ppt.h

来自「深圳市微逻辑电子有限公司 巨果&#8226 Kingmos&reg 系统核心」· C头文件 代码 · 共 22 行

#ifndef __PPT_H__
#define __PPT_H__

//#include <asm/io.h>
//#define _inp(a) inb(a)
//#define _outp(a,d) outb(d,a)

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 address found is used (re-order if needed for multiple ports)
#define LPT3 0x3bc	// hardware base address for parallel port

#define OutputPpt(value)    _outp((unsigned short)validPpt,value)
#define InputPpt()	    _inp((unsigned short)(validPpt+0x1))

#endif //__PPT_H__