#include <stdio.h>
#define MAXRAM 100
#define MAXAC  9999
#define CINCPROMPT ">"
#define VERSION   "2.1.3"
#define TRUE   1
#define FALSE  0

FILE *tty;


struct cardiac_s 
{
  unsigned int running; /* TRUE or FALSE to indicate running or not */
  unsigned int dump;    /* TRUE or FALSE to do dumps in each cycle  */
  FILE * IN;            /* Input device for Cardiac  */
  FILE * OUT;           /* Output device for Cardiac */
  unsigned int pc;      /* program counter */
  int ac;               /* acumulator */
  int ac_sign;          /* accumulator sign */
  /* The next two fields combined make up the instruction register */
  unsigned int opcode;  /* opcode used in conjunction with address field */
  unsigned int address; /* operand (usually an address) in the instr. reg */
  int ram[MAXRAM];      /* Memory cells */
};