📄 parallelport.h
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#if !defined(_PARALLEL_PORT_H_)
#define _PARALLEL_PORT_H_
#define PORT_DATA 0X378 // baseaddress of data register
#define PORT_STATE 0X379 // baseaddress of state register
#define PORT_CONTROL 0X37A // baseaddress of control register
#define REQUEST_ONESEND_BIT 0x80 //a
#define REQUEST_SIXSEND_BIT 0x80 //b
#define SIX_DONE_BIT 0x80 //c
#define SIX_FAIL_BIT 0x80 //d
#endif
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