Subversion Repositories plasma

#include "plasma.h"

#define MemoryRead(A) (*(volatile unsigned int*)(A))

#define MemoryWrite(A,V) *(volatile unsigned int*)(A)=(V)

int putchar(int value)

{

   while((MemoryRead(IRQ_STATUS) & IRQ_UART_WRITE_AVAILABLE) == 0)

      ;

   MemoryWrite(UART_WRITE, value);

   return 0;

}

int puts(const char *string)

{

   while(*string)

   {

      if(*string == '\n')

         putchar('\r');

      putchar(*string++);

   }

   return 0;

}

void print_hex(unsigned long num)

{

   long i;

   unsigned long j;

   for(i = 28; i >= 0; i -= 4)

   {

      j = (num >> i) & 0xf;

      if(j < 10)

         putchar('0' + j);

      else

         putchar('a' - 10 + j);

   }

}

void OS_InterruptServiceRoutine(unsigned int status)

{

   (void)status;

   putchar('I');

}

int kbhit(void)

{

   return MemoryRead(IRQ_STATUS) & IRQ_UART_READ_AVAILABLE;

}

int getch(void)

{

   while(!kbhit()) ;

   return MemoryRead(UART_READ);

}