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class.h
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class.h
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#ifndef CLASS_H
#define CLASS_H
using std::cin;
using std::cout;
using std::cerr;
using std::endl;
using std::ifstream;
using std::ofstream;
using std::fstream;
extern int CP; /* Clock pulse number */
extern int RAM[256]; /* To store the compiled code*/
extern int busval; /* Only Bus value */
class reg /* Main register class */
{
public:
int val;
inline void e(){busval=val;} // Functions declared here and as inline as they are small
inline void l(){val=busval;} //Just for usage
inline void r(){val=0;}
};
class flagr /*Flag class*/
{
public:
int u;
int z;
int nz;
int p;
int m;
int op;
int ep;
void flagupdate(int); /* Parameter is result of ALU opr */
};
class stackpointer
{
public:
int val;
int addr;
stackpointer* link;
};
extern class reg PC; /*All object declarations */
extern class reg OR;
extern class reg AR;
extern class reg MAR;
extern class reg RG[12];
extern class flagr FLAG;
extern class stackpointer* SP;
inline void RD(){busval=RAM[MAR.val];}
inline void WR(){RAM[MAR.val]=busval;}
void initsim(); /* To initialise the file */
void readsettings(); /* To read from .settings file */
int cfile(); /* To compile and copy the program */
int cmemfile(); /* To compile and read the memfile */
void printreg(); /* To print the contents of the registers */
void printmem(); /* To print the contents of the memory */
int ALU(char); /*Parameter is the operand */
void rom(int); /* ROM function call */
#endif