrupt, H.TIMI will not work, but if someone wants to use the VDP 60Hz interrupt, they can just check if the interrupt came from VDP, like Fusion-C example does.

Ok it works better.
But ... It seems all Keyboard input functions do not work well when this interrupt is on.
All Inkey(), WaitKey(), GetKeyMatrix() functions do not received values... Is it normal ?

Yeah, by reading S0 you clear the interrupt status and keyboard is not read by bios/dos anymore, this should be done only if you are substituting the whole interrupt. This is not an issue of the hook, but of what is being done by the example during the hook.

thank you ducasp

Hello

I just find another way to init an interrupt handler.
Using the MSX-DOS INT38

After some testing, it seems it do does not work properly with other big ASM routines like FX or PT3 Players, But perhaps theses routine must be tweak for this purpose ?

what do you think of this all-specialists ?

#include "fusion-c/header/msx_fusion.h"
#include 


unsigned int * vector;                          // Define a pointer


static unsigned int count = 0;

/* --------------------------------------------------------- */
void my_interrupt( void ) __critical __interrupt
{
  count++;  
}

/* --------------------------------------------------------- */
int main( void ) {
  unsigned int prev_count;
  unsigned int saveVector;

  saveVector=(*(unsigned int *)0x0039);        
 
  vector = (unsigned int *) 0x0039;      // Assign the pointer to the Dos Int38


  Cls();

  printf("DOS Interrupt test, hold ESC to exit...\r\n");
  
  *vector = (unsigned int) my_interrupt;   // Modify the pointer to go to my ow,n routine

  prev_count = 0;
  while( prev_count < 600 ) {
    
     if (prev_count != count)
     {
     
        prev_count = count;
     
        Locate(10,2);
        printf( "%d\n\r", prev_count );     

     }
     if (Inkey()==0x1b)
           break;
  }

  *vector = (unsigned int) saveVector;    // REturn to Normal Interrupt

  Locate(1,3);
  printf("Done!\r\n");
  Exit(0);
}