/******************************************************************
 *    system.c  -  Basic system functions                         *
 ******************************************************************/

#include <system.h>

byte *TextVideoRam;
volatile int cursor_x, cursor_y;
int current_mode_width;
int current_mode_height;

void *memcpy(void *dest, const void *src, int count)
{
    const char *sp = (const char *)src;
    char *dp = (char *)dest;
    for(; count != 0; count--) *dp++ = *sp++;
    return dest;
}

void *memset(void *dest, char val, int count)
{
    char *temp = (char *)dest;
    for( ; count != 0; count--) *temp++ = val;
    return dest;
}

unsigned short *memsetw(unsigned short *dest, unsigned short val, int count)
{
    unsigned short *temp = (unsigned short *)dest;
    for( ; count != 0; count--) *temp++ = val;
    return dest;
}


byte inportb (word _port) {
      byte rv;
      __asm__ __volatile__ ("inb %1, %0" : "=a" (rv) : "dN" (_port));
      return rv;
}
byte inb (word _port) {
      byte rv;
      __asm__ __volatile__ ("inb %1, %0" : "=a" (rv) : "dN" (_port));
      return rv;
}