// experi9b.c

#include <stdio.h>
#include <conio.h>
#include <malloc.h>
#include <time.h>
#include <dos.h>
#include <stdlib.h>
#include <string.h>

extern unsigned get_port(void);

main()
{
  unsigned ADC_Chan0,dac1,eoc;
  int count;
  char data[30000];

  ADC_Chan0 = get_port();

  if(ADC_Chan0 == 0)
  {
    printf("no hardware found\n");
    return;
  }

  dac1 = ADC_Chan0 + 8;
  eoc = ADC_Chan0 + 0x18;

  printf("ADC Channel 0 after get_port = %X\n",ADC_Chan0);

  while(!kbhit())
  {
    puts("Recording");
    disable();
    for(count=0; count<30000; count++)
    {
      outp(ADC_Chan0, 0); // start channel 0 conversion
      while(!(inp(eoc) & 0x80)); // wait for ready
      data[count] = (char)inp(ADC_Chan0);
    }
    enable();

    puts("Playing");
    disable();
    for(count=0; count<30000; count++)
    {
      outp(ADC_Chan0, 0); // start channel 0 conversion
      while(!(inp(eoc) & 0x80)); // wait for ready
      outp(dac1, data[count]); // put the data in the DAC
    }
    enable();

//    for(count=0; count<30000; count++)
//      printf("%4d",data[count]);
  }
}

// experi9b.c