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#ifndef __PPT_H__ 
#define __PPT_H__ 
 
int GetValidPpt(void); 
int InstallGiveIo(void); 
void SetPptCompMode(void); 
 
extern int validPpt; 
 
#define LPT1 0x378	// the search order is LPT1 then 2 then 3 
#define LPT2 0x278	// first valid raddress found is used (re-order if needed for multiple ports) 
#define LPT3 0x3bc	// hardware base raddress for parallel port 
 
#define OutputPpt(value)    _outp((unsigned short)validPpt,value) 
#define InputPpt()	    _inp((unsigned short)(validPpt+0x1)) 
 
#endif //__PPT_H__