Subversion Repositories openrisc

#define USE_PORT_A

#define RXADATA (int *) 0x01F800E0

#define RXBDATA (int *) 0x01F800E4

#define RXSTAT (int *) 0x01F800E8

void

outbyte (int c)

{

  volatile int *rxstat;

  volatile int *rxadata;

  int rxmask;

  rxstat = RXSTAT;

#ifdef USE_PORT_A

  rxadata = RXADATA;

  rxmask = 6;

#else

  rxadata = RXBDATA;

  rxmask = 0x60000;

#endif

  while ((*rxstat & rxmask) == 0);

  *rxadata = c;

}

int

inbyte (void)

{

  volatile int *rxstat;

  volatile int *rxadata;

  int rxmask;

  rxstat = RXSTAT;

#ifdef USE_PORT_A

  rxadata = RXADATA;

  rxmask = 1;

#else

  rxadata = RXBDATA;

  rxmask = 0x10000;

#endif

  while ((*rxstat & rxmask) == 0);

  return *rxadata;

}